Changes in feeding behaviour are not related to the reduction in the transmission rate of plant viruses by Aphis gossypii (Homoptera: Aphididae) to melon plants colonized by Beauveria bassiana (Ascomycota: Hypocreales)
Publication date: Available online 9 November 2018Source: Biological ControlAuthor(s): N. González-Mas, E. Quesada-Moraga, M. Plaza, A. Fereres, A. MorenoAbstractAphids are considered by far the most common and efficient vectors of non-persistent (NP) and persistent (P) plant viruses, with new, more environmentally friendly aphid control strategies urgently needed. Among these strategies, entomopathogenic fungi (EF) have successfully been employed against aphids mainly by foliar spray over infested crops. Plants benefit from not only their direct insecticidal activity on aphids but also a number of side outcomes of ...
Source: Biological Control - November 9, 2018 Category: Biology Source Type: research

Isolation, identification and in vitro characterization of grapevine rhizobacteria to control ochratoxigenic Aspergillus spp. on grapes
Publication date: Available online 2 November 2018Source: Biological ControlAuthor(s): Mayssa Arfaoui, Jessica Vallance, Emilie Bruez, Awatef Rezgui, Imen Melki, Samir Chebil, Najla Sadfi-Zouaoui, Patrice ReyAbstractAspergillus spp. are fungal pathogens that attack the grape and that are known for their secretion of mycotoxins, in particular, ochratoxin which is very toxic. A total of 39 bacterial strains isolated from the rhizosphere in Tunisian vineyards were identified using 16S rDNA and rpob gene sequencing: 35 were Bacillus spp. strains, 2 were Brevibacterium spp., 1 was Paenibacillus sp. and 1 strain was Microbacteri...
Source: Biological Control - November 3, 2018 Category: Biology Source Type: research

Engineering natural enemy shelters to enhance conservation biological control in field crops
Publication date: Available online 28 October 2018Source: Biological ControlAuthor(s): Lessando M. GontijoAbstractConserving natural enemies has become the cornerstone for sustainable pest management. Conservation is often attained through habitat manipulation in order to create suitable conditions for supporting the populations of natural enemies. In this context, creating natural enemy shelter is an important tactic for enhancing the conservation biological control of pests. In this article, I have reviewed several aspects of sheltering natural enemies, including the ecological mechanisms that promote conservation biolog...
Source: Biological Control - October 29, 2018 Category: Biology Source Type: research

Evaluating the host defense responses in oil palm to complex biocontrol endophyte–pathogen–host plant interaction via Fluidigm® real-time polymerase chain reaction (RT-PCR)
This study aimed to determine the defense responses of oil palm to this complex interaction with respective endophytes (Diaporthe phaseolorum WAA02, Trichoderma asperellum T2, Penicillium citrinum BTF08) and pathogen (Ganoderma boninense). The defense responses were determined based on assays of the host-induced enzymes and further complemented with Fluidigm® real-time PCR (RT-PCR). Fluidigm® RT-PCR is a time-saving technique that allows the expression of multiple genes in multiple samples on a single chip array. Biochemical results showed that the levels of host defense enzymes (PO, PPO, PAL, TPC) were detected in...
Source: Biological Control - October 27, 2018 Category: Biology Source Type: research

Life history of Anastatus bifasciatus, a potential biological control agent of the brown marmorated stink bug in Europe
Publication date: Available online 25 October 2018Source: Biological ControlAuthor(s): Judith Maria Stahl, Dirk Babendreier, Tim HayeAbstractAnastatus bifasciatus (Geoffroy) is the most widespread native egg parasitoid of the invasive agricultural pest Halyomorpha halys (Stål) in Europe and considered as promising candidate for augmentative biological control. In this context, the parasitoid’s reproductive parameters, longevity, phenology, and temperature requirements for development were studied. In addition, the potential of using stored frozen H. halys eggs for mass production was investigated. In northweste...
Source: Biological Control - October 25, 2018 Category: Biology Source Type: research

The Effects of Sugarcane Aphid Density in Sorghum on Predation by Lady Beetles and Lacewings
Publication date: Available online 25 October 2018Source: Biological ControlAuthor(s): Jeremy Hewlett, Adrianna Szczepaniec, Micky D. EubanksAbstractThe sugarcane aphid, Melanaphis sacchari Zehntner (Hemiptera: Aphididae), is a new and devastating pest of sorghum (Sorghum bicolor (L.)) in the United States. Arthropod predators, especially lady beetles and green lacewings, are often abundant in sugarcane aphid-infested sorghum, but little is known about the effects of these predators on sugarcane aphid populations. We quantified the effect of two species of lady beetles (larvae and adults of Coccinella septempunctata L. and...
Source: Biological Control - October 25, 2018 Category: Biology Source Type: research

