Body growth in Hawaiian monk seals
Article first published online: 25 APR 2013
Published 2013. This article is a U.S. Government work and is in the public domain in the USA.
Marine Mammal Science
How to Cite
Baker, J. D., Johanos, T. C., Wurth, T. A. and Littnan, C. L. (2013), Body growth in Hawaiian monk seals. Marine Mammal Science. doi: 10.1111/mms.12035
- Article first published online: 25 APR 2013
- Manuscript Accepted: 22 FEB 2013
- Manuscript Received: 15 NOV 2012
- Hawaiian monk seal;
- Monachus schauinslandi ;
- body growth;
- von Bertalanffy
Body length and axillary girth measurements of more than 600 free-ranging Hawaiian monk seals from 1 to 20 yr old were analyzed. Comparison of fitted von Bertalanffy growth models confirmed there is no evidence of sexual dimorphism in this species. Substantial differences in growth patterns were detected among seven subpopulations representing the species entire geographic range. The age at which seals would be expected to attain a reference length of 180 cm ranged from just over 3 yr up to almost 7 yr at the various sites. Subpopulations exhibiting slower growth have previously been found to also exhibit lower age-specific reproductive rates. Differences in growth of seals among sites likely indicate varying environmental conditions determining growth during the time periods represented in the sampled data.