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Growth and Exploitation Rate of the Bombay Duck (Harpodon Nehereus Hamilton, 1822) (Fish: Synodontidae) in Tarakan Island Waters, Indonesia
| Content Provider | Semantic Scholar |
|---|---|
| Author | Laga, Asbar Affandi, Ridwan Muchsin, Ismudi Kamal, Mohammad Mukhlis |
| Copyright Year | 2015 |
| Abstract | The Bombay duck ( Harpodon nehereus ) is an economically important fish inhabiting Tarakan waters of North Kalimantan Province. Unless an appropriate management performed, an ever increasing in exploitation of this synodontid species will threat its population sustainability. A research was conducted from March 2013 to February 2014 in Tarakan waters aiming to investigate on growth and exploitation rate of the Bombay duck. Three sampling sites were determined for the purpose of sample collection. Fish was collected by a trawl of 1: 2: 2 cm in mesh size, towed for 30 minutes at each sub-station. On board, approximately 50 individual fishes of various size were randomly collected. In total, 1051 fishes were collected consisting of 544 males and 507 females. Data of length-weight relationships was used in analyzing individual growth, whereas length was for length frequency distribution in order to calculate population growth. The results showed that the Bombay duck growth was allometrically negative in station 2 and 3, whereas isometric in station 1. Fulton's condition factor varied between 0.93 - 0.99 in males and 0.94 - 0.98 in females, of which the smallest CF values were in May (male) and August (female). L∞ values for males and females were alike 278.78 mm with K value of 0.51 and 0.38 for males and females, respectively. Fishing mortality (F) was larger than natural mortality, and the exploitation rate of 0.80 which far beyond the sustainable fishing of 0.5 (overfished). |
| Starting Page | 341 |
| Ending Page | 353 |
| Page Count | 13 |
| File Format | PDF HTM / HTML |
| Volume Number | 22 |
| Alternate Webpage(s) | http://gssrr.org/index.php?journal=JournalOfBasicAndApplied&op=download&page=article&path%5B%5D=3591&path%5B%5D=2299 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
