Reproduction, Age and Growth of the Lane Snapper, Lutjanus Synagris (Linnaeus), in Trinidad, West Indies

Author: Manickchand-Dass, Sherry

Source: Bulletin of Marine Science, Volume 40, Number 1, January 1987 , pp. 22-28(7)

Publisher: University of Miami - Rosenstiel School of Marine and Atmospheric Science

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Abstract:

Lane snappers, Lutjanus synagris, were examined from fish pot and trawl catches taken from November 1979 to November 1981 in Trinidad. Size at maturity, sex ratio, fecundity, time of spawning, age and growth were studied. Females significantly outnumbered males in trawl catches. Size at maturity was achieved at 1 year for males and 2 years for females. Fecundity ranged from 28,150 eggs for a 29.4-cm fish to 595,700 for a 41.9-cm fish. Spawning occurred throughout the year with a peak around March. Otoliths were used for age determination and the rings were deposited annually. Four age groups were observed for each sex. Males grew slightly faster, and achieved a larger size than females. The von Bertalanffy growth equations were l_t = 70.8[1 − e^{−0.22(t+0.55)}] and l_t = 60.3[1 − e^{−0.20(t+0.68)}] for males and females respectively.

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Document Type: Research article

Publication date: 1987-01-01

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The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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