Record Details

Repetitive maturation and spawning of the green tiger prawn Penaeus semisulcatus by environmental regulation in closed seawater recirculation systems

CMFRI Repository

View Archive Info
 
 
Field Value
 
Relation http://eprints.cmfri.org.in/1957/
 
Title Repetitive maturation and spawning of the green tiger prawn Penaeus semisulcatus by environmental regulation in closed seawater recirculation systems
 
Creator Radhakrishnan, E V
Maheswarudu, G
Arputharaj, M R
Ramakrishnan, A
 
Subject Prawn and Prawn fisheries
 
Description Maturation and repetitive spawning of the green tiger prawn Penaeus semisulcatus were achieved by pH regulation and on feeding the shrimps with clams, squid and the oligochaete worm Pontodrilus bemudensis. Females and males stocked in a recirculation system at a ratio of 1:l and exposed to an average light intensity of 500 lux spawned an average 3 times in each moult cycle. In Experiment 2 lasting 60 days, 80% of the females responded, whereas in Experiment3 lasting 90 days 60% of the shrimps matured and spawned viable eggs. Spawning interval varied from 4 to 7 days. Average number of eggs produced by a single female ranged from 15- 20 lakhs from 11-13 spawnings. Though egg production was consistent upto three consecutive
spawnings, number of spawnings was decreased beyond moult 3 with no reduction either in spawn size or percent hatch of the eggs. Considerable variability in egg production between spawns within a moult cycle and between spawns of consecutive moult cycles were observed. However, no significant difference in percent egg hatch between the spawns in a moult cycle (P
 
Publisher MBAI
 
Date 2000
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/1957/1/Radhakrishnan_91-100.pdf
Radhakrishnan, E V and Maheswarudu, G and Arputharaj, M R and Ramakrishnan, A (2000) Repetitive maturation and spawning of the green tiger prawn Penaeus semisulcatus by environmental regulation in closed seawater recirculation systems. Journal of the Marine Biological Association of India, 42 (1 & 2). pp. 91-100.