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IJSTR >> Volume 5 - Issue 5, May 2016 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Population Dynamic Of Rabbit Fish (Siganus Canaliculatus) In Gulf Of Bone Luwu Regency, South Sulawesi

[Full Text]

 

AUTHOR(S)

Irman Halid, Achmar Mallawa, Musbir, Faisal Amir

 

KEYWORDS

Population dynamics, Siganus canaliculatus, Bone Bay Luwu

 

ABSTRACT

Rabbitfish (Siganus canaliculatus) is ones of coral reef inhabitants are exploited intensively and suspected population decline , so the necessary management measures was needed. The study aims to analyze aspects of the dynamics of rabbit fish populations in the Bone Gulf Luwu waters. Data was collected by Staratied Random Sampling, estimation of the size structure, the number of age groups and average length of fish per age group use a column diagram and Bhattacharya method. Population growth is analyzed using the Von Bertalanffy equation exponential growth, the value of L ~, K, by Ford and Walford method and t0 by Pauly method. The total mortality, fishing mortality, the rate of exploitation and Y / R were estimated by methods of Beverton and Holt, and natural mortality by method of Pauly. The results showed that the population of rabbit fish in the waters of the Gulf of Bone Luwu consists of five age groups, has the average length and the lenth range of 8.0904 cm and 5.7 to 9.0 cm on the relative age of one year, 10.9222 cm and 9.0 to 12.3 cm on the relative age of two years, from 12.3 to 15.6 cm 14.1543 cm on the relative age of three years, 16.8949 cm and 15.6 to 18.9 cm on the relative age four years, and 19.4906 cm and 18.9 to 20.7 cm on the relative age of five years. Maximum length (L∞) of 30.5814 cm and the growth rate coefficient (K) of 0.1572 per year, while the t0 value of -1.4815 ofyear. The total mortality (Z) of 1.6913 per year, the mortality (M) of 0.6109, fishing mortality t 1.0804 per year, the rate of exploitation (E) of 0.6388 and optimal exploitation rate (Eopt) of 0.50, the value of Y / R is now 0.0127 and the value of Y / R optimal 0.0150. The conclusion that the population is dominated medium sized fish, slow population growth as a result of the high mortality rate of the capture and exploitation as well as the recruitment process is not optimal.

 

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