Classical biological control of the erythrina gall wasp, Quadrastichus erythrinae, in Hawaii: conserving an endangered habitat

Publication date: Available online 6 December 2019Source: Biological ControlAuthor(s): Leyla V. Kaufman, Juliana Yalemar, Mark G. WrightAbstractErythrina gall wasp, Quadrastichus erythrinae (Hymenoptera: Eulophidae) began a global range expansion around 2005, and is considered a significant adventive pest in Asia, Pacific islands, South- and Central America, and North America, including Hawaii. The Hawaii endemic wiliwili tree, Erythrina sandwicensis (Fabaceae) was severely impacted and threatened with extinction, leading to the release of a classical biological control agent, Eurytoma erythrinae (Hymenoptera: Eurytomidae) from southern and East Africa, in 2008. Establishment was confirmed by retrievals of wasps within 1-4 months at all release locations. throughout Hawaii, and reduced impacts to trees within two years. By 2018, the majority of trees sampled incurred less than 33% gall damage to their foliage. E. erythrinae reduced Q. erythrinae damage by [x-y%%??] throughout Hawaii and may have contributed substantially to preventing the extinction of this endemic tree.Graphical abstract
Source: Biological Control - Category: Biology Source Type: research

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AbstractHuman strongyloidiasis is an important gastrointestinal disease with an estimated 30 to 100 million people infected. Prevalence is generally underestimated since many infections are asymptomatic, and traditional diagnostic tests based on parasitological examination of stool samples are not adequately sensitive. Serological tests are useful and supportive but are still only available in a reference research setting. We made an immunochromatographic test (ICT) kit for rapid serodiagnosis of human strongyloidiasis. The antigen used in the ICT kit was extracted from larvae ofStrongyloides stercoralis. Diagnostic effica...
Source: European Journal of Clinical Microbiology and Infectious Diseases - Category: Microbiology Source Type: research
When a new disease comes to light, AIDS, SARS, and most recently COVID-19, the health experts and the media bandy about words like epidemic and pandemic. Today, COVID-19 has been described as on the verge of becoming a global pandemic. The word pandemic with relation to disease means affecting all the people. pan meaning all, demos meaning people or district, Greek pandemos. So medically, speaking we see it as either potentially affecting everyone or more usually affecting every possible region of the world, in the sense of a global pandemic. An epidemic has a similar meaning, the epi means among, and the demos might refer...
Source: David Bradley Sciencebase - Songs, Snaps, Science - Category: Science Authors: Tags: Sciencebase Source Type: blogs
Previous analyses have shown how diversity among unicellular cyanobacteria inhabiting island-like hot springs is structured relative to physical separation and physiochemical differences among springs, especially at local to regional scales. However, these studies have been limited by the low resolution provided by the molecular markers surveyed. We analyzed large datasets obtained by high-throughput sequencing of a segment of the photosynthesis gene psaA from samples collected in hot springs from geothermal basins in Yellowstone National Park, Montana, and Oregon, all known from previous studies to contain populations of ...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Conclusions/SignificanceThe study results provide a rich insight into important outcomes for CL treatments, as well as related topics, from the perspective of a diverse patient population. Among the outcomes identified, we argue that those related to quality of life as well as recurrence should be included to a greater extent for assessment in clinical trials, and discuss the suitability of measurement instruments such as the Dermatology Quality of Life Index (DLQI). Interviews also point out the potential need to address concerns related to parasitological cure or scar formation, such as social stigmatization and disabili...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
Authors: Ambrogi V, Murris M, Iriart X, Lortholary O, Roques C, Cassaing S, Malavaud S PMID: 32081504 [PubMed - as supplied by publisher]
Source: Medecine et Maladies Infectieuses - Category: Infectious Diseases Tags: Med Mal Infect Source Type: research
Publication date: Available online 22 February 2020Source: Journal of Theoretical BiologyAuthor(s): Salihu S. Musa, Shi Zhao, Daozhou Gao, Qianying Lin, Gerardo Chowell, Daihai HeAbstractLassa fever, also known as Lassa hemorrhagic fever, is a virus that has generated recurrent outbreaks in West Africa. We use mathematical modelling to study the Lassa fever epidemics in Nigeria from 2016-19. Our model describes the interaction between human and rodent populations with the consideration of quarantine, isolation and hospitalization processes. Our model supports the phenomenon of forward bifurcation where the stability betwee...
Source: Journal of Theoretical Biology - Category: Biology Source Type: research
Publication date: May 2020Source: Colloids and Surfaces B: Biointerfaces, Volume 189Author(s): Maroua Ben Haddada, Elise Gerometta, Rachid Chawech, Jonathan Sorres, Anne Bialecki, Sabrina Pesnel, Jolanda Spadavecchia, Anne-Laure MorelAbstractHubertia ambavilla, an endemic plant originating from Reunion Island in the Indian Ocean, is traditionally used as an anti-inflammatory and in healing, both for internal and external use. Polyphenolic compounds from aqueous phase extractions can reduce metal salts into nanoparticles and stabilize them in one step. Although gold nanoparticles are well described in the literature as anti...
Source: Colloids and Surfaces B: Biointerfaces - Category: Biochemistry Source Type: research
Publication date: August 2020Source: Nonlinear Analysis: Real World Applications, Volume 54Author(s): Zhihui Ma, Shufan Wang, Xiaohua LiAbstractThe aim of this paper is to theoretically study the effect of the contacting distance (CTD) between the susceptible and infectious individuals in controlling infectious diseases. This paper formulates a generalized SEIR model incorporating the effect of the contacting distance (CTD). The dynamical behaviors of the proposed model are investigated and the controlling measures of the infectious diseases are developed. The results show that the contacting distance (CTD) between the sus...
Source: Nonlinear Analysis: Real World Applications - Category: Research Source Type: research
In this study, 272 blood samples were collected from pet dogs in five districts of Shenzhen, China. Babesia DNA was detected in 30 samples with an overall prevalence of 11.0 % in pet dogs in Shenzhen. The difference in the positive rate between female and male pet dogs, among different breed, and among the five sampling sites was not significant, while the age and health status of pet dogs significantly influence the positive rate of Babesia spp. infection. Sequencing results showed the presence of only B. vogeli in all of the samples tested. Sequence comparison and phylogenetic analysis revealed that all 30 strains of Bab...
Source: Comparative Immunology, Microbiology and Infectious Diseases - Category: Infectious Diseases Source Type: research
This study aimed to detect the Leishmania spp. in bats. 146 bats, representing 16 different species belonging to the Molossidae, Vespertilionidae, and Phyllostomidae families, were received and processed for collection of tissues. Skin samples were collected from 100% of the bats, and liver samples were collected from 87% (n=127). After evaluating the quality of the DNA extracted by means of PCR directed to the IRBP gene, the samples considered suitable for the Leishmania detection test were submitted for PCR directed to Leishmania kDNA, and to confirm positivity, were tested to the SSUrRNA gene-directed Nested-PCR. The Le...
Source: International Journal for Parasitology: Parasites and Wildlife - Category: Parasitology Source Type: research
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