BIOL 369 Study Guide - Midterm Guide: Nuptial Gift, Concealed Ovulation, Spermatophore
10 Dec 2017
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Actually, changed my mind, we"re gonna rock it final stretch! First spermatophores (which the female may eat some or all of), them spermatophylax (gelatinous bulb addition to the spermatophore to delay the female"s consumption of the sperm-containing portion) Exposed spermatophore, then females eating spermatophore (basal, as shown by. Encourages polyandry in females in order to increase material gifts, but also promoted strategies of paternity assurance (e. g. induction of immediate egg- laying/sperm use, anti-aphrodisiacs) Also blood meals and wing meals are examples. Territory defense may be used as a stationary nuptial gift (e. g. male hummingbirds guarding nectaries) Coupling of preference of trait and arbitrary trait. Not motivated by mate harm, just a trait. Starts when choosey females only mate with elaborate males, non-choosey females will mate randomly (so with trait-holding males 50% of the time). The trait is passed on to sons, preference to daughters, and so it spreads.