Spiders actively choose and feed on nutritious non-prey food resources
Publication date: Available online 25 October 2018Source: Biological ControlAuthor(s): Jacinto Benhadi-Marín, José Alberto Pereira, José Paulo Sousa, Sónia A.P. SantosAbstractSpiders are generalist predators adapted to consume a wide range of prey although their ability to exploit non-prey foods such as pollen, nectar, and honeydew has been referred but less studied. In this work, we investigated the effect of different non-prey food items (Glucose at 0.5 M; aphid honeydew; black scale honeydew; a mixture of glucose 0.5 M, phenylalanine 0.1 mM, proline 0.1 mM, and tryptophan 0.1 mM; honey at 10%...
Source: Biological Control - October 25, 2018 Category: Biology Source Type: research

Trichoderma spirale T76-1 displays biocontrol activity against leaf spot on lettuce (Lactuca sativa L.) caused by Corynespora cassiicola or Curvularia aeria
In this study, 5 selected isolates of Trichoderma spp. were assessed for their antifungal activities against C. cassiicola and C. aeria. Trichoderma spirale T76-1 was superior in inhibiting the mycelial growth of C. cassiicola and C. aeria by 84.68% and 93.03%, respectively, in dual culture assays. In a volatile antifungal bioassay T. spirale T76-1 suppressed the growths of C. cassiicola and C. aeria by 41.29% and 42.35%, respectively. GC/MS profiling revealed the presence of antifungal compounds, including alcohol and pyran. Poisoned food technique showed that the cell-free culture filtrate of T. spirale T76-1 inhibited C...
Source: Biological Control - October 25, 2018 Category: Biology Source Type: research

Editorial Board
Publication date: January 2019Source: Biological Control, Volume 128Author(s): (Source: Biological Control)
Source: Biological Control - October 25, 2018 Category: Biology Source Type: research

Resistance of green lacewing, Chrysoperla carnea (Stephens), to buprofezin: cross resistance patterns, preliminary mechanism and realized heritability
In this study, a Field Strain of C. carnea was collected, assayed and selected with buprofezin to determine resistance development potential. After 8 generations of laboratory selection, C. carnea developed 392.37-fold and 16.16-fold resistance when compared to susceptible and Field Strains, respectively. Very low cross-resistance to pyriproxyfen (3.24-fold) and acetamiprid (5.38-fold) was observed in Bupro-SEL Strain when compared to Field Strains but cross-resistance to spinosad (3.21-fold) was negative. High realized heritability (h2= 0.49) value was observed in selected strain after 8 generations. Enzyme inhibitors (PB...
Source: Biological Control - October 21, 2018 Category: Biology Source Type: research

Agroforestry has an impact on nocturnal predation by ground beetles and Opiliones in a temperate organic alley cropping system
Publication date: Available online 16 October 2018Source: Biological ControlAuthor(s): Ambroise Martin-Chave, .Camille Béral, Yvan CapowiezAbstractThe sustainability of organic vegetable cropping relies on ecosystem services such as biocontrol. Vegetable agroforestry can combine perennial woody crops and non-woody crops, which may alter ground predator activity-density and predation potential. We used living sentinel prey (Cydia pomonella) to assess predation in two different months, as a function of three levels of canopy openness in an agroforestry system combining lettuce crops and grassy strips. Ground beetles a...
Source: Biological Control - October 17, 2018 Category: Biology Source Type: research

Intraguild predation and prey preferences influence biological control of Paropsis charybdis by the southern ladybird, Cleobora mellyi
Publication date: Available online 16 October 2018Source: Biological ControlAuthor(s): Sarah MansfieldAbstractIntraguild predation is common in most ecosystems and has the potential to disrupt biological control. Coccinellids are widely used biological control agents that often engage in intraguild predation against parasitoids of their shared prey/hosts. The eucalypt pest Paropsis charybdis is the target of several biological control agents: a coccinellid, Cleobora mellyi, and two egg parasitoids, Enoggera nassaui and Neopolycystus insectifurax. Parasitised P. charybdis eggs are slower to develop than unparasitised eggs s...
Source: Biological Control - October 17, 2018 Category: Biology Source Type: research

