Body condition and spring migration in female high-arctic barnacle geeseBranta leucopsis

1996 ◽  
Vol 2 (1) ◽  
pp. 247-251 ◽  
Author(s):  
Ingunn M. Tombre ◽  
Kjell E. Erikstad ◽  
Geir W. Gabrielsen ◽  
Karl-Birger Strann ◽  
Jeffrey M. Black
Keyword(s):  
Body Condition ◽  
High Arctic ◽  
Spring Migration

scholarly journals Harp seal body condition and trophic interactions with prey in Norwegian high Arctic waters in early autumn

2020 ◽  
pp. 102498
Author(s):  
Tore Haug ◽  
Martin Biuw ◽  
Harald Gjøsæter ◽  
Tor Knutsen ◽  
Ulf Lindstrøm ◽  
...  
Keyword(s):  
Body Condition ◽  
Trophic Interactions ◽  
High Arctic ◽  
Harp Seal ◽  
Early Autumn

scholarly journals Nutrient Reserves of Lesser Scaup (Aythya Affinis) During Spring Migration in the Mississippi Flyway: A Test of the Spring Condition Hypothesis

The Auk ◽  
2004 ◽  
Vol 121 (3) ◽  
pp. 917-929 ◽  
Author(s):  
Michael J. Anteau ◽  
Alan D. Afton
Keyword(s):  
Reproductive Success ◽  
Body Mass ◽  
Body Condition ◽  
Female Body ◽  
Population Decline ◽  
Spring Migration ◽  
Aythya Affinis ◽  
Lesser Scaup ◽  
Nutrient Reserves ◽  
Mineral Reserves

AbstractThe continental scaup population (Lesser [Aythya affinis] and Greater [A. marila] combined) has declined markedly since 1978. One hypothesis for the population decline states that reproductive success has decreased because female scaup are arriving on breeding areas in poorer body condition than they did historically (i.e. spring condition hypothesis). We tested one aspect of that hypothesis by comparing body mass and nutrient reserves (lipid, protein, and mineral) of Lesser Scaup at four locations (Louisiana, Illinois, Minnesota, and Manitoba) between the 1980s and 2000s. We found that mean body mass and lipid and mineral reserves of females were 80.0, 52.5, and 3.0 g higher, respectively, in the 2000s than in the 1980s in Louisiana; similarly, body mass and lipid and mineral reserves of males were 108.8, 72.5, and 2.5 g higher, respectively. In Illinois, mean body mass and lipid reserves of females were 88.6 and 56.5 g higher, respectively, in the 2000s than in the 1980s; similarly, body mass and lipid and mineral reserves of males were 80.6, 76.0, and 2.7 g higher, respectively. Mean body mass of females were 58.5 and 58.9 g lower in the 2000s than in the 1980s in Minnesota and Manitoba, respectively; mean body mass of males, similarly, were 40.7 g lower in Minnesota. Mean lipid reserves of females in the 2000s were 28.8 and 27.8 g lower than those in the 1980s in Minnesota and Manitoba, respectively. Mean mineral reserves of females in the 2000s were 3.2 g lower than those in the 1980s in Manitoba. Consequently, females arriving to breed in Manitoba in the 2000s had accumulated lipid reserves for 4.1 fewer eggs and mineral reserves for 0.8 fewer eggs than those arriving to breed there in the 1980s. Accordingly, our results are consistent with the spring condition hypothesis and suggest that female body condition has declined, as reflected by decreases in body mass, lipids, and mineral reserves that could cause reductions in reproductive success and ultimately a population decline.

Author response for "Environmental change reduces body condition, but not population growth, in a high‐arctic herbivore"

2020 ◽  
Author(s):  
Kate Layton‐Matthews ◽  
Vidar Grøtan ◽  
Brage Bremset Hansen ◽  
Maarten J. J. E. Loonen ◽  
Eva Fuglei ◽  
...  
Keyword(s):  
Environmental Change ◽  
Population Growth ◽  
Body Condition ◽  
High Arctic ◽  
Author Response

scholarly journals Effects of body condition and food intake on stop-over decisions in Garden Warblers and European Robins during spring migration

2017 ◽  
Vol 158 (4) ◽  
pp. 989-999 ◽  
Author(s):  
Sara Lupi ◽  
Ivan Maggini ◽  
Wolfgang Goymann ◽  
Massimiliano Cardinale ◽  
Alfonso Rojas Mora ◽  
...  
Keyword(s):  
Food Intake ◽  
Body Condition ◽  
Spring Migration

Spring Migration of Brent Geese Wintering in Japan Extends into Russian High Arctic

2017 ◽  
Vol 16 (2) ◽  
pp. 159-162 ◽  
Author(s):  
Tetsuo Shimada ◽  
Naoya Hijikata ◽  
Ken-ichi Tokita ◽  
Kiyoshi Uchida ◽  
Masayuki Kurechi ◽  
...  
Keyword(s):  
High Arctic ◽  
Spring Migration

Diet composition and body condition of polar bears (Ursus maritimus) in relation to sea ice habitat in the Canadian High Arctic

Polar Biology ◽  
2021 ◽  
Author(s):  
Katie R. N. Florko ◽  
Gregory W. Thiemann ◽  
Jeffrey F. Bromaghin ◽  
Evan S. Richardson
Keyword(s):  
Sea Ice ◽  
Body Condition ◽  
Diet Composition ◽  
High Arctic ◽  
Ursus Maritimus ◽  
Polar Bears ◽  
Canadian High Arctic
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