Abstract
In this paper, female Macrobrachium carcinus (Linnaeus, 1758) maturation curve, weight/length relationship, length and weight growth curves were studied. Prawns were captured, by traps, in Ribeira de Iguape river (24ºS and 47ºW), southern Brazil. There were used 207 females. It was observed that M. carcinus presents several spawnings during its life cycle and reproductive period goes on, at least till six years old. Weight/length relationship can be represented for the equation W = 8.73 E-3 L3.28. Expressions obtained for length and weight growth curves are Lt = 21 .0 (1-e-0493t) and Wt= 190 (1-e-0493t)3.28. respectively. A symptotic maximum length and asymptotic maximum weight are nearly attained at six and eight years old, respectively.
Crustacea; Macrobrachium; maturation; growth; prawn
Maturation and growth curves of Macrobrachium Carcinus (Linnaeus) (Crustacea, Decapoda, Palaemonidae) from Ribeira de Iguape River, southern Brazil
Wagner C. ValentiI; Jeanette de T.C. de MelloII; Vera L. LobãoIII
IDepartamento de Biologia Aplicada, Faculdade de Ciências Agrárias e Veterinária e Núcleo de Estudos de Biologia, Ecologia e Cultivo de Crustáceos, Centro de Aquicultura, Universidade Estadual Paulista, Rodovia CarlosTonanni Km 5, 14.870-000 Jaboticabal, São Paulo, Brasil, Bolsista do CNPq
IIDepartamento de Biologia, Iinstituto de Biociências, Universidade de São Paulo, Caixa Postal 11461, 05422-970 São Paulo, São Paulo, Brasil
IIISeção de Aquicultura, Instituto de Pesca, Av. Francisco Matarazzo 455, 05131-900 São Paulo, São Paulo, Brasil, Bolsista do CNPq
ABSTRACT
In this paper, female Macrobrachium carcinus (Linnaeus, 1758) maturation curve, weight/length relationship, length and weight growth curves were studied. Prawns were captured, by traps, in Ribeira de Iguape river (24ºS and 47ºW), southern Brazil. There were used 207 females. It was observed that M. carcinus presents several spawnings during its life cycle and reproductive period goes on, at least till six years old. Weight/length relationship can be represented for the equation W = 8.73 E-3 L3.28. Expressions obtained for length and weight growth curves are Lt = 21 .0 (1-e-0493t) and Wt= 190 (1-e-0493t)3.28. respectively. A symptotic maximum length and asymptotic maximum weight are nearly attained at six and eight years old, respectively.
Key words: Crustacea, Macrobrachium, maturation, growth, prawn
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ACKNOWLEDGMENTS. We are grateful to Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for financial support and to Instituto de Pesca da Secretaria da Agricultura e Abastecimento de São Paulo for the facilities in the Registro city laboratory. We either like to thank Miss Maria de Fátima F. de Magalhães, a Cultura Inglesa English teacher, for the language revision.
BIBLIOGRAPHIC REFERENCES
Recebido em 30.III.1994; aceito em 11.X.1994.
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Publication Dates
-
Publication in this collection
22 July 2009 -
Date of issue
1994
History
-
Accepted
11 Oct 1994 -
Received
30 Mar 1994