BIO205H5 Lecture 4: Ecology lecture 4
Document Summary
An adaption is any characteristic that is inherited and shows a benefit to the species. (i. e. keromde bear) Organisms are adapted to deal with low temperatures: Blood returning to the body are warned up with the arterial blood. Have mitochondria that heat themselves up 10c higher. Not all evolutionary changes are adaptions, only the ones that are positive. Pearls inject their algae even if it"s by only one degree. Need to know what environment they live in to know how they live. Organisms are have flexibility at different temperature- adaption. Even within small groups, there is a lot of diversity. The organisms that live longer invest more time in the children. The larger the organism the longer they live. The principle of allocation requires trade-offs: not enough food/ resources. A resource that is used for one aspect of the life history cannot be also used for another: maximum fitness cannot be achieved by maximizing all life history traits.
