Tsaparis Dimitrios, Lecocq Thomas, Kyriakis Dimitrios, Oikonomaki Katerina, Fontaine Pascal, Tsigenopoulos Costas S
Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (HCMR), 71003 Heraklion, Greece.
Faculty of Sciences and Technologies, University of Lorraine, INRAE, URAFPA, F-54000 Nancy, France.
Animals (Basel). 2022 May 4;12(9):1178. doi: 10.3390/ani12091178.
The pikeperch is a freshwater/brackish water fish species with growing interest for European aquaculture. Wild populations show signs of decline in many areas of the species natural range due to human activities. The comparative evaluation of genetic status in wild and domesticated populations is extremely useful for the future establishment of genetic breeding programs. The main objective of the present study was to assess and compare the genetic variability of 13 domesticated populations from commercial farms and 8 wild populations, developing an efficient microsatellite multiplex tool for genotyping. Partial cytochrome gene sequences were also used to infer phylogeographic relationships. Results show that on average, the domesticated populations do not exhibit significantly lower levels of genetic diversity compared to the wild ones and do not suffer from inbreeding. Nuclear data provide evidence that pikeperch populations in Europe belong to at least two genetically differentiated groups: the first one is predominantly present in Northern Europe and around the Baltic Sea, while the second one comprises populations from Central Europe. In this second group, Hungarian origin populations constitute a differentiated stock that needs special consideration. Aquaculture broodstocks analyzed appear to contain fish of a single origin with only a few exceptions.
梭鲈是一种淡水/咸淡水鱼类，在欧洲水产养殖中越来越受关注。由于人类活动，该物种自然分布范围内的许多地区野生种群出现了衰退迹象。对野生和驯化种群的遗传状况进行比较评估，对未来建立遗传育种计划极为有用。本研究的主要目的是评估和比较来自商业养殖场的13个驯化种群和8个野生种群的遗传变异性，开发一种用于基因分型的高效微卫星多重工具。部分细胞色素基因序列也用于推断系统发育关系。结果表明，平均而言，驯化种群的遗传多样性水平与野生种群相比并没有显著降低，也没有遭受近亲繁殖。核数据提供的证据表明，欧洲的梭鲈种群至少属于两个遗传分化的群体：第一个群体主要分布在北欧和波罗的海周边，而第二个群体包括来自中欧的种群。在第二个群体中，匈牙利原产的种群构成了一个需要特别考虑的分化种群。分析的水产养殖亲鱼似乎只包含少数例外的单一来源的鱼类。
