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https://www.readbyqxmd.com/read/29791787/dna-barcoding-of-microgastrine-parasitoid-wasps-hymenoptera-braconidae-using-high-throughput-methods-more-than-doubles-the-number-of-species-known-for-australia
#1
Erinn P Fagan-Jeffries, Steven J B Cooper, Terry Bertozzi, Tessa M Bradford, Andrew D Austin
The Microgastrinae are a hugely diverse subfamily of endoparasitoid wasps of lepidopteran caterpillars. They are important in agriculture as biological control agents, and play a significant ecological role in the regulation of caterpillar populations. Whilst the group has been the focus of intensive rearing and DNA barcoding studies in the Northern Hemisphere, the Australian fauna has received little attention. In total, 100 species have been described from or have been introduced into Australia, but the real species diversity for the region is clearly much larger than this...
May 23, 2018: Molecular Ecology Resources
https://www.readbyqxmd.com/read/29791563/insects-galls-of-pantanal-areas-in-the-state-of-mato-grosso-do-sul-brazil-characterization-and-occurrence
#2
Sharlene Ascendino, Valéria C Maia
Two Pantanal areas were investigated in Corumbá, Mato Grosso do Sul. The field works were carried out in five trails, in August and December/2011 and April/2012. Seventy-six gall morphotypes were found in 52 host plants, 22 of them were identified at species level and 30 at genus. Fabaceae, Myrtaceae and Sapindaceae were the plant families with the greatest richness of gall. Leaves were the plant organ with the greatest gall richness. Six gall shapes were found - globoid, lenticular, fusiform, cylindrical, conical, and marginal roll...
May 17, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/29784758/correction-take-off-mechanisms-in-parasitoid-wasps-doi-10-1242-jeb-161463
#3
M Burrows, M Dorosenko
No abstract text is available yet for this article.
May 20, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29776407/comparative-genomics-of-the-miniature-wasp-and-pest-control-agent-trichogramma-pretiosum
#4
Amelia R I Lindsey, Yogeshwar D Kelkar, Xin Wu, Dan Sun, Ellen O Martinson, Zhichao Yan, Paul F Rugman-Jones, Daniel S T Hughes, Shwetha C Murali, Jiaxin Qu, Shannon Dugan, Sandra L Lee, Hsu Chao, Huyen Dinh, Yi Han, Harsha Vardhan Doddapaneni, Kim C Worley, Donna M Muzny, Gongyin Ye, Richard A Gibbs, Stephen Richards, Soojin V Yi, Richard Stouthamer, John H Werren
BACKGROUND: Trichogrammatids are minute parasitoid wasps that develop within other insect eggs. They are less than half a millimeter long, smaller than some protozoans. The Trichogrammatidae are one of the earliest branching families of Chalcidoidea: a diverse superfamily of approximately half a million species of parasitoid wasps, proposed to have evolved from a miniaturized ancestor. Trichogramma are frequently used in agriculture, released as biological control agents against major moth and butterfly pests...
May 18, 2018: BMC Biology
https://www.readbyqxmd.com/read/29774237/an-herbivore-induced-plant-volatile-reduces-parasitoid-attraction-by-changing-the-smell-of-caterpillars
#5
Meng Ye, Nathalie Veyrat, Hao Xu, Lingfei Hu, Ted C J Turlings, Matthias Erb
Herbivore-induced plant volatiles (HIPVs) can mediate tritrophic interactions by attracting natural enemies of insect herbivores such as predators and parasitoids. Whether HIPVs can also mediate tritrophic interactions by influencing the attractiveness of the herbivores themselves remains unknown. We explored this question by studying the role of indole, a common HIPV in the plant kingdom. We found that herbivory-induced indole increases the recruitment of the solitary endoparasitoid Microplitis rufiventris to maize plants that are induced by Spodoptera littoralis caterpillars...
