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Mate choice is affected by parasite infestation rate of the choosing individual as well as of potential mating partners

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Current Zoology 2023年第5期69卷 559-567页

作者： Alejandro Cantarero olga vdolnik Matteo Griggio Herbert Hoi Department of Physiology Veterinary SchoolComplutense University of MadridAvenida Puerta de Hierro s/n28040 MadridSpain Department of Integrative Biology and Evolution Konrad Lorenz Institute of Ethology(KLIVV)University of Veterinary Medicine ViennaSavoyenstraße 1aA-1160 ViennaAustria Dipartimento di Biologia Universitàdi PadovaVia U.Bassi 58/BI-35131 PadovaItaly

Parasites are known to be a key driving force in mate choice and are important for the expression and evolution of ornaments and behavioral traits being ***,there is little experimental evidence on how the parasite’s burden of the choosing individual is integrated into the mate-choice process and how it affects decision-making,especially in relation to parasite infestation of potential ***,the aim of our study was to determine whether female house sparrows Passer domesticus adjust their mate preference according to their own as well as the parasite load of prospective *** do this,we experimentally manipulated female parasite load and determined their mate preferences prior to and after parasite *** manipulated the chronic coccidian parasite burden of females either by initiating the acute infection phase via re-infecting them with coccidian or by temporally reducing the parasite load of *** then measured the effect of this manipulation on mate preference by presenting females with a choice of four stimuli:three males with similar ornaments,but unmanipulated,naturally varying chronic coccidiosis levels,and an unmanipulated control ***,we recorded some males’behavior in relation to their infection status pointing toward an increased or reduced interest in *** found that females preferred highly infested males prior to manipulation,regardless of their own infestation ***,after manipulation,infested females avoided highly infested males probably in response to the deterioration of their health condition by *** study suggests that mate-choice decisions are more complex when they are mediated by *** implications of parasites for evolutionary theories of sexual signaling and mate choice are discussed.

关键词： coccidiosis female decision mate choice parasites Passer domesticus Isospora spp

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