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Sexual Conflict and Polyspermy under Sperm‐Limited Conditions: In Situ Evidence from Field Simulations with the Free‐Spawning Marine Echinoid Evechinus chloroticus
Both sexual conflict related to polyspermy and sperm limitation have been simultaneous strong selective forces shaping the evolution of reproductive traits in the sea. Expand
Nectar sugar preferences and absorption in a generalist African frugivore, the Cape White‐eye Zosterops pallidus
Cape White-eyes thus resemble specialized southern African nectarivores (Nectariniidae, Promeropidae) in their responses to nectar sugars. Expand
Does spawning depth affect fertilization rates? Experimental data from the sea star Coscinasterias muricata
The results from Coscinasterias indicate that movements into shallow water at the time of spawning, which have been reported in several asteroid species, may provide little reproductive advantage in environments experiencing net flow conditions. Expand
Aspects of Fertilization Ecology in Evechinus chloroticus and Coscinasterias muricata
Simulated field studies in Evechinus chloroticus and Coscinasterias muricata and laboratory results showed that polyspermy is most likely to increase when sperm concentrations are increased, and even though increasing sperm concentrations increases monospermy to a certain extent, an increase in gamete contact times generates similar levels of monosPermy. Expand
Evolution of egg size and fertilisation efficiency in sea stars: large eggs are not fertilised more readily than small eggs in the genus Patiriella (Echinodermata: Asteroidea)
It is concluded that there must be a difference between these species in the likelihood that when a sperm finds a conspecific egg it can successfully fertilise, and that fertilisation is not a major constraint on the evolution of egg size in these seastars. Expand
In “Sexual conflict and polyspermy under sperm-limited conditions: in situ evidence from field simulations with the free-spawning marine echinoid Evechinus chloroticus” by E. S. Franke, R. C.Expand