Global warming, Bergmann's rule and body mass - are they related? The chukar partridge (Alectoris chukar) case

Yom-Tov, Y, Benjamini, Y and Kark, S (2002) Global warming, Bergmann's rule and body mass - are they related? The chukar partridge (Alectoris chukar) case. Journal of Zoology, 257 4: 449-455. doi:10.1017/S095283690200105X


Author Yom-Tov, Y
Benjamini, Y
Kark, S
Title Global warming, Bergmann's rule and body mass - are they related? The chukar partridge (Alectoris chukar) case
Journal name Journal of Zoology   Check publisher's open access policy
ISSN 0952-8369
Publication date 2002-08-01
Year available 2002
Sub-type Article (original research)
DOI 10.1017/S095283690200105X
Open Access Status Not yet assessed
Volume 257
Issue 4
Start page 449
End page 455
Total pages 7
Place of publication NEW YORK
Publisher CAMBRIDGE UNIV PRESS
Language eng
Abstract Using museum specimens collected in Israel during the second half of the 20th century, no support was found for the hypothesis that body mass and tarsus length of chukar partridges Alectoris chukar has changed as a result of global warming. Body mass showed fluctuations during the year, reaching a maximum in late winter and spring and a minimum in summer. Bergmann's rule predicts that in warm-blooded animals, races from warm regions will be smaller than races from colder regions, and a wider explanation states that body size is positively related to latitude. Because of its topography and varied climate, Israel provides a unique opportunity to separate partly the effect of latitude from that of ambient temperature, thus testing if Bergmann's rule is related to latitude or to climatic variables. We found that body mass (and marginally also tarsus length) declined significantly with decreasing latitude in accordance with the wider explanation of Bergmann's rule, but ambient temperature explained a much smaller fraction of the variation in body mass than latitude. These results weaken the traditional explanation to Bergmann's rule that a heat conservation mechanism causes the latitudinal size variation.
Keyword chukar partridge
Alectoris chukar
body mass
Bergmann's rule
Allen's rule
global warming
Israel
Birds
Israel
Size
Temperature
Mammals
Climate
Trends
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: ResearcherID Downloads - Archived
 
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