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Cassandra Gergis Nicole Ghafourian & Simon Stewart

Another genetically promiscuous ‘ polygynous ’ mammal: mating system variation in Neotoma fuscipes. Cassandra Gergis Nicole Ghafourian & Simon Stewart.

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Cassandra Gergis Nicole Ghafourian & Simon Stewart

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  1. Another genetically promiscuous ‘polygynous’ mammal: mating system variation in Neotomafuscipes Cassandra Gergis Nicole Ghafourian & Simon Stewart Eadie, J. M., McEachern, M.B., McElreath, R. L., Van Vuren, D. H. (2009). Another genetically promiscuous ‘polygynous’ mammal: Mating system variation in Neotomafuscipes. Animal Behaviour 77, 449-455.

  2. What are the “Mating Systems?” • Polygyny – one male mating with two or more females • Polyandry – one female mating with two or more males • Monogamy – one male one female mating exclusively during breeding season • Promiscuity – both sexes mating with multiple partners nonexclusively Dusky-footed Woodrats (Neotomafuscipes) Eadie, J. M., McEachern, M.B., McElreath, R. L., Van Vuren, D. H. (2009). Another genetically promiscuous ‘polygynous’ mammal: Mating system variation in Neotomafuscipes. Animal Behaviour 77, 449-455.

  3. Hypotheses • Is mating random? • Is mating influenced by population density? • Is mating influenced by operational sex ratio (OSR)? • Is mating influenced by pairwise distance? • Is mating influenced male body mass? Eadie, J. M., McEachern, M.B., McElreath, R. L., Van Vuren, D. H. (2009). Another genetically promiscuous ‘polygynous’ mammal: Mating system variation in Neotomafuscipes. Animal Behaviour 77, 449-455.

  4. Results • Mating was not random • Mating was influenced by population density • Mating was influenced by operational sex ratio (OSR) • Mating is influenced by pairwise distance • Mating is NOT influenced by male body mass Eadie, J. M., McEachern, M.B., McElreath, R. L., Van Vuren, D. H. (2009). Another genetically promiscuous ‘polygynous’ mammal: Mating system variation in Neotomafuscipes. Animal Behaviour 77, 449-455.

  5. Critical Review A. Population density B. Their characterization of the mating system does not include unsuccessful mating attempts C. Researchers are unclear in results section regarding the individual significance of variables/hypotheses in mating system selection.

  6. Video Clip • http://www.youtube.com/watch?v=xpGmywiMHHQ Eadie, J. M., McEachern, M.B., McElreath, R. L., Van Vuren, D. H. (2009). Another genetically promiscuous ‘polygynous’ mammal: Mating system variation in Neotomafuscipes. Animal Behaviour 77, 449-455.

  7. Discussion Questions • Questions or comments • The characterization of the mating system does not include unsuccessful mating attempts, how do you think this would effect the validity of the results?

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