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Showing 1 to 13 of 13 for “"host use"”.
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Host use, mutualism and parasitism in the Lycaeides butterfly complex
Changes in host use in herbivorous insects can lead to diversification, speciation, and changes in other ecological interactions. In the first chapter, larval performance was investigated in three species of Lycaeides butterflies and placed into the context of other already studied ecological …
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Host use and foraging in the parasitic plant Cuscuta subinclusa.
… in resource acquisition (coil) relative to host quality in a way predicted by the marginal value theorem (MVT) in that: (1) stem coiling, the necessary antecedent and determinant of resource uptake, precedes exploitation of host materials; and (2) mean coiling on a host species is …
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Costs and benefits of host use by brood parasitic birds
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Investigating host use and migration by the corn earworm (Noctuidae: Helicoverpa zea) using stable isotope and morphometric techniques.
… insecticidal protein (Bt toxin) has focused renewed attention on the issue of southward migration of Helicoverpa zea because it could have a major effect on the rate at which this pest evolves resistance to the Bt toxin. Corn is a major host of H. zea and since there is presently limited …
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Intraspecific plant polyploidy effects on goldenrod insect herbivores
… (6N) races of S. altissima and assesses whether host use by seven taxonomically diverse herbivorous insect species is non-random with respect to ploidy level across this distribution. Sampling of S. altissima populations along a 400 mi longitudinal transect across Iowa and neighboring states …
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Integrative approach to discovering species diversity within the Mediterranean group of the Bemisia tabaci complex
… and (iv) bioassays to compare their host-plant ranges and performances on 13 plants. Our mitogenome phylogeny showed close relationships among Q1 and Q2 populations, while ASL was placed outside the Q1/Q2 cluster with 100% bootstrap support. Using the mitogenomes as a reference …
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Phylogenetics patterns of host utilization in two tropical Microgastrine parasitoid genera (Hymenoptera: Braconidae)
… trapping, generally lack information regarding host utilization. Even within the species for which host data is available, there are commonly too few accurate records to provide a realistic depiction of host breadth. As a result, detailed phylogenetic studies including both realistic subsets of …
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Population Genetics and Host Specificity of a Rare Parasitic Plant, Cuscuta harperi
… range; it is also exhibits a high level of host specificity, parasitizing only a few select species. <em>C. harperi</em> is of conservation concern due to small population sizes and threats from habitat degradation.</p> <p>Here we develop genetic markers to address questions regarding …
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Reproductive success of a generalist brood parasite predicts the rate of parasitism in the subsequent year
… cowbirds (Molothrus ater) rely solely on hosts to raise their young. Although cowbirds parasitize 200+ species, recent evidence suggests that females avoid unsuitable hosts that either reject parasitic eggs or provide incompatible parental care. Female cowbirds may be able to improve their …
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Trophic and Competitive Interactions among Egg Parasitoids of Stink Bugs
… invasive species may be attractive as a prey or host to native species, but if unsuitable for consumption or for development of the natural enemy’s progeny, it constitutes an ‘evolutionary trap’. A possibility of such a trap for native egg parasitoids (Hymenoptera: Scelionidae) exists with the …
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Genomic insights into the evolution of the parasitoid Microctonus aethiopoides
Parasitoids are used as biocontrol agents in classical biological control programmes for controlling invasive pest populations. In Aotearoa New Zealand, there are two strains of Microctonus aethiopoides that have been used against two serious pest weevils of the Sitona group. However, there is …
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The life cycle of the parasite Pomphorhynchus tereticollis in reference to 0+ cyprinids and the intermediate host Gammarus spp in the UK.
… The species has an indirect life cycle which uses a Gammarus spp as an intermediate host and cyprinids and salmonids as final hosts although the main hosts are Squalis cephalus (S. cephalus) and Barbus barbus (B. barbus). Research on P. tereticollis has primarily focused on mature fish while …