C Mi@: Iwez
On Oct 18, 2010, at 1:10 AM, Layla Osman <[email protected]> wrote: > I wish to note the availability of one recent publication concerning > Growth rates and maternal investment in Fur seals. Abstract appear > below and the paper is available at: > > http://www.bioone.org/doi/abs/10.1644/09-MAMM-A-197.1 > > Growth rates and differential investment in male and female Juan > Fernandez fur seal pups > > LAYLA P. OSMAN,* CARLOS A. MORENO, AND ANDREW W. TRITES > > Instituto de Ecologı´a y Evolucio´n, Universidad Austral de Chile, > Casilla 567, Valdivia, Chile (LPO, CAM) > Marine Mammal Research Unit, Fisheries Centre, Room 247, 2202 Main > Mall, AERL, University of British Columbia, > Vancouver, British Columbia V6T 1Z4, Canada (AWT) > * Correspondent: [email protected] > > Male Juan Ferna´ndez fur seals (Arctocephalus philippii) are > significantly larger than females at birth and show > extreme dimorphism as adults. We investigated morphological > differences among male and female pups using a > cross-sectional sampling design to evaluate whether pup growth rates > were sex-specific during the breeding > season. We characterized growth rates using mass, length, and girth > and found that length was the least variable > measure of body growth (based on the coefficients of variation for the > 3 measures of body size). Male pups were > heavier on average than female pups on any given day of sampling but > did not grow faster than females. No > significant differences were noted in the body conditions of male and > female pups. These findings suggest that > the sexual differences among pups of A. philippii originate before > birth and are not accentuated while suckling > during the breeding season. DOI: 10.1644/09-MAMM-A-197.1. > > Key words: Arctocephalus philippii, Juan Ferna´ndez Archipelago, Juan > Ferna´ndez fur seals, maternal investment, pup > growth rates, sexual dimorphism, sexual variatio > > Layla Osman > > -- > Dr. Layla P. Osman > Instituto de Ecología y Evolución > Universidad Austral de Chile > P.O. Box 567, Valdivia, Chile. > Phone: 56-63-221486 > Fax: 56-63-221344 > Cell phone: 76681230 > www.ecolevol.cl > > _______________________________________________ > MARMAM mailing list > [email protected] > https://lists.uvic.ca/mailman/listinfo/marmam _______________________________________________ MARMAM mailing list [email protected] https://lists.uvic.ca/mailman/listinfo/marmam
