Atlantic salmon show capability for cardiac acclimation to warm temperatures

被引:99
作者
Anttila, Katja [1 ]
Couturier, Christine S. [2 ]
Overli, Oyvind [3 ]
Johnsen, Arild [4 ]
Marthinsen, Gunnhild [4 ]
Nilsson, Goran E. [2 ]
Farrell, Anthony P. [5 ,6 ]
机构
[1] Univ Turku, Dept Biol, Physiol Anim Lab, FI-20014 Turku, Finland
[2] Univ Oslo, Dept Biosci, Sect Physiol & Cell Biol, N-0316 Oslo, Norway
[3] Norwegian Univ Life Sci, Dept Anim & Aquacultural Sci, N-1432 As, Norway
[4] Univ Oslo, Nat Hist Museum, NO-0318 Oslo, Norway
[5] Univ British Columbia, Dept Zool, Vancouver, BC V6T 1Z4, Canada
[6] Univ British Columbia, Fac Land & Food Syst, Vancouver, BC V6T 1Z4, Canada
来源
NATURE COMMUNICATIONS | 2014年 / 5卷
基金
加拿大自然科学与工程研究理事会; 芬兰科学院;
关键词
THERMAL TOLERANCE; CLIMATE-CHANGE; RAINBOW-TROUT; HEART-RATE; INTRASPECIFIC VARIATION; POPULATION-STRUCTURE; SALAR; ONCORHYNCHUS; ADAPTATION; FISHES;
D O I
10.1038/ncomms5252
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Increases in environmental temperature predicted to result from global warming have direct effects on performance of ectotherms. Moreover, cardiac function has been observed to limit the tolerance to high temperatures. Here we show that two wild populations of Atlantic salmon originating from northern and southern extremes of its European distribution have strikingly similar cardiac responses to acute warming when acclimated to common temperatures, despite different local environments. Although cardiac collapse starts at 21-23 degrees C with a maximum heart rate of similar to 150 beats per min (bpm) for 12 degrees C-acclimated fish, acclimation to 20 degrees C considerably raises this temperature (27.5 degrees C) and maximum heart rate (similar to 200 bpm). Only minor population differences exist and these are consistent with the warmer habitat of the southern population. We demonstrate that the considerable cardiac plasticity discovered for Atlantic salmon is largely independent of natural habitat, and we propose that observed cardiac plasticity may aid salmon to cope with global warming.
引用
收藏
页数:6
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