<b>Genetic monitoring by rapd markers for repopulation programs of <i>Salminus brasiliensis</i> (Pisces, Characiformes)</b> - doi: 10.4025/actascianimsci.v35i2.15904
Resumo
The preservation of the genetic variability of hatchery stocks used to supplement naturalpopulations is a priority. Current study employed RAPD markers to examine the genetic diversity of dourado
samples from the middle Paranapanema river and from the broodstock used in the stock enhancement program
of the Aquaculture and Hydrobiology Station at the Salto Grande Hydroelectric Power Plant. Nineteen RAPD
primers were analyzed, which generated 299 bands and the latter were used for genetic analysis. The percentage
of polymorphic fragments was higher in stock captured in the Paranapanema river than from fry stocks. The
genetic diversity was lower in the broodstock than in natural population. Amova results showed that most interpopulation
genetic variation lay within stocks (83.9%) and not between them (16.1%). Moderate genetic
differentiation (FST = 0.16) was reported. Nevertheless, differentiation decreased when the four fry stocks were
mixed and analyzed as a single population (FST = 0.07). Instead of releasing each lot separately into the water,
mixing specimens produced in the various fry stocks before releasing them in the river would be more feasible.
The restocked population will have a genetic structure closer to natural populations.
Downloads
DECLARAÇÃO DE ORIGINALIDADE E DIREITOS AUTORAIS
Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade.
Os direitos autorais pertencem exclusivamente aos autores. Os direitos de licenciamento utilizados pelo periódico é a licença Creative Commons Attribution 4.0 (CC BY 4.0): são permitidos o compartilhamento (cópia e distribuição do material em qualqer meio ou formato) e adaptação (remix, transformação e criação de material a partir do conteúdo assim licenciado para quaisquer fins, inclusive comerciais.
Recomenda-se a leitura desse link para maiores informações sobre o tema: fornecimento de créditos e referências de forma correta, entre outros detalhes cruciais para uso adequado do material licenciado.
