Dissertation/Thesis Abstract

A Snapshot of the Age, Growth, and Reproductive Status of Gray Triggerfish (Balistes Capriscus, Gmelin 1789) on Three Artificial Reefs in the Northwest Gulf of Mexico
by Lee, Adam M., M.S., The University of Texas Rio Grande Valley, 2019, 76; 13881208
Abstract (Summary)

Age, growth, and reproductive status of gray triggerfish (Balistes capriscus) were identified from 2015-2016 on artificial reefs in the northwest Gulf of Mexico. Individuals ranged from 232-432 mm fork length with and a mean fork length of 319 mm. Individuals from age 0.2 to 5.2 yrs were observed with a weight to length relationship of Wg = 1.1 x -104 x FL2.7 (r2 = 0.94, n = 112), where FL = fork length (mm) and Wg = weight (g). A von Bertalanffy growth equation of Lt = 326(1 - e - 0.9 (t + 1.71)) was calculated irrespective of sex. Gonadosomatic index and histological characterization of reproductive tissue identified June-August as the peak spawning season. A female length to batch fecundity (BF) relationship of Log BF = 2.79 x Log (FL 0.81) (r2 = 0.28) was identified. Continued management of gray triggerfish on artificial reefs is necessary to increase the stock and eventually lead to robust and sustainable fisheries.

Indexing (document details)
Advisor: Cintra-Buenrostro, Carlos E.
Commitee: Kline, Richard, Provenzano, Daniele
School: The University of Texas Rio Grande Valley
Department: School of Multidisciplinary Sciences
School Location: United States -- Texas
Source: MAI 58/06M(E), Masters Abstracts International
Subjects: Biology, Environmental science
Keywords: Age, Artificial reef, Gray triggerfish, Growth, Reproduction
Publication Number: 13881208
ISBN: 978-1-392-27957-1
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