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(2021) Development of indoor grow-out practices for polychaete, Marphysa gravelyi with a note on biochemical composition. Aquaculture Research. :1–10.DOI: 10.1111/are.15266

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Title (2021) Development of indoor grow-out practices for polychaete, Marphysa gravelyi with a note on biochemical composition. Aquaculture Research. :1–10.DOI: 10.1111/are.15266
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Creator Not Available
Kannappan S, Sivagnanam S, Jithendran KP, Ezhil Praveena P, Balasubramanian CP, Vijayan KK
 
Subject Culture of Polychaetes , FRP tanks
 
Description Polychaetes are multi-segmented worms, being exploited from the backwaters for
shrimp hatcheries to be used as a maturation diet for shrimp broodstocks. Non selective collection of polychaete worms poses a severe hazard to the ecosystem;
hence, a grow-out system was developed for Marphysa gravelyi. Adult, M. gravelyi of
17 ± 0.4 cm length (n = 40) when reared in 100 L tanks, produced 1800 numbers of ju veniles having an average length of 7 ± 0.2 cm with 80% survival in 4 months. The ju veniles (7 ± 0.2 cm (n = 50)) worms were reared again in 25 L tubs from which 45 adults
(20 ± 0.3 cm) could be produced in 4 months with 90% survival. Juvenile, M. gravelyi
(n = 500) when mass-reared in 1000 L FRP tanks by feeding Skeletonema costatum
(106 CFU/ml), produced 400 adults (20 ± 0.2 cm) as biomass with 80% survival in
4 months. The nutrient profile of adult M. gravelyi revealed protein, carbohydrate and
lipid to be 33, 14 and 40 g % respectively. Crude M. gravelyi extract showed the high est bacterial inhibition on Staphylococcus aureus (18 ± 0.3 mm) and lowest on Bacillus
subtilis (14 ± 0.2 mm). The present study revealed that growing polychaete worms in
a controlled condition is advantageous, compared to collection of polychaete worms
from wild which might seriously deplete their natural stocks, and cause physical dis turbance of soil exposing heavy metals with the release of ammonia, and phosphorus
compounds leading to eutrophication.
 
Date 2022-05-25T10:49:57Z
2022-05-25T10:49:57Z
2021-04-01
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/72396
 
Language English
 
Relation Not Available;
 
Publisher Not Available