Feeding of a larval clinid fish in a microtidal estuary from southern Chile

The utilization of estuaries as nursery zones for fish and invertebrates is widely known, but differences in the success of resource exploitation vary between resident and opportunistic estuarine species. The distribution and diet of larval Myxodes viridis (Pisces, Clinidae) were studied at 2 locati...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Ochoa-Muñoz,María J, Valenzuela,Claudio P, Toledo,Silvana, Bustos,Claudia A, Landaeta,Mauricio F
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2013
Materias:	Myxodes viridis ichthyoplankton feeding success Corral Bay
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000100005
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-19572013000100005
record_format	dspace
spelling	oai:scielo:S0718-195720130001000052014-09-09Feeding of a larval clinid fish in a microtidal estuary from southern ChileOchoa-Muñoz,María JValenzuela,Claudio PToledo,SilvanaBustos,Claudia ALandaeta,Mauricio F Myxodes viridis ichthyoplankton feeding success Corral Bay The utilization of estuaries as nursery zones for fish and invertebrates is widely known, but differences in the success of resource exploitation vary between resident and opportunistic estuarine species. The distribution and diet of larval Myxodes viridis (Pisces, Clinidae) were studied at 2 locations (up-estuary and down-estuary) in the Corral Bay estuary, one of the largest estuaries in southern Chile, during the austral spring 2009 at 3 depths (surface, pycnocline, deep) during the flood and ebb of 4 tidal cycles. Larvae were collected mostly at the down-estuary station during the ebb phase. Feeding incidence was also greater during the ebb phase; larvae changed from omnivory to carnivory as they developed, predating mainly on nauplii and calanoid copepodites. Although the feeding success was similar for each developmental stage along the water column, diet of preflexion and flexion larvae was different in the first 3-4 m depth (surface and pycnocline) in relation to deeper waters (7-10 m depth, near to the bottom). This suggests that the pycnocline may affect the composition of the diet of small, larval M. viridis but not the size, number or volume of ingested prey. Additionally, because foraging is predominantly based on the different life stages of copepods, larvae emerging during the ebb tide may increase the off-estuary advection into nearby shelf waters, indicating that this species is not a user of the estuary during its early development.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.48 n.1 20132013-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000100005en10.4067/S0718-19572013000100005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Myxodes viridis ichthyoplankton feeding success Corral Bay
spellingShingle	Myxodes viridis ichthyoplankton feeding success Corral Bay Ochoa-Muñoz,María J Valenzuela,Claudio P Toledo,Silvana Bustos,Claudia A Landaeta,Mauricio F Feeding of a larval clinid fish in a microtidal estuary from southern Chile
description	The utilization of estuaries as nursery zones for fish and invertebrates is widely known, but differences in the success of resource exploitation vary between resident and opportunistic estuarine species. The distribution and diet of larval Myxodes viridis (Pisces, Clinidae) were studied at 2 locations (up-estuary and down-estuary) in the Corral Bay estuary, one of the largest estuaries in southern Chile, during the austral spring 2009 at 3 depths (surface, pycnocline, deep) during the flood and ebb of 4 tidal cycles. Larvae were collected mostly at the down-estuary station during the ebb phase. Feeding incidence was also greater during the ebb phase; larvae changed from omnivory to carnivory as they developed, predating mainly on nauplii and calanoid copepodites. Although the feeding success was similar for each developmental stage along the water column, diet of preflexion and flexion larvae was different in the first 3-4 m depth (surface and pycnocline) in relation to deeper waters (7-10 m depth, near to the bottom). This suggests that the pycnocline may affect the composition of the diet of small, larval M. viridis but not the size, number or volume of ingested prey. Additionally, because foraging is predominantly based on the different life stages of copepods, larvae emerging during the ebb tide may increase the off-estuary advection into nearby shelf waters, indicating that this species is not a user of the estuary during its early development.
author	Ochoa-Muñoz,María J Valenzuela,Claudio P Toledo,Silvana Bustos,Claudia A Landaeta,Mauricio F
author_facet	Ochoa-Muñoz,María J Valenzuela,Claudio P Toledo,Silvana Bustos,Claudia A Landaeta,Mauricio F
author_sort	Ochoa-Muñoz,María J
title	Feeding of a larval clinid fish in a microtidal estuary from southern Chile
title_short	Feeding of a larval clinid fish in a microtidal estuary from southern Chile
title_full	Feeding of a larval clinid fish in a microtidal estuary from southern Chile
title_fullStr	Feeding of a larval clinid fish in a microtidal estuary from southern Chile
title_full_unstemmed	Feeding of a larval clinid fish in a microtidal estuary from southern Chile
title_sort	feeding of a larval clinid fish in a microtidal estuary from southern chile
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000100005
work_keys_str_mv	AT ochoamunozmariaj feedingofalarvalclinidfishinamicrotidalestuaryfromsouthernchile AT valenzuelaclaudiop feedingofalarvalclinidfishinamicrotidalestuaryfromsouthernchile AT toledosilvana feedingofalarvalclinidfishinamicrotidalestuaryfromsouthernchile AT bustosclaudiaa feedingofalarvalclinidfishinamicrotidalestuaryfromsouthernchile AT landaetamauriciof feedingofalarvalclinidfishinamicrotidalestuaryfromsouthernchile
_version_	1714202324413448192

Feeding of a larval clinid fish in a microtidal estuary from southern Chile

Ejemplares similares