Evol Ecol Res 18: 335-348 (2017) Full PDF if your library subscribes.
Evolution of density-dependent wing polymorphism in insects
Takahiro Kamioka and Yoh Iwasa
Department of Biology, Faculty of Science, Kyushu University, Fukuoka, Japan
Correspondence: Y. Iwasa, Department of Biology, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan. email: email@example.com
Questions: What are the conditions that lead to the evolution of density-dependent dispersal in wing-polymorphic insects?
Key assumptions: An asexual species whose eggs, larvae, and adult stages live in many patches. Within each patch, larval growth rate depends on the amount of renewable resources that are consumed by the larvae. Dispersal-type adults migrate out of the natal patch just before the reproductive stage. In contrast, reproductive-type adults are highly fertile but do not have the ability to disperse far. Genotypes differ in the way the fraction of the dispersal type responds to density during the larval stages. The carrying capacity of the resources fluctuates between high and low values.
Results: Density-dependent dispersal evolved if environmental fluctuation was high. The dispersal type was produced if the density exceeded a certain threshold, with the rate increasing as density increased. In contrast, no dispersal type evolved if environmental fluctuation was low. Also, the tendency for density dependence to evolve is enhanced by slow growth and fast mortality of larvae, high dispersal mortality, a rapid resource recovery rate, and rapid environmental fluctuation.
Keywords: density-dependent dispersal, environmental fluctuation, growth of insects, resource dynamics, wing polymorphism.
DOWNLOAD A FREE, FULL PDF COPY
IF you are connected using the IP of a subscribing institution (library, laboratory, etc.)
or through its VPN.
© 2017 Yoh Iwasa. 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.