我们能从亲代分配数据中识别野生鲑鱼吗?法国加隆-多尔多涅河鲑鱼恢复计划的案例研究

IF 1.5 4区 农林科学 Q3 FISHERIES Aquatic Living Resources Pub Date : 2021-01-01 DOI:10.1051/ALR/2021008
M. Vandeputte, A. Bestin, Louarn Fauchet, J. Allamellou, S. Bosc, O. Menchi, P. Haffray
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引用次数: 1

摘要

利用基因组标记进行亲子鉴定提供了一个监测鲑鱼重新放养计划的机会。大多数时候,它被用来研究这些计划中孵化场出生的鱼的命运,以及重新放养的遗传影响。在这样的分析中,只考虑分配给父母的鱼。在法国的加隆-多尔多涅河流域,本地鲑鱼已经消失了,人们正试图通过支持性繁殖来恢复一个自我维持的种群。因此,评估野生洄游鲑鱼的数量是最重要的,这可能是错误分配的,也可能是没有分配的,这取决于标记集的力量和交配计划的规模。我们使用了2008年至2014年使用的5800条孵化场亲鱼的9个微卫星的基因型,以及2008年至2016年收集的884条上游洄游鱼的基因型,以评估我们识别野生鲑鱼的能力。我们模拟了孵化场鱼和野生鱼的基因型,并评估了它们是如何通过亲代分配软件Accurassign识别的。结果表明,在记录的交配计划内分配的鱼中,98.7%的鱼可以被认为是孵化鱼,而在其他分配类别(分配到交配计划之外,分配到几个亲本对,未分配)的鱼中,93.3%的鱼可以被认为是野生鱼。使用贝叶斯方法,我们发现2014年至2016年采样的457条上游洄游鱼中有31.3%是野生出生的。因此,这种方法可以有效地识别恢复计划中的野生鱼类。这仍然取决于交配计划的记录质量,我们在这个程序中显示了相当好的记录质量(<5%的错误)。为了限制这种潜在的依赖性,现在正在实施增加标记基因分型的数量(从9个增加到17个)。
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Can we identify wild-born salmon from parentage assignment data? A case study in the Garonne-Dordogne rivers salmon restoration programme in France
Parentage assignment with genomic markers provides an opportunity to monitor salmon restocking programs. Most of the time, it is used to study the fate of hatchery-born fish in those programs, as well as the genetic impacts of restocking. In such analyses, only fish that are assigned to their parents are considered. In the Garonne-Dordogne river basin in France, native salmon have disappeared, and supportive breeding is being used to try to reinstate a self-sustained population. It is therefore of primary importance to assess the numbers of wild-born returning salmon, which could appear as wrongly assigned or not assigned, depending on the power of the marker set and on the size of the mating plan. We used the genotypes at nine microsatellites of the 5800 hatchery broodstock which were used from 2008 to 2014, and of 884 upstream migrating fish collected from 2008 to 2016, to assess our ability to identify wild-born salmon. We simulated genotypes of hatchery fish and wild-born fish and assessed how they were identified by the parentage assignment software Accurassign. We showed that 98.7% of the fish assigned within the recorded mating plan could be considered hatchery fish, while 93.3% of the fish in other assignment categories (assigned out of the mating plan, assigned to several parent pairs, not assigned) could be considered wild-born. Using a Bayesian approach, we showed that 31.3% of the 457 upstream migrating fish sampled from 2014 to 2016 were wild-born. This approach is thus efficient to identify wild-born fish in a restoration program. It remains dependent on the quality of the recording of the mating plan, which we showed was rather good (<5% mistakes) in this program. To limit this potential dependence, an increase in the number of markers genotyped (17 instead of 9) is now being implemented.
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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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