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dc.contributor.author Therese, M.O. en
dc.contributor.author Bashey, F. en
dc.date.accessioned 2014-07-23T20:09:37Z en
dc.date.available 2014-07-23T20:09:37Z en
dc.date.issued 2012 en
dc.identifier.citation Therese, M. O., & Bashey, F. (2012). Natal-host environmental effects on juvenile size, transmission success, and operational sex ratio in the entomopathogenic nematode Steinernema carpocapsae. Journal of Parasitology, 98(6), 1095-1100. http://dx.doi.org/10.1645/GE-3069.1 en
dc.identifier.uri https://hdl.handle.net/2022/18508
dc.description.abstract Trans-host effects can alter the ecological and evolutionary dynamics of parasite and host populations. Here, we examine whether resource limitation within a parasite's natal host affects propagule size and influences parasite fitness in a new host. To alter resource competition, we infected caterpillars with 3 doses of the nematode Steinernema carpocapsae and harvested transmission-stage juveniles either early or late in the infection. We measured the size of these juveniles, and then we examined their ability to colonize and their sex ratio upon maturity in a new host. We found a trade-off between the cumulative number and size of nematodes emerging from a host. Emerging nematode size declined significantly over the time course of the infection, but dose had no significant effects. Larger, early emerging nematodes had greater success in colonizing a new host than smaller, later emerging nematodes, independently of whether they needed to locate the host. Furthermore, although early emerging nematodes resulted in an equal sex ratio in the new host, late emerging nematodes resulted in female-biased populations. These transmission and sex-ratio effects demonstrate that conditions in the natal host can affect parasite fitness, and they suggest that trans-host effects need to be more fully integrated into our studies of parasite populations. en
dc.language.iso en_US en
dc.publisher American Society of Parasitologists en
dc.relation.isversionof https://doi.org/10.1645/GE-3069.1 en
dc.rights © 2012 American Society of Parasitologists en
dc.subject caterpillar en
dc.subject entomopathogenic organism en
dc.subject environmental effect en
dc.subject fitness en
dc.subject infectious disease en
dc.subject juvenile en
dc.subject nematode en
dc.subject parasite transmission en
dc.subject propagule en
dc.subject sex ratio en
dc.subject controlled study en
dc.subject entomopathogenic nematode en
dc.subject environmental factor en
dc.subject host en
dc.subject microbial colonization en
dc.subject nematodiasis en
dc.subject nonhuman en
dc.subject parasite transmission en
dc.subject sex ratio en
dc.subject Steinernema carpocapsae en
dc.subject Animals en
dc.subject Environment en
dc.subject Female en
dc.subject Host-Parasite Interactions en
dc.subject Larva en
dc.subject Male en
dc.subject Moths en
dc.subject Rhabditida en
dc.subject Sex Ratio en
dc.subject Nematoda en
dc.subject Steinernema carpocapsae en
dc.title Natal-host environmental effects on juvenile size, transmission success, and operational sex ratio in the entomopathogenic nematode Steinernema carpocapsae en
dc.type Article en
dc.altmetrics.display false en


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