Results 21 to 30 of about 647 (164)
Defensive Symbiont Genotype Distributions Are Linked to Parasitoid Attack Networks. [PDF]
Ecol LettFacultative symbionts are widespread in arthropods and can provide important services such as protection from natural enemies. Yet what shapes defensive symbiont associations in nature remains unclear. We show that the symbiont Hamiltonella defensa's genotype distribution strongly aligns with sharing the same parasitoids, rather than host plants ...
Wu T, Rodrigues AA, Fayle TM, Henry LM.
europepmc +2 more sources
Non-consumptive effects stabilize herbivore control over multiple generations.
PLoS ONE, 2020 Understanding the factors that influence predator-prey dynamics requires an investigation of oscillations in predator and prey population sizes over time. However, empirical studies are often performed over one or fewer predator generations.
Kathryn S Ingerslew, Deborah L Finke
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Primary parasitoid and hyperparasitoid guilds (hymenoptera) of grain aphid (Sitobion avenae F.) in northern Poland [PDF]
Archives of Biological Sciences, 2015 The aim of this study was to determine and compare the guilds of parasitic Hymenoptera associated with the grain aphid on rye and winter wheat in northern Poland. Of the seven species of primary parasitoids (Braconidae: Aphidiinae, Aphelinidae),
Barczak Tadeusz +2 more
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A Parasitoid of Aphids Manipulates Host Mummification Site, With Effects on Survival but Not Hyperparasitism. [PDF]
Ecol EvolParasitoid wasps can manipulate host behavior to enhance their own survival. Here we find that a parasitoid of aphids, Aphelinus chaonia, induces aphids to move to the leaf axil or leave the plant prior to pupation. This seems to have no effect on hyperparasitism, but mummy location may nevertheless impact parasitoid survival.
Reinmann N +2 more
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Plant Protection Science, 1999 From the obtained results we can note that the parasitoids in our experiments in 1 997 and 1998 had considerable influence on decline of aphids population density, at which the percent of parasitization in milk maturity stage of wheat was from 2.7 to 35%.
Shoki Al-Dobai, Ján Praslicka
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PLoS ONE, 2021 Due to their ability to parasitize various insect species, generalist parasitoids are widely used as biological control agents. They can be mass-reared and released in agroecosystems to control several pest species in various crops.
Estelle Postic +4 more
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Plant Protection Science, 2003 During 1997-1999, occurrence of hymenopteran parasitoids of cereal aphids was observed in different localities in Slovakia. Altogether, seven species of aphid parasitoids were recorded.
Ján Praslička +2 more
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European Journal of Entomology, 2004 Precocious activity of parasitoids is a key factor for cereal aphid control. We investigated the oviposition, flight and walking capacities at low temperature of four aphid parasitoids (Aphidius rhopalosiphi, A. ervi, Praon volucre, P.
Alain LANGER, Guy BOIVIN, Thierry HANCE
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, 2012 Aphidius ervi Haliday, 1834 (Figs. 32, 93) Material examined. Acyrthosiphon kondoi Shinji, 1938 on Medicago sativa, HA – Hamadan (34°48′05″N 48°28′48″E, 1832 m), 15.ix.2004, 7 JJ 3 ♀♀; Acyrthosiphon pisum on Medicago sativa, HA – Hamadan (34°48′05″N 48°28′48″E, 1832 m), 14.ix.2004, 26 JJ 38 ♀♀; KD – Marivan (35°31′47″N 46°13′31″E, 1335 m), 11.ix ...
Nazari, Yaser +7 more
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Investigación Agraria, 2018 En los agroecosistemas, existen enemigos naturales controladores de áfidos de cereales, regulando la población de los mismos. El estudio de la identificación y cuantificación es importante para el manejo integrado de plagas del trigo.
Rebeca González Torres +3 more
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