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Plasticity of Maternal Care and Seasonal Manipulation of Masculinity in Peromyscus maniculatus

Show simple item record Stewart, Frances Elizabeth Cameron 2012-09-05T16:57:19Z 2012-09-05T16:57:19Z 2012-08 2012-08-24 2012-09-05
dc.description.abstract Individual variation in maternal care has been shown to have important consequences for offspring development, physiology, and behaviour. However, investigating the evolutionary consequences of differences in maternal behaviour requires the extension of well established protocols for measuring maternal behaviour in the lab to a wild rodent species. I investigated maternal care, and associations between secondary sex ratio and individual masculinity in regards to local resource competition, in a wild rodent: the woodland deer mouse (Peromyscus maniculatus gracillis). I demonstrated that 1) wild mice display similar behaviours as laboratory mice; 2) maternal care is a plastic phenotype that decreases as population density increases over one breeding season; 3) sex ratio is not manipulated in response to local resource competition; and 4) sex ratio and masculinity are correlated in this system, and decrease with increasing population density. I conclude that maternal care and offspring masculinity change over the course of one breeding season in a wild rodent, Peromyscus maniculatus. en_US
dc.description.sponsorship Natural Sciences and Engineering Research Council of Canada; Ontario Ministry of Economic Development and Innovation en_US
dc.language.iso en en_US
dc.publisher University of Guelph en_US
dc.subject Maternal care en_US
dc.subject Woodland deer mouse en_US
dc.subject Plastic phenotype en_US
dc.subject Sex ratio en_US
dc.subject Offspring masculinity en_US
dc.title Plasticity of Maternal Care and Seasonal Manipulation of Masculinity in Peromyscus maniculatus en_US
dc.type Thesis en_US Integrative Biology en_US Master of Science en_US Department of Integrative Biology en_US
dc.rights.license All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated. University of Guelph en_US

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