BIOL 4471 Chapter Notes - Chapter 11: Siblicide, Parental Investment, Parasitism
Document Summary
Costs and benefits of parental care: feeding young can increase survival chances of offspring or can reduce survival of both offspring and parents. If parents have high mortality rates, they invest more time and protection over broods since they may be unable to survive and reproduce later in the future. Why do females provide all of care in treehoppers: ancestral state reconstruction shows when behavior evolved, there were 3 probable origins of maternal care in the species. Why do females care: costs reduced future reproductive success by caring for young. Why do males care: females reap higher benefits from parental care due to their assurance of genetic relatedness and because they can defray some of cost of lost mating opportunities by produced mixed paternity broods. Reactions of nest defending bluegill males to potential egg and fry predators under two. Conditions: males of this species defend eggs and fry in their nests against predatory fish.
