Data/hora: 20/06/2024 18:46:32

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 17/09/2007
Data da última atualização: | 20/09/2011
Autoria: | CUNHA, N. L; CATELLA, A. C; KINAS, M. A.
Afiliação: | N. L. Cunha, UFMS; Agostinho Carlos Catella, Embrapa Pantanal; M. A. Kinas, UFMS.
Título: | Growth parameters estimates for a small fish of the Pantanal, Brazil: Moenkhausia dichroura (Characiformes; Characidae).
Ano de publicação: | 2007
Fonte/Imprenta: | Separata de: Brazilian Journalof Biology, v.67, n.2, p.293-297, 2007.
Idioma: | Inglês
Conteúdo: | Growth parameters were estimated for Moenkhausia dichroura, a small-sized and very abundant fish of the Pantanal lentic habitats commonly know as "pequira". A method based on the lenght frequencies distribuition and the ELEFAN I routine from the FISAT program were used. The fish were collected in the baia da Onça, an oxbowlake of the sub-region Pantanal of Aquidauana, Mato Grosso do Sul, Brazil, from June to December 1988. The standart lengh of the capture fishes ranged from 29 to 76mm with an average of 53 mm. The estimated growth parameters were L= 81mm (standart lenght), k= 0.85 year, C=0.89, WP=0.6 (Rn=0.285). The WP incated that growth reduction occurred in July, when the lowest temperature of the year was registrated. The growth curve showed that captured individuals belonged to three cohorts. The obtained results seem robust and quite compatible with the biology of the fish and its adjustment to the environment. M. dichroura, in spite of not being a direct fishing interest, is an important species in terms of its ecological aspects, due to its abundance and high growth rate, and as great food source for aquatic organisms and specially for larger fish of economic value. Considering the information gap about small fish, the parameters estimated for pequira constitue a comparison base for other growth studies of small-sized fish species of tropical enviroments.
Palavras-Chave: | Aquidauana River; ELEFAN; Pequira; Tetragonopterinae.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (55772-1) - UPC - SP - -- - SP16748 -  - 16748 - DIS