The trypsin inhibitor-like domain is required for a serine protease inhibitor of Haemonchus contortus to inhibit host coagulation
Int J Parasitol. 2021 Jun 11:S0020-7519(21)00196-X. doi: 10.1016/j.ijpara.2021.05.002. Online ahead of print.ABSTRACTHaemonchus contortus, a blood-feeding nematode, inhibits blood coagulation at the site of infection to facilitate blood-sucking and digesting for successful parasitism. However, the mechanism underlying anti-coagulation at the host-parasite interface is largely unknown. In the current study, Hc-spi-i8, which has two greatly different transcripts named Hc-spi-i8a and Hc-spi-i8b, respectively, was described. Hc-SPI-I8A was a serine protease inhibitor containing a trypsin inhibitor-like cysteine rich (TIL) doma...
Source: International Journal for Parasitology - June 14, 2021 Category: Parasitology Authors: Fei Wu Hui Zhang Jingru Zhou Jie Wu Danni Tong Xueqiu Chen Yan Huang Hengzhi Shi Yi Yang Guangxu Ma Chaoqun Yao Aifang Du Source Type: research

The trypsin inhibitor-like domain is required for a serine protease inhibitor of Haemonchus contortus to inhibit host coagulation
Int J Parasitol. 2021 Jun 11:S0020-7519(21)00196-X. doi: 10.1016/j.ijpara.2021.05.002. Online ahead of print.ABSTRACTHaemonchus contortus, a blood-feeding nematode, inhibits blood coagulation at the site of infection to facilitate blood-sucking and digesting for successful parasitism. However, the mechanism underlying anti-coagulation at the host-parasite interface is largely unknown. In the current study, Hc-spi-i8, which has two greatly different transcripts named Hc-spi-i8a and Hc-spi-i8b, respectively, was described. Hc-SPI-I8A was a serine protease inhibitor containing a trypsin inhibitor-like cysteine rich (TIL) doma...
Source: International Journal for Parasitology - June 14, 2021 Category: Parasitology Authors: Fei Wu Hui Zhang Jingru Zhou Jie Wu Danni Tong Xueqiu Chen Yan Huang Hengzhi Shi Yi Yang Guangxu Ma Chaoqun Yao Aifang Du Source Type: research

The trypsin inhibitor-like domain is required for a serine protease inhibitor of Haemonchus contortus to inhibit host coagulation
Int J Parasitol. 2021 Jun 11:S0020-7519(21)00196-X. doi: 10.1016/j.ijpara.2021.05.002. Online ahead of print.ABSTRACTHaemonchus contortus, a blood-feeding nematode, inhibits blood coagulation at the site of infection to facilitate blood-sucking and digesting for successful parasitism. However, the mechanism underlying anti-coagulation at the host-parasite interface is largely unknown. In the current study, Hc-spi-i8, which has two greatly different transcripts named Hc-spi-i8a and Hc-spi-i8b, respectively, was described. Hc-SPI-I8A was a serine protease inhibitor containing a trypsin inhibitor-like cysteine rich (TIL) doma...
Source: International Journal for Parasitology - June 14, 2021 Category: Parasitology Authors: Fei Wu Hui Zhang Jingru Zhou Jie Wu Danni Tong Xueqiu Chen Yan Huang Hengzhi Shi Yi Yang Guangxu Ma Chaoqun Yao Aifang Du Source Type: research

The trypsin inhibitor-like domain is required for a serine protease inhibitor of Haemonchus contortus to inhibit host coagulation
Int J Parasitol. 2021 Jun 11:S0020-7519(21)00196-X. doi: 10.1016/j.ijpara.2021.05.002. Online ahead of print.ABSTRACTHaemonchus contortus, a blood-feeding nematode, inhibits blood coagulation at the site of infection to facilitate blood-sucking and digesting for successful parasitism. However, the mechanism underlying anti-coagulation at the host-parasite interface is largely unknown. In the current study, Hc-spi-i8, which has two greatly different transcripts named Hc-spi-i8a and Hc-spi-i8b, respectively, was described. Hc-SPI-I8A was a serine protease inhibitor containing a trypsin inhibitor-like cysteine rich (TIL) doma...
Source: International Journal for Parasitology - June 14, 2021 Category: Parasitology Authors: Fei Wu Hui Zhang Jingru Zhou Jie Wu Danni Tong Xueqiu Chen Yan Huang Hengzhi Shi Yi Yang Guangxu Ma Chaoqun Yao Aifang Du Source Type: research

The trypsin inhibitor-like domain is required for a serine protease inhibitor of Haemonchus contortus to inhibit host coagulation
Int J Parasitol. 2021 Jun 11:S0020-7519(21)00196-X. doi: 10.1016/j.ijpara.2021.05.002. Online ahead of print.ABSTRACTHaemonchus contortus, a blood-feeding nematode, inhibits blood coagulation at the site of infection to facilitate blood-sucking and digesting for successful parasitism. However, the mechanism underlying anti-coagulation at the host-parasite interface is largely unknown. In the current study, Hc-spi-i8, which has two greatly different transcripts named Hc-spi-i8a and Hc-spi-i8b, respectively, was described. Hc-SPI-I8A was a serine protease inhibitor containing a trypsin inhibitor-like cysteine rich (TIL) doma...
Source: International Journal for Parasitology - June 14, 2021 Category: Parasitology Authors: Fei Wu Hui Zhang Jingru Zhou Jie Wu Danni Tong Xueqiu Chen Yan Huang Hengzhi Shi Yi Yang Guangxu Ma Chaoqun Yao Aifang Du Source Type: research