Impacts of predation by piapara Megaleporinus obtusidens (valenciennes, 1837) on the population densities of the invasive golden mussel Limnoperna fortunei (dunker, 1857)
Publication date: Available online 16 October 2018Source: Biological ControlAuthor(s): Daniel de Melo Rosa, Marcos Ribeiro da Costa Gaspar, Fabiano Alcísio Silva, Paulo Santos PompeuAbstractLimnoperna fortunei has been dispersing fast across South America by means of anthropic activities, invading aquatic ecosystems and causing substantial ecological and economic changes. Among these changes, L. fortunei has the potential to become an important prey species, and studies have verified their consumption by several fish in the South American continent. However, the impacts of fish predation on mussel densities have not...
Source: Biological Control - October 17, 2018 Category: Biology Source Type: research

Phenotypic variation in egg survival in the predatory mite Phytoseiulus persimilis under dry conditions
In this study, we investigated the possibility to select for a strain of P. persimilis adapted to dry conditions. To understand the potential sources of phenotypic variation in egg survival under dry conditions, we tested the effects of genetic and environmental causes of variation in this trait. We compared egg hatching of five P. persimilis populations, under constant as well as variable humidity conditions, at 25°C. The results show no intraspecific genetic variation among the five tested populations in egg hatching under constant and variable humidity conditions. In all five populations, less than 20% of the eggs h...
Source: Biological Control - October 17, 2018 Category: Biology Source Type: research

Evaluating the host defense responses in oil palm to complex biocontrol endophyte-pathogen-host plant interaction via Fluidigm®real-time polymerase chain reaction (RT-PCR)
This study aimed to determine the defense responses of oil palm to this complex interaction with respective endophytes (Diaporthe phaseolorum WAA02, Trichoderma asperellum T2, Penicillium citrinum BTF08) and pathogen (Ganoderma boninense). The defense responses were determined based on assays of the host-induced enzymes and further complemented with Fluidigm® real-time PCR (RT-PCR). Fluidigm® RT-PCR is a time-saving technique that allows the expression of multiple genes in multiple samples on a single chip array. Biochemical results showed that the levels of host defense enzymes (PO, PPO, PAL, TPC) were detected in...
Source: Biological Control - October 17, 2018 Category: Biology Source Type: research

Consumptive and non-consumptive effects of predatory arthropods on billbug (Coleoptera: Dryophthoridae) pests in turfgrass
Publication date: Available online 16 October 2018Source: Biological ControlAuthor(s): Madeleine M. Dupuy, Ricardo A. RamirezAbstractGeneralist predators affect pest populations through direct consumption or by non-consumptive effects, whereby predators induce changes in prey behavior which represent a cost to prey. A diverse community of predatory arthropods has been described in turfgrass, contributing to the direct mortality of pests including black cutworm, fall armyworm, and Japanese beetle. Billbugs are a major pest of turfgrass in the Intermountain West, but the composition of the local predatory arthropod community...
Source: Biological Control - October 16, 2018 Category: Biology Source Type: research

Effect of landscape diversity and crop management on the control of the millet head miner, Heliocheilus albipunctella (Lepidoptera: Noctuidae) by natural enemies
The objective of the present study is to identify crop management and landscape features affecting biocontrol services by natural enemies. A set of 45 millet fields were selected in a 20∗20 km area in Senegal, from the analysis of high resolution satellite images (Pleiades), and hypotheses on relative abundance of millet fields and semi-natural habitats (mainly trees) in the agricultural landscape. A biocontrol service index (BSI) was computed for each field over two cropping seasons by experimentally excluding natural enemies from naturally egg-infested millet panicles. Information on crop management was collected ...
Source: Biological Control - October 16, 2018 Category: Biology Source Type: research

Phenazines and cyclic lipopeptides produced by Pseudomonas sp. CMR12a are involved in the biological control of Pythium myriotylum on cocoyam (Xanthosoma sagittifolium)
This study was conducted in order to determine the role of phenazines (PCN), and two cyclic lipopeptides namely sessilins and orfamides, produced by Pseudomonas sp. CMR12a, in the suppression of the Cocoyam Root Rot Disease (CRRD). Previously generated biosynthetic mutants of CMR12a that were deficient in either one, two or all three metabolites were used in in vitro, microscopic and plant experiments. Using CMR12a and its biosynthetic mutants, plant experiments revealed that mutants, which produced sessilins, orfamides or phenazines alone or at least any two of the metabolites, could successfully suppress the cocoyam root...
Source: Biological Control - October 12, 2018 Category: Biology Source Type: research

Functional characterization of the ABC transporter TaPdr2 in the tolerance of biocontrol the fungus Trichoderma atroviride T23 to dichlorvos stress
In this study, we focused on the contribution of one ATP-binding cassette (ABC) transporter in Trichoderma atroviride that results in tolerance to DDVP stress. The gene encoding the protein, designated TaPdr2, was amplified from the T. atroviride T23 genome using homologous cloning and identified by induction to DDVP exposure. The sequence analysis of TaPdr2 predicted that this gene was a typical ABC-G transporter and may have functions, such as serving as a pleiotropic drug resistance protein (PDR) phenotype for xenobiotic tolerance and biocontrol traits. The key role of this gene in the tolerance to DDVP was demonstrated...
Source: Biological Control - October 10, 2018 Category: Biology Source Type: research

Entomopathogenic nematodes as natural enemies for control of Rhizoglyphus robini (Acari: Acaridae)?
Publication date: Available online 9 October 2018Source: Biological ControlAuthor(s): Jiří Nermuť, Rostislav Zemek, Zdeněk Mráček, Eric Palevsky, Vladimír PůžaAbstractBulb mites of the genus Rhizoglyphus are cosmopolitan pests of onion, garlic and ornamental plants. Despite the growing awareness against the use of pesticides, growers continue to use insecticides as the main control method. Thus, the search for environmentally safe alternative control methods, such as effective biocontrol agents, is of paramount importance. In the present study, the bulb mites were exposed to the infected juvenile...
Source: Biological Control - October 9, 2018 Category: Biology Source Type: research

Genetically engineered crops help support conservation biological control
Publication date: Available online 4 October 2018Source: Biological ControlAuthor(s): Jörg Romeis, Steven E. Naranjo, Michael Meissle, Anthony M. SheltonAbstractGenetically engineered (GE) crops producing insecticidal proteins from Bacillus thuringiensis (Bt) (mainly Cry proteins) have become a major control tactic for a number of key lepidopteran and coleopteran pests, mainly in maize, cotton, and soybean. As with any management tactic, there is concern that using GE crops might cause adverse effects on valued non-target species, including arthropod predators and parasitoids that contribute to biological control. Suc...
Source: Biological Control - October 5, 2018 Category: Biology Source Type: research

Variation in cool temperature performance between populations of Neochetina eichhorniae (Coleoptera: Curculionidae) and implications for the biological control of water hyacinth, Eichhornia crassipes, in a temperate climate
In this study, we tested populations of N. eichhorniae from northern California, Australia, South Africa, and Uruguay to examine the effects of low temperature on life-history performance to determine if cold hardiness differs between populations. We measured the development time, fecundity, survivorship, and thermal tolerance (chill coma: CTmin and supercooling point: SCP) of the four N. eichhorniae populations under two temperature treatments simulating fall and winter seasons of northern California. Results suggest that immature stages of all populations tested failed to survive and females did not reproduce in the wint...
Source: Biological Control - October 5, 2018 Category: Biology Source Type: research

Complementary effects of different predators of leaf-cutting ants: implications for biological control
Publication date: Available online 26 September 2018Source: Biological ControlAuthor(s): Luciana Elizalde, Mariella SuperinaAbstractPredators that share a prey can interact negatively or positively, depending on whether there is intraguild predation or they facilitate the consumption of the shared prey. Leaf-cutting ants may become pests, thus, knowing their interaction with natural enemies is key for managing their populations. We quantified the negative effect of armadillo predation and parasitoidism by phorids on leaf-cutting ants, and studied whether these predators interacted negatively or positively. Parasitoid incid...
Source: Biological Control - October 5, 2018 Category: Biology Source Type: research

Biological control of root rot in lettuce caused by Exserohilum rostratum and Fusarium oxysporum via induction of the defense mechanism
Publication date: Available online 26 September 2018Source: Biological ControlAuthor(s): Saad A.M. Alamri, Mohamed Hashem, Yasser S. Moustafa, Nivien A. Nafady, Kamal A.M. Abo-ElyousrAbstractRoot rot diseases of plant are accountable for crop yield losses. Biological control of this disease is considered a feasible alternative and eco-friendly method. The root rot pathogens, Exserohilum rostratum HQ905473 and Fusarium oxysporum HQ905448, were isolated from lettuce plants. Biocontrol activity of Trichoderma harzianum JF419706 and Bacillus subtilis HQ656002 against lettuce root rot and their inducibility of the defense genes...
Source: Biological Control - October 5, 2018 Category: Biology Source Type: research

