title: Capture, adaptation and artificial control of reproduction of Lophiosilurus alexandri: A carnivorous freshwater species.
abstract: The present study describes the capture adaptation and reproduction of wild Lophiosilurus alexandri broodstock in laboratory conditions. There were two periods when capturing was performed in natural habitats. The animals were placed in four tanks of 5m(3) with water temperatures at 28°C with two tanks having sand bottoms. Thirty days after the temperature increased (during the winter) the first spawning occurred naturally, but only in tanks with sand on the bottom. During the breeding season, there were 24 spawning bouts with egg mass collections occurring as a result of the spawning bouts that occurred in the tanks. The hatching rates for eggs varied from 0% to 95%. The spawning bouts were mainly at night and on weekends. In the second reproductive period, the animals were sexed by cannulation and distributed in four tanks with all animals being maintained in tanks with sand on the bottom at 28°C. During this phase, there were 36 spawning bouts. Findings in the present study contribute to the understanding of the reproductive biology of this endangered species during captivity.
authors.affiliation: Laboratório de Aquacultura da Escola de Veterinária da Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627 Belo Horizonte, MG, Brazil.
authors.forename: Deliane Cristina
authors.initials: DC
authors.lastname: Costa
authors.affiliation: Laboratório de Aquacultura da Escola de Veterinária da Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627 Belo Horizonte, MG, Brazil.
authors.forename: Walisson
authors.initials: W
authors.lastname: de Souza e Silva
authors.affiliation: Laboratório de Aquacultura da Escola de Veterinária da Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627 Belo Horizonte, MG, Brazil.
authors.forename: Reinaldo
authors.initials: R
authors.lastname: Melillo Filho
authors.affiliation: Laboratório de Aquacultura da Escola de Veterinária da Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627 Belo Horizonte, MG, Brazil.
authors.forename: Kleber Campos
authors.initials: KC
authors.lastname: Miranda Filho
authors.affiliation: Centro Integrado de Recursos Pesqueiros e Aquicultura de Três Marias - CODEVASF, Caixa Postal 11, Três Marias, MG, Brazil.
authors.forename: José Claudio
authors.initials: JC
authors.lastname: Epaminondas dos Santos
authors.affiliation: Laboratório de Aquacultura da Escola de Veterinária da Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627 Belo Horizonte, MG, Brazil. Electronic address: luzrk@yahoo.com.
authors.forename: Ronald
authors.initials: R
authors.lastname: Kennedy Luz
mesh_terms: D000822:Animal Husbandry / Q000379:methods; D000818:Animals; D002397:Catfishes / Q000502:physiology*; D005260:Female; D005398:Fisheries / Q000379:methods*; D008297:Male; D012098:Reproduction / Q000502:physiology*
keywords: Breeding; Captivity; Conservation; Lophiosilurus alexandri; Parental care; Transport