Switch, disperse, repeat: host specificity is highly flexible in rodent-associated Eimeria
Int J Parasitol. 2021 Jun 2:S0020-7519(21)00195-8. doi: 10.1016/j.ijpara.2021.04.005. Online ahead of print.ABSTRACTInterplay between conserved host specificity and occasional host switches is an important process determining the evolution of host-parasite systems. Here, we address the dynamics of host switches at the population level in rodent-associated Eimeria. Focusing mainly on two ecologically similar host groups, Murinae and Arvicolinae, we show that the Eimeria infecting those hosts form a complex system of many genetic lineages with different host specificities. The broad geographic distribution of lineages indica...
Source: International Journal for Parasitology - June 5, 2021 Category: Parasitology Authors: Aneta Trefancov á Jana Kvi čerová Anna M ácová Michal Stanko Lada Hofmannov á V áclav Hypša Source Type: research

Switch, disperse, repeat: host specificity is highly flexible in rodent-associated Eimeria
Int J Parasitol. 2021 Jun 2:S0020-7519(21)00195-8. doi: 10.1016/j.ijpara.2021.04.005. Online ahead of print.ABSTRACTInterplay between conserved host specificity and occasional host switches is an important process determining the evolution of host-parasite systems. Here, we address the dynamics of host switches at the population level in rodent-associated Eimeria. Focusing mainly on two ecologically similar host groups, Murinae and Arvicolinae, we show that the Eimeria infecting those hosts form a complex system of many genetic lineages with different host specificities. The broad geographic distribution of lineages indica...
Source: International Journal for Parasitology - June 5, 2021 Category: Parasitology Authors: Aneta Trefancov á Jana Kvi čerová Anna M ácová Michal Stanko Lada Hofmannov á V áclav Hypša Source Type: research

Switch, disperse, repeat: host specificity is highly flexible in rodent-associated Eimeria
Int J Parasitol. 2021 Jun 2:S0020-7519(21)00195-8. doi: 10.1016/j.ijpara.2021.04.005. Online ahead of print.ABSTRACTInterplay between conserved host specificity and occasional host switches is an important process determining the evolution of host-parasite systems. Here, we address the dynamics of host switches at the population level in rodent-associated Eimeria. Focusing mainly on two ecologically similar host groups, Murinae and Arvicolinae, we show that the Eimeria infecting those hosts form a complex system of many genetic lineages with different host specificities. The broad geographic distribution of lineages indica...
Source: International Journal for Parasitology - June 5, 2021 Category: Parasitology Authors: Aneta Trefancov á Jana Kvi čerová Anna M ácová Michal Stanko Lada Hofmannov á V áclav Hypša Source Type: research

Switch, disperse, repeat: host specificity is highly flexible in rodent-associated Eimeria
Int J Parasitol. 2021 Jun 2:S0020-7519(21)00195-8. doi: 10.1016/j.ijpara.2021.04.005. Online ahead of print.ABSTRACTInterplay between conserved host specificity and occasional host switches is an important process determining the evolution of host-parasite systems. Here, we address the dynamics of host switches at the population level in rodent-associated Eimeria. Focusing mainly on two ecologically similar host groups, Murinae and Arvicolinae, we show that the Eimeria infecting those hosts form a complex system of many genetic lineages with different host specificities. The broad geographic distribution of lineages indica...
Source: International Journal for Parasitology - June 5, 2021 Category: Parasitology Authors: Aneta Trefancov á Jana Kvi čerová Anna M ácová Michal Stanko Lada Hofmannov á V áclav Hypša Source Type: research

Switch, disperse, repeat: host specificity is highly flexible in rodent-associated Eimeria
Int J Parasitol. 2021 Jun 2:S0020-7519(21)00195-8. doi: 10.1016/j.ijpara.2021.04.005. Online ahead of print.ABSTRACTInterplay between conserved host specificity and occasional host switches is an important process determining the evolution of host-parasite systems. Here, we address the dynamics of host switches at the population level in rodent-associated Eimeria. Focusing mainly on two ecologically similar host groups, Murinae and Arvicolinae, we show that the Eimeria infecting those hosts form a complex system of many genetic lineages with different host specificities. The broad geographic distribution of lineages indica...
Source: International Journal for Parasitology - June 5, 2021 Category: Parasitology Authors: Aneta Trefancov á Jana Kvi čerová Anna M ácová Michal Stanko Lada Hofmannov á V áclav Hypša Source Type: research

Switch, disperse, repeat: host specificity is highly flexible in rodent-associated Eimeria
Int J Parasitol. 2021 Jun 2:S0020-7519(21)00195-8. doi: 10.1016/j.ijpara.2021.04.005. Online ahead of print.ABSTRACTInterplay between conserved host specificity and occasional host switches is an important process determining the evolution of host-parasite systems. Here, we address the dynamics of host switches at the population level in rodent-associated Eimeria. Focusing mainly on two ecologically similar host groups, Murinae and Arvicolinae, we show that the Eimeria infecting those hosts form a complex system of many genetic lineages with different host specificities. The broad geographic distribution of lineages indica...
Source: International Journal for Parasitology - June 5, 2021 Category: Parasitology Authors: Aneta Trefancov á Jana Kvi čerová Anna M ácová Michal Stanko Lada Hofmannov á V áclav Hypša Source Type: research

Switch, disperse, repeat: host specificity is highly flexible in rodent-associated Eimeria
Int J Parasitol. 2021 Jun 2:S0020-7519(21)00195-8. doi: 10.1016/j.ijpara.2021.04.005. Online ahead of print.ABSTRACTInterplay between conserved host specificity and occasional host switches is an important process determining the evolution of host-parasite systems. Here, we address the dynamics of host switches at the population level in rodent-associated Eimeria. Focusing mainly on two ecologically similar host groups, Murinae and Arvicolinae, we show that the Eimeria infecting those hosts form a complex system of many genetic lineages with different host specificities. The broad geographic distribution of lineages indica...
Source: International Journal for Parasitology - June 5, 2021 Category: Parasitology Authors: Aneta Trefancov á Jana Kvi čerová Anna M ácová Michal Stanko Lada Hofmannov á V áclav Hypša Source Type: research

