Life history traits of the critically endangered catfish eutropiichthys vacha (Hamilton 1822) in the Jamuna (Brahmaputra River Distributary) River, Northern Bangladesh

The critically endangered catfish Eutropiichthys vacha (Hamilton 1822) is one of the commercially high nutritional valuable food fish in Asian countries, but the natural populations are seriously decreasing due to high fishing pressure, leading to an alarming condition and deserving of high conserva...

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Main Authors:	Md. Yeamin Hossain, Md. Mosaddequr Rahman, Md. Abu Sayed Jewel, Md. Akhtar Hossain, Ferdous Ahamed, Anannya Sen Tumpa, M. Abdallah, Elgorban, Ohtomi, Jun
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2013
Online Access:	http://journalarticle.ukm.my/5969/ http://journalarticle.ukm.my/5969/ http://journalarticle.ukm.my/5969/1/02%2520Md.%2520Yeamin.pdf

id	ukm-5969
recordtype	eprints
spelling	ukm-59692016-12-14T06:39:59Z http://journalarticle.ukm.my/5969/ Life history traits of the critically endangered catfish eutropiichthys vacha (Hamilton 1822) in the Jamuna (Brahmaputra River Distributary) River, Northern Bangladesh Md. Yeamin Hossain, Md. Mosaddequr Rahman,, Md. Abu Sayed Jewel, Md. Akhtar Hossain, Ferdous Ahamed, Anannya Sen Tumpa, M. Abdallah, Elgorban Ohtomi, Jun, The critically endangered catfish Eutropiichthys vacha (Hamilton 1822) is one of the commercially high nutritional valuable food fish in Asian countries, but the natural populations are seriously decreasing due to high fishing pressure, leading to an alarming condition and deserving of high conservation importance. Our study describes some biological parameters, including sex ratio, length-frequency distribution (LFD), length-weight relationships (LWRs), length-length relationships (LLRs), condition factors (Allometric, KA; Fulton’s, KF; Relative condition, KR; Relative weight, WR) and form factor (a3.0) of E. vacha in the Jamuna (Brahmaputra River distributary) River, northern Bangladesh. A total of 350 specimens ranging from 8.01-16.95 cm TL (total length) and 1.70-30.38 g BW (body weight) were analyzed in this study. Sampling was done using traditional fishing gears during March 2010 to February 2011. The overall sex ratio showed no significant differences from the expected value of 1:1 (χ2=2.57, p>0.05), and there was no significant difference in the LFD between the sexes (p=0.38). The allometric coefficient b for the LWR indicated isometric growth (~3.00) in males and combined sexes, but negative allometric growth (<3.00) in females. The results further indicated that the LLRs were highly correlated (r2 > 0.997; p<0.001). KR showed significant variations (F=65.11; p<0.01) between male and female; whereas, KF was not significantly different between the sexes (p=0.64). Also, WR was significantly different from 100 for both sexes (p<0.01), indicating the imbalance habitat with food availability relative to the presence of predators for E. vacha. The estimated values of a3.0 were as 0.0060, 0.005 and 0.0054 for males, females and combined sexes of E. vacha. This study reported the first complete and comprehensive description of life-history traits for E. vacha from Bangladeshi waters. These results should be useful for the sustainable conservation of this critically endangered fishery in Bangladesh and neighboring countries. Universiti Kebangsaan Malaysia 2013-03 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/5969/1/02%2520Md.%2520Yeamin.pdf Md. Yeamin Hossain, and Md. Mosaddequr Rahman,, and Md. Abu Sayed Jewel, and Md. Akhtar Hossain, and Ferdous Ahamed, and Anannya Sen Tumpa, and M. Abdallah, Elgorban and Ohtomi, Jun, (2013) Life history traits of the critically endangered catfish eutropiichthys vacha (Hamilton 1822) in the Jamuna (Brahmaputra River Distributary) River, Northern Bangladesh. Sains Malaysiana, 42 (3). 265 -277. