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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.)

Seasonal contrasts in abundance and reproductive parameters of Penilia avirostris (Cladocera, Ctenopoda) in a coastal subtropical area

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Autor(es):
Miyashita, Leonardo K. [1] ; Pompeu, Mayza [1] ; Gaeta, Salvador A. [1] ; Lopes, Rubens M. [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Dept Biol Oceanog, Oceanog Inst, BR-05508120 Sao Paulo - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Marine Biology; v. 157, n. 11, p. 2511-2519, NOV 2010.
Citações Web of Science: 9
Resumo

We studied the population dynamics and the reproductive biology of Penilia avirostris during three consecutive years on the inner shelf off Ubatuba, Brazil. Penilia avirostris individuals and its eggs and embryos were counted, measured, and classified into stages. The species occurred throughout the studied period, in a wide temperature range (14.8-28.2A degrees C). Cladoceran densities were usually higher (> 2,000 ind m(-3)) in warm seasons, when the water column was stratified as a consequence of bottom intrusions of the cold- and nutrient-rich South Atlantic Central Water. Juveniles, non-reproducing females, and parthenogenic females were the dominant developmental stages. Males and gamogenic females were rare and only occurred when females reached peak abundances. This suggests that in tropical and subtropical coastal seas gamogenesis in P. avirostris is not as common as in temperate seas, but may play a significant role in the density-dependent control of the population preceding unfavourable periods. (AU)

Processo FAPESP: 07/56931-1 - Dinâmica populacional de Appendicularia e Cladocera na plataforma interna de Ubatuba (SP): um estudo sazonal e multianual
Beneficiário:Leonardo Kenji Miyashita
Modalidade de apoio: Bolsas no Brasil - Mestrado