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Condition factor dependency of burst swimming ability between wild and hatchery-reared chum salmon fry (Oncorhynchus keta)
Ichthyological Research ( IF 1.2 ) Pub Date : 2021-09-15 , DOI: 10.1007/s10228-021-00838-x
Shigenori Nobata 1 , Susumu Hyodo 1 , Shouji Houki 2 , Takashi Kitagawa 2
Affiliation  

Burst swimming velocity (Uburst) was compared between wild and hatchery-reared chum salmon fry. In the hatchery-reared fry, Uburst was significantly correlated with the condition factor, but not with the body mass and fork length. In the wild-reared fry, on the other hand, Uburst ranged widely and did not correlate with condition factor. These suggest that well-balanced growth under satisfactory nutrient condition at the early developmental stage improves Uburst, and in the wild-reared fry, their cautiousness and various experiences may override the condition factor dependency of Uburst.



中文翻译:

野生和孵化场养殖的鲑鱼苗(Oncorhynchus keta)之间爆发游泳能力的条件因素依赖性

比较了野生和孵化场养殖的鲑鱼鱼苗的爆发游泳速度(U爆发)。在孵化场饲养的鱼苗中,U爆裂与条件因素显着相关,但与体重和叉长无关。另一方面,在野生饲养的鱼苗中,U爆裂范围很广,与条件因素无关。这表明发育早期在令人满意的营养条件下的均衡生长提高了U,而在野生饲养的鱼苗中,他们的谨慎和各种经验可能会超过U的条件因素依赖性。

更新日期:2021-09-16
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