ABSTRACT. The settlement of Panulirus inatus postlarvae in the southeastern Gulf of California was monitored approximately every week at one location (Puerto Viejo Bay) in Mazatlán Bay, from november 2009 to October 2010. Each sampling date was assigned to the lunar phase. Modied sandwich collectors were used to capture postlarval lobsters. Three collectors were used to examine pueruli settlement. A total of 238 P. inatus pueruli were collected, which included 40 pueruli (17 %) and 198 post-pueruli (83 %). Settlement was highest using collector number one (140 pueruli), and november 2009 was the month with the greatest total number of animals (121). Signicant dierences were found with respect to the lunar phase, but the higher settlement in this study occurred during the new moon phase. Key words: Gulf of California, Panulirus inatus, pueruli settlement, modied sandwich collector RESUMEN. El asentamiento de la postlarva de Panulirus inatus en el sureste del Golfo de California fue revisado cada semana en una estación de muestreo en la zona denominada Ensenada de Puerto Viejo de la bahía de Mazatlán, Sinaloa, de noviembre 2009 a octubre 2010. Cada fecha de muestreo fue asignada de acuerdo a la fase lunar. En este estudio se utilizaron colectores tipo Sandwich modicado para capturar las postlarvas de langosta. Tres colectores fueron usados para examinar el asentamiento de puérulos de langosta. Se colectó un total de 238 organismos de P. inatus, 40 puérulos (17 %) y 198 postpuérulos (83 %). El mayor asentamiento fue en el colector número uno (140 puérulos) y el mes de noviembre fue cuando se obtuvo la mayor cantidad de organismos (121). Se encontraron diferencias signicativas entre las postlarvas y fase lunar, pero los mayores asentamientos ocurrieron en la fase de Luna nueva.Palabras clave: Golfo de California, Panulirus inatus, asentamiento de puérulos, Colector Sandwich modicado.
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