保安湖四种小型鱼类脑指数初步研究
PRIMARY STUDY ON THE BRAIN INDEX OF FOUR SMALL FISHES IN LAKE BAO’AN
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摘要: 脑的大小与动物在生态系统中所承受的生存压力相关,如在陆地生态系统中猎物和捕食者的脑重均随着进化过程不断增加,但每一次突变时,捕食者的脑指数总是比猎物的高。与温血脊椎动物相比,大多数鱼类的脑显得较小。但是,鱼类的脑已经进化到它们生存所需的大小,在不同生态龛里的不同种类的鱼,脑的大小不一样。
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Keywords:
- Brain index /
- Small fishes /
- Lake Bao’an
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