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Rearing silver therapon Leiopotherapon plumbeus (Teleostei: Terapontidae) larvae using euryhaline rotifers as starter food

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Date
2021-12
Author
Aya, Frolan ORCID
Nillasca, Vicar Stella N.
Garcia, Luis Maria ORCID
Page views
213
ASFA keyword
feeds ASFA
feeding ASFA
growth ASFA
larvae ASFA
feeding experiments ASFA
live feeds ASFA
water quality ASFA
AGROVOC keyword
first feeding
Teleostei
Terapontidae AGROVOC
Euryhaline
Taxonomic term
Terapontidae GBIF
Leiopotherapon plumbeus GBIF
Brachionus plicatilis GBIF
Artemia GBIF
Rotifera GBIF
Moina micrura GBIF
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Abstract
The silver therapon Leiopotherapon plumbeus is an important but dwindling freshwater food commodity in Philippine freshwater habitats. The influence of feeding regimes on growth performance and survival of first-feeding silver therapon larvae fed euryhaline rotifers (Brachionus rotundiformis and B. plicatilis) as starter food was examined. Larvae at 2 days post-hatch (DPH) (1.93 ± 0.07 mm; 200 larvae/basin) were initially reared on rotifers for 12 days followed by Artemia nauplii from 14 to 35 DPH as follows: (A) B. rotundiformis from 2-13 DPH; (B) B. rotundiformis from 2-7 DPH and Moina micrura from 8-13 DPH; and (C) B. plicatilis from 2-13 DPH. After 35 days of rearing, mean survival rates were significantly higher in larvae fed B. rotundiformis (69.2%) than those co-fed B. rotundiformis and M. micrura (34.6%) or B. plicatilis alone (26.3%). Higher ingestion rates were observed for B. rotundiformis-fed larvae (1.6 ± 0.5 to 4.4 ± 0.5 ind larvae-1) than larvae fed B. plicatilis (0.0 to 3.2 ± 0.8 ind larvae-1) during the critical initial feeding stage. However, larvae fed B. plicatilis (20.75 ± 0.48 mm) were significantly longer than those fed B. rotundiformis alone (15.62 ± 0.40 mm) or co-fed B. rotundiformis and M. micrura (18.57 ± 0.58 mm). The fastest growth was observed in larvae fed B. plicatilis, with length increment (LI) and specific growth rate (SGR) of 18.8 mm and 6.8% day-1, respectively. Eye diameter, head length, snout length and pre-anal length increased but were not affected when larvae were fed two rotifer species. These results demonstrate that feeding euryhaline rotifer B. rotundiformis from 2 to 13 DPH followed by Artemia is a suitable feeding regime for better survival of silver therapon larvae under laboratory rearing conditions.
URI
http://hdl.handle.net/10862/6284
Suggested Citation
Aya, F., Nillasca, V. S. N., & Garcia, L. M. (2021). Rearing silver therapon Leiopotherapon plumbeus (Teleostei: Terapontidae) larvae using euryhaline rotifers as starter food. Philippine Agricultural Scientist, 104(4), 388-395. http://hdl.handle.net/10862/6284
Type
Article
ISSN
0031-7454
Collections
  • Journal Articles [1196]

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