Releasing latent Toxoplasma gondii cysts from host cells to the extracellular environment induces excystation
In this study, we incubated T. gondii cysts from host cells in several solutions containing a variety of ionic compositions. Excystation occurred in a solution with an ionic composition which mimicked that of the extracellular environment. However, excystation did not occur in a solution that mimicked the intracellular environment. We also found that the specific Na+/K+ ratio and the presence of Ca2+, mimicking the extracellular environment, are required to trigger excystation. To examine whether the stage conversion of bradyzoite to tachyzoite occurs prior to egress, we constructed a gene-modified T. gondii strain express...
Source: International Journal for Parasitology - June 3, 2021 Category: Parasitology Authors: Taizo Saito Tatsunori Masatani Katsuya Kitoh Yasuhiro Takashima Source Type: research

A gastrointestinal nematode in pregnant and lactating mice alters maternal and neonatal microbiomes
Int J Parasitol. 2021 May 31:S0020-7519(21)00194-6. doi: 10.1016/j.ijpara.2021.03.008. Online ahead of print.ABSTRACTThe maternal microbiome is understood to be the principal source of the neonatal microbiome but the consequence of intestinal nematodes on pregnant and lactating mothers and implications for the neonatal microbiome are unknown. Using pregnant CD1 mice infected with Heligmosomoides bakeri, we investigated the microbiomes in maternal tissues (intestine, vagina, and milk) and in the neonatal stomach using MiSeq sequencing of bacterial 16S rRNA genes. Our first hypothesis was that maternal nematode infection alt...
Source: International Journal for Parasitology - June 3, 2021 Category: Parasitology Authors: Manjurul Haque Kristine G Koski Marilyn E Scott Source Type: research

Releasing latent Toxoplasma gondii cysts from host cells to the extracellular environment induces excystation
In this study, we incubated T. gondii cysts from host cells in several solutions containing a variety of ionic compositions. Excystation occurred in a solution with an ionic composition which mimicked that of the extracellular environment. However, excystation did not occur in a solution that mimicked the intracellular environment. We also found that the specific Na+/K+ ratio and the presence of Ca2+, mimicking the extracellular environment, are required to trigger excystation. To examine whether the stage conversion of bradyzoite to tachyzoite occurs prior to egress, we constructed a gene-modified T. gondii strain express...
Source: International Journal for Parasitology - June 3, 2021 Category: Parasitology Authors: Taizo Saito Tatsunori Masatani Katsuya Kitoh Yasuhiro Takashima Source Type: research

A gastrointestinal nematode in pregnant and lactating mice alters maternal and neonatal microbiomes
Int J Parasitol. 2021 May 31:S0020-7519(21)00194-6. doi: 10.1016/j.ijpara.2021.03.008. Online ahead of print.ABSTRACTThe maternal microbiome is understood to be the principal source of the neonatal microbiome but the consequence of intestinal nematodes on pregnant and lactating mothers and implications for the neonatal microbiome are unknown. Using pregnant CD1 mice infected with Heligmosomoides bakeri, we investigated the microbiomes in maternal tissues (intestine, vagina, and milk) and in the neonatal stomach using MiSeq sequencing of bacterial 16S rRNA genes. Our first hypothesis was that maternal nematode infection alt...
Source: International Journal for Parasitology - June 3, 2021 Category: Parasitology Authors: Manjurul Haque Kristine G Koski Marilyn E Scott Source Type: research

Releasing latent Toxoplasma gondii cysts from host cells to the extracellular environment induces excystation
In this study, we incubated T. gondii cysts from host cells in several solutions containing a variety of ionic compositions. Excystation occurred in a solution with an ionic composition which mimicked that of the extracellular environment. However, excystation did not occur in a solution that mimicked the intracellular environment. We also found that the specific Na+/K+ ratio and the presence of Ca2+, mimicking the extracellular environment, are required to trigger excystation. To examine whether the stage conversion of bradyzoite to tachyzoite occurs prior to egress, we constructed a gene-modified T. gondii strain express...
Source: International Journal for Parasitology - June 3, 2021 Category: Parasitology Authors: Taizo Saito Tatsunori Masatani Katsuya Kitoh Yasuhiro Takashima Source Type: research

A gastrointestinal nematode in pregnant and lactating mice alters maternal and neonatal microbiomes
Int J Parasitol. 2021 May 31:S0020-7519(21)00194-6. doi: 10.1016/j.ijpara.2021.03.008. Online ahead of print.ABSTRACTThe maternal microbiome is understood to be the principal source of the neonatal microbiome but the consequence of intestinal nematodes on pregnant and lactating mothers and implications for the neonatal microbiome are unknown. Using pregnant CD1 mice infected with Heligmosomoides bakeri, we investigated the microbiomes in maternal tissues (intestine, vagina, and milk) and in the neonatal stomach using MiSeq sequencing of bacterial 16S rRNA genes. Our first hypothesis was that maternal nematode infection alt...
Source: International Journal for Parasitology - June 3, 2021 Category: Parasitology Authors: Manjurul Haque Kristine G Koski Marilyn E Scott Source Type: research

Host exposure history and priority effects impact the development and reproduction of a dominant parasite
Int J Parasitol. 2021 May 24:S0020-7519(21)00180-6. doi: 10.1016/j.ijpara.2021.03.007. Online ahead of print.ABSTRACTWithin a single organism, numerous parasites often compete for space and resources. This competition, together with a parasite's ability to locate and successfully establish in a host, can contribute to the distribution and prevalence of parasites. Coinfection with trematodes in snail intermediate hosts is rarely observed in nature, partly due to varying competitive abilities among parasite taxa. Using a freshwater snail host (Biomphalaria glabrata), we studied the ability of a competitively dominant tremato...
Source: International Journal for Parasitology - May 27, 2021 Category: Parasitology Authors: S A Carpenter J T Vannatta D J Minchella Source Type: research

