We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Length-weight and length-length relationships, gonadosomatic indices and size at first maturity of Eugerres mexicanus ( Steindachner, 1863) ( Percoidei: Gerreidae) from the Usumacinta River, Mexico.
- Authors
Valdez‐Zenil, J.; Rodiles‐Hernández, R.; González‐Acosta, A. F.; Mendoza‐Carranza, M.; Barba Macías, E.
- Abstract
This study examines the length-weight ( L- W) and length-length ( L- L) relationships, gonadosomatic indices, and size at sexual maturity for individuals of the endemic Mexican mojarra, Eugerres mexicanus ( Steindachner, 1863) from the Usumacinta River Basin, Tabasco, Mexico. From April 2008 to January 2010, 360 specimens were examined, including 151 (41.9%) male, 179 (49.7%) female and 30 unsexed (8.3%) individuals. Overall female:male ratio was 1.2 : 1. Gonadosomatic index ( GSI) values indicate increased reproductive activity during February, with significant differences between males ( GSI = 2.07) and females ( GSI = 5.48). The mean size at first maturity ( L50) was 17.3 cm TL for males and 20.5 cm TL for females.
- Subjects
USUMACINTA River (Guatemala &; Mexico); FISH sex ratio; REGRESSION analysis; FISH feeds; GONADS
- Publication
Journal of Applied Ichthyology, 2014, Vol 30, Issue 1, p218
- ISSN
0175-8659
- Publication type
Article
- DOI
10.1111/jai.12267