Nutritional enrichment of rotifer Brachionus plicatilis and its effect on clownfish larvae Amphiprion clarkii (Bennett, 1830)


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Authors

  • Swagat Ghosh Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University Parangipettai - 608 502, Tamil Nadu, India Sasya Shyamala Krishi Vigyan Kendra, Indian Council of Agricultural Research (ICAR), Ramakrishna Mission Vivekananda University, Kolkata - 700 150, West Bengal, India
  • T. T. Ajith Kumar Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University Parangipettai - 608 502, Tamil Nadu, India ICAR-National Bureau of Fish Genetic Resources, Dillkhusha, Lucknow - 226 002, Uttar Pradesh, India
  • Bandana Das Ghosh 1Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University Parangipettai - 608 502, Tamil Nadu, India
  • N. C. Sahu Sasya Shyamala Krishi Vigyan Kendra, Indian Council of Agricultural Research (ICAR), Ramakrishna Mission Vivekananda University, Kolkata - 700 150, West Bengal, India

https://doi.org/10.21077/ijf.2017.64.special-issue.76274-32

Abstract

The present study, evaluated the effect of enrichment of the rotifer Brachionus plicatilis with the microalga, Nannochloroposis salina, amino acid derivative L-carnitine and commercially available S-presso (SELCO). The study also evaluated the effect of enriched rotifers in larval rearing of Amphiprion clarkii in terms of metamorphosis, pigmentation, growth and survival of larvae.. Rotifer production increased by 43, 39 and 54% respectively in B. plicatilis enriched with different concentrations of L-carnitine at 1, 10 and 100 mg l-1on day 4 (p<0.001) in comparison with the control group maintained on algal diet alone. Total unsaturated fatty acid (PUFA, HUFA and n-3 fatty acids) and the ratios of n-3/ n-6, DHA/EPA, EPA/AA were significantly higher (p<0.05) in the L-carnitine treated rotifers compared with the S-presso enriched as well N. salina enriched groups. Larvae of A. clarkii, fed with L-carnitine enriched rotifer achieved maximum growth of 56.92±0.2 mg; whereas, those fed S-presso treated rotifers attained only 48.74±1 mg. In L-carnitine enrichment; metamorphosis of clown fish larvae took only 10 days, while it took 11 days and 10 days respectively in S-presso and N. salina enrichment. In L-carnitine and S-presso enrichments, initial pigmentation of larvae was observed within first 3-4 days of culture, whereas it took 4-5 days in N. salina enrichment. L-carnitine enrichment resulted in the highest survival of 70%, while followed by N. salina with 68% and S-presso enriched group with 52%. The results indicate that L-carnitine could be a recommendable enrichment for increasing rotifer production as well as for clown fish larval culture.

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Submitted

2017-12-04

Published

2018-03-14

How to Cite

Ghosh, S., Ajith Kumar, T. T., Das Ghosh, B., & Sahu, N. C. (2018). Nutritional enrichment of rotifer Brachionus plicatilis and its effect on clownfish larvae Amphiprion clarkii (Bennett, 1830). Indian Journal of Fisheries, 64. https://doi.org/10.21077/ijf.2017.64.special-issue.76274-32