Paenibacillus terrae NK3-4: A Potential Biocontrol Agent that Produces β-1,3-Glucanase
In conclusion, P. terrae NK3-4 is a promising biocontrol agent against rice blast and other plant diseases. The antifungal activities of this strain are likely due, at least partially, to the β-1,3-glucanase PteNI. (Source: Biological Control)
Source: Biological Control - October 5, 2018 Category: Biology Source Type: research

Biocontrol efficacy of Pichia membranaefaciens and Kloeckera apiculata against Monilinia fructicola and their ability to induce phenylpropanoid pathway in plum fruit
Publication date: Available online 29 September 2018Source: Biological ControlAuthor(s): Jie Zhang, Jia Liu, Jiao Xie, Lili Deng, Shixiang Yao, Kaifang ZengAbstractStrains belonging to the species Pichia membranaefaciens and Kloeckera apiculata were tested as biocontrol agents (BCAs) against brown rot caused by Monilinia fructicola in plum fruit. The two yeast strains demonstrated significant antifungal activities at concentration of 5×108 cells/mL. Effective colonization in the wounds and high population size to compete for nutrition and space with pathogen contributed to the control mechanism of P. membranaefaciens...
Source: Biological Control - October 5, 2018 Category: Biology Source Type: research

Biological control of foodborne pathogens and aflatoxins by selected probiotic LAB isolated from rice bran sourdough
Publication date: Available online 3 October 2018Source: Biological ControlAuthor(s): Alireza Sadeghi, Maryam Ebrahimi, Mojtaba Raeisi, Zohreh NematollahiAbstractThe aim of the present research was to evaluate the antimicrobial and bio-preservative capabilities of the selected probiotic lactic acid bacteria (LAB) isolated from rice bran sourdough. Survival in the simulated stomach and intestine conditions was used to screen the LAB isolates. Subsequently, the selected LAB isolate was identified by a PCR-based assay, and then its auto-aggregation, co-aggregation abilities, haemolytic activity and antibiotic susceptibility p...
Source: Biological Control - October 5, 2018 Category: Biology Source Type: research

Assessing the competitive interactions between two egg parasitoids of the Eucalyptus snout beetle, Gonipterus platensis, and their implications for biological control
In this study, we evaluate intra- and interspecific competitive interactions between the incumbent A. nitens and the new egg parasitoid Anaphes inexpectatus Huber and Prinsloo. The influence of temperature, order of parasitism, time interval between parasitism, number of ovipositions, and host age on the outcome of competition is assessed. Temperature had a significant effect, with benefit to A. inexpectatus at 20 °C. The first species to parasitise generally prevailed over the second, except when A. inexpectatus laid multiple eggs in a host egg and when the interval between ovipositions was long (six days). Overall, A...
Source: Biological Control - October 5, 2018 Category: Biology Source Type: research

Editorial Board
Publication date: December 2018Source: Biological Control, Volume 127Author(s): (Source: Biological Control)
Source: Biological Control - October 5, 2018 Category: Biology Source Type: research

Plasmodiophora brassicae root hair interaction and control by Bacillus subtilis XF-1 in Chinese cabbage
Publication date: January 2019Source: Biological Control, Volume 128Author(s): Pengjie He, Wenyan Cui, Shahzad Munir, Pengfei He, Xingyu Li, Yixin Wu, Xuwang Yang, Ping Tang, Yueqiu HeAbstractClubroot caused by Plasmodiophora brassicae Woron is one of the most destructive diseases of Chinese cabbage (Brassica napus). A highly potent strain of Bacillus subtilis, XF-1, which was isolated from the rhizosphere of Chinese cabbages with severe clubroot in Guandu District of Kunming, Yunnan Province, China, had strong inhibitory effects on both the survival and germination of resting spores of P. brassicae. Several strategies wer...
Source: Biological Control - October 5, 2018 Category: Biology Source Type: research

Can plantings of partridge pea (Chamaecrista fasciculata) enhance beneficial arthropod communities in neighboring soybeans?
Publication date: January 2019Source: Biological Control, Volume 128Author(s): Laura C. Moore, Alan W. Leslie, Cerruti R.R. Hooks, Galen P. DivelyAbstractGrass buffer strips are often deployed along crop borders as part of conservation programs to improve water quality, filter sediments from runoff, and foster wildlife biodiversity. Addition of wildflowers in these strips can augment natural enemies by provisioning nectar and pollen resources. Here we investigated the impact of partridge pea [Chamaecrista fasciculata (Michx.) Greene] as an insectary plant to enhance natural enemy abundance in adjacent soybeans. In 2005, st...
Source: Biological Control - October 5, 2018 Category: Biology Source Type: research

