Length-weight length-length relationships and condition factors of three schibid catfishes from the Padma River Northwestern Bangladesh

Hossain Md. Yeamin, . Length-weight length-length relationships and condition factors of three schibid catfishes from the Padma River Northwestern Bangladesh. pp. 329-339. ISSN 0116-6514

The present study describes the length-weight (LWR) and length-length (LLR) relationships as well as the condition factors of the three important Schibid catfishes from the Padma River northwestern Bangladesh namely Ailia coila (Hamilton 1822) Eutropiichthys vacha (Hamilton 1822) and Neotropius atherinoides (Bloch 1794). A total of 347 specimens were caught using traditional fishing gears from March 2006 to February 2007. For each individual the total (TL) fork (FL) and standard (SL) lengths were measured using digital slide calipers. Individual body weight (BW) was also taken through a digital balance. The coefficient b of the LWR was close to the isometric value (b 3.000) in A. coila although it suggested negative allometric growth in E. vacha (b 2.980) and N. atherinoides (b 2.900). The results also indicated that the LLRs were highly correlated (r 0.914; P 0.01). The equations of the condition factors for each species were best expressed by K 100(BW/ (TL3.000) for A. coila K 100 (BW/(TL3.000) for E. vacha and Kn BW/(0.095TL2.899 and K 100 (BW/(TL3.000) for N. atherinoides. This study presents for the first time results on the total length-body weight relationships and on the condition factors of these catfishes from the Padma River.

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Abstract

The present study describes the length-weight (LWR) and length-length (LLR) relationships as well as the condition factors of the three important Schibid catfishes from the Padma River northwestern Bangladesh namely Ailia coila (Hamilton 1822) Eutropiichthys vacha (Hamilton 1822) and Neotropius atherinoides (Bloch 1794). A total of 347 specimens were caught using traditional fishing gears from March 2006 to February 2007. For each individual the total (TL) fork (FL) and standard (SL) lengths were measured using digital slide calipers. Individual body weight (BW) was also taken through a digital balance. The coefficient b of the LWR was close to the isometric value (b 3.000) in A. coila although it suggested negative allometric growth in E. vacha (b 2.980) and N. atherinoides (b 2.900). The results also indicated that the LLRs were highly correlated (r 0.914; P 0.01). The equations of the condition factors for each species were best expressed by K 100(BW/ (TL3.000) for A. coila K 100 (BW/(TL3.000) for E. vacha and Kn BW/(0.095TL2.899 and K 100 (BW/(TL3.000) for N. atherinoides. This study presents for the first time results on the total length-body weight relationships and on the condition factors of these catfishes from the Padma River.

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Item Type:	Article
AGROVOC Term:	Freshwater catfish
AGROVOC Term:	Ailia coila
AGROVOC Term:	Eutropiichthys vacha
AGROVOC Term:	Fishing gear
AGROVOC Term:	Body weight
AGROVOC Term:	Freshwater fishes
AGROVOC Term:	Siluriformes
AGROVOC Term:	Traps
AGROVOC Term:	Length
AGROVOC Term:	Body measurements
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23712

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