Record Details

Fishery, reproductive biology and diet characteristics of Bombay duck Harpadon nehereus from the Saurashtra coast

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Fishery, reproductive biology and diet characteristics of Bombay duck Harpadon nehereus from the Saurashtra coast
Not Available
 
Creator Ghosh,Shubhadeep
 
Subject Bombay duck
Fishery
Spawning
Food and feeding
Dol nets
Saurashtra
 
Description Not Available
Fishery, reproductive biology and diet characteristics of Bombay duck Harpadon nehereus landed by dol netters along the Saurashtra coast was studied during 2006 – 2009. Annual average catch was 25,479 t with catch rate of 378.6 kg unit-1 forming 22.44% of the total dol net catches. Bulk of the catch was landed during September – January and in May. Length weight relation differed significantly between males, females and indeterminates. Growth was isometric in males but allometric in females and indeterminates. Overall sex ratio was 1.05 and length at first maturity was 214.5 mm. Gravid and ripe females were observed throughout the year with peak occurrence during April – June. Mature ovaries contained immature (0.2 - 0.39 mm), maturing (0.5 - 0.69 mm) and mature ova (0.8 - 0.89 mm). Total fecundity was between 8467 and 102079. Non penaeid prawns viz., Acetes and Nematopalaemon tenuipes was the most important food item in the diet followed by sciaenids, unicorn cod and juveniles of Bombay duck. Fishes with empty stomachs were encountered in high numbers. Juveniles fed mostly on non penaeid prawns while adults preferred both finfishes and prawns. Feeding intensity was more in adults and less in juveniles. The reproductive biology and food and feeding were found to vary significantly between years.
Not Available
 
Date 2021-09-17T04:07:12Z
2021-09-17T04:07:12Z
2014
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/63515
 
Language English
 
Relation Not Available