Specialist versus generalist parasites: the interactions between host diversity, environment and geographic barriers in avian malaria
Int J Parasitol. 2021 May 24:S0020-7519(21)00179-X. doi: 10.1016/j.ijpara.2021.04.003. Online ahead of print.ABSTRACTThe specialist versus generalist strategies of hemoparasites in relation to their avian host, as well as environmental factors, can influence their prevalence, diversity and distribution. In this paper we investigated the influence of avian host species, as well as the environmental and geographical factors, on the strategies of Haemoproteus and Plasmodium hemoparasites. We determined prevalence and diversity by targeting their cytochrome b (Cytb) in a total of 2,590 passerine samples from 138 localities of ...
Source: International Journal for Parasitology - May 27, 2021 Category: Parasitology Authors: Daniela Doussang Nicole Sallaberry-Pincheira Gustavo S Cabanne Dar ío A Lijtmaer Daniel Gonz ález-Acuña Juliana A Vianna Source Type: research

Host exposure history and priority effects impact the development and reproduction of a dominant parasite
Int J Parasitol. 2021 May 24:S0020-7519(21)00180-6. doi: 10.1016/j.ijpara.2021.03.007. Online ahead of print.ABSTRACTWithin a single organism, numerous parasites often compete for space and resources. This competition, together with a parasite's ability to locate and successfully establish in a host, can contribute to the distribution and prevalence of parasites. Coinfection with trematodes in snail intermediate hosts is rarely observed in nature, partly due to varying competitive abilities among parasite taxa. Using a freshwater snail host (Biomphalaria glabrata), we studied the ability of a competitively dominant tremato...
Source: International Journal for Parasitology - May 27, 2021 Category: Parasitology Authors: S A Carpenter J T Vannatta D J Minchella Source Type: research

Specialist versus generalist parasites: the interactions between host diversity, environment and geographic barriers in avian malaria
Int J Parasitol. 2021 May 24:S0020-7519(21)00179-X. doi: 10.1016/j.ijpara.2021.04.003. Online ahead of print.ABSTRACTThe specialist versus generalist strategies of hemoparasites in relation to their avian host, as well as environmental factors, can influence their prevalence, diversity and distribution. In this paper we investigated the influence of avian host species, as well as the environmental and geographical factors, on the strategies of Haemoproteus and Plasmodium hemoparasites. We determined prevalence and diversity by targeting their cytochrome b (Cytb) in a total of 2,590 passerine samples from 138 localities of ...
Source: International Journal for Parasitology - May 27, 2021 Category: Parasitology Authors: Daniela Doussang Nicole Sallaberry-Pincheira Gustavo S Cabanne Dar ío A Lijtmaer Daniel Gonz ález-Acuña Juliana A Vianna Source Type: research

Host exposure history and priority effects impact the development and reproduction of a dominant parasite
Int J Parasitol. 2021 May 24:S0020-7519(21)00180-6. doi: 10.1016/j.ijpara.2021.03.007. Online ahead of print.ABSTRACTWithin a single organism, numerous parasites often compete for space and resources. This competition, together with a parasite's ability to locate and successfully establish in a host, can contribute to the distribution and prevalence of parasites. Coinfection with trematodes in snail intermediate hosts is rarely observed in nature, partly due to varying competitive abilities among parasite taxa. Using a freshwater snail host (Biomphalaria glabrata), we studied the ability of a competitively dominant tremato...
Source: International Journal for Parasitology - May 27, 2021 Category: Parasitology Authors: S A Carpenter J T Vannatta D J Minchella Source Type: research

Specialist versus generalist parasites: the interactions between host diversity, environment and geographic barriers in avian malaria
Int J Parasitol. 2021 May 24:S0020-7519(21)00179-X. doi: 10.1016/j.ijpara.2021.04.003. Online ahead of print.ABSTRACTThe specialist versus generalist strategies of hemoparasites in relation to their avian host, as well as environmental factors, can influence their prevalence, diversity and distribution. In this paper we investigated the influence of avian host species, as well as the environmental and geographical factors, on the strategies of Haemoproteus and Plasmodium hemoparasites. We determined prevalence and diversity by targeting their cytochrome b (Cytb) in a total of 2,590 passerine samples from 138 localities of ...
Source: International Journal for Parasitology - May 27, 2021 Category: Parasitology Authors: Daniela Doussang Nicole Sallaberry-Pincheira Gustavo S Cabanne Dar ío A Lijtmaer Daniel Gonz ález-Acuña Juliana A Vianna Source Type: research

Host exposure history and priority effects impact the development and reproduction of a dominant parasite
Int J Parasitol. 2021 May 24:S0020-7519(21)00180-6. doi: 10.1016/j.ijpara.2021.03.007. Online ahead of print.ABSTRACTWithin a single organism, numerous parasites often compete for space and resources. This competition, together with a parasite's ability to locate and successfully establish in a host, can contribute to the distribution and prevalence of parasites. Coinfection with trematodes in snail intermediate hosts is rarely observed in nature, partly due to varying competitive abilities among parasite taxa. Using a freshwater snail host (Biomphalaria glabrata), we studied the ability of a competitively dominant tremato...
Source: International Journal for Parasitology - May 27, 2021 Category: Parasitology Authors: S A Carpenter J T Vannatta D J Minchella Source Type: research

Specialist versus generalist parasites: the interactions between host diversity, environment and geographic barriers in avian malaria
Int J Parasitol. 2021 May 24:S0020-7519(21)00179-X. doi: 10.1016/j.ijpara.2021.04.003. Online ahead of print.ABSTRACTThe specialist versus generalist strategies of hemoparasites in relation to their avian host, as well as environmental factors, can influence their prevalence, diversity and distribution. In this paper we investigated the influence of avian host species, as well as the environmental and geographical factors, on the strategies of Haemoproteus and Plasmodium hemoparasites. We determined prevalence and diversity by targeting their cytochrome b (Cytb) in a total of 2,590 passerine samples from 138 localities of ...
Source: International Journal for Parasitology - May 27, 2021 Category: Parasitology Authors: Daniela Doussang Nicole Sallaberry-Pincheira Gustavo S Cabanne Dar ío A Lijtmaer Daniel Gonz ález-Acuña Juliana A Vianna Source Type: research

Host exposure history and priority effects impact the development and reproduction of a dominant parasite
Int J Parasitol. 2021 May 24:S0020-7519(21)00180-6. doi: 10.1016/j.ijpara.2021.03.007. Online ahead of print.ABSTRACTWithin a single organism, numerous parasites often compete for space and resources. This competition, together with a parasite's ability to locate and successfully establish in a host, can contribute to the distribution and prevalence of parasites. Coinfection with trematodes in snail intermediate hosts is rarely observed in nature, partly due to varying competitive abilities among parasite taxa. Using a freshwater snail host (Biomphalaria glabrata), we studied the ability of a competitively dominant tremato...
Source: International Journal for Parasitology - May 27, 2021 Category: Parasitology Authors: S A Carpenter J T Vannatta D J Minchella Source Type: research

Specialist versus generalist parasites: the interactions between host diversity, environment and geographic barriers in avian malaria
Int J Parasitol. 2021 May 24:S0020-7519(21)00179-X. doi: 10.1016/j.ijpara.2021.04.003. Online ahead of print.ABSTRACTThe specialist versus generalist strategies of hemoparasites in relation to their avian host, as well as environmental factors, can influence their prevalence, diversity and distribution. In this paper we investigated the influence of avian host species, as well as the environmental and geographical factors, on the strategies of Haemoproteus and Plasmodium hemoparasites. We determined prevalence and diversity by targeting their cytochrome b (Cytb) in a total of 2,590 passerine samples from 138 localities of ...
Source: International Journal for Parasitology - May 27, 2021 Category: Parasitology Authors: Daniela Doussang Nicole Sallaberry-Pincheira Gustavo S Cabanne Dar ío A Lijtmaer Daniel Gonz ález-Acuña Juliana A Vianna Source Type: research

Host exposure history and priority effects impact the development and reproduction of a dominant parasite
Int J Parasitol. 2021 May 24:S0020-7519(21)00180-6. doi: 10.1016/j.ijpara.2021.03.007. Online ahead of print.ABSTRACTWithin a single organism, numerous parasites often compete for space and resources. This competition, together with a parasite's ability to locate and successfully establish in a host, can contribute to the distribution and prevalence of parasites. Coinfection with trematodes in snail intermediate hosts is rarely observed in nature, partly due to varying competitive abilities among parasite taxa. Using a freshwater snail host (Biomphalaria glabrata), we studied the ability of a competitively dominant tremato...
Source: International Journal for Parasitology - May 27, 2021 Category: Parasitology Authors: S A Carpenter J T Vannatta D J Minchella Source Type: research

Specialist versus generalist parasites: the interactions between host diversity, environment and geographic barriers in avian malaria
Int J Parasitol. 2021 May 24:S0020-7519(21)00179-X. doi: 10.1016/j.ijpara.2021.04.003. Online ahead of print.ABSTRACTThe specialist versus generalist strategies of hemoparasites in relation to their avian host, as well as environmental factors, can influence their prevalence, diversity and distribution. In this paper we investigated the influence of avian host species, as well as the environmental and geographical factors, on the strategies of Haemoproteus and Plasmodium hemoparasites. We determined prevalence and diversity by targeting their cytochrome b (Cytb) in a total of 2,590 passerine samples from 138 localities of ...
Source: International Journal for Parasitology - May 27, 2021 Category: Parasitology Authors: Daniela Doussang Nicole Sallaberry-Pincheira Gustavo S Cabanne Dar ío A Lijtmaer Daniel Gonz ález-Acuña Juliana A Vianna Source Type: research

A schistosoma mansoni tri- and tetramer microsatellite catalog for genetic population diversity and differentiation
Int J Parasitol. 2021 May 19:S0020-7519(21)00176-4. doi: 10.1016/j.ijpara.2021.04.002. Online ahead of print.ABSTRACTAll Schistosoma mansoni tri- and tetranucleotide repeat microsatellites published as of December 2018 were identified. All 52 were evaluated for autosomal location, strength of amplification, scorability and behavior as single-copy loci by polyacrylamide and capillary gel electrophoresis. Of these, 27 were unique, autosomal, polymorphic, easily scored and single copy as assessed on pooled adult worm DNA from two different continental origins and adult worm clones. These microsatellites were distributed acros...
Source: International Journal for Parasitology - May 22, 2021 Category: Parasitology Authors: Jeffrey D Kovach Jeffrey C Long L úcio M Barbosa Ana Rafaela Silva Sim ões Moura Luciano K Silva Mitermayer G Reis Ronald E Blanton Source Type: research

A schistosoma mansoni tri- and tetramer microsatellite catalog for genetic population diversity and differentiation
Int J Parasitol. 2021 May 19:S0020-7519(21)00176-4. doi: 10.1016/j.ijpara.2021.04.002. Online ahead of print.ABSTRACTAll Schistosoma mansoni tri- and tetranucleotide repeat microsatellites published as of December 2018 were identified. All 52 were evaluated for autosomal location, strength of amplification, scorability and behavior as single-copy loci by polyacrylamide and capillary gel electrophoresis. Of these, 27 were unique, autosomal, polymorphic, easily scored and single copy as assessed on pooled adult worm DNA from two different continental origins and adult worm clones. These microsatellites were distributed acros...
Source: International Journal for Parasitology - May 22, 2021 Category: Parasitology Authors: Jeffrey D Kovach Jeffrey C Long L úcio M Barbosa Ana Rafaela Silva Sim ões Moura Luciano K Silva Mitermayer G Reis Ronald E Blanton Source Type: research

A schistosoma mansoni tri- and tetramer microsatellite catalog for genetic population diversity and differentiation
Int J Parasitol. 2021 May 19:S0020-7519(21)00176-4. doi: 10.1016/j.ijpara.2021.04.002. Online ahead of print.ABSTRACTAll Schistosoma mansoni tri- and tetranucleotide repeat microsatellites published as of December 2018 were identified. All 52 were evaluated for autosomal location, strength of amplification, scorability and behavior as single-copy loci by polyacrylamide and capillary gel electrophoresis. Of these, 27 were unique, autosomal, polymorphic, easily scored and single copy as assessed on pooled adult worm DNA from two different continental origins and adult worm clones. These microsatellites were distributed acros...
Source: International Journal for Parasitology - May 22, 2021 Category: Parasitology Authors: Jeffrey D Kovach Jeffrey C Long L úcio M Barbosa Ana Rafaela Silva Sim ões Moura Luciano K Silva Mitermayer G Reis Ronald E Blanton Source Type: research

A schistosoma mansoni tri- and tetramer microsatellite catalog for genetic population diversity and differentiation
Int J Parasitol. 2021 May 19:S0020-7519(21)00176-4. doi: 10.1016/j.ijpara.2021.04.002. Online ahead of print.ABSTRACTAll Schistosoma mansoni tri- and tetranucleotide repeat microsatellites published as of December 2018 were identified. All 52 were evaluated for autosomal location, strength of amplification, scorability and behavior as single-copy loci by polyacrylamide and capillary gel electrophoresis. Of these, 27 were unique, autosomal, polymorphic, easily scored and single copy as assessed on pooled adult worm DNA from two different continental origins and adult worm clones. These microsatellites were distributed acros...
Source: International Journal for Parasitology - May 22, 2021 Category: Parasitology Authors: Jeffrey D Kovach Jeffrey C Long L úcio M Barbosa Ana Rafaela Silva Sim ões Moura Luciano K Silva Mitermayer G Reis Ronald E Blanton Source Type: research

Early-phase migration dynamics of Echinococcus multilocularis in two mouse strains showing different infection susceptibilities
Int J Parasitol. 2021 May 12:S0020-7519(21)00172-7. doi: 10.1016/j.ijpara.2021.04.001. Online ahead of print.ABSTRACTThe early-phase migration dynamics of Echinococcus multilocularis in the intermediate hosts remain largely unknown. We compared the parasite burden in the intestine, liver and faeces of DBA/2 and C57BL/6 mouse strains using parasite-specific quantitative PCR. Our results indicated that the parasites invaded mainly from the middle segments of the small intestine and completed migration to the liver within 24 h p.i. C57BL/6 mice had lower parasite DNA burdens in the intestine and liver but higher in the faeces...
Source: International Journal for Parasitology - May 15, 2021 Category: Parasitology Authors: Naoki Hayashi Hirokazu Kouguchi Yuhei Imasato Takao Irie Kinpei Yagi Nariaki Nonaka Ryo Nakao Source Type: research

Macroevolutionary analyses of ciliates associated with hosts support high diversification rates
Int J Parasitol. 2021 May 12:S0020-7519(21)00171-5. doi: 10.1016/j.ijpara.2021.03.006. Online ahead of print.ABSTRACTCiliophora is a phylum that is comprised of extremely diverse microorganisms with regard to their morphology and ecology. They may be found in various environments, as free-living organisms or associated with metazoans. Such associations range from relationships with low metabolic dependence such as epibiosis, to more intimate relationships such as mutualism and parasitism. We know that symbiotic relationships occur along the whole phylogeny of the group, however, little is known about their evolution. Theor...
Source: International Journal for Parasitology - May 15, 2021 Category: Parasitology Authors: Fabiola da Silva Costa Roberto J únio Pedroso Dias Mariana Fonseca Rossi Source Type: research

Early-phase migration dynamics of Echinococcus multilocularis in two mouse strains showing different infection susceptibilities
Int J Parasitol. 2021 May 12:S0020-7519(21)00172-7. doi: 10.1016/j.ijpara.2021.04.001. Online ahead of print.ABSTRACTThe early-phase migration dynamics of Echinococcus multilocularis in the intermediate hosts remain largely unknown. We compared the parasite burden in the intestine, liver and faeces of DBA/2 and C57BL/6 mouse strains using parasite-specific quantitative PCR. Our results indicated that the parasites invaded mainly from the middle segments of the small intestine and completed migration to the liver within 24 h p.i. C57BL/6 mice had lower parasite DNA burdens in the intestine and liver but higher in the faeces...
Source: International Journal for Parasitology - May 15, 2021 Category: Parasitology Authors: Naoki Hayashi Hirokazu Kouguchi Yuhei Imasato Takao Irie Kinpei Yagi Nariaki Nonaka Ryo Nakao Source Type: research