May 2018: Science Advances
https://www.readbyqxmd.com/read/29773840/rna-seq-and-uhplc-q-tof-ms-based-lipidomics-study-in-lysiphlebia-japonica
#6
Xueke Gao, Junyu Luo, Limin Lü, LiJuan Zhang, Shuai Zhang, Jinjie Cui
Lipids play an important role in energy storage, membrane structure stabilization and signaling. Parasitoids are excellent models to study lipidomics because a majority of them do not accumulate during their free-living life-stage. Studies on parasitoids have mostly focused on the changes in the lipids and gene transcripts in hosts and little attention has been devoted to lipidomics and transcriptomics changes in parasitoids. In this study, a relative quantitative analysis of lipids and their gene transcripts in 3-days-old Lysiphlebia japonica larva (3 days after spawning) and pupae were performed using liquid chromatography, mass spectrometry and RNA-seq...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29769575/characterization-of-antennal-chemosensilla-and-associated-odorant-binding-as-well-as-chemosensory-proteins-in-the-parasitoid-wasp-microplitis-mediator-hymenoptera-braconidae
#7
Shan-Ning Wang, Shuang Shan, Jing-Tao Liu, Rui-Jun Li, Zi-Yun Lu, Khalid Hussain Dhiloo, Adel Khashaveh, Yong-Jun Zhang
Odorant binding proteins (OBPs) and chemosensory proteins (CSPs) expressed in antennal chemosensilla are believed to be important in insect chemoreception. In the current study, we fully described the morphological characteristics of the antennal sensilla in parasitoid wasp Microplitis mediator and analyzed the expression patterns of OBPs and CSPs within the antennae. In M. mediator, eight types of sensilla were observed on the antennae. Sensilla basiconica type 2 and s. placodea with wall pores may be involved in olfactory perception, whereas s...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29769342/cotesia-congregata-bracovirus-circles-encoding-ptp-and-ankyrin-genes-integrate-into-the-dna-of-parasitized-manduca-sexta-hemocytes
#8
Germain Chevignon, Georges Periquet, Gabor Gyapay, Nathalie Vega-Czarny, Karine Musset, Jean-Michel Drezen, Elisabeth Huguet
Polydnaviruses (PDVs) are essential for the parasitism success of tens of thousands of species of parasitoid wasps. PDVs are present in wasp genomes as proviruses, which serve as template for the production of double stranded circular viral DNA carrying virulence genes that are injected into lepidopteran hosts. PDV circles do not contain genes coding for particle production hence impeding viral replication in caterpillar hosts during parasitism. Here we investigated the fate of PDV circles of Cotesia congregata bracovirus during parasitism of the tobacco hornworm, Manduca sexta , by the wasp Cotesia congregata Sequences sharing similarities with Host integration Motifs (HIM) involved in integration into DNA of Microplitis demolitor bracovirus (MdBV) circles, could be identified in 12 CcBV circles, which encode PTP and VANK gene families involved in host immune disruption...
May 16, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29765633/differential-arthropod-responses-to-warming-are-altering-the-structure-of-arctic-communities
#9
Amanda M Koltz, Niels M Schmidt, Toke T Høye
The Arctic is experiencing some of the fastest rates of warming on the planet. Although many studies have documented responses to such warming by individual species, the idiosyncratic nature of these findings has prevented us from extrapolating them to community-level predictions. Here, we leverage the availability of a long-term dataset from Zackenberg, Greenland (593 700 specimens collected between 1996 and 2014), to investigate how climate parameters influence the abundance of different arthropod groups and overall community composition...
April 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29764670/editorial-overview-parasites-parasitoids-biological-control-bee-health-in-the-modern-age-a-major-concern
#10
EDITORIAL
Elke Genersch, Annette Bruun Jensen, Bryony C Bonning
No abstract text is available yet for this article.
