TY - JOUR
T1 - Age and growth of the finescale triggerfish, Balistes polylepis (Teleostei: Balistidae), on the coast of Mazatlán, Sinaloa, Mexico
AU - Barroso-Soto, Ithandehui
AU - Castillo-Gallardo, Emerita
AU - Quiñonez-Velázquez, Casimiro
AU - Morán-Angulo, Ramón E.
PY - 2007/1
Y1 - 2007/1
N2 - To estimate the weight-length relationship, determine age, and describe growth of the finescale triggerfish, Balistes polylepis Steindachner, 1876, 552 specimens were measured and weighed, and 318 first dorsal spines were collected from the artisanal catch in Mazatlán, Sinaloa, Mexico, between October 2000 and October 2001. Fish ranged between 16 and 53 cm in total length (TL), and distribution was biased toward small sizes. Age was assigned according to the number of opaque-hyaline bands in spines, identifying seven age groups (1-7), with age groups 2, 3, and 4 jointly representing over 80% of the collection. The von Bertalanffy model was adequately fitted to the age-TL data and accounted for 91% of the variation in TL. Parameters were estimated as TL∞ = 55.8 cm; K = 0.17 yr-1, and t0 = -1.7 yr. The total weight (TW) of the finescale triggerfish ranged between 75 and 2,200 g, and the TW-TL relationship showed a negative allometric growth (b = 2.7). These results are the first reported for age and growth of this species.
AB - To estimate the weight-length relationship, determine age, and describe growth of the finescale triggerfish, Balistes polylepis Steindachner, 1876, 552 specimens were measured and weighed, and 318 first dorsal spines were collected from the artisanal catch in Mazatlán, Sinaloa, Mexico, between October 2000 and October 2001. Fish ranged between 16 and 53 cm in total length (TL), and distribution was biased toward small sizes. Age was assigned according to the number of opaque-hyaline bands in spines, identifying seven age groups (1-7), with age groups 2, 3, and 4 jointly representing over 80% of the collection. The von Bertalanffy model was adequately fitted to the age-TL data and accounted for 91% of the variation in TL. Parameters were estimated as TL∞ = 55.8 cm; K = 0.17 yr-1, and t0 = -1.7 yr. The total weight (TW) of the finescale triggerfish ranged between 75 and 2,200 g, and the TW-TL relationship showed a negative allometric growth (b = 2.7). These results are the first reported for age and growth of this species.
UR - http://www.scopus.com/inward/record.url?scp=33846131994&partnerID=8YFLogxK
U2 - 10.1353/psc.2007.0002
DO - 10.1353/psc.2007.0002
M3 - Artículo
SN - 0030-8870
VL - 61
SP - 121
EP - 127
JO - Pacific Science
JF - Pacific Science
IS - 1
ER -