Record Details

Broodstock development and controlled breeding of cobia Rachycentron canadum (Linnaeus 1766) from Indian seas

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Broodstock development and controlled breeding of cobia Rachycentron
canadum (Linnaeus 1766) from Indian seas
Not Available
 
Creator Maharshi,V Ashok
Palanichamy,S
Ramamoorthy,N
Kalidas,C
Sakthivel,M
Tamilmani,G
Nazar,A K A
Gopakumar,G
Rao,K Srinivasa
Rao,G Syda
 
Subject Broodstock
Cobia
Induced breeding
Rachycentron canadum Sea-cage
Spawning
 
Description Not Available
Cobia, Rachycentron canadum has emerged as one of the topmost finfish species for mariculture. In India, cobia broodstock
was developed and induced breeding was achieved for the first time at Mandapam Regional Centre of the Central Marine
Fisheries Research Institute (CMFRI). The broodstock was developed in sea cages of 6 m diameter and 3.5 m depth. Sexes
were separated about two months prior to the onset of breeding season and stocked in separate cages. During March 2010, a
female with intra-ovarian egg diameter of 700 μ along with two males were selected for induced spawning. The brooders
were induced with human chorionic gonadotropin (hCG) at doses of 500 IU per kg body weight for female and 250 IU per
kg body weight for males. Spawning was noted after 39 h of intra-muscular injection. The total eggs spawned were
estimated as 2.1 million. About 90% fertilization was recorded (fertilized eggs amounted to 1.9 million). The eggs were
collected using a 500 μ mesh net and stocked in incubation tanks at varying densities. The eggs hatched after 22 h of
incubation at a temperature range of 28-30 ºC. The percentage of hatching was 80% and the total number of newly hatched
larvae was estimated as 1.5 million
Not Available
 
Date 2021-09-16T05:54:26Z
2021-09-16T05:54:26Z
2011
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/62748
 
Language English
 
Relation Not Available