BREEDING, AGE AND GROWTH OF THE FRESHWATER SHARK WALLAGO ATTU (BLOCH AND SCHNEIDER) FROM THE DHIR BEEL OF THE BRAHMAPUTRA BASIN, ASSAM, INDIA.
The Dhir becl, one of the major live becls of the Brahmaputra basin, Assam, has anarea of 689 ha and is situated in Dhubli district of Assam. The dominance of fresh·watershari<., Wal/ago attu (8.10%) in the becl is a striking feature. Restricted breeding of W. attu. once a year from June to Sept...
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fticar:oai:ojs3.epubs.icar.org.in:article/57539 2023-05-15T15:33:24+02:00 BREEDING, AGE AND GROWTH OF THE FRESHWATER SHARK WALLAGO ATTU (BLOCH AND SCHNEIDER) FROM THE DHIR BEEL OF THE BRAHMAPUTRA BASIN, ASSAM, INDIA. GOSWAMI, P. K. DEVARAJ, M. 2015-12-01 application/pdf https://epubs.icar.org.in/index.php/JIFA/article/view/57539 eng eng Indian Fisheries Association https://epubs.icar.org.in/index.php/JIFA/article/view/57539/24105 https://epubs.icar.org.in/index.php/JIFA/article/view/57539 Copyright (c) 2016 Indian Fisheries Association Journal of Indian Fisheries Association; Vol. 22 (1995) 0972-3854 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2015 fticar 2022-09-19T09:20:22Z The Dhir becl, one of the major live becls of the Brahmaputra basin, Assam, has anarea of 689 ha and is situated in Dhubli district of Assam. The dominance of fresh·watershari<., Wal/ago attu (8.10%) in the becl is a striking feature. Restricted breeding of W. attu. once a year from June to Septemebr ·was obsen'ed. The. mean obset'\'ed length was 37.5,65.0, 84.5 and 99.0 em in the 6th, 12th, 18th and 24th months of age respectively. The lengthgrowth coefficient (K), the asymptotic len!,Jfh (Loc ), and the arbitrary origin of the growthcurve (to), for W. attu were estimated to be 0.054484 per month, 136.16 em and 0.0355 monthrespectively. The calculated life span (Toe) of the fish is 123.86 months (about 10 years). Theweight growth parameters were estimated where the monthly growth coefficient (K), theas:vmptotic \Veight (Woc) and the arbitrary origin of' the growth cun'e (to) were found to be0.0743 j>er month, 7636,92 gram and 0.431908 month respectively. The length - weightrelationship follows the cube law Article in Journal/Newspaper Attu Indian Agricultural Research Journals ( Indian Council of Agricultural Research) |
institution |
Open Polar |
collection |
Indian Agricultural Research Journals ( Indian Council of Agricultural Research) |
op_collection_id |
fticar |
language |
English |
description |
The Dhir becl, one of the major live becls of the Brahmaputra basin, Assam, has anarea of 689 ha and is situated in Dhubli district of Assam. The dominance of fresh·watershari<., Wal/ago attu (8.10%) in the becl is a striking feature. Restricted breeding of W. attu. once a year from June to Septemebr ·was obsen'ed. The. mean obset'\'ed length was 37.5,65.0, 84.5 and 99.0 em in the 6th, 12th, 18th and 24th months of age respectively. The lengthgrowth coefficient (K), the asymptotic len!,Jfh (Loc ), and the arbitrary origin of the growthcurve (to), for W. attu were estimated to be 0.054484 per month, 136.16 em and 0.0355 monthrespectively. The calculated life span (Toe) of the fish is 123.86 months (about 10 years). Theweight growth parameters were estimated where the monthly growth coefficient (K), theas:vmptotic \Veight (Woc) and the arbitrary origin of' the growth cun'e (to) were found to be0.0743 j>er month, 7636,92 gram and 0.431908 month respectively. The length - weightrelationship follows the cube law |
format |
Article in Journal/Newspaper |
author |
GOSWAMI, P. K. DEVARAJ, M. |
spellingShingle |
GOSWAMI, P. K. DEVARAJ, M. BREEDING, AGE AND GROWTH OF THE FRESHWATER SHARK WALLAGO ATTU (BLOCH AND SCHNEIDER) FROM THE DHIR BEEL OF THE BRAHMAPUTRA BASIN, ASSAM, INDIA. |
author_facet |
GOSWAMI, P. K. DEVARAJ, M. |
author_sort |
GOSWAMI, P. K. |
title |
BREEDING, AGE AND GROWTH OF THE FRESHWATER SHARK WALLAGO ATTU (BLOCH AND SCHNEIDER) FROM THE DHIR BEEL OF THE BRAHMAPUTRA BASIN, ASSAM, INDIA. |
title_short |
BREEDING, AGE AND GROWTH OF THE FRESHWATER SHARK WALLAGO ATTU (BLOCH AND SCHNEIDER) FROM THE DHIR BEEL OF THE BRAHMAPUTRA BASIN, ASSAM, INDIA. |
title_full |
BREEDING, AGE AND GROWTH OF THE FRESHWATER SHARK WALLAGO ATTU (BLOCH AND SCHNEIDER) FROM THE DHIR BEEL OF THE BRAHMAPUTRA BASIN, ASSAM, INDIA. |
title_fullStr |
BREEDING, AGE AND GROWTH OF THE FRESHWATER SHARK WALLAGO ATTU (BLOCH AND SCHNEIDER) FROM THE DHIR BEEL OF THE BRAHMAPUTRA BASIN, ASSAM, INDIA. |
title_full_unstemmed |
BREEDING, AGE AND GROWTH OF THE FRESHWATER SHARK WALLAGO ATTU (BLOCH AND SCHNEIDER) FROM THE DHIR BEEL OF THE BRAHMAPUTRA BASIN, ASSAM, INDIA. |
title_sort |
breeding, age and growth of the freshwater shark wallago attu (bloch and schneider) from the dhir beel of the brahmaputra basin, assam, india. |
publisher |
Indian Fisheries Association |
publishDate |
2015 |
url |
https://epubs.icar.org.in/index.php/JIFA/article/view/57539 |
genre |
Attu |
genre_facet |
Attu |
op_source |
Journal of Indian Fisheries Association; Vol. 22 (1995) 0972-3854 |
op_relation |
https://epubs.icar.org.in/index.php/JIFA/article/view/57539/24105 https://epubs.icar.org.in/index.php/JIFA/article/view/57539 |
op_rights |
Copyright (c) 2016 Indian Fisheries Association |
_version_ |
1766363912165392384 |