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

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Title: Timing of Puberty and Reproductive Performance in Wild-Reared and Hatchery-Reared Pacific Red Snapper Lutjanus peru
Authors: Danitzia A. Guerrero-Tortolero
Daniel Romo-Mendoza
Juan C. Pérez-Urbiola
Rafael Campos-Ramos
Keywords: Lutjanus peru
puberty
reproduction
sex steroids
LC Subject Headings: Fish culture--Israel.
Fish culture.
Issue Date: 2016
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.
Pages/Duration: 8 pages
URI/DOI: http://hdl.handle.net/10524/54960
ISSN: 0792-156X
Appears in Collections:Volume 68, 2016



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