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Echinorhinus cookei Pietschmann, 1928 (Chondrichthyes: Squaliformes, Echinorhinidae), primer registro en aguas de El Salvador, Pacífico oriental tropical 

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Identificación de parásitos platelmintos del botete silvestre (Sphoeroides annulatus Jenyns, 1853) usando una correlación invariante digital a color 

NOTA CIENTÍFICA

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

Autores

CORRESPONSAL

Sebastián Ramos-Cruz

ramoscruz@yahoo.com

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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

Eduardo Ramos Santiago

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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

Resumen

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.

Palabras clave

Crustacea, L. vannameiL. stylirostrisF. californiensisF. brevirostris

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