BIOL 111 Lecture Notes - Reciprocal Altruism, Daphnia, Behavioral Ecology

• School: McGill University
• Department: Biology
• Course: BIOL 111
• Professor: Andrew Hendry , Elena Melania Cristescu , Anna Lesley Hargreaves

Document Summary

Study of interactions between organisms and their environment. Want to eat most high quality salmon. Bears should eat the newest arriving most energy rich fish. Hard to catch in deeper water, so they may eat energy poor fish. If you eat dirt you can protect yourself from toxins. Helping others reproduce and not doing so yourself. Prediction: animals preferentially help their kin because doing so increases reproduction of alleles they both carry. 20% help cousins, 80% for full siblings. You can never reproduce yourself, only up to 50% of yourself. Serves same purpose of passing genes on to the next generation. If it helps the group as a whole, you became more successful. Susceptible to selfish mutation, receives group benefit without the cost. Age of maturity for cod was earlier and earlier and cod were getting smaller as they were being intensely fished, way fewer eggs out there to increase population.