Recent development of aflatoxin contamination biocontrol in agricultural products
Publication date: January 2019Source: Biological Control, Volume 128Author(s): Silivano E. Mwakinyali, Xiaoxia Ding, Zhang Ming, Wang Tong, Qi Zhang, Peiwu LiAbstractAflatoxins are toxic, carcinogenic, mutagenic, teratogenic and immunotoxic by products of Aspergillus spp. that contaminate a broad range of grains such as maize, groundnut, and cotton. Aflatoxin not only impact negatively crop production but renders the produce unsuitable for consumption and harmful to human and livestock health, with tight threshold limits of acceptability. To prevent and control aflatoxin contamination in crops, several control strategies l...
Source: Biological Control - October 5, 2018 Category: Biology Source Type: research

Prior experiences of endoparasitoids affect their ability to discriminate NPV-infected from non-infested caterpillars
In this study, we examined the effects of different learning experiences by the endoparasitoid Microplitis pallidipes on their ability to discriminate NPV-infected from healthy caterpillars (larvae of beet armyworm, Spodoptera exigua). Compared to the parasitoids with no prior host contact (control), parasitoids with oviposition experience with healthy caterpillars had shorter searching time, shorter attacking time, a greater number of attacks, higher parasitism rate and greater comprehensive discrimination ability to both non-infected and NPV-infected caterpillars. They also had a higher percentage of first attacks on non...
Source: Biological Control - October 5, 2018 Category: Biology Source Type: research

Nonviable biomass of biocontrol agent Papiliotrema flavescens OH 182.9 3C enhances growth of Fusarium graminearum and counteracts viable biomass reduction of Fusarium head blight
Publication date: Available online 21 September 2018Source: Biological ControlAuthor(s): David A. Schisler, Miho Yoshioka, Martha M. Vaughan, Chris A. Dunlap, Alejandro P. RooneyAbstractMicrobially-based plant disease control products have achieved commercial market success, but the efficacy of biocontrol products is sometimes deemed inconsistent. Declines in product viability before or after application results in a mixture of non-viable and viable antagonist cells being present on infection courts. We hypothesized that these non-viable cells could provide a nutritive benefit to plant pathogen propagules and thereby reduc...
Source: Biological Control - September 22, 2018 Category: Biology Source Type: research

Semi-natural habitats mediate influence of inter-annual landscape variation on cereal aphid-parasitic wasp system in an agricultural landscape
Publication date: Available online 18 September 2018Source: Biological ControlAuthor(s): ZiHua Zhao, Gadi V.P. ReddyAbstractChanges in landscape pattern, including both habitat composition and inter-annual landscape changes, can affect population dynamics, interspecific interactions, and associated biocontrol functions. In particular, natural enemies can be enhanced by increasing percent of semi-natural habitats but impeded by inter-annual landscape changes. Here, we selected 32 landscapes along a gradient of semi-natural habitats and inter-annual landscape changes. The relationship between landscape patterns and cereal ap...
Source: Biological Control - September 19, 2018 Category: Biology Source Type: research

Untangling the Anagyrus pseudococci species complex (Hymenoptera: Encyrtidae), parasitoids of worldwide importance for biological control of mealybugs (Hemiptera: Pseudococcidae): genetic data corroborates separation of two new, previously misidentifed species
Publication date: Available online 18 September 2018Source: Biological ControlAuthor(s): Sharon A. Andreason, Serguei V. Triapitsyn, Thomas M. PerringAbstractEndoparasitoid wasps in the genus Anagyrus Howard (Hymenoptera: Encyrtidae) are commonly used in the biological control of mealybugs (Hemiptera: Pseudococcidae) worldwide. During a recent biological control program initiated for management of the pink hibiscus mealybug (PHM), Maconellicoccus hirsutus (Green), by its primary parasitoid Anagyrus kamali Moursi, genomic sequences of the parasitoid were found to be dissimilar with sequences previously published for A. kama...
Source: Biological Control - September 19, 2018 Category: Biology Source Type: research

Harvester ant nest distribution depends on soil disturbance regime
Publication date: Available online 17 September 2018Source: Biological ControlAuthor(s): Barbara Baraibar, Joel Torra, Aritz Royo-Esnal, Jordi Recasens, Carles ComasAbstractNest densities of harvester ants (Messor barbarus) are high in rain-fed cereal fields in north-eastern Spain where the ants remove large quantities of seeds, contributing to reductions in weed populations. The distribution of harvester ant nests within a field can influence the effectiveness of ants as weed seed predators because areas with low ant nest density have lower weed seed removal rates. Tillage can disturb or even kill ant colonies and may be ...
Source: Biological Control - September 17, 2018 Category: Biology Source Type: research

