Stock assessment of the Indian scad, <i style="">Decapterus russelli</i> (Ruppell, 1830) from Mumbai waters
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive InfoField | Value | |
Creator |
Poojary, Nalini
Tiwari, L.R. Chakraborty, S.K. |
|
Date |
2011-11-18T04:29:37Z
2011-11-18T04:29:37Z 2011-10 |
|
Identifier |
0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/13080 |
|
Description |
680-686
Present study consists the Growth, mortality and the stock assessment of <i style="">Decapterus russelli</i> . ‘L<sub>∞</sub>’ was estimated as 277 mm and ‘K’ as 1.237/year. The t<sub>o</sub><b style=""> </b>estimated by VBGF plot was – 0.3443 year. Growth in length of <i style="">D. russelli</i> described following von Bertalanffy growth equation as, L<sub>t</sub> = 277[ 1-e <sup>-1.237{t-(-0.3443)}</sup>]. Longevity was estimated to be 2.42 years. Total mortality rate (Z), natural mortality rate (M) and fishing mortality (F) were estimated to be 6.66, 2.1 and 4.56 respectively. In this study, Z/K was found to be 5.38 indicating that the stock of <i style="">D. russelli</i> is presently mortality dominated in Mumbai waters. Exploitation rate (U) was calculated as 0.6838 and the Exploitation ratio (F/Z) as 0.6847. Thompson and Bell long-term prediction analysis indicated that there is no decline in yield of <i style="">D. russelli</i> even if the fishing effort is doubled. Present level of fishing has no deleterious effect on the fishery of <i style="">D. russelli</i> |
|
Language |
en_US
|
|
Publisher |
NISCAIR-CSIR, India
|
|
Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
|
|
Source |
IJMS Vol.40(5) [October 2011]
|
|
Subject |
<i style="">D. russelli</i>
Indian Scad Stock assessment Growth Mortality |
|
Title |
Stock assessment of the Indian scad, <i style="">Decapterus russelli</i> (Ruppell, 1830) from Mumbai waters
|
|
Type |
Article
|
|