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(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.)

REPRODUCTION AND RECRUITMENT OF THE SEABOB SHRIMP: A THREATENED EXPLOITATION SPECIES IN SOUTHEASTERN OF BRAZIL

Autor(es):
da Silva, Evelyn Raposo [1] ; Sancinetti, Gustavo Sergio [2] ; Fransozo, Adilson [2] ; Azevedo, Alexandre [1] ; da Costa, Rogerio Caetano [3]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Fed Rio de Janeiro, NUPEM, BR-27971550 Macae, RJ - Brazil
[2] UNESP, Inst Biociencias, Dept Zool, Nucleo Estudos Biol Ecol & Cultivo Crustaceos, BR-18618000 Botucatu, SP - Brazil
[3] Fac Ciencias, Dept Ciencias Biol, Lab Biol Camaroes Marinhos & Agua Doce LABCAM, BR-17033360 Bauru, SP - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Boletim do Instituto de Pesca; v. 41, n. 1, p. 157-172, 2015.
Citações Web of Science: 2
Resumo

This study evaluated the reproductive period and recruitment of the threatened exploitation shrimp Xiphopenaeus kroyeri (Heller) in the southeast coast of Brazil. Monthly samples were carried out from March 2008 to February 2010 distributed in stations located inside (5, 10 and 15 m depth) and outside (25, 35 and 45 m depth) areas using a fishery boat equipped with an otter-trawl net. Water samples were taken for determination of temperature and salinity, and sediment samples for determination of texture and organic matter content. The reproductive period was determined by monthly amount (%) of females with mature gonads (ED+DE). The differences in sex ratio were tested using a Chi-square (x(2)) test. A Principal Components Analysis (PCA) was performed for an overview of the environmental variables and Redundancy Analysis (RDA) was performed to assess the relationship between abiotic factors and reproductive activity and recruitment. The size (carapace length) at the onset of sexual maturity was 10 mm and 12 mm for males and females, respectively. Reproductive females (based on gonad development) were found in all sampled months, with remarket or conspicuous peaks during winter and summer. The input of young recruits occurred one to two months after the increase of reproductive females. It was verified an optimal of temperature range for reproductive females, from 21 to 24 degrees C. These results provide subsidies that can assist making decisions about protecting priorities and in monitoring the population stocks of this important fishery resource. (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: 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