Establishing larval feeding regimens for the Forktail Blenny Meiacanthus atrodorsalis (Gunther, 1877): effects of Artemia strain, time of prey switch and co-feeding period

Moorhead, Jonathan A., and Zeng, Chaoshu (2017) Establishing larval feeding regimens for the Forktail Blenny Meiacanthus atrodorsalis (Gunther, 1877): effects of Artemia strain, time of prey switch and co-feeding period. Aquaculture Research, 48 (8). pp. 4321-4333.

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Abstract

This study aimed to establish feeding strategies covering the whole larval period of the forktail blenny, Meiacanthus atrodorsalis, based on the standard hatchery feeds of rotifers and Artemia. Three purposely designed experiments were conducted to determine the appropriate times and techniques to transition larvae from rotifers onto Artemia nauplii of a Great Salt Lake (GSL) strain, and a specialty AF strain, as well as subsequent transition onto enriched metanauplii of GSL Artemia. With a 3-day co-feeding period, larvae adapted well to a transition from rotifers to newly hatched GSL Artemia nauplii as early as 5 days posthatching (DPH), and as early as 3 DPH when fed the smaller AF Artemia nauplii. However, prolonging the rotifer-feeding period up to 11 DPH did not negatively affect survival. Larvae fed Artemia nauplii of the AF strain showed 17-21% higher survival, 24-33% greater standard length and body depth, and 91-200% greater dry weight, after 20days relative to those fed nauplii of the GSL strain. Meanwhile, enriched Artemia metanauplii of the GSL strain were shown to be an acceptable alternative to AF Artemia nauplii for later larvae, producing similar survival and growth when introduced from 8 DPH. Based on our findings, we recommend feeding M. atrodorsalis larvae rotifers as a first food between 0 and 2 DPH, introducing AF Artemia nauplii from 3 DPH, followed by enriched GSL Artemia metanauplii from 8 DPH onward, with a 3-day co-feeding period between each prey change.

Item ID: 50330
Item Type: Article (Research - C1)
ISSN: 1365-2109
Keywords: larval culture, marine ornamentals, blenny, feeding regime, live prey, Artemia strain
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A version of this publication was included as Chapter 5 of the following PhD thesis: Moorhead, Jonathan Allyn (2017) Broodstock management, development of rearing systems, and feeding regimes for larvae of the forktail blenny, Meiacanthus atrodorsalis. PhD thesis, James Cook University, which is available Open Access in ResearchOnline@JCU. Please see the Related URLs for access.

Date Deposited: 20 Sep 2017 07:56
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070401 Aquaculture @ 85%
06 BIOLOGICAL SCIENCES > 0608 Zoology > 060809 Vertebrate Biology @ 15%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830102 Aquaculture Fin Fish (excl. Tuna) @ 100%
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