Macroevolutionary analyses of ciliates associated with hosts support high diversification rates
Int J Parasitol. 2021 May 12:S0020-7519(21)00171-5. doi: 10.1016/j.ijpara.2021.03.006. Online ahead of print.ABSTRACTCiliophora is a phylum that is comprised of extremely diverse microorganisms with regard to their morphology and ecology. They may be found in various environments, as free-living organisms or associated with metazoans. Such associations range from relationships with low metabolic dependence such as epibiosis, to more intimate relationships such as mutualism and parasitism. We know that symbiotic relationships occur along the whole phylogeny of the group, however, little is known about their evolution. Theor...
Source: International Journal for Parasitology - May 15, 2021 Category: Parasitology Authors: Fabiola da Silva Costa Roberto J únio Pedroso Dias Mariana Fonseca Rossi Source Type: research

Early-phase migration dynamics of Echinococcus multilocularis in two mouse strains showing different infection susceptibilities
Int J Parasitol. 2021 May 12:S0020-7519(21)00172-7. doi: 10.1016/j.ijpara.2021.04.001. Online ahead of print.ABSTRACTThe early-phase migration dynamics of Echinococcus multilocularis in the intermediate hosts remain largely unknown. We compared the parasite burden in the intestine, liver and faeces of DBA/2 and C57BL/6 mouse strains using parasite-specific quantitative PCR. Our results indicated that the parasites invaded mainly from the middle segments of the small intestine and completed migration to the liver within 24 h p.i. C57BL/6 mice had lower parasite DNA burdens in the intestine and liver but higher in the faeces...
Source: International Journal for Parasitology - May 15, 2021 Category: Parasitology Authors: Naoki Hayashi Hirokazu Kouguchi Yuhei Imasato Takao Irie Kinpei Yagi Nariaki Nonaka Ryo Nakao Source Type: research

Macroevolutionary analyses of ciliates associated with hosts support high diversification rates
Int J Parasitol. 2021 May 12:S0020-7519(21)00171-5. doi: 10.1016/j.ijpara.2021.03.006. Online ahead of print.ABSTRACTCiliophora is a phylum that is comprised of extremely diverse microorganisms with regard to their morphology and ecology. They may be found in various environments, as free-living organisms or associated with metazoans. Such associations range from relationships with low metabolic dependence such as epibiosis, to more intimate relationships such as mutualism and parasitism. We know that symbiotic relationships occur along the whole phylogeny of the group, however, little is known about their evolution. Theor...
Source: International Journal for Parasitology - May 15, 2021 Category: Parasitology Authors: Fabiola da Silva Costa Roberto J únio Pedroso Dias Mariana Fonseca Rossi Source Type: research

Early-phase migration dynamics of Echinococcus multilocularis in two mouse strains showing different infection susceptibilities
Int J Parasitol. 2021 May 12:S0020-7519(21)00172-7. doi: 10.1016/j.ijpara.2021.04.001. Online ahead of print.ABSTRACTThe early-phase migration dynamics of Echinococcus multilocularis in the intermediate hosts remain largely unknown. We compared the parasite burden in the intestine, liver and faeces of DBA/2 and C57BL/6 mouse strains using parasite-specific quantitative PCR. Our results indicated that the parasites invaded mainly from the middle segments of the small intestine and completed migration to the liver within 24 h p.i. C57BL/6 mice had lower parasite DNA burdens in the intestine and liver but higher in the faeces...
Source: International Journal for Parasitology - May 15, 2021 Category: Parasitology Authors: Naoki Hayashi Hirokazu Kouguchi Yuhei Imasato Takao Irie Kinpei Yagi Nariaki Nonaka Ryo Nakao Source Type: research

Macroevolutionary analyses of ciliates associated with hosts support high diversification rates
Int J Parasitol. 2021 May 12:S0020-7519(21)00171-5. doi: 10.1016/j.ijpara.2021.03.006. Online ahead of print.ABSTRACTCiliophora is a phylum that is comprised of extremely diverse microorganisms with regard to their morphology and ecology. They may be found in various environments, as free-living organisms or associated with metazoans. Such associations range from relationships with low metabolic dependence such as epibiosis, to more intimate relationships such as mutualism and parasitism. We know that symbiotic relationships occur along the whole phylogeny of the group, however, little is known about their evolution. Theor...
Source: International Journal for Parasitology - May 15, 2021 Category: Parasitology Authors: Fabiola da Silva Costa Roberto J únio Pedroso Dias Mariana Fonseca Rossi Source Type: research

Early-phase migration dynamics of Echinococcus multilocularis in two mouse strains showing different infection susceptibilities
Int J Parasitol. 2021 May 12:S0020-7519(21)00172-7. doi: 10.1016/j.ijpara.2021.04.001. Online ahead of print.ABSTRACTThe early-phase migration dynamics of Echinococcus multilocularis in the intermediate hosts remain largely unknown. We compared the parasite burden in the intestine, liver and faeces of DBA/2 and C57BL/6 mouse strains using parasite-specific quantitative PCR. Our results indicated that the parasites invaded mainly from the middle segments of the small intestine and completed migration to the liver within 24 h p.i. C57BL/6 mice had lower parasite DNA burdens in the intestine and liver but higher in the faeces...
Source: International Journal for Parasitology - May 15, 2021 Category: Parasitology Authors: Naoki Hayashi Hirokazu Kouguchi Yuhei Imasato Takao Irie Kinpei Yagi Nariaki Nonaka Ryo Nakao Source Type: research

Macroevolutionary analyses of ciliates associated with hosts support high diversification rates
Int J Parasitol. 2021 May 12:S0020-7519(21)00171-5. doi: 10.1016/j.ijpara.2021.03.006. Online ahead of print.ABSTRACTCiliophora is a phylum that is comprised of extremely diverse microorganisms with regard to their morphology and ecology. They may be found in various environments, as free-living organisms or associated with metazoans. Such associations range from relationships with low metabolic dependence such as epibiosis, to more intimate relationships such as mutualism and parasitism. We know that symbiotic relationships occur along the whole phylogeny of the group, however, little is known about their evolution. Theor...
Source: International Journal for Parasitology - May 15, 2021 Category: Parasitology Authors: Fabiola da Silva Costa Roberto J únio Pedroso Dias Mariana Fonseca Rossi Source Type: research

Early-phase migration dynamics of Echinococcus multilocularis in two mouse strains showing different infection susceptibilities
Int J Parasitol. 2021 May 12:S0020-7519(21)00172-7. doi: 10.1016/j.ijpara.2021.04.001. Online ahead of print.ABSTRACTThe early-phase migration dynamics of Echinococcus multilocularis in the intermediate hosts remain largely unknown. We compared the parasite burden in the intestine, liver and faeces of DBA/2 and C57BL/6 mouse strains using parasite-specific quantitative PCR. Our results indicated that the parasites invaded mainly from the middle segments of the small intestine and completed migration to the liver within 24 h p.i. C57BL/6 mice had lower parasite DNA burdens in the intestine and liver but higher in the faeces...
Source: International Journal for Parasitology - May 15, 2021 Category: Parasitology Authors: Naoki Hayashi Hirokazu Kouguchi Yuhei Imasato Takao Irie Kinpei Yagi Nariaki Nonaka Ryo Nakao Source Type: research

Macroevolutionary analyses of ciliates associated with hosts support high diversification rates
Int J Parasitol. 2021 May 12:S0020-7519(21)00171-5. doi: 10.1016/j.ijpara.2021.03.006. Online ahead of print.ABSTRACTCiliophora is a phylum that is comprised of extremely diverse microorganisms with regard to their morphology and ecology. They may be found in various environments, as free-living organisms or associated with metazoans. Such associations range from relationships with low metabolic dependence such as epibiosis, to more intimate relationships such as mutualism and parasitism. We know that symbiotic relationships occur along the whole phylogeny of the group, however, little is known about their evolution. Theor...
Source: International Journal for Parasitology - May 15, 2021 Category: Parasitology Authors: Fabiola da Silva Costa Roberto J únio Pedroso Dias Mariana Fonseca Rossi Source Type: research

Extended survival and reproductive potential of single-sex male and female Schistosoma japonicum within definitive hosts
Int J Parasitol. 2021 Apr 24:S0020-7519(21)00143-0. doi: 10.1016/j.ijpara.2021.03.005. Online ahead of print.ABSTRACTSchistosomiasis is caused by dioecious helminths of the genus Schistosoma. Recent work indicated that unpaired female and male schistosomes can survive within their definitive host for at least 1 year, although the viability or fertility of these worms after subsequent pairing remained untested. We performed two experiments on laboratory mice, one with female Schistosoma japonicum exposure first and male schistosomes second and another vice versa. After surviving as single-sex unpaired forms for up to 1 year...
Source: International Journal for Parasitology - April 27, 2021 Category: Parasitology Authors: Da-Bing Lu Qiu-Fu Yu Jie-Ying Zhang Meng-Tao Sun Man-Man Gu Joanne P Webster You-Sheng Liang Source Type: research

Extended survival and reproductive potential of single-sex male and female Schistosoma japonicum within definitive hosts
Int J Parasitol. 2021 Apr 24:S0020-7519(21)00143-0. doi: 10.1016/j.ijpara.2021.03.005. Online ahead of print.ABSTRACTSchistosomiasis is caused by dioecious helminths of the genus Schistosoma. Recent work indicated that unpaired female and male schistosomes can survive within their definitive host for at least 1 year, although the viability or fertility of these worms after subsequent pairing remained untested. We performed two experiments on laboratory mice, one with female Schistosoma japonicum exposure first and male schistosomes second and another vice versa. After surviving as single-sex unpaired forms for up to 1 year...
Source: International Journal for Parasitology - April 27, 2021 Category: Parasitology Authors: Da-Bing Lu Qiu-Fu Yu Jie-Ying Zhang Meng-Tao Sun Man-Man Gu Joanne P Webster You-Sheng Liang Source Type: research

Extended survival and reproductive potential of single-sex male and female Schistosoma japonicum within definitive hosts
Int J Parasitol. 2021 Apr 24:S0020-7519(21)00143-0. doi: 10.1016/j.ijpara.2021.03.005. Online ahead of print.ABSTRACTSchistosomiasis is caused by dioecious helminths of the genus Schistosoma. Recent work indicated that unpaired female and male schistosomes can survive within their definitive host for at least 1 year, although the viability or fertility of these worms after subsequent pairing remained untested. We performed two experiments on laboratory mice, one with female Schistosoma japonicum exposure first and male schistosomes second and another vice versa. After surviving as single-sex unpaired forms for up to 1 year...
Source: International Journal for Parasitology - April 27, 2021 Category: Parasitology Authors: Da-Bing Lu Qiu-Fu Yu Jie-Ying Zhang Meng-Tao Sun Man-Man Gu Joanne P Webster You-Sheng Liang Source Type: research

Extended survival and reproductive potential of single-sex male and female Schistosoma japonicum within definitive hosts
Int J Parasitol. 2021 Apr 24:S0020-7519(21)00143-0. doi: 10.1016/j.ijpara.2021.03.005. Online ahead of print.ABSTRACTSchistosomiasis is caused by dioecious helminths of the genus Schistosoma. Recent work indicated that unpaired female and male schistosomes can survive within their definitive host for at least 1 year, although the viability or fertility of these worms after subsequent pairing remained untested. We performed two experiments on laboratory mice, one with female Schistosoma japonicum exposure first and male schistosomes second and another vice versa. After surviving as single-sex unpaired forms for up to 1 year...
Source: International Journal for Parasitology - April 27, 2021 Category: Parasitology Authors: Da-Bing Lu Qiu-Fu Yu Jie-Ying Zhang Meng-Tao Sun Man-Man Gu Joanne P Webster You-Sheng Liang Source Type: research