Male sperm expenditure under sperm competition risk and intensity in quacking frogs
In the frog Crinia georgiana, reproductive behavior comprises a "guarding tactic," in which males defend spawn sites and attract females by calling, and a "sneak tactic," in which males join spawning pairs. The aims of the present study were to (1) relate ejaculate expenditure by "guarding" and "sneak" males to their probability of mating with other males present (sperm-competition risk), and (2) determine if males adjust their ejaculate expenditure according to the number of males involved in...[Show more]
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