Nurture is above nature: nursery experience determines habitat preference of red sea bream Pagrus major juvenil
Nurture is above nature: nursery experience determines habitat preference of red sea bream Pagrus major juvenil
复制标题
教养高于自然：育苗经验决定真鲷幼鱼的栖息地偏好
DOI：
10.1007/s10164-019-00605-6
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发表时间：
2019
影响因子：
0.9
通讯作者：
Reiji Masuda
中科院分区：
文献类型：
--
作者：
Kohji Takahashi;Reiji Masuda
栖息地偏好被认为是鱼类的遗传程序。然而，鱼类可以根据他们对环境的个人经验来选择栖息地。我们调查了养殖环境是否会影响真鲷幼鱼的栖息地偏好，并测试了所形成的偏好是否会持续到生命的后期阶段。幼鱼在以沙子或人造海藻为基质的水箱中饲养40天。天真的鱼提出没有任何类型的基板。在偏好测试中，个体鱼被允许选择沙子或人工海藻微栖息地。然后将测试的鱼保持在贫瘠的水箱中，并在第30天和第100天再次进行类似的测试。沙和海藻处理的鱼喜欢相应的栖息地饲养处理后立即，而幼稚的鱼没有表现出任何偏好。当在第30天测试鱼时，这些偏好得以维持，但在第100天则没有。本研究表明，栖息地的偏好是通过饲养环境在托儿所阶段，并持续至少30天。栖息地偏好的形成有助于幼鱼在波动的环境中选择最佳的小生境。
Habitat preference is thought to be genetically programmed in fishes. However, fishes can choose habitat based on their personal experience of an environment. We investigated whether the environment in which fish are raised affects habitat preference in red sea breamPagrus majorjuveniles, and tested if the formed preference lasts until later life stages. Juveniles were reared in tanks with a substrate of either sand or artificial seaweed for 40 days. Naive fish were raised without either type of substrate. In the preference test, individual fish were allowed to choose either a sand or artificial seaweed microhabitat. The tested fish were then kept in barren tanks, and similar tests conducted again on days 30 and 100. Sand and seaweed treatment fish preferred the corresponding habitat immediately after the rearing treatment, whereas naive fish did not exhibit any preference. These preferences were maintained when fish were tested on day 30, but not on day 100. The present study suggests that habitat preference is acquired through the rearing environment at the nursery stage, and that this preference lasts for at least 30 days. The formation of habitat preference should help juveniles to choose an optimal microhabitat in a fluctuating environment.