Growth in harbour seals ( Phoca vitulina) on the Norwegian coast

The weight gain in lactating harbour seal pups and sex‐specific growth curves are described. The relationship between body length, body weight and age were derived by regression analysis based on length and age data from 365 seals, and weight values from 136 seals. The asymptotic values of the curve...

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Bibliographic Details
Published in:Journal of Zoology
Main Authors: Markussen, N. H., Bjørge, A., ØRitsland, N. A.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 1989
Subjects:
Online Access:http://dx.doi.org/10.1111/j.1469-7998.1989.tb02591.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1989.tb02591.x
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1989.tb02591.x
https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1989.tb02591.x
Description
Summary:The weight gain in lactating harbour seal pups and sex‐specific growth curves are described. The relationship between body length, body weight and age were derived by regression analysis based on length and age data from 365 seals, and weight values from 136 seals. The asymptotic values of the curves describing body length were 148.0 cm and 147.2 cm in females and 153.9 cm and 155.5 cm in males using Gompertz and von Bertalanffy, respectively. The corresponding body weight values were 72.8 kg and 76.7 kg in females and 90.7 kg and 88.4 kg in males.