BIO 3176 Lecture Notes - Lecture 8: Garter Snake, Eg White, List Of Mammalian Gestation Durations
16 Oct 2017
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Make sure that you are explaining ultimate not just proximate causes. Judging the alternating of the light dark period. Light in the second half of the day threshold. Growth of testes in preparation for mating season. Put light in the second half of photoperiod. Therefore it is not amount of light, it is when. If no rain water --> no plants would bloom -> no food for young. Presence of rain is greatest stimulus, most appropriate cue. All these happen after the rain --> rain is the stimulus. Meaning the impact of interacting with other members of their species will affect their behavior. They will affect their behavior according to the situation. Female mice can sniff two males, sniffing time is preference. Hormonal mechanism for her to be primed in some way to be receptive to dom males. Behavior of male who will kill all infants around him for 3 weeks and then will become non-aggressive.