Can buffers of partridge pea (Chamaecrista fasciculata)enhance beneficial arthropod communities in neighboring soybeans?
Publication date: Available online 14 September 2018Source: Biological ControlAuthor(s): Laura C. Moore, Alan W. Leslie, Cerruti R.R. Hooks, Galen P. DivelyAbstractGrass buffer strips are often deployed along crop borders as part of conservation programs to improve water quality, filter sediments from runoff, and foster wildlife biodiversity. Addition of wildflowers in these strips can augment natural enemies by provisioning nectar and pollen resources. Here we investigated the impact of partridge pea [Chamaecrista fasciculata (Michx.) Greene] as an insectary plant to enhance natural enemy abundance in adjacent soybeans. I...
Source: Biological Control - September 15, 2018 Category: Biology Source Type: research

Relationship between foliar endophytes and apple cultivar disease resistance in an organic orchard
Publication date: Available online 14 September 2018Source: Biological ControlAuthor(s): Ayumi Hirakue, Shuichi SugiyamaAbstractMany studies have shown that foliar endophytes enhance host resistance to leaf pathogens. Although plants show large genotype-related intraspecific variation in pathogen resistance, few studies have examined whether disease resistance is also influenced by the endophyte community. In the present study, we tested the hypothesis that apple cultivar differences in leaf pathogen resistance are related to their respective foliar endophyte communities. We inoculated spores of Alternaria leaf spot (Alter...
Source: Biological Control - September 14, 2018 Category: Biology Source Type: research

Effect of additives on the efficacy of microencapsulated Hirsutella rhossiliensis controlling Heterodera schachtii on sugar beets
Publication date: Available online 12 September 2018Source: Biological ControlAuthor(s): Johannes Hallmann, Volker Gutberlet, Desiree Jakobs-Schönwandt, Klaus D. Vorlop, Joachim Müller, Anant V. PatelAbstractThe nematophagous fungus Hirsutella rhossiliensis is a common antagonist of a number of important plant-parasitic nematodes including the beet cyst nematode Heterodera schachtii. Although H. rhossiliensis is highly pathogenic, slow growth characteristics and weak competiveness under field conditions limit its biocontrol potential. Cellulose-based microcapsules were tested for their ability to improve fungal c...
Source: Biological Control - September 13, 2018 Category: Biology Source Type: research

Dispersal of emerald ash borer (Coleoptera: Buprestidae) parasitoids along an ash corridor in western New York
This study quantifies dispersal of T. planipennisi and suggests it will be an important biological control agent of EAB in North America.Graphical abstract (Source: Biological Control)
Source: Biological Control - September 11, 2018 Category: Biology Source Type: research

Hyperparasitoids as new targets in biological control in a global change context
Publication date: Available online 8 September 2018Source: Biological ControlAuthor(s): K. Tougeron, A. TenaAbstractAgricultural and forest insect pests generate important yield losses worldwide. Global-change is expected to increase pest outbreaks and their impact on human-managed ecosystems. Pest control performed by natural enemies is also likely to be influenced by global-change. Yet, pests and their natural enemies are part of complex food-webs and interact with other species, notably at upper trophic levels (e.g. hyperparasitoids, predators). These interactions have to be considered as important facets of food-web st...
Source: Biological Control - September 9, 2018 Category: Biology Source Type: research

An assessment of the non-target effects of copper on the leaf arthropod community in a vineyard
In this study, we simultaneously monitored the direct effect of Bordeaux mixture on three grapevine leaf diseases and five leaf arthropods (beneficial and pest species) in the field over a four-month time period. We found a strong interaction between sampling year and treatment for all tested organisms. Overall, the presence of copper generally decreased both the occurrence of disease and densities of leaf arthropods. Thus, copper reduces some pest densities but also biological agent densities which might interfere with biological control. The effects and results presented here should prove valuable when implementing futur...
Source: Biological Control - September 9, 2018 Category: Biology Source Type: research

Editorial Board
Publication date: November 2018Source: Biological Control, Volume 126Author(s): (Source: Biological Control)
Source: Biological Control - September 7, 2018 Category: Biology Source Type: research

