effects of rotifers, brine shrimps and cultured copepods on survival and
growth of newborn seahorse Hippocampus kuda
Teh1, Mohd. S. Kamarudin1*, N. Romano1, A.
Arshad1, 2 and N.L.W.S. Wong1
Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, 43400
Serdang, Selangor, Malaysia
2Centre of Marine
Science, Universiti Putra Malaysia, 71050 Port Dickson, Negeri Sembilan,
Author E-mail: firstname.lastname@example.org
Newborn yellow seahorse
Paper received : 21.11.2016
Revised received : 06.01.2017
Re-revised received :
Accepted : 28.12.2017
Aim: Low survival
remains a significant obstacle during the early culture of Hippocampus
kuda. To potentially develop a better feeding regime to newborn H.
kuda without relying on wild zooplanktons, two separate feeding trials
were performed using cultured live food items.
Methodology: Newborn H.
kuda derived from the wild broodstock were reared in the captive
conditions using different feeding regimes consisting of rotifers, Artemia
and/or copepods Oithona simplex. The survival rate and growth
performance were determined.
Results: In the first
experiment, despite consumption of both rotifers and Artemia, a total
mortality was observed among seahorses on 3rd and 5th
day-after-birth (DAB), when only rotifers or Artemia were provided,
respectively. Seahorses fed the mixed live foods have 60% survival with 6.3%
per day specific growth rate (SGR). In the second experiment, the
introduction of copepods had further improved the SGR of H. kuda to
8.1% d-1 compared to 6.8% d-1 without copepods,
although the survival was similar.
Interpretation: Overall, the
results indicated that in terms of survival, a feeding regime consisting of a
rotifer and Artemia nauplii mixture was suitable for H. kuda
juveniles during the first 10 days. To enhance growth, copepods O. simplex
should be included in its diet since this live food was superior over
enriched Artemia metanauplii. These findings are important to further
develop an optimum feeding regime from reliable source of live foods for
early culture of H. kuda.
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