Sains Malaysiana 46(6)(2017): 851–858

http://dx.doi.org/10.17576/jsm-2017-4606-03

Biological Aspects of Channa limbata(Cuvier, 1831) in Ta Bo - Huai Yai Wildlife Sanctuary, Phetchabun Province, Thailand

(Aspek Biologi Channa limbata(Cuvier, 1831) di Suaka Hidupan Liar Ta Bo - Huai Yai, Wilayah Phetchabun, Thailand)

KAN KHOOMSAB¹* & SUWIT WANNASRI²

¹Biology Program, Faculty of Science and Technology, Phetchabun Rajabhat University, Phetchabun, Thailand

²Education Science Program, Faculty of Science and Technology, Phetchabun Rajabhat University, Phetchabun, Thailand

Diserahkan: 26 Januari 2016/Diterima: 15 November 2016

ABSTRACT

The biological aspects of Channa limbata were studied between November 2013 and October 2014. A total of 346 fish specimens, 185 male and 161 female, were collected from Ta Bo, Huai Yai Wildlife Sanctuary, Phetchabun Province, Thailand. Specimens range from 7.3-17.2 cm in length with body weight 8-31 g; sex ratio between males and females was 1: 0.7. The length (L), weight (W) relationship for mixed sexes was W = 0.2064 L^1.85 (R²=0.90). Gonadosomatic indices for males and females were measured monthly and varied from 0.21-0.65%  and 1.96-3.74%, respectively. Condition factors for males and females ranged between 0.54 - 2.20 and 0.58 - 2.72, respectively, with fecundity range 956 to 4,652 eggs in females. Fecundity (F) to weight relationship was F = 189.53 W^0.59 (R² = 0.71) and fecundity to length relationship was F = 68.82 L^1.15 (R² = 0.77). The ratio between the intestine length and total length was 1:2, indicating that C. limbata was a carnivorous feeder. Analysis of the stomach contents gave 84% insects and 16% aquatic weed. These results can be applied to conserve efforts to prevent the extinction of C. limbata in protected areas.

Keywords: Biological aspects; Channa limbata; fecundity; gonadosomatic index; length- weight relationship

ABSTRAK

Aspek biologi bagi Channa limbata telah dikaji antara November 2013 dan 2014 Oktober. Sejumlah 346 spesimen ikan, 185 jantan dan 161 betina telah diambil dari suaka hidupan liar Ta Bo - Huai Yai, Wilayah Phetchabun, Thailand. Julat spesimen adalah daripada 7.3-17.2 cm panjang dengan berat badan 8-31 g; nisbah jantina antara jantan dan betina adalah 1: 0.7. Hubungan panjang (L), berat badan (W) untuk jantina campuran adalah W=0.2064 L^1.85 (R²=0.90). Indeks gonadosomatik bagi jantan dan betina telah dikira secara bulanan dan berbeza-beza masing-masing dari 0.21- 0.65% dan 1.96-3.74%.  Faktor keadaan bagi jantan dan betina adalah dalam lingkungan antara 0.54-2.20 dan 0.58-2.72, masing-masing dengan julat kesuburan 956 untuk 4,652 telur betina. Kesuburan (F) kepada hubungan berat adalah F = 189.53 W^0.59 (R² = 0.71) dan kesuburan kepada hubungan panjang F = 68.82 L^1.15 (R² = 0.77). Nisbah antara panjang usus dan jumlah panjang adalah 1:2 yang menunjukkan bahawa C. limbata adalah merupakan pembekal karnivor. Analisis kandungan perut memberikan 84% serangga dan rumpai akuatik 16%. Keputusan ini boleh digunakan untuk usaha pemuliharaan dalam mencegah kepupusan C. limbata di kawasan pemeliharaan.

Kata kunci: Aspek biologi; Channa limbata; hubungan panjang-berat; indeks gonadosomatik; kesuburan

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