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Fishery, biology and stock assessment of spotted seer, Scomberomorus guttatus (Bloch & Schneider) off Andhra Pradesh

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Title Fishery, biology and stock
assessment of spotted seer,
Scomberomorus guttatus (Bloch
& Schneider) off Andhra Pradesh
Not Available
 
Creator Ghosh,Shubhadeep
Sreeramulu,K
Rao,M V Hanumantha
Satish Kumar,M
Uma Mahesh,V
 
Subject Fishery, biology, stock structure, Scomberomorus guttatus,
Andhra Pradesh
 
Description Not Available
The fishery, biology and stock of the spotted seerfish, Scomberomorus
guttatus (Bloch & Schneider) along Andhra Pradesh was studied during
2012-2014. The annual average landing of spotted seer during the
period along Andhra coast was 2,614 t. Major contributors were
trawlnets-1,104 t (42.2%) and gillnets-950 t (36.3%). Catches were
higher during August-December. Length-weight relationship varied
significantly between males, females and indeterminates. Growth was
isometric in males and allometric in females and indeterminates. Overall
sex ratio was 1:1.87. Length at first maturity was 38.9 cm. Peak
spawning was observed during November-April. Higher Gonadosomatic
index coincided with periods of peak spawning. Mature
ovaries contained both maturing (0.41 mm-0.70 mm) and matured
(0.71 mm-0.90 mm) ova. von Bertalanffy growth equation was
Lt = 71.98 [1-e -0.23 (t + 0.0722)]. Natural mortality, fishing mortality and total
mortality were 0.54, 0.49 and 1.03. Exploitation ratio was 0.48. Annual
total stocks, biomass and Maximum Sustainable Yield were 8,546 t,
5,335 t and 2,747 t. A minor increase in yield and yield/recruit is
possible by increasing the present level of fishing by 20%.
Not Available
 
Date 2021-09-17T07:59:40Z
2021-09-17T07:59:40Z
2017
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/63861
 
Language English
 
Relation Not Available
 
Publisher Marine Biological Association of India