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Volume 41 - Number 1 - 2006

Relative abundance of penaeid shrimp postlarvae in the Salinas del Marques Bay, Gulf of Tehuantepec, Mexico. March to June of 1999

Sebastián Ramos-Cruz1 y Eduardo Ramos Santiago1


1 Programa Camarón del Instituto Nacional de la Pesca,Centro Regional de Investigación Pesquera (CRIP) Salina Cruz Prol. Playa Abierta s/n, Col. San Juan Miramar, C.P. 70600 Salina Cruz, Oaxaca, México



From March to June 1999 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.


Key words: Crustacea, L. vannamei, L. stylirostris, F. californiensis, F. brevirostris



1Laboratorio de Zooplancton, Instituto de Ciencias del Mar y Limnología,Universidad Nacional Autónoma de México. A. P. 70-305, 04510 México, D. F. México
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