Effect of ambient air temperature on food intake of captive sub-adult Great Cormorants Phalacrocorax carbo hanedae

Kentaro Kazama; Mami T. Iwamoto; Yukiko Hori; Yasuaki Niizuma

doi:10.3312/jyio.45.46

Effect of ambient air temperature on food intake of captive sub-adult Great Cormorants Phalacrocorax carbo hanedae

Kentaro Kazama^*, Mami T. Iwamoto, Yukiko Hori, Yasuaki Niizuma

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Daily food intake and changes in body mass of five, hand-reared sub-adult Great Cormorants Phalacrocorax carbo hanedae were measured in an outdoor cage over 117 days during winter and spring. During the period of the study, the five birds maintained almost constant body masses, despite variation in their daily food intake (they were fed ad lib). Daily food intake mass per unit body mass of individuals decreased significantly as the ambient air temperature increased, but daily body mass increment per unit body mass of individuals did not. These results indicate that the daily energy expenditure of cormorants decreases as ambient air temperature increases, probably because of the suppression of thermoregulation costs.

Original language	English
Pages (from-to)	46-52
Number of pages	7
Journal	Journal of the Yamashina Institute for Ornithology
Volume	45
Issue number	1
DOIs	https://doi.org/10.3312/jyio.45.46
Publication status	Published - 2013 Jan 1
Externally published	Yes

Keywords

Ambient temperature
Body mass
Food intake
Great cormorant
Record keeping

ASJC Scopus subject areas

Animal Science and Zoology

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10.3312/jyio.45.46

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abstract = "Daily food intake and changes in body mass of five, hand-reared sub-adult Great Cormorants Phalacrocorax carbo hanedae were measured in an outdoor cage over 117 days during winter and spring. During the period of the study, the five birds maintained almost constant body masses, despite variation in their daily food intake (they were fed ad lib). Daily food intake mass per unit body mass of individuals decreased significantly as the ambient air temperature increased, but daily body mass increment per unit body mass of individuals did not. These results indicate that the daily energy expenditure of cormorants decreases as ambient air temperature increases, probably because of the suppression of thermoregulation costs.",

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AU - Hori, Yukiko

AU - Niizuma, Yasuaki

PY - 2013/1/1

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Effect of ambient air temperature on food intake of captive sub-adult Great Cormorants Phalacrocorax carbo hanedae

Abstract

Keywords

ASJC Scopus subject areas

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