Using the nematode Panagrolaimus sp. in larval rearing of longfin yellowtail Seriola rivoliana: preliminary results

ABSTRACT The potential of Panagrolaimus sp. nematode as a live prey was assessed in longfin yellowtail Seriola rivoliana larval rearing. Larvae were reared from 3-11 days post-hatching (dph) in a 2000 L tank and fed on copepods and rotifers. On 12 dph, larvae were transferred to eight 200 L tanks at...

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Autores principales:	Mercier,Laurence, Nieves,Itzi Y. Guzmán de las, Seychelles,Laurent H., Contreras-Olguín,Mauricio, Dumas,Silvie
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2021
Materias:	Panagrolaimus sp. Seriola rivoliana Artemia live food larval feeding feeding efficiency aquaculture
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000500812
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spelling	oai:scielo:S0718-560X20210005008122021-11-25Using the nematode Panagrolaimus sp. in larval rearing of longfin yellowtail Seriola rivoliana: preliminary resultsMercier,LaurenceNieves,Itzi Y. Guzmán de lasSeychelles,Laurent H.Contreras-Olguín,MauricioDumas,Silvie Panagrolaimus sp. Seriola rivoliana Artemia live food larval feeding feeding efficiency aquaculture ABSTRACT The potential of Panagrolaimus sp. nematode as a live prey was assessed in longfin yellowtail Seriola rivoliana larval rearing. Larvae were reared from 3-11 days post-hatching (dph) in a 2000 L tank and fed on copepods and rotifers. On 12 dph, larvae were transferred to eight 200 L tanks at a density of 12 larvae L-1 to start the feeding trial, consisting of two treatments (Artemia or nematodes) using four replicates each. Rotifers were offered on 12 dph with a “co-feeding” from 14 to 16 dph (rotifer/enriched Artemia or rotifer/nematode). Only Artemia or nematodes were supplied from 17 to 19 dph. Feeding incidence was 80-90% on 14 dph, but more larvae were capturing rotifers than Artemia or nematodes. Artemia consumption increased more than nematodes at 19 dph, though it was not significantly different. Significantly lower enterocyte and villus heights in the posterior intestine were observed at 19 dph in larvae fed on nematodes but only in enterocyte height in the anterior one. No significant differences were observed between treatments in total larval length and body depth on 16 dph, but a significantly higher total length in the nematode one was present on 19 dph. A significantly higher survival was observed in treatment Artemia compared to nematodes. These preliminary results showed a lower nutritional condition in larvae fed nematodes; however, technical improvements need to be performed to increase Panagrolaimus sp. availability to larvae in the water column.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.49 n.5 20212021-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000500812en10.3856/vol49-issue5-fulltext-2733
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Panagrolaimus sp. Seriola rivoliana Artemia live food larval feeding feeding efficiency aquaculture
spellingShingle	Panagrolaimus sp. Seriola rivoliana Artemia live food larval feeding feeding efficiency aquaculture Mercier,Laurence Nieves,Itzi Y. Guzmán de las Seychelles,Laurent H. Contreras-Olguín,Mauricio Dumas,Silvie Using the nematode Panagrolaimus sp. in larval rearing of longfin yellowtail Seriola rivoliana: preliminary results
description	ABSTRACT The potential of Panagrolaimus sp. nematode as a live prey was assessed in longfin yellowtail Seriola rivoliana larval rearing. Larvae were reared from 3-11 days post-hatching (dph) in a 2000 L tank and fed on copepods and rotifers. On 12 dph, larvae were transferred to eight 200 L tanks at a density of 12 larvae L-1 to start the feeding trial, consisting of two treatments (Artemia or nematodes) using four replicates each. Rotifers were offered on 12 dph with a “co-feeding” from 14 to 16 dph (rotifer/enriched Artemia or rotifer/nematode). Only Artemia or nematodes were supplied from 17 to 19 dph. Feeding incidence was 80-90% on 14 dph, but more larvae were capturing rotifers than Artemia or nematodes. Artemia consumption increased more than nematodes at 19 dph, though it was not significantly different. Significantly lower enterocyte and villus heights in the posterior intestine were observed at 19 dph in larvae fed on nematodes but only in enterocyte height in the anterior one. No significant differences were observed between treatments in total larval length and body depth on 16 dph, but a significantly higher total length in the nematode one was present on 19 dph. A significantly higher survival was observed in treatment Artemia compared to nematodes. These preliminary results showed a lower nutritional condition in larvae fed nematodes; however, technical improvements need to be performed to increase Panagrolaimus sp. availability to larvae in the water column.
author	Mercier,Laurence Nieves,Itzi Y. Guzmán de las Seychelles,Laurent H. Contreras-Olguín,Mauricio Dumas,Silvie
author_facet	Mercier,Laurence Nieves,Itzi Y. Guzmán de las Seychelles,Laurent H. Contreras-Olguín,Mauricio Dumas,Silvie
author_sort	Mercier,Laurence
title	Using the nematode Panagrolaimus sp. in larval rearing of longfin yellowtail Seriola rivoliana: preliminary results
title_short	Using the nematode Panagrolaimus sp. in larval rearing of longfin yellowtail Seriola rivoliana: preliminary results
title_full	Using the nematode Panagrolaimus sp. in larval rearing of longfin yellowtail Seriola rivoliana: preliminary results
title_fullStr	Using the nematode Panagrolaimus sp. in larval rearing of longfin yellowtail Seriola rivoliana: preliminary results
title_full_unstemmed	Using the nematode Panagrolaimus sp. in larval rearing of longfin yellowtail Seriola rivoliana: preliminary results
title_sort	using the nematode panagrolaimus sp. in larval rearing of longfin yellowtail seriola rivoliana: preliminary results
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000500812
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Using the nematode Panagrolaimus sp. in larval rearing of longfin yellowtail Seriola rivoliana: preliminary results

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