TY - JOUR
T1 - Body size changes among otters, Lutra lutra, in Norway
T2 - The possible effects of food availability and global warming
AU - Yom-Tov, Yoram
AU - Heggberget, Thrine Moen
AU - Wiig, Øystein
AU - Yom-Tov, Shlomith
N1 - Funding Information:
was partially financed by the Israel Cohen Chair for Environmental Zoology to Y. Yom-Tov.
PY - 2006/11
Y1 - 2006/11
N2 - 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.
AB - 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.
KW - Bergmann's rule
KW - Fish farming
UR - http://www.scopus.com/inward/record.url?scp=34648818331&partnerID=8YFLogxK
U2 - 10.1007/s00442-006-0499-8
DO - 10.1007/s00442-006-0499-8
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AN - SCOPUS:34648818331
SN - 0029-8549
VL - 150
SP - 155
EP - 160
JO - Oecologia
JF - Oecologia
IS - 1
ER -