April 2018: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/29760760/differences-in-the-reliance-on-cuticular-hydrocarbons-as-sexual-signaling-and-species-discrimination-cues-in-parasitoid-wasps
#11
Jan Buellesbach, Sebastian G Vetter, Thomas Schmitt
Background: Cuticular hydrocarbons (CHC) have been documented to play crucial roles as species- and sex-specific cues in the chemical communication systems of a wide variety of insects. However, whether they are sufficient by themselves as the sole cue triggering sexual behavior as well as preference of con- over heterospecific mating partners is rarely assessed. We conducted behavioral assays in three representative species of parasitoid wasps (Hymenoptera: Pteromalidae) to determine their reliance on CHC as species-specific sexual signaling cues...
2018: Frontiers in Zoology
https://www.readbyqxmd.com/read/29755259/descriptions-of-two-new-species-of-platygaster-latreille-that-attack-gall-midges-diptera-cecidomyiidae-with-notes-on-their-biology-hymenoptera-platygastridae
#12
Kazunori Matsuo, Tomohisa Fujii, Makoto Tokuda, Tomoko Ganaha-Kikumura, Junichi Yukawa, Kenzou Yamagishi
Platygaster ingeniosus Matsuo & Yamagishi, sp. n. and P. urniphila Matsuo & Yamagishi, sp. n. (Hymenoptera: Platygastridae) are described from Japan. The former species is an egg-larval solitary parasitoid of Masakimyia pustulae Yukawa and Sunose (Diptera: Cecidomyiidae). The latter species is an egg-larval gregarious parasitoid of Rhopalomyia longitubifex (Shinji) (Diptera: Cecidomyiidae).
2018: ZooKeys
https://www.readbyqxmd.com/read/29754059/selectivity-assessment-of-two-biorational-insecticides-azadirachtin-and-pyriproxyfen-in-comparison-to-a-neonicotinoid-acetamiprid-on-pupae-and-adults-of-a-neotropical-strain-eretmocerus-mundus-mercet
#13
Natalia Francesena, Marcela Inés Schneider
Assessment of the susceptibility of natural enemies of pests to selective pesticides is relevant for a sustainable agriculture with low impact on the environment. The aim of this study was to assess the toxicity of two biorational insecticides, azadirachtin and pyriproxyfen in comparison to a neonicotinoid insecticide, acetamiprid, on pupae and adults of a Neotropical strain of Eretmocerus mundus. Adult emergence and survival were evaluated as lethal effects whereas the sublethal effects were assessed through the reproductive capacity, sex ratio, and longevity of the surviving first progeny...
May 2, 2018: Chemosphere
https://www.readbyqxmd.com/read/29749703/coinfection-of-the-secondary-symbionts-hamiltonella-defensa-and-arsenophonus-sp-contribute-to-the-performance-of-the-major-aphid-pest-aphis-gossypii-hemiptera-aphididae
#14
Aida Ayoubi, Ali Asghar Talebi, Yaghoub Fathipour, Mohammad Mehrabadi
Bacterial endosymbionts play important roles in ecological traits of aphids. In this study, we characterize the bacterial endosymbionts of A. gossypii collected in Karaj, Iran and their role in the performance of the aphid. Our results indicated that beside Buchnera aphidicola, A. gossypii, also harbors both Hamiltonella defensa and Arsenophonus sp. Quantitative PCR (qPCR) results revealed that the populations of the endosymbionts increased throughout nymphal development up to adult emergence; thereafter, populations of Buchnera and Arsenophonus were diminished while the density of H...
May 11, 2018: Insect Science
https://www.readbyqxmd.com/read/29748763/genome-wide-association-analysis-of-host-genotype-and-plastic-wing-morphological-variation-of-an-endoparasitoid-wasp-asobara-japonica-hymenoptera-braconidae
#15
Shinpei Yamashita, Tomohiro Takigahira, Kazuo H Takahashi
Accumulating evidence suggests that genotype of host insects influences the development of koinobiont endoparasitoids. Although there are many potential genetic variations that lead to the internal body environmental variations of host insects, association between the host genotype and the parasitoid development has not been examined in a genome-wide manner. In the present study, we used highly inbred whole genome sequenced strains of Drosophila melanogaster to associate single nucleotide polymorphisms (SNPs) of host flies with morphological traits of Asobara japonica, a larval-pupal parasitoid wasp that infected those hosts...
