Busca avançada
Ano de início
Entree
Conteúdo relacionado
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

LIFESPAN AND REPRODUCTIVE DYNAMICS OF THE COMMERCIALLY IMPORTANT SEA BOB SHRIMP XIPHOPENAEUS KROYERI (PENAEOIDEA): SYNTHESIS OF A 5-YEAR STUDY

Texto completo
Autor(es):
Castilho, Antonio L. [1, 2] ; Bauer, Raymond T. ; Freire, Fulvio A. M. [3] ; Fransozo, Vivian [4] ; Costa, Rogerio C. [5] ; Grabowski, Raphael C. [1] ; Fransozo, Adilson [1]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Univ Estadual Paulista, Dept Zool, Nucleo Estudos Biol Ecol Cultivo Crustaceos, IB, UNESP, BR-18618000 Botucatu, SP - Brazil
[2] Univ Louisiana Lafayette, Dept Biol, Lafayette, LA 70504 - USA
[3] Univ Fed Rio Grande do Norte, Dept Bot Ecol & Zool, BR-59072970 Natal, RN - Brazil
[4] Univ Estadual Sudoest Bahia, Dept Ciencias Nat Zool, BR-45031900 Itapetinga, BA - Brazil
[5] Univ Estadual Paulista, LABCAM Lab Biol CamaroesMarinhos & Agua Doce, Dept Ciencias Biol, FC, UNESP, BR-17033360 Bauru, SP - Brazil
Número total de Afiliações: 5
Tipo de documento: Artigo Científico
Fonte: Journal of Crustacean Biology; v. 35, n. 1, p. 30-40, JAN 2015.
Citações Web of Science: 20
Resumo

Population parameters of the shrimp Xiphopenaeus kroyeri (Heller, 1862) (sex ratio, length-frequency distributions (carapace length, CL), growth, lifespan, size of sexual maturity, spawning and recruitment) were analyzed in a long-term study from January 1998 through June 2003. The data on these parameters were collected and analyzed to test the hypothesis that the main period of juvenile recruitment in the bay coincides with the period of fishery closures currently designated by the Brazilian Institute of Environment and Renewable Natural Resources. Monthly collections were conducted along the southeastern Brazilian coast, using a shrimp fishing boat with ``double-rig{''} nets sampling at stations up to 40 m depth. Sex ratios were female-biased only in zones with high reproductive activity such as in stations deeper than 15 m (chi(2) test, p <0.05). The mean size of males and females was 15.3 +/- 3.1 mm CL and 16.2 +/- 4.7 mm CL, respectively, with size at sexual maturity estimates (CL50) of 14.8 mm for males and 15.5 mm for females. Mean growth curves provided estimates of CL infinity = 29.31 mm, k = 0.009/day, t(0) = -0.25 and CL infinity = 35.33 mm, k = 0.006/day, t(0) = -0.23 for males and females, respectively, and average lifespans of 1.35 for males and 2.12 years for females. Recruitment and abundances of reproductive females were highly correlated with the environmental factors such as higher water temperature and finer-grained bottom sediment (canonical correlation, r = 0.63, p < 0.001). The reproductive peaks in February-April 1998, March-May 1999 and February-May 2002 were followed by recruitment peaks in May-July 1998, July-September 1999 and April-June 2002, respectively. Thus, the proposed period of fisheries closure (March to May) does not coincide with the main recruitment periods observed for X. kroyeri. (AU)

Processo FAPESP: 09/54672-4 - Biologia reprodutiva e dinâmica populacional dos camarões Penaeoidea (Crustacea, Decapoda) em duas regiões do sudeste brasileiro: efeito latitudinal e proposta para o período de defeso
Beneficiário:Rogério Caetano da Costa
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 07/56733-5 - Abundância, distribuição e dinâmica populacional dos camarões Penaeoidea (Crustacea: Decapoda) no litoral do Estado de São Paulo
Beneficiário:Antonio Leão Castilho
Linha de fomento: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 98/07090-3 - Biodiversidade marinha bêntica no Estado de São Paulo
Beneficiário:Antonia Cecília Zacagnini Amaral
Linha de fomento: Auxílio à Pesquisa - Programa BIOTA - Temático
Processo FAPESP: 10/50188-8 - Crustáceos decápodes: multidisciplinaridade na caracterização da biodiversidade marinha do estado de São Paulo (taxonomia, espermiotaxonomia, biologia molecular e dinâmica populacional) (Biodiversidade Marinha)
Beneficiário:Fernando Luis Medina Mantelatto
Linha de fomento: Auxílio à Pesquisa - Programa BIOTA - Temático