The carapace length-brood size (CL-BS) relationship of female Panulirus argus from northern Quintana Roo, México, was examined. Ovigerous females were sampled in April–November 1987, July–September 1988, and April–November 1989. No significant differences
were found in the relationship either seasonally or interannually, indicating that the mean brood size of females of equal carapace lengths remained fairly similar throughout the study period, despite the passage of two hurricanes over Puerto Morelos in 1988. No differences were apparent in
the relative size of the eggs throughout their development, but eggs in all development stages were smaller in autumn than in spring or summer. This suggests that the spring spawn is the first of the breeding season, and that eggs are smaller in subsequent spawnings. Female P. argus
from Puerto Morelos have a CL-BS relationship more similar to females from Brazil than from Cuba. Females between 105 and 120 mm CL contribute 42% of the total egg production from the population. The potential egg production of female P. argus in Puerto Morelos is much higher than in
the Florida Keys and the Bahamas.
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