Skip to main content

Free Content Life history of red grouper (Epinephelus morio) off the coasts of North Carolina and South Carolina

Download Article:
 Download
(PDF 575.4 kb)
 

Abstract:

The objective of this research was to update the knowledge on the life history of red grouper Epinephelus morio (Valenciennes in Cuvier and Valenciennes, 1828), a commercially important species off North Carolina and South Carolina. A total of 2146 specimens was sampled from commercial catches and obtained with fishery-independent gear between December 1996 and September 1999. Red grouper ranged in total length (TL) and age from 315 to 851 mm and from 2 to 20 yrs. Observed length-at-age was described by the following von Bertalanffy growth equation: TL (mm) = 853(1−exp (−0.209(age (yr)+0.812))). Sex and reproductive state of 2068 red grouper were assessed by histological analysis. Of these, 86.8% were classified as female, 5.9% as transitional, and 7.3 % as male. Age at 50% maturity was 2.4 yrs and TL at 50% maturity was 487 mm. The sex ratio of red grouper was 1 male to 6.6 females. Red grouper was confirmed to be a protogynous hermaphrodite. Age at 50% transition was 7.2 yrs and TL at 50% transition was 690 mm. Spawning in females occurred between mid-February and mid-June. Spawning females were captured on multiple locations off the North Carolina and South Carolina coasts, at depths between 33 and 90 m.

Document Type: Research Article

Publication date: January 1, 2007

More about this publication?
  • 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.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • ingentaconnect is not responsible for the content or availability of external websites
umrsmas/bullmar/2007/00000080/00000001/art00003
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more