Weaning mass and the future survival of juvenile southern elephant seals, Mirounga leonina, at Macquarie Island

Clive R. McMahon*, Harry R. Burton, Marthán N. Bester

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

138 Citations (Scopus)

Abstract

Seals that survived their first year were on average 2% and 4% heavier at birth and at weaning than the 'non-survivors'. First year survival rates calculated for weaners over 135 kg weaning masses showed these weaners had higher survival rates than those less than 95 kg at weaning (71.55% and 54.15% respectively). Heavy weaners had greater fat reserves than light weaners and gained relatively more mass during lactation. Size, and therefore condition at weaning, influences first year survival.

Original languageEnglish
Pages (from-to)149-153
Number of pages5
JournalAntarctic Science
Volume12
Issue number2
Publication statusPublished - Jun 2000
Externally publishedYes

Keywords

  • Condition
  • Maternal expenditure
  • Southern elephant seal
  • Survival
  • Wean mass

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