کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5911867 1161373 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A virulent parasite can provide protection against a lethal parasitoid
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
A virulent parasite can provide protection against a lethal parasitoid
چکیده انگلیسی

Hosts often become infected with multiple parasite strains or species. Previous work has shown that the outcome of infections with multiple parasite strains or species often differs significantly from that of single infections, making them a potentially important factor in determining the prevalence and spread of disease. Here we show that infection with a virulent parasite increases host survival during later exposure to a lethal parasitoid. Specifically, when monarch butterfly larvae (Danaus plexippus) are inoculated with the virulent protozoan parasite Ophryocystis elektroscirrha and then attacked by the lethal parasitoid fly Lespesia archippivora, survival is higher than when the larvae are exposed to the parasitoid only. This is potentially a result of the protozoan's requirement for host survival to obtain between-host transmission. Our findings suggest that a virulent parasite can play a protective role for its host and indicate that parasites can act as mutualists depending on the presence of other parasites. We emphasize the importance of considering infection in an ecological context, including the presence of competing parasites.

Research highlights▶ We measure the outcome of single versus multiple infections. ▶ The outcome of multiple infections differs from that of single infection. ▶ A virulent parasite increases host survival in the present of a lethal parasitoid. ▶ The cost of parasitism to the host is context dependent.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Infection, Genetics and Evolution - Volume 11, Issue 2, March 2011, Pages 399-406
نویسندگان
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