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Body size changes among otters, Lutra lutra, in Norway: the possible effects of food availability and global warming.

https://arctichealth.org/en/permalink/ahliterature81316
Source
Oecologia. 2006 Nov;150(1):155-60
Publication Type
Article
Date
Nov-2006
Author
Yom-Tov Yoram
Heggberget Thrine Moen
Wiig Oystein
Yom-Tov Shlomith
Author Affiliation
Department of Zoology, Tel Aviv University, Tel Aviv, 69978, Israel. yomtov@post.tau.ac.il
Source
Oecologia. 2006 Nov;150(1):155-60
Date
Nov-2006
Language
English
Publication Type
Article
Keywords
Animals
Body Size - physiology
Diet
Geography
Greenhouse Effect
Norway
Otters - physiology
Regression Analysis
Abstract
Using museum data of adult specimens whose sex, age, and locality are known, we studied temporal and geographical body size trends among the otter, Lutra lutra, in Norway. We found that body size of the otters increased during the last quarter of the twentieth century, and suggest that this trend is related to increased food availability from fish farming and possibly also to energy saving due to elevated sea temperatures. Birth year and death year explained 38.8 and 43.5%, respectively, of the variation in body size. Body size of otters was positively related to latitude, thus conforming to Bergmann's rule.
PubMed ID
16868759 View in PubMed
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