Abstract
The Amazonian symbol fish Arapaima gigas is the only living representative of the Arapamidae family. Environmental pressures and illegal fishing threaten the species’ survival. To protect wild populations, a national regulation must be developed for the management of A. gigas throughout the Amazon basin. Moreover, the reproductive genetic management and recruitment of additional founders by aquaculture farms are needed to mitigate the damage caused by domestication. To contribute to the sustainable development, we investigated the genetic diversity of wild and cultivated populations of A. gigas and developed a panel composed by 12 microsatellite markers for individual and population genetic tracing. We analyzed 368 samples from three wild and four farmed populations. The results revealed low rates of genetic diversity in all populations, loss of genetic diversity and high inbreeding rates in farmed populations, and genetic structuring among wild and farmed populations. Genetic tracing using the 12 microsatellite markers was effective, and presented a better performance in identifying samples at the population level. The 12-microsatellite panel is appliable to the legal aspects of the trade of the A. gigas, such as origin discrimination, reproductive genetic management by DNA profiling, and evaluation and monitoring of genetic diversity.
Subject
Genetics (clinical),Genetics
Reference49 articles.
1. Potencial de criação de Pirarucu, Arapaima gigas,em cativeiro
2. O Gigante Amazônico: Manejo Sustentável de Pirarucu = The Amazing Giant: Sustainable Management of Arapaima (Pirarucu);Gonçalves,2018
3. ABP—Anuário Brasileiro da Piscicultura PEIXE BR 2020
https://www.peixebr.com.br/anuario-2020/
4. Uso de sal durante o transporte de juvenis (1kg) de pirarucu (Arapaima gigas)
5. Fisheries & Aquaculture: Cultured Aquatic Species Information Programme—Arapaima Gigas (Schinz, 1822)
http://www.fao.org/fishery/culturedspecies/Arapaima_gigas/en
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