globalchange  > 气候减缓与适应
DOI: 10.1111/jzo.12624
WOS记录号: WOS:000458431500005
论文题名:
A temperate labrid fish demonstrates compensatory mechanisms to feed at torpor-inducing temperatures
作者: Moran, C. J.1,2; Carlowicz, R. M.2; Gerry, S. P.2
通讯作者: Moran, C. J.
刊名: JOURNAL OF ZOOLOGY
ISSN: 0952-8369
EISSN: 1469-7998
出版年: 2019
卷: 307, 期:2, 页码:125-130
语种: 英语
英文关键词: temperature ; kinematics ; torpor ; wrasse ; cunner ; Tautogolabrus adspersus ; feeding behavior
WOS关键词: PREY-CAPTURE KINEMATICS ; TAUTOGOLABRUS-ADSPERSUS ; ECTOTHERMIC VERTEBRATES ; CONTRACTILE PROPERTIES ; MYOTOMAL MUSCLE ; CLIMATE-CHANGE ; LONG-ISLAND ; SUCTION ; PERFORMANCE ; CUNNER
WOS学科分类: Zoology
WOS研究方向: Zoology
英文摘要:

Temperature can have profound impacts on fitness-related activities in fishes. Feeding is an ecologically relevant task which is controlled by muscle function. Consequently, in ectotherms, muscle function and feeding kinematics can be altered by temperature. This study investigated the effect of decreasing temperature on the feeding kinematics of the northern most labrid in the Western Atlantic. During winter, cunner (Tautogolabrus adspersus) enter a state of extended torpor in order to conserve energy when water temperatures drop below similar to 10 degrees C. We hypothesized that feeding kinematics would be slower at lower temperatures especially those associated with torpor (<= 10 degrees C). Additionally, we hypothesized that prey type will elicit different feeding behaviors. Feeding events on sandworms and Asian shore crabs were recorded at 5, 10, 15 and 20 degrees C. Fish held at 5 degrees C had slower opening and closing jaw velocities while using more ram than the other temperature treatments. No differences were detected between prey types. For both prey types, the temperature treatment which consistently induced torpor (5 degrees C) slowed oral jaw movements, which likely forced cunner to rely more on ram than suction to capture prey. Torpor temperatures appeared to have less of an effect on feeding than on metabolic rate, steady swimming capabilities and muscle function, suggesting some compensatory mechanisms of feeding musculature in cunner.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/129134
Appears in Collections:气候减缓与适应

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作者单位: 1.Citadel, Dept Biol, 171 Moultrie St, Charleston, SC 29409 USA
2.Fairfield Univ, Dept Biol, Fairfield, CT 06430 USA

Recommended Citation:
Moran, C. J.,Carlowicz, R. M.,Gerry, S. P.. A temperate labrid fish demonstrates compensatory mechanisms to feed at torpor-inducing temperatures[J]. JOURNAL OF ZOOLOGY,2019-01-01,307(2):125-130
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