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Gray Triggerfish Reproductive Biology, Age, and Growth off the Atlantic Coast of the Southeastern USA
- Source :
- Transactions of the American Fisheries Society. 146:523-538
- Publication Year :
- 2017
- Publisher :
- Wiley, 2017.
-
Abstract
- The Gray Triggerfish Balistes capriscus supports fisheries on both sides of the Atlantic Ocean. We utilized fishery-independent samples to assess the age structure, growth, sex ratio, size and age at maturity, spawning season, and spawning frequency of the Gray Triggerfish population off the southeastern U.S. Atlantic coast. From 1991 to 2012, 7,685 samples were collected, ranging in FL from 82 to 578 mm and ranging in age from 0 to 13 years. Our study provides key life history information for an exploited population and is the first to comprehensively describe age, growth, and reproduction for a Balistes species. We documented that the Gray Triggerfish is sexually dimorphic, with adult males attaining larger sizes at age and a larger maximum size than females. Sex-specific growth curves were fitted, yielding the following von Bertalanffy equations: FLt = 419[1 ā eā0.54(t + 0.61)] for males and FLt = 352[1 ā eā0.94(t + 0.22)] for females. This species is characterized by a medium size at maturity ...
- Subjects :
- 0106 biological sciences
education.field_of_study
biology
Balistes
Ecology
010604 marine biology & hydrobiology
Population
Triggerfish
Zoology
04 agricultural and veterinary sciences
Aquatic Science
biology.organism_classification
01 natural sciences
Sexual dimorphism
Reproductive biology
040102 fisheries
0401 agriculture, forestry, and fisheries
Life history
education
Gray (horse)
Ecology, Evolution, Behavior and Systematics
Sex ratio
Subjects
Details
- ISSN :
- 15488659 and 00028487
- Volume :
- 146
- Database :
- OpenAIRE
- Journal :
- Transactions of the American Fisheries Society
- Accession number :
- edsair.doi...........81c9f43713dd7269fecc071df3213c8e