Evol Ecol Res 4: 181-187 (2002) Full PDF if your library subscribes.
Fluorescence in Asellus aquaticus (Isopoda: Asellota): a first approach
Martin Zimmer,* Sabine Geisler, Sylvia Walter and Heinz Brendelberger
Zoologisches Institut – Limnologie, Christian-Albrechts-Universität zu Kiel, Olshausenstr. 40, D-24098 Kiel, Germany
Author to whom all correspondence should be addressed.
In the freshwater isopod, Asellus aquaticus (Isopoda: Asellota), fluorescing metabolic products, stored in specialized cells, cause intraspecific variation in individual visibility. In many populations, 50–80% of isopods exhibit increased visibility under natural light conditions, which increases predation risk to these individuals. Furthermore, fluorescing isopods exhibit different behaviour with respect to sheltering. These individuals would be expected to be out-competed by their non-fluorescing conspecifics. However, assortative mating of fluorescing versus non-fluorescing isopods warrants reproduction in both phenotypes. We hypothesize possible causes of the isopods’ fluorescing appearance and present results that allow the predicted consequences to individual isopods to be tested.
Keywords: assortative mating, behavioural change, colour change, endoparasites, honest signal, metabolite storage, parasite-induced changes, predation risk.
DOWNLOAD A FREE, FULL PDF COPY
IF you are connected using the IP of a subscribing institution (library, laboratory, etc.)
or through its VPN.
© 2002 Martin Zimmer. All EER articles are copyrighted by their authors. All authors endorse, permit and license Evolutionary Ecology Ltd. to grant its subscribing institutions/libraries the copying privileges specified below without additional consideration or payment to them or to Evolutionary Ecology, Ltd. These endorsements, in writing, are on file in the office of Evolutionary Ecology, Ltd. Consult authors for permission to use any portion of their work in derivative works, compilations or to distribute their work in any commercial manner.
Subscribing institutions/libraries may grant individuals the privilege of making a single copy of an EER article for non-commercial educational or non-commercial research purposes. Subscribing institutions/libraries may also use articles for non-commercial educational purposes by making any number of copies for course packs or course reserve collections. Subscribing institutions/libraries may also loan single copies of articles to non-commercial libraries for educational purposes.
All copies of abstracts and articles must preserve their copyright notice without modification.