High Water Temperature Influences on Foraging Responses and Thermal Deaths of Dolly Varden Salvelinus malma and White-spotted Charr S. leucomaenis in a Laboratory
High Water Temperature Influences on Foraging Responses and Thermal Deaths of Dolly Varden Salvelinus malma and White-spotted Charr S. leucomaenis in a Laboratory
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实验室高水温对 Dolly Varden Salvelinus malma 和白斑 Charr S. leucomaenis 觅食反应和热死亡的影响
DOI：
10.2331/fishsci.63.6
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发表时间：
1997
影响因子：
1.9
通讯作者：
S. Nakano
中科院分区：
文献类型：
--
作者：
T. Takami;Fumiaki Kitano;S. Nakano
在水族箱中研究了水温对两种同属红点鲑（Dolly Varden Salvelinus malma 和白斑红点鲑 S. leucomaenis）的觅食反应和耐热性的影响。食欲下降？ 16•Ž 为多莉·瓦尔登，在？ 24•Ž 用于白点红点鲑。多莉·瓦尔登 (Dolly Varden) 和 ? 26•Ž 为白点红点鲑。多莉·瓦尔登的优选温度范围上限和致死温度显着低于白斑红点鲑。温度偏好和耐热性可能在这两个物种的分布中发挥着重要作用。
Water temperature effects on foraging responses and thermal tolerances of two congeneric charrs, Dolly Varden Salvelinus malma and white-spotted charr S. leucomaenis, were examined in aquarium settings. Appetites decreased at ? 16•Ž for Dolly Varden and at ? 24•Ž for white-spotted charr. The lethal temperatures were ?20•Ž for Dolly Varden and ? 26•Ž for white-spotted charr. The upper limits of preferred temperature ranges and the lethal temperatures for Dolly Varden were significantly lower than those of white-spotted charr. Temperature preference and thermal tolerance probably play a major role in the distribution of these two species.