Impacts of environmental heterogeneity on alternative mating tactics in the threadtail damselfly |
| |
Authors: | Brenda Larison |
| |
Institution: | (1) Department of Ecology and Evolutionary Biology, University of California, Los Angeles, 621 Charles E. Young Drive So., Los Angeles, CA 90095, USA |
| |
Abstract: | Environmental heterogeneity, including variation in the physical environment, may be key to understanding the evolution and
maintenance of alternative mating tactics, but its influence is rarely examined. Males of the threadtail damselfly Protoneura amatoria reversibly use two alternative mating tactics (perching vs. hovering) and have previously been found to modulate their use
of these tactics in response to variation in both light conditions and the density of ovipositing females. Here, I show that
mating success payoffs of the two tactics are differentially influenced by these factors. The payoff of the perching tactic
was greater than that of the hovering tactic under low light conditions and at low densities of ovipositing females. The payoff
of the hovering tactic was greater under high light conditions and higher densities of ovipositing females. The differential
success of the two mating tactics in response to light conditions is discussed in light of flight dynamics, vision, and predation. |
| |
Keywords: | Phenotypic plasticity Physical environment Odonata |
本文献已被 SpringerLink 等数据库收录! |
|