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Abundancia relativa de postlarvas de camarones peneidos en la bahía Salinas del Marqués, Golfo de Tehuantepec, México: Marzo a junio de 1999

2006; University of Valparaíso; Volume: 41; Issue: 1 Linguagem: Inglês

10.4067/s0718-19572006000100016

0718-1957

Sebastián Ramos-Cruz, Eduardo Ramos Santiago,

Marine and fisheries research

biweekly sampling of shrimp postlarvae were carried out in the front of the beach of the Salinas del Marques Bay, Oaxaca, Mexico, to evaluate their incidence toward the coastal zone and analyze their possible relationship with the lunar periods and the time of collection.A total of 2,820 postlarvae were collected, of which L. vannamei constituted the 87% followed by F. californiensis with the 6.6%, F. brevirostris with the 5.1% and L. stylirostris with the 1.4%.Three pulses in the postlarval recruitment were identified; the most important had a density of 7 postlarvae 10 m -3 .These pulses were more coincident with periods of full moon and the relative abundance diminished from the 06:00 h to 13:00 h and increased from 14 h ahead.These results suggest the probability that the density increases during night hours.