Evol Ecol Res 2: 1045-1066 (2000) Full PDF if your library subscribes.
Adaptive gamete allocation when fertilization is external and sperm competition is absent: Optimization models and evaluation using coral reef fish
Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA
Address all correspondence to Moshe Kiflawi, Institute of Evolution, University of Haifa, Mount Carmel, Haifa 31905, Israel.
I develop a series of optimization models of adaptive sperm allocation by external fertilizers when sperm competition is absent. The models differ with respect to either one or two of the following assumptions: the dependence of fertilization success on egg concentration; the optimization criteria (the maximization of per-spawn vs long-term average fitness); and the limiting factor on male reproduction (daily mate and sperm availability vs per-spawn mating costs). I propose that, a priori, these (and similar) models are often equally plausible. Consequently, strong inferences concerning the selective regime that led to the putative adaptation would be possible only upon the evaluation of conflicting predictions generated by the different models. I demonstrate this using published data on sperm allocation and fertilization success in pair-spawning coral reef fish.
Keywords: external fertilization, fish, optimization, sperm allocation.
DOWNLOAD A FREE, FULL PDF COPY
IF you are connected using the IP of a subscribing institution (library, laboratory, etc.)
or through its VPN.
© 2000 Moshe Kiflawi. 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.