Timing of Puberty and Reproductive Performance in Wild-Reared and Hatchery-Reared Pacific Red Snapper Lutjanus peru

Date
2016
Authors
Danitzia A. Guerrero-Tortolero
Daniel Romo-Mendoza
Juan C. Pérez-Urbiola
Rafael Campos-Ramos
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Abstract
A ten-year study (2005 to 2015) was conducted to examine the timing of puberty and reproductive performance in Pacific red snapper Lutjanus peru. Wild young juveniles reared in a 200 m3 lined-pond from 2005 were captured and spawned over the next three consecutive years, starting in 2009. The study continued in hatchery-reared red snappers from the 2010 progenies that spawned in 2014. In wild-reared and hatchery-reared red snapper, puberty occurred in both sexes at three years and nine months. In a pond, eight wild-reared females had on average 54 days of broadcast spawning, which corresponded to 0.276 M viable eggs per day. Each female had on average 1.838 million (M) viable eggs, and a relative fecundity of 0.555 M eggs/kg yielding 0.010 M eggs/kg per spawn. All wild-reared males (n = 22) had running sperm. In progeny hatchery-reared red snapper, nine females had vitellogenic oocytes, but only three reproduced. Ninety percent of hatchery-reared males (n=31) had running sperm. The ratio of 11-ketosterone to estradiol allowed identification or corroboration of sex. Results suggest L. peru synchronizes reproduction according to photoperiod and water temperature. This species (2.3+ kg, 52.0+ cm) is a potential candidate for sustainable aquaculture, including rearing, and reproduction in captivity.
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Lutjanus peru, puberty, reproduction, sex steroids, Fish culture--Israel., Fish culture.
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8 pages
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The Israeli Journal of Aquaculture - Bamidgeh
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