You are not logged in.

Environmental and senescent related variations in Weddell seal body mass : implications for age-specific reproductive performance

Proffitt, Kelly M., Garrott, Robert A., Rotella, Jay J. and Wheatley, Kathryn E. 2007, Environmental and senescent related variations in Weddell seal body mass : implications for age-specific reproductive performance, Oikos, vol. 116, no. 10, pp. 1683-1690, doi: 10.1111/j.0030-1299.2007.16139.x.

Attached Files
Name Description MIMEType Size Downloads

Title Environmental and senescent related variations in Weddell seal body mass : implications for age-specific reproductive performance
Author(s) Proffitt, Kelly M.
Garrott, Robert A.
Rotella, Jay J.
Wheatley, Kathryn E.
Journal name Oikos
Volume number 116
Issue number 10
Start page 1683
End page 1690
Publisher Wiley - Blackwell Publishing
Place of publication Malden, Mass.
Publication date 2007-10
ISSN 0030-1299
1600-0706
Summary Recent studies have found age-specific variations in reproductive performance amongst Weddell seals, Leptonychotes weddellii, and we hypothesized age-related variations in maternal body mass as a mechanism linking maternal age and the observed patterns of reproductive performance. We evaluated the effects of maternal traits such as age and reproductive experience and the effects of environmental variations on maternal body mass at parturition. Maternal body mass at parturition showed substantial age- and environmental-related variations. Maternal body mass increased with age through the young and middle ages, and evidence of senescent declines in body mass was found amongst the oldest ages. Additionally, body mass at parturition was strongly influenced by environmental variations during the pregnancy period, specifically sea-ice extent and the state of the El-Niño Southern Oscillation. Patterns of age-specific variations in body mass were consistent with age-specific patterns of offspring survival probability, which supported our hypothesis that changes in body mass link maternal age and reproductive performance in the Weddell seal. Further, environmental conditions during pregnancy may be an important component of Weddell seal reproductive performance.
Language eng
DOI 10.1111/j.0030-1299.2007.16139.x
Field of Research 050101 Ecological Impacts of Climate Change
060205 Marine and Estuarine Ecology (incl Marine Ichthyology)
Socio Economic Objective 960801 Antarctic and Sub-Antarctic Flora, Fauna and Biodiversity
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2007, Oikos
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039825

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

Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 33 times in TR Web of Science
Scopus Citation Count Cited 33 times in Scopus
Google Scholar Search Google Scholar
Access Statistics: 61 Abstract Views, 0 File Downloads  -  Detailed Statistics
Created: Tue, 01 Nov 2011, 13:13:17 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.