STUDIES ON THE ECOLOGY OF LARVAL MYCTOPHIDS (PISCES, MYCTOPHIDAE): A PROPOSAL FOR NEW RESEARCH LINES IN THE HUMBOLDT CURRENT

This is a review on some biological and ecological characteristics of the early life stages of myctophids that exemplify their adaptations to coastal upwelling zones and oceanic nearby areas. The approach has been, however, not to make an exhaustive list of all possible research subjects but, in a m...

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Autores principales:	Rodríguez,Laura, Castro,Leonardo
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2000
Materias:	Ichthyoplankton myctophids Humboldt Current upwelling areas
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382000000200011
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spelling	oai:scielo:S0717-653820000002000112001-09-10STUDIES ON THE ECOLOGY OF LARVAL MYCTOPHIDS (PISCES, MYCTOPHIDAE): A PROPOSAL FOR NEW RESEARCH LINES IN THE HUMBOLDT CURRENTRodríguez,LauraCastro,Leonardo Ichthyoplankton myctophids Humboldt Current upwelling areas This is a review on some biological and ecological characteristics of the early life stages of myctophids that exemplify their adaptations to coastal upwelling zones and oceanic nearby areas. The approach has been, however, not to make an exhaustive list of all possible research subjects but, in a more pragmatic way, a) to identify relevant aspects that can be approached with currently available methods in the region and, b) through examples of studies published nationally and regionally, to stimulate future research in larval ecology in the Humboldt Current. Three major themes were assessed: taxonomy and systematics, population ecology and reproductive strategies and, ecophysiology of the early life stages. Among the former, we detected a lack of information and descriptions, especially on the egg stage. We also document how differences occur in widely distributed species at the inter-population level. The development of new molecular techniques are expected to produce an increase in studies about inter- and intraspecific relationships at a regional level. On population biology studies, the relatively scarce information available from upwelling areas suggests that some species have the capacity to modify their reproductive strategies according to the oceanographic conditions, as it has also being documented for invertebrates. However, there is a shortage of information as a result of the lack of adequate sampling techniques to determine efficiently the changes in distribution, in particular in the vertical domain. The purchasing of equipment in several research centers of the region is expected to solve these limitations and to incentive the studies in this research line. Finally, in relation with studies on ecophysiology, we also detected a shortage of information even in very traditional topics such as on feeding and vertical migrations. Interestingly, however, we noticed that some research lines and methods currently very popular in the international literature (age and growth of larval fish utilizing otoliths), are also being utilized for larval fish studies of the Humboldt Current. Even more interesting, some research lines such as metabolisms under hypoxic conditions are being developed primarily in this zoneinfo:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana (Concepción) v.64 n.2 20002000-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382000000200011en10.4067/S0717-65382000000200011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Ichthyoplankton myctophids Humboldt Current upwelling areas
spellingShingle	Ichthyoplankton myctophids Humboldt Current upwelling areas Rodríguez,Laura Castro,Leonardo STUDIES ON THE ECOLOGY OF