نتایج جستجو برای: cotesia plutellae
تعداد نتایج: 446 فیلتر نتایج به سال:
Many parasitoid species are subjected to strong selective pressures from their host, and their adaptive response may result in the formation of genetically differentiated populations, called host races. When environmental factors and reproduction traits prevent gene flow, host races become distinct species. Such a process has recently been documented within the Cotesia flavipes species complex,...
To develop efficient and safe biological control, we need to reliably identify natural enemy species, determine their host range, and understand the mechanisms that drive host range evolution. We investigated these points in Cotesia sesamiae, an African parasitic wasp of cereal stem borers. Phylogenetic analyses of 74 individual wasps, based on six mitochondrial and nuclear genes, revealed thre...
Data and chance are two related topics that deal with uncertainty, and statistics and probability are the mathematical ways of dealing with these two ideas, respectively (Moore, 1990). Unfortunately, existing literature reveals an artificial separation between probability and data analysis in both research and instruction, which some researchers (Shaughnessy, 2003; Steinbring, 1991) have alread...
Does transgenically incorporated insect resistance affect constitutive and herbivore-inducible terpenoid emissions and multitrophic communication under elevated atmospheric CO(2) or ozone (O(3))? This study aimed to clarify the possible interactions between allocation to direct defences (Bacillus thuringiensis (Bt) toxin production) and that to endogenous indirect defences under future climatic...
Plants attacked by herbivorous insects emit volatile compounds that attract predators or parasitoids of the herbivores. Plant fitness increases when these herbivorous insects are parasitized by solitary parasitoids, but whether gregarious koinobiont parasitoids also confer a benefit to plant fitness has been disputed. We investigated the relationship between parasitoid load of the gregarious Co...
Antagonistic relationships between parasitoids and their insect hosts involve multiple traits and are shaped by their ecological and evolutionary context. The parasitoid wasp Cotesia melitaearum and its host butterfly Melitaea cinxia occur in several locations around the Baltic sea, with differences in landscape structure, population sizes and the histories of the populations. We compared the v...
بهمنظور شناسایی پارازیتوییدهای سفیدهی کوچک کلم، Pieris rapae (Linnaeus, 1758) (Lepidoptera: Pieridae) از مزارع کلمگل در جنوب تهران، در سال 1390 نمونهبرداری صورت گرفت. در بین نمونهها گونهی Hyposoter clausus (Brischke, 1880)(Hymenoptera: Ichneumonidae) برای اولینبار از از روی سفیدهی کوچک کلم و منطقهی تهران گزارش میشود. گونهی دیگر بهنام Cotesia glomerata L. (Hymenoptera: Braconidae) نی...
Animals can store learned information in their brains through a series of distinct memory forms. Short-lasting memory forms can be followed by longer-lasting, consolidated memory forms. However, the factors determining variation in memory consolidation encountered in nature have thus far not been fully elucidated. Here, we show that two parasitic wasp species belonging to different families, Co...
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