Welfare Considerations of Triploid Fish
Welfare Considerations of Triploid Fish
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DOI：
10.1080/10641262.2012.704598
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发表时间：
2012-01-01
影响因子：
--
通讯作者：
Mayer, Ian
中科院分区：
文献类型：
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作者：
Fraser, Thomas W. K.;Fjelldal, Per Gunnar;Mayer, Ian
水产品生产继续增加，以满足全球需求，因此，与其环境可持续性和鱼类福利有关的问题在社会中变得更加突出。不育的三倍体鱼（具有一个额外的染色体设置为更自然的二倍体状态）在水产养殖和渔业管理中使用，以避免与不必要的早期性成熟和野生鱼和养殖鱼之间的遗传相互作用相关的问题。三倍体鱼类在生理和行为上与二倍体鱼类相似，但倍性效应确实存在。本文综述了水产养殖和渔业管理中三倍体鱼类的福利。主要结论是，三倍体似乎更容易受到温度胁迫，有更高的畸形发生率，比二倍体的侵略性。然而，相当大的知识差距存在于三倍体的生理和性能，因此，三倍体的水质，营养需求，放养密度和屠宰方法的要求不能充分评估。此外，除了生长和存活之外，没有关于三倍体鱼在释放到自然环境中时的表现的资料，这是一个相当令人关切的问题，因为三倍体鱼通常用于捕捞和释放渔业。随着今天对动物福利的日益重视，这些问题变得更加紧迫。
Aquaculture production continues to increase to satisfy global demand, and as such, issues relating to its environmental sustainability and the welfare of fish are becoming more prominent within society. Sterile triploid fish (possessing one additional chromosome set to the more natural diploid state) are in use in aquaculture and fisheries management to avoid the problems associated with unwanted early sexual maturation and genetic interactions between wild and cultured fish. Triploids are physiologically and behaviorally similar to diploids, although ploidy effects do exist.This review focuses on the welfare of triploid fish within aquaculture and fisheries management. The main conclusions are that triploids appear more susceptible to temperature stress, have a higher incidence of deformities, and are less aggressive than their diploid counterparts. However, considerable knowledge gaps exist in triploid physiology and performance; therefore, triploid requirements for water quality, nutritional requirements, stocking densities, and slaughter methods cannot be fully assessed. In addition, other than growth and survival, no information exists on the performance of triploids when released into natural environments, and this is of considerable concern, as triploids are commonly used in catch-and-release fisheries. These matters become more pressing with today's increased emphasis on animal welfare.