三峡库区中国重要养殖淡水虾--日本鲭的遗传结构

IF 1.5 4区 农林科学 Q3 FISHERIES
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引用次数: 0

摘要

日本鲭是中国淡水对虾的主要养殖品种,其遗传多样性在水产养殖中具有很高的价值。三峡工程的建设使三峡水库的水流速度减慢,水质变得更加清澈,更有利于尼泊对虾的生存和繁殖。然而,目前还缺乏对三峡库区海马种群遗传多样性的研究。本研究以线粒体COI基因序列为分子标记,分析了台儿庄区8个裸冠菊种群的遗传多样性、遗传分化和历史人口分布。结果表明,德黑兰原植物园中的新马尾藻种群具有较高的遗传多样性。位于热带植物园下游的四个种群与位于热带植物园上游的四个种群之间存在一定的遗传分化。我们还发现,滇西北草鱼种群之间的遗传距离与地理距离之间存在显著的相关性。近年来,西太平洋狩猎保留地中的日本蛙种群数量有所减少,这可能与小冰河时期的冰期运动和人类活动有关。本研究为合理开发和保护东伯利亚大草原的海马资源提供了理论依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Genetic structure of Macrobrachium nipponense, an important farmed freshwater shrimp in China, in the Three Gorges Reservoir

Macrobrachium nipponense is a major farmed species freshwater shrimp in China and its genetic diversity is of high value in aquaculture. The construction of the Three Gorges Project has slowed down the water velocity in the Three Gorges Reservoir (TGR) and made the water more clear, which is more favourable for the survival and reproduction of M. nipponense. However, there are lack of studies on the genetic diversity of M. nipponense populations in the TGR. In this study, mitochondrial COI gene sequences were used as molecular marker to analyze the genetic diversity, genetic differentiation and historical demography of eight M. nipponense populations in the TGR. The results showed that the M. nipponense populations in TGR have high genetic diversity. There was some genetic differentiation between the four populations in lower reaches of the TGR and four populations in the upper reaches of the TGR. We also found that there was a significant correlation between genetic distance and geographical distance among the M. nipponense populations in the TGR. The M. nipponense population in the TGR has experienced population reduction in the recent year, which might be related to the ice age movement in the Little Ice Age and human activities. This study provides a theoretical basis for the rational development and protection of M. nipponense resources in the TGR.

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来源期刊
Aquatic Living Resources
Aquatic Living Resources 农林科学-海洋与淡水生物学
CiteScore
2.30
自引率
0.00%
发文量
10
审稿时长
>24 weeks
期刊介绍: Aquatic Living Resources publishes original research papers, review articles and propective notes dealing with all exploited (i.e. fished or farmed) living resources in marine, brackish and freshwater environments. Priority is given to ecosystem-based approaches to the study of fishery and aquaculture social-ecological systems, including biological, ecological, economic and social dimensions. Research on the development of interdisciplinary methods and tools which can usefully support the design, implementation and evaluation of alternative management strategies for fisheries and/or aquaculture systems at different scales is particularly welcome by the journal. This includes the exploration of scenarios and strategies for the conservation of aquatic biodiversity and research relating to the development of integrated assessment approaches aimed at ensuring sustainable and high quality uses of aquatic living resources.
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