Openly accessible

Ontogeny of body size and shape of Antarctic and subantarctic fur seals

Luque, Sebastiàn, Miller, Edward, Arnould, John, Chambellant, Magaly and Guinet, Christophe 2007, Ontogeny of body size and shape of Antarctic and subantarctic fur seals, Canadian journal of zoology, vol. 85, no. 12, pp. 1275-1285.

Attached Files
Name Description MIMEType Size Downloads
arnould-ontogenyofbodysize-2007.pdf Published version application/pdf 147.20KB 310

Title Ontogeny of body size and shape of Antarctic and subantarctic fur seals
Author(s) Luque, Sebastiàn
Miller, Edward
Arnould, John
Chambellant, Magaly
Guinet, Christophe
Journal name Canadian journal of zoology
Volume number 85
Issue number 12
Start page 1275
End page 1285
Publisher NRC Research Press
Place of publication Ottawa, Ontario
Publication date 2007
ISSN 1480-3283
Keyword(s) arctocephalus gazella
arctocephalus tropicalis
allometry
body mass
body size
preweaning growth
Summary Pre- and post-weaning functional demands on body size and shape of mammals are often in conflict, especially in species where weaning involves a change of habitat. Compared with long lactations, brief lactations are expected to be associated with fast rates of development and attainment of adult traits. We describe allometry and growth for several morphological traits in two closely related fur seal species with large differences in lactation duration at a sympatric site. Longitudinal data were collected from Antarctic (Arctocephalus gazella (Peters, 1875); 120 d lactation) and subantarctic (Arctocephalus tropicalis (Gray, 1872); 300 d lactation) fur seals. Body mass was similar in neonates of both species, but A. gazella neonates were longer, less voluminous, and had larger foreflippers. The species were similar in rate of preweaning growth in body mass, but growth rates of linear variables were faster for A. gazella pups. Consequently, neonatal differences in body shape increased over lactation, and A. gazella pups approached adult body shape faster than did A. tropicalis pups. Our results indicate that preweaning growth is associated with significant changes in body shape, involving the acquisition of a longer, more slender body with larger foreflippers in A. gazella. These differences suggest that A. gazella pups are physically more mature at approximately 100 d of age (close to weaning age) than A. tropicalis pups of the same age
Language eng
Field of Research 060803 Animal Developmental and Reproductive Biology
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2007, NRC Canada
Persistent URL http://hdl.handle.net/10536/DRO/DU:30007651

Document type: Journal Article
Collections: School of Life and Environmental Sciences
Open Access Collection
Connect to link resolver
 
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.

Versions
Version Filter Type
Citation counts: Scopus Citation Count Cited 2 times in Scopus
Google Scholar Search Google Scholar
Access Statistics: 518 Abstract Views, 310 File Downloads  -  Detailed Statistics
Created: Mon, 29 Sep 2008, 08:54:34 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.