Consulta: creatorFacets:"Giannecchini,Luiz Gustavo"
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Data/hora: 09/06/2024 17:29:20

Effects of photoperiod on reproduction of Siamese fighting fish Betta splendens
Provedor de dados: 96
Autores: Giannecchini,Luiz Gustavo; Massago,Haluko; Fernandes,João Batista Kochenborger.
This study investigated the effect of different photoperiods (24 h of light (L):0 h of darkness (D); 20L:4D; 16L:8D; 12L:12D; and 8L:16D) on the reproduction and growth of Betta splendens. The results showed that spawning frequency was significantly higher in couples reared under 16L:8D and 12L:12D, in comparison with other treatments. The highest number of eggs per spawn was obtained under 16L:8D (544.76±375.23) and 12L:12D (471.13±261.52), and the lowest values were detected for 24L:0D (128.55±58.14) and 20L:4D (187.87±103.84). Fertility and fecundity also showed significantly higher average values in 16L:8D and 12L:12D when compared with 24L:0D and 20L:4D treatments. Egg volume and perivitelline space were significantly higher in 24L:0D treatments that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Fertility; Light regimen; Ornamental fish.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400001