Exposure of Candida oleophila to sublethal salt stress induces an antioxidant response and improves biocontrol efficacy
Publication date: Available online 6 September 2018Source: Biological ControlAuthor(s): Yuanhong Wang, Yuzhen Luo, Yuan Sui, Zhigang Xie, Yiqing Liu, Mingguo Jiang, Jia LiuAbstractIn the present study, a mild salt stress (1 M NaCl, for 30 min) pretreatment of Candida oleophila increased its subsequent tolerance to lethal levels of salt stress (6 M NaCl), and low pH (pH 3.4). The sublethal salt stress induced the activation of antioxidant enzymes in the antagonistic yeast, including catalase, thioredoxin reductase, glutathione peroxidase, and glutathione reductase, at both the transcript and enzyme activity level. Sublethal...
Source: Biological Control - September 7, 2018 Category: Biology Source Type: research

Survival analysis of brown plant hoppers (Nilaparvata lugens) in rice using video recordings of predation events
Publication date: Available online 4 September 2018Source: Biological ControlAuthor(s): Lia Hemerik, Felix Bianchi, Inge van de Wiel, Daomeng Fu, Yi Zou, Haijun Xiao, Wopke van der WerfAbstractThe brown plant hopper, Nilaparvata lugens Stål, is a major rice pest in South-East Asia. While brown plant hopper (BPH) populations can be regulated by natural enemies, there is limited quantitative information available about the contribution of different predator species to BPH mortality. Our study has three aims: (i) assess the relative contribution of different predator species to BPH mortality in rice fields, (ii) assess ...
Source: Biological Control - September 5, 2018 Category: Biology Source Type: research

Host utilization and fitness of the larval parasitoid Tetrastichus planipennisi are influenced by emerald ash borer’s food plants: implications for biological control
Publication date: Available online 3 September 2018Source: Biological ControlAuthor(s): Jacqueline N. Hoban, Jian J. Duan, Paula M. ShrewsburyAbstractEmerald ash borer (Agrilus planipennis) is one of the most destructive, invasive forest pests in North America and is responsible for the death of hundreds of millions of ash trees (Fraxinus spp.) in its introduced host range. Recently, this invasive beetle was also discovered attacking the white fringetree (Chionanthus virginicus) in North America. In response to emerald ash borer’s lack of evolutionary history with this host plant, we hypothesize that this host range ...
Source: Biological Control - September 4, 2018 Category: Biology Source Type: research

Diversity, plant growth promoting and downy mildew disease suppression potential of cultivable endophytic fungal communities associated with pearl millet
Publication date: Available online 1 September 2018Source: Biological ControlAuthor(s): M. Nandhini, S.B. Rajini, A.C. Udayashankar, S.R. Niranjana, Ole S. Lund, H.S Shetty, H.S. PrakashAbstractIn the present study, endophytic fungi were isolated from different parts of pearl millet crop from different regions of Karnataka. Endophytes were screened for diversity in tissue types, plant growth promoting (PGP) traits and downy mildew disease suppression ability in pearl millet. A total of 202 fungal isolates were isolated from leaves, shoot and root regions. The diversity analysis revealed that the plant harbored diverse fung...
Source: Biological Control - September 2, 2018 Category: Biology Source Type: research

Bionomics, thermal requirements and life table of the fruit fly parasitoid Doryctobracon areolatus (Hymenoptera: Braconidae) under various thermal regimes
Publication date: Available online 31 August 2018Source: Biological ControlAuthor(s): Rafael da Silva Gonçalves, Adrise Medeiros Nunes, Sônia Poncio, Roberta Manica-Berto, Sandro Daniel Nörnberg, Anderson Dionei Grützmacher, Dori Edson NavaGraphical abstract (Source: Biological Control)
Source: Biological Control - September 1, 2018 Category: Biology Source Type: research

Exploiting diapause and cold tolerance to enhance the use of the green lacewing Chrysopa formosa for biological control
Publication date: Available online 28 August 2018Source: Biological ControlAuthor(s): Yuyan Li, Manzi Wang, Fei Gao, Hongzhi Zhang, Hongyin Chen, Mengqing Wang, Chenxi Liu, Lisheng ZhangAbstractKnowledge of environmental regulation of diapause in the green lacewing Chrysopa formosa, an important polyphagous predator against various pests, is essential for understanding seasonal adaptations of insects and for increasing the shelf-life and shipment of chrysopids used in biological control programs. In the present study, we identified environmental factors responsible for induction and termination of diapause and cold toleran...
Source: Biological Control - August 30, 2018 Category: Biology Source Type: research