May 10, 2018: Genetica
https://www.readbyqxmd.com/read/29747428/a-new-alien-invasive-longhorn-beetle-xylotrechus-chinensis-cerambycidae-is-infesting-mulberries-in-catalonia-spain
#16
Víctor Sarto I Monteys, Glòria Torras I Tutusaus
In this paper, the invasion of a new alien beetle species to Europe, the longhorn Xylotrechus chinensis (Chevrolat) (Cerambycidae), originating from East Asia, is revealed. It has settled in Catalonia (Spain), occupying at present an area of at least 44.1 km², where it has been shown to severely infest (ca. 10 to 45%) and eventually kill mulberry trees in private and public grounds. The main objective of this study was to evaluate its impact and provide new significant insights into its life history, seasonality, reproductive capacity (females produce an average of 83...
May 9, 2018: Insects
https://www.readbyqxmd.com/read/29743126/selective-flowers-to-attract-and-enhance-telenomus-laeviceps-hymenoptera-scelionidae-a-released-biocontrol-agent-of-mamestra-brassicae-lepidoptera-noctuidae
#17
G Barloggio, L Tamm, P Nagel, H Luka
The importance of the right food source for the survival and reproduction of certain insect species is well documented. In the case of biocontrol agents, this is even more important in order to reach a high predation or parasitation performance. The egg parasitoid Telenomus laeviceps (Förster, 1861) (Hymenoptera: Scelionidae) is a promising candidate for mass release as a biological control agent of the cabbage moth Mamestra brassicae (Linnaeus, 1758) (Lepidoptera: Noctuidae). However, adult T. laeviceps need a sugar-rich food source to increase their parasitation performance and produce a good amount of female offspring...
May 10, 2018: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/29740230/assessing-risks-of-pesticides-targeting-lepidopteran-pests-in-cruciferous-ecosystems-to-eggs-parasitoid-trichogramma-brassicae-bezdenko
#18
D P Thubru, D M Firake, G T Behere
Lethal and sub lethal effects of fresh and old residues of azadirachtin, spinosad, Bacillus thuringiensis var. kurstaki ( Bt var. k ), and deltamethrin, were evaluated at their recommended field doses against adult and immature stages of Trichogramma brassicae under in vitro conditions. The experiments were carried out at the Entomology section of Division of Crop Protection, ICAR Research Complex for NEH region, Umiam, Meghalaya, in 2012-2013. The effects of different pesticides were determined by bioassays using the residual film method, the diet contamination method, the pupal dip method and the topical application technique...
May 2018: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/29731539/venom-is-beneficial-but-not-essential-for-development-and-survival-of-nasonia
#19
Ellen O Martinson, John H Werren
Parasitoid wasps sting and inject venom in arthropod hosts, which alters host metabolism and development while keeping the host alive for several days, presumably to induce benefits for the parasitoid young.Here we investigate the consequences of host envenomation on development and fitness of wasp larvae in the ectoparasitoid Nasonia vitripennis , by comparing wasps reared on live unstung, previously stung, and cold-killed hosts. Developmental arrest and suppression of host response to larvae are major venom effects that occur in both stung and cold-killed hosts, but not unstung hosts; while cold-killed hosts lack venom effects that require a living host...
April 2018: Ecological Entomology
https://www.readbyqxmd.com/read/29728766/correction-to-drought-stress-affects-plant-metabolites-and-herbivore-preference-but-not-host-location-by-its-parasitoids
#20
Berhane T Weldegergis, Feng Zhu, Erik H Poelman, Marcel Dicke
One of the main abiotic stresses that strongly affects plant survival and the primary cause of crop loss around the world is drought.
May 4, 2018: Oecologia
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