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	The critically endangered catfish Eutropiichthys vacha (Hamilton 1822) is one of the commercially high nutritional valuable food fish in Asian countries, but the natural populations are seriously decreasing due to high fishing pressure, leading to an alarming condition and deserving of high conservation importance. Our study describes some biological parameters, including sex ratio, length-frequency distribution (LFD), length-weight relationships (LWRs), length-length relationships (LLRs), condition factors (Allometric, KA; Fulton’s, KF; Relative condition, KR; Relative weight, WR) and form factor (a3.0) of E. vacha in the Jamuna (Brahmaputra River distributary) River, northern Bangladesh. A total of 350 specimens ranging from 8.01-16.95 cm TL (total length) and 1.70-30.38 g BW (body weight) were analyzed in this study. Sampling was done using traditional fishing gears during March 2010 to February 2011. The overall sex ratio showed no significant differences from the expected value of 1:1 (χ2=2.57, p>0.05), and there was no significant difference in the LFD between the sexes (p=0.38). The allometric coefficient b for the LWR indicated isometric growth (~3.00) in males and combined sexes, but negative allometric growth (<3.00) in females. The results further indicated that the LLRs were highly correlated (r2 > 0.997; p<0.001). KR showed significant variations (F=65.11; p<0.01) between male and female; whereas, KF was not significantly different between the sexes (p=0.64). Also, WR was significantly different from 100 for both sexes (p<0.01), indicating the imbalance habitat with food availability relative to the presence of predators for E. vacha. The estimated values of a3.0 were as 0.0060, 0.005 and 0.0054 for males, females and combined sexes of E. vacha. This study reported the first complete and comprehensive description of life-history traits for E. vacha from Bangladeshi waters. These results should be useful for the sustainable conservation of this critically endangered fishery in Bangladesh and neighboring countries.
format	Article
author	Md. Yeamin Hossain, Md. Mosaddequr Rahman,, Md. Abu Sayed Jewel, Md. Akhtar Hossain, Ferdous Ahamed, Anannya Sen Tumpa, M. Abdallah, Elgorban Ohtomi, Jun,
spellingShingle	Md. Yeamin Hossain, Md. Mosaddequr Rahman,, Md. Abu Sayed Jewel, Md. Akhtar Hossain, Ferdous Ahamed, Anannya Sen Tumpa, M. Abdallah, Elgorban Ohtomi, Jun, Life history traits of the critically endangered catfish eutropiichthys vacha (Hamilton 1822) in the Jamuna (Brahmaputra River Distributary) River, Northern Bangladesh
author_facet	Md. Yeamin Hossain, Md. Mosaddequr Rahman,, Md. Abu Sayed Jewel, Md. Akhtar Hossain, Ferdous Ahamed, Anannya Sen Tumpa, M. Abdallah, Elgorban Ohtomi, Jun,
author_sort	Md. Yeamin Hossain,
title	Life history traits of the critically endangered catfish eutropiichthys vacha (Hamilton 1822) in the Jamuna (Brahmaputra River Distributary) River, Northern Bangladesh
title_short	Life history traits of the critically endangered catfish eutropiichthys vacha (Hamilton 1822) in the Jamuna (Brahmaputra River Distributary) River, Northern Bangladesh
title_full	Life history traits of the critically endangered catfish eutropiichthys vacha (Hamilton 1822) in the Jamuna (Brahmaputra River Distributary) River, Northern Bangladesh
title_fullStr	Life history traits of the critically endangered catfish eutropiichthys vacha (Hamilton 1822) in the Jamuna (Brahmaputra River Distributary) River, Northern Bangladesh
title_full_unstemmed	Life history traits of the critically endangered catfish eutropiichthys vacha (Hamilton 1822) in the Jamuna (Brahmaputra River Distributary) River, Northern Bangladesh
title_sort	life history traits of the critically endangered catfish eutropiichthys vacha (hamilton 1822) in the jamuna (brahmaputra river distributary) river, northern bangladesh
publisher	Universiti Kebangsaan Malaysia
publishDate	2013
url	http://journalarticle.ukm.my/5969/ http://journalarticle.ukm.my/5969/ http://journalarticle.ukm.my/5969/1/02%2520Md.%2520Yeamin.pdf
first_indexed	2023-09-18T19:45:36Z
last_indexed	2023-09-18T19:45:36Z
_version_	1777405878434004992

Life history traits of the critically endangered catfish eutropiichthys vacha (Hamilton 1822) in the Jamuna (Brahmaputra River Distributary) River, Northern Bangladesh

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