Population genetic evidence for a unique resource of Nile tilapia in Lake Tanganyika, East Africa

Population genetic evidence for a unique resource of Nile tilapia in Lake Tanganyika, East Africa
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东非坦噶尼喀湖尼罗罗非鱼独特资源的种群遗传证据

DOI:
10.1007/s10641-019-00895-2
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发表时间:
2019
影响因子:
1.4
通讯作者:
Shechonge A
Shechonge A
中科院分区:
环境科学与生态学3区
文献类型:
--
作者:
Shechonge A

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尼罗罗非鱼(Oreochromis Niloticus)是坦桑尼亚内陆渔业和水产养殖的重要物种之一。虽然它原产于该国,但只自然地分布在坦噶尼喀湖边缘和周边水体内。在美国其他地区的广泛分布是从20世纪50年代开始引入的结果。我们利用核微卫星标记研究了坦桑尼亚境内尼罗罗非鱼种群的遗传结构,并利用几何形态计量学分析比较了种群的头部和身体形态。我们发现坦噶尼喀湖种群在遗传上与引进的种群截然不同。然而,坦噶尼喀湖种群在头部和身体形状上并没有明显的形态差异来区别于其他种群。我们认为,坦噶尼喀湖尼罗罗非鱼种群是我国独一无二的遗传资源。我们建议坦噶尼喀湖流域内的尼罗罗非鱼养殖应限于本地品种。
Nile tilapia (Oreochromis niloticus) is one of the most important species in Tanzania for inland fisheries and aquaculture. Although indigenous to the country, it is only naturally distributed within the margins of Lake Tanganyika and peripheral water bodies. The widespread distribution across other parts of the country is a consequence of introductions that started in the 1950s. We investigated the population genetic structure of Nile tilapia across Tanzania using nuclear microsatellite markers, and compared the head and body morphology of populations using geometric morphometric analyses. We found the Lake Tanganyika population to be genetically distinct from the introduced populations. However, there were no clear morphological differences in head and body shape that distinguished the Lake Tanganyika population from the others. We conclude that the Lake Tanganyika population of Nile tilapia represents a unique genetic resource within the country. We suggest that Nile tilapia aquaculture within the Lake Tanganyika catchment should be restricted to the indigenous strain.
DOI: --
发表时间: 2000-05
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影响因子: 3.3
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发表时间: 1945
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发表时间: 1997
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作者:
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