Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados BJMBR (2) Autor Duarte,C.R.A. (2) Luchiari,A.C. (2) Volpato,G.L. (2) Barreto,R.E. (1) Ramanzini,G.C. (1) Palavra-chave Fish (2) Oreochromis niloticus (2) Aggression (1) Environmental color (1) Eye color (1) Nile tilapia (1) Reproduction (1) Social hierarchy (1) Social stress (1) Mais... Tipo do documento Info:eu-repo/semantics/other (2) Ano 2004 (1) 2003 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Eye color as an indicator of social rank in the fish Nile tilapia BJMBR Volpato,G.L.; Luchiari,A.C.; Duarte,C.R.A.; Barreto,R.E.; Ramanzini,G.C.. We investigated the association of eye color with the dominant-subordinate relationship in the fish Nile tilapia, Oreochromis niloticus. Eye color pattern was also examined in relation to the intensity of attacks. We paired 20 size-matched fish (intruder: 73.69 ± 11.49 g; resident: 75.42 ± 8.83 g) and evaluated eye color and fights. These fish were isolated in individual aquaria for 10 days and then their eye color was measured 5 min before pairing (basal values). Twenty minutes after pairing, eye color and fights were quantified for 10 min. Clear establishment of social hierarchy was observed in 7 of 10 pairs of fish. Number of attacks ranged from 1 to 168 among pairs. The quartile was calculated for these data and the pairs were then divided into two... Tipo: Info:eu-repo/semantics/other Palavras-chave: Aggression; Eye color; Social hierarchy; Social stress; Fish; Oreochromis niloticus. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003001200007 Environmental color affects Nile tilapia reproduction BJMBR Volpato,G.L.; Duarte,C.R.A.; Luchiari,A.C.. We investigated the effects of environmental color on the reproductive behavior of Nile tilapia, Oreochromis niloticus. Two environmental colors were tested by covering the aquarium (60 x 60 x 40 cm) with white (12 groups) or blue (13 groups) cellophane and observing reproductive behavior in groups of 2 males (10.27 ± 0.45 cm) and 3 females (10.78 ± 0.45 cm) each. After assignment to the respective environmental color (similar luminosity = 100 to 120 Lux), the animals were observed until reproduction (identified by eggs in the female's mouth) or up to 10 days after the first nest building. Photoperiod was from 6:00 h to 18:00 h every day. Food was offered in excess once a day and water quality was similar among aquaria. Daily observations were made at... Tipo: Info:eu-repo/semantics/other Palavras-chave: Reproduction; Environmental color; Fish; Nile tilapia; Oreochromis niloticus. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000400004 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco