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Breeding, early development and larval rearing of cloudy damsel, Dascyllus carneus Fischer, 1885

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Title Breeding, early development and larval rearing of cloudy damsel, Dascyllus
carneus Fischer, 1885
Not Available
 
Creator Aneesh,K S
Abraham,Mijo V
Darsana,S
Santhosh,B
Anil,M K
Gopalakrishnan,A
Unnikrishnan,C
Kingsly,H Jose
Udayakumar,A
Muhammed Anzeer,F
Yoyak,Greever
 
Subject Marine ornamental fishes
Pomacentridae
Larval rearing
Parvocalanus crassirostris
Copepods
Mouth gape
 
Description Not Available
As the demand for marine ornamental fish is ever increasing, the industry largely relies on collections from
natural habitat due to insufficient breeding and seed production technologies. Fishes of the family
Pomacentridae are popular in marine aquaria throughout the world. Among these, damsel fishes of the genus
Dascyllus has high demand and are mostly collected from the wild. The present study forms the first-ever report
on successful breeding and larval development of Cloudy Damsel (Dascyllus carneus Fischer, 1885). Though there
are a few reports on breeding of other species of Dascyllus, there has been no report on the complete larval
development of any of the species in this genus. This forms the first description of early larval development of a
Dascyllus species. Using the copepod Parvocalanus crassirostris as first feed the larval rearing was done. Successful
breeding and larval development were achieved from the wild-caught broodstock of D. carneus at Vizhinjam
Research Centre of ICAR-CMFRI, India. Brood stock from the wild took 4 months to spawn, laid 6500–10,500
eggs per spawning and hatching rate ranged from 90.6 to 98.81%. Newly hatched larvae were the smallest
among all the reported larvae of pomacentrid fishes and measured 1.95 ± 0.14 mm in total length. Yolk reserve
was completely absorbed within 72 h of hatching. Preflexion stage is from 4 to 10 dph, flexion stage is from 11 to
12 dph and postflexion period is 13–15 dph. Larvae accepted only copepod naupliar stages as first feed and
calanoid copepod P. crassirostris alone was fed until 25 dph. Larvae settled from planktonic stage in 22–23 days
and all the larvae metamorphosed into juveniles by 50 dph. The egg development, larval development and larval
pigmentation up to 50 dph has been described. The feeding protocols and feed size preference in relation to their
age or mouth gape, the gut contents and mouth gape of the larvae caught from a feed trial with surplus copepods
of all stages were analysed at regular intervals. Larvae preferred larger stages of copepods in later stages of their
development. Finally larval feeding protocols were modified accordingly and better survival was observed. A
final feeding regime has been developed and a strategy for the consistent hatchery production of this species was
achieved. Different stages of copepod P. crassirostris were used till the settlement of planktonic stage of larvae
and Artemia nauplii were used from 25 dph. The larvae were completely weaned to artificial diet from 50 dph.
Not Available
 
Date 2021-09-18T04:00:38Z
2021-09-18T04:00:38Z
2019
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/64263
 
Language English
 
Relation Not Available
 
Publisher Elsevier