BI308 Lecture Notes - Lecture 24: Brood Parasite, Internal Fertilization
Document Summary
Example: mammal and birds, internal fertilization female doesn"t have the ability to immediately abandon may can leave as soon as sperm is in. Cruel bind could potentially benefit from abandoning but they can"t. In fish, a female could drop eggs then male drops sperm, then the female could have potential to get away. This idea who releases gametes first doesn"t explain why males build the nest structure firs then(not a good explanation: between parents and offspring. Parental effort comes at a cost in terms of ability to provide care in the future, parents should be selective to how much they give to current brood and what they save for future brood. Any parental care it gets directly benefits the offspring. In conflict, offspring want more, parents want a limit. Parents are bigger and can control how much care they deliver. As offspring get less likely to starve (older), parents deliver less food.
