11:216:269 Lecture Notes - Lecture 8: Sphex, Inbreeding Depression, Freerunning
19 Sep 2018
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To go from summer to winter, there is a gradual increase in daylight. If they were to be placed in a completely dark environment, the clock would be come free running and adjust itself about 10 minutes everyday. Orientation: all animals have an orientation behavior. If the wasp used landmarks, the wasp would not nd nest and that is what happened. (3) olfactory (a) salmon, (b) whales: compass orientation (1) tells the animal a particular direction (2) Count number of steps to see how long home is. Short legs - would not make it all the way. 3: north to south america - birds are accompanied by 5 million raptors. Inclement weather - spring and fall: lapland longspurs - snow storm, 1. 5 million dead birds, obstacles, building, airplanes, windmills, bene ts, better resources - found shelter, reduce intraspeci c competition, reduce predation pressure. Dispersal - no speci c direction: natal dispersion.
