Estrutura populacional de Pomadasys corvinaeformis (Steindachner) (Teleostei, Haemulidae) na Baía de Guaratuba, Paraná, BrasilReproductive and biometrical analyses were pertormed on 1629 individuals of P. corvinaeformis collected monthly from October 1993 to September 1996, at Guaratuba Bay, Southern Brazilian coast. The results indicate that the species is more abundant in the mangrove area during winter, when the largest individuais were collected, and spring, when the water temperature is lower and the salinity higher than summer or autumn. The relationship of body weight to body length, for grouped sexes, is "lnTW= -12,0456 + 3,1831 lnTL". The monthly Condition Factor is highest during summer and lowest during winter. It is suggested that P. corvinaeformis is present in the mangrove area during a specific etape of its life cycle and does not use this area to maturation and spawn.
Pomadasys corvinaeformis; fishes; mangrove; Guaratuba Bay; Brazil
Pomadasys corvinaeformis; fishes; mangrove; Guaratuba Bay; Brazil
Pomadasys corvinaeformis; fishes; mangrove; Guaratuba Bay; Brazil
Estrutura populacional de Pomadasys corvinaeformis (Steindachner) (Teleostei, Haemulidae) na Baía de Guaratuba, Paraná, Brasil1
Populacional structure of Pomadasys corvinaeformis (Steindachner) (Teleostei, Haemulidae) at Guaratuba Bay, Paraná, Brazil
Paulo de Tarso da Cunha Chaves
Departamento de Zoologia, Universidade Federal do Paraná. Caixa Postal 19020, 81531-990 Curitiba, Paraná, Brasil. Bolsista do CNPq
ABSTRACT
Reproductive and biometrical analyses were pertormed on 1629 individuals of P. corvinaeformis collected monthly from October 1993 to September 1996, at Guaratuba Bay, Southern Brazilian coast. The results indicate that the species is more abundant in the mangrove area during winter, when the largest individuais were collected, and spring, when the water temperature is lower and the salinity higher than summer or autumn. The relationship of body weight to body length, for grouped sexes, is "lnTW= -12,0456 + 3,1831 lnTL". The monthly Condition Factor is highest during summer and lowest during winter. It is suggested that P. corvinaeformis is present in the mangrove area during a specific etape of its life cycle and does not use this area to maturation and spawn.
Key words:Pomadasys corvinaeformis, fishes, mangrove, Guaratuba Bay, Brazil
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AGRADECIMENTOS. À bióloga Ana Lúcia Vendel, por seu auxílio nos trabalhos de campo e de laboratório, e a dois Revisores anônimos, pela análise do texto e recomendações efetuadas.
Recebido em 26.IX.1996; aceito em 13.IV.1998.
Referências bibliográficas
- Chaves, P.T.C. 1994. A incubação de ovos e larvas em Genidens genidens (Valenciennes) (Siluriformes, Ariidae) da Baia de Guaratuba, Paraná, Brasil. Revta bras. Zool. 11 (4):641-648.
- ______. 1995. Atividade reprodutiva de Bairdiella ronchus (Cuvier) (Pisces, Sciaenidae) na Baia de Guaratuba, Paraná, Brasil. Revta bras. Zool. 12 (4):759-766.
- Chaves, P.T.C. & A.L. Vendel. 1997a. Indicadores reprodutivos das espécies de Citharichthys Bleeker (Teleostei, Pleuronectiformes) na Baia de Guaratuba, Paraná, Brasil. Revta bras. Zool. 13 (3):669-675.
- ______. 1997b. Reprodução de Stellifer rastrifer (Jordan) (Teleostei, Sciaenidae) na Baia de Guaratuba, Paraná, Brasil. Revta bras. Zool. 14 (1):81-89.
- Costa, P.S.R.; M.A.M. Santos; M.F.A. Espínola & C. Monteiro-Neto. 1995. Biologia e biometria do coró, Pomadasys corvinaeformis (Steindachner) (Teleostei: Pomadasyidae), em Fortaleza, Ceará, Brasil. Arq. Ciên. Mar, Fortaleza, 29 (1-2):20-27.
- Menezes, N.A. & J.L. Figueiredo. 1980. Manual de Peixes Marinhos do Sudeste do Brasil. IV. Teleostei (3). São Paulo, Museu de Zoologia, Universidade de São Paulo, 96p.
- Vazzoler, A.E.A. de M. 1996. Biologia da Reprodução de Peixes Teleósteos: Teoria e Prática. Maringá, EDUEM/SBI, 169p.
