Population ecology of the planktonic shrimp Lucifer faxoni Borradaile, 1915 (Crustacea, Sergestoidea, Luciferidae) of the southeastern coast of Brazil

Autor(es)

Alves Teodoro, Sarah de Souza ^[1] ; Negreiros-Fransozo, Maria Lucia ^[2] ; Simoes, Sabrina Morilhas ^[1] ; Lopes, Mateus ^[1] ; da Costa, Rogerio Caetano ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista Julio de Mesquita Filho UN, Fac Ciencias, Dept Ciencias Biol, BR-17033360 Bauru, SP - Brazil

^[2] Univ Estadual Paulista Julio de Mesquita Filho UN, Inst Biociencias, Dept Zool UNESP, BR-18618970 Botucatu, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Journal of Oceanography; v. 60, n. 2, p. 245-253, APR-JUN 2012.
• Citações Web of Science: 8

Resumo

Luciferid shrimps have short life spans and a rapid turnover of generations, engage in sequential spawning, and protect their eggs during incubation. This study investigates the ecology of Lucifer faxoni Borradaile, 1915 in the littoral zone, Ubatuba region, São Paulo. Sampling was conducted monthly from July 2005 to December 2006 using a Renfro net trawled over a distance of 50 m for a total sampling effort of 50 m² at each station. Nine stations were sampled, ranging from 1 to 15 m deep. Three stations each were grouped into zones 1, 2 and 3 (Z1, Z2 and Z3). Monthly values of salinity, temperature and rainfall were recorded at each station. The pre-buccal somite length (SL) of each specimen was measured. The results showed that in shallower zones (Z1 and Z2), 6306 individuals were captured, whereas in the deeper zone (Z3), 3808 specimens were captured, but no significant differences in SL was detected between the specimens from Z1 and Z2 and those from Z3 (ANOVA, p=0.25). The abundance of shrimps did not differ significantly between seasons (Tukey's test, p=0.02) except in the spring. The sex ratio differed significantly over the seasons (χ², p<0.05). The results were closely associated with environmental factors with respect to the spatial and seasonal distribution of L. faxoni. Rainfall affected salinity directly, and contributed to the displacement of these shrimps to deeper areas. (AU)

• Processo FAPESP: 98/03134-6 - Análise bioecológica de crustáceos braquiúros costeiros do Litoral Norte Paulista
• Beneficiário: Maria Lucia Negreiros Fransozo
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• 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
• Modalidade de apoio: 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
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 04/07309-8 - Contribuição para o período de defeso do camarão do estado de São Paulo: distribuição espaço-temporal das pós-larvas e juvenis dos camarões rosa (Farfantepenaeus spp.), branco (Litopenaeus schmitti) e sete-barbas (Xiphopenaeus kroyeri) na região de Ubatuba, SP
• Beneficiário: Rogério Caetano da Costa
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores