Monosex male production in finfish as exemplified by tilapia: applications, problems, and prospects
Monosex male production in finfish as exemplified by tilapia: applications, problems, and prospects
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DOI：
10.1016/s0044-8486(01)00590-7
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发表时间：
2001-06-01
期刊：
影响因子：
4.5
通讯作者：
Lewis, RI
中科院分区：
文献类型：
--
作者：
Beardmore, JA;Mair, GC;Lewis, RI
在一系列水产养殖生产系统中的各种鱼种中，使用单性鱼类在本质上是可取的。利用它们寻求的潜在优势可能包括以下一个或多个特征：实现更高的平均增长率，消除繁殖，减少性/领土行为，减少捕捞规模的变化，以及减少外来物种逃逸造成的环境影响风险。鱼类作为一个群体，其性别决定系统具有相当大的生物学意义和进化生物学研究的意义。然而，它们是非常可变的，相对了解较少，并导致物种之间和物种内的性别比例的很大差异。然而，已知的足够多的知识使我们能够说，这些系统经常被用来将鱼类与哺乳动物、鸟类和爬行动物等群体明显区分开来。因此，设计生产单性群体的性别表型操作并不直接，结果也不一定是可预测的。本文回顾了单性雄性的生产技术，并详细考虑了YY/GMT技术在尼罗罗非鱼中的情况，这是迄今为止水产养殖业广泛采用的唯一用于生产单性雄性的基因技术的例子。文中描述了使用GMT带来的可观效益。试图预测这一水产养殖领域的未来发展。(C)2001 Elsevier Science B.V.保留所有权利。
The use of monosex fish is intrinsically desirable in a variety of fish species in a range of aquaculture production systems. The potential advantages sought from their use may include one or more of the following features: achievement of higher average growth rate, elimination of reproduction, reduction of sexual/territorial behaviour, reduction of variation in harvest size, and reduction of risk of environmental impact resulting from escapes of exotic species.Fish as a group have systems of sex determination which are of considerable biological interest and significance for studies in evolutionary biology. However, they are very variable, relatively poorly understood and give rise to much variation in sex ratio between, and within, species. Enough is known, however, to enable us to say that these systems are often employed in ways which sharply distinguish the fishes from groups such as mammals, birds and reptiles. As a consequence, manipulations of sexual phenotype designed to produce monosex populations are not straightforward and the results are not necessarily predictable.This paper reviews the techniques for production of monosex males, and considers in detail the case of the YY/GMT technology in the Nile tilapia, which is the only example of a genetic technology for the production of monosex males so far widely adopted by the aquaculture industry. The considerable benefits accruing from the use of GMT are described. An attempt at projecting future developments in this area of aquaculture is made. (C) 2001 Elsevier Science B.V. All rights reserved.