Data/hora: 10/06/2024 05:31:26

Provedor de dados: | 36
País: | Brazil
Título: | Couple formation and spawning between two female Discus Fish (Symphysodon aequifasciatus - Cichlidae) in captivity
Autores: | MATTOS,Douglas da Cruz; SCRENCI-RIBEIRO,Rafaela; CARDOSO,Leonardo Demier; JUNIOR,Manuel Vazquez Vidal.
Data: | 2017-06-01
Ano: | 2017
Palavras-chave: | Reproduction; Behavior; Aquaculture; Amazonian fish.
Resumo: | ABSTRACT In an experiment performed to characterize the reproductive behavior of the discus fish in captivity, couple formation with two females was observed. The observations were carried out in captivity, based on ad libitum methodology. Adult individuals were allowed to naturally form couples. The couple formation was considered when individuals performed the substrate cleaning behavior. Fifteen couples were selected. The eggs of three couples did not initiate embryonic development and became infeasible within three days after spawning. We found that these spawnings belonged to all-female couples. The sex of the individuals in same-sex couples was confirmed through subsequent couple formation and spawning of fertile eggs with known males. Eggs were deposited by one or both females in the same-sex couples. Double spawnings were larger and differentially colored. The motivations that lead individuals of the same sex to form couples in this species are still unknown.
Tipo: | Info:eu-repo/semantics/report
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200167
Editor: | Instituto Nacional de Pesquisas da Amazônia
Relação: | 10.1590/1809-4392201601974
Formato: | text/html
Fonte: | Acta Amazonica  v.47 n.2 2017
Fonte: | info:eu-repo/semantics/openAccess