Title

A preliminary study of the age and growth of Paddletail Snapper Lutjanus gibbus (Forsskål 1775) in Bunaken Marine Park, North Sulawesi, Indonesia

Document Type

Article

Publication details

Holloway, CJ, Bucher, DJ & Kearney, L 2015, 'A preliminary study of the age and growth of Paddletail Snapper Lutjanus gibbus (Forsskål 1775) in Bunaken Marine Park, North Sulawesi, Indonesia', Asian Fisheries Science, vol. 28, pp. 186-197.

Published version available from:

http://www.asianfisheriessociety.org/publication/downloadfile.php?id=1087&file=WTBkU2JVeDZRVEJOZW1NeVRrUlJkMDFFUlRCT1ZFVXhUWHBqTTAxcVZYVmpSMUp0VFdwQmVFNXFRVEZOUkdzOQ==&dldname=A%20Preliminary%20Study%20of%20the%20Age%20and%20Growth%20of%20Paddletail%20Snapper%20Lutjanus%20gibbus%20(Forssk%C3%A5l%201775)%20in%20Bunaken%20Marine%20Park,%20North%20Sulawesi,%20Indonesia.pdf

Abstract

Paddle tail snapper Lutjanus gibbus (Forsskål 1775) is an important target species of commercial, recreational, artisanal and indigenous fisheries in tropical Indo-Pacific waters, but away from the centre of its distribution it is often avoided as being a high risk for ciguatera poisoning. This study investigated the age and growth of a tropical population of L. gibbus in Bunaken Marine Park, Indonesia. A total of 95 specimens were sampled with fork lengths between 151-312 mm. From growth increments on sectioned otoliths, ages ranged from 1-9 years old, with ages 3 and 4 years being the most common. Growth in length was described by the von Bertalanffy growth function with parameters L∞ = 274 mm (fork length), K = 0.78 and t0 = -0.24. The population of L. gibbus in Bunaken Marine Park consists of fast-growing fish that attain smaller size than populations at higher latitudes, which may possibly contribute to a lower risk of ciguatera poisoning. The fast population turn-over characteristics of L. gibbus indicates the potential of the population to sustain high harvest pressure. However, the lack of management of the fishery could still lead to over-exploitation.