[Growth and mortality of the fish Haemulon aurolineatum (Teleostei: Haemulidae) from southwest of Margarita Island, Venezuela].
We analyzed the growth and natural mortality of the fish known locally as cuji (H. aurolineatum) in the southwest of Margarita Island, July 2005 to June 2006. A sample of 1,378 males and 1,143 females from artisanal fishing vessels of Boca del Río was analyzed. The common relation for both sexes was expressed by the equation P=0.038*L(2.87). The asymptotic length (L(infinity)) was estimated with Powell's (1979) routine and Wetherall (1986), and the growth coefficient (k) with ELEFAN I - FISAT II (FAO-ICLARM). The modal progression analysis was used after decomposition of lengths frequency according to Bhattacharya, and the estimations of L(infinity), and k optimized according to Gulland and Holt (1959). The growth curve was fitted to von Bertalanffy (1960); it is exponential, with accelerated growth in the first two years and less growth as the fish approaches maximal length. The rate of natural mortality was high (M=1.15 year(-1)), and probably was caused by high depredation.
Bravo
Edwis
E
Escuela de Ciencias Aplicadas del Mar, Departamento de Acuacultura, Instituto de Investigaciones Científicas, Núcleo de Nueva Esparta, Universidad de Oriente, Venezuela. edwisb@gmail.com
Eslava
Nora
N
González
Leo
L
D000818:Animals; D005260:Female; D005398:Fisheries; D008297:Male; D008954:Models, Biological; D009026:Mortality; D010473:Perciformes / Q000254:growth & development*; D014687:Venezuela