The influence of sex ratio on the reproduction of pirarucu, Arapaima gigas, in captivity.
Because sex ratio in the broodstock can influence the reproductive behaviour of a species, the influence of sex ratio on the reproductive success of pirarucu, Arapaima gigas, in captivity was assessed. Pirarucu breeders were stocked in 0.10-0.13 ha earthen ponds at three sex ratios in quadruplicate: one male to one female (1M1F); one male to two females (1M2F); and two males to one female (2M1F). Eight spawning events occurred, seven of them with the 1M1F sex ratio, which was the most successful of the three tested sex ratios.
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| Format: | Artigo de periódico biblioteca |
| Language: | English eng |
| Published: |
2018-01-22
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| Subjects: | Breeding pairs., Peixe de água doce, Pirarucu, Reprodutor, Acasalamento., Mating behavior, Tropical fish, Arapaima gigas., |
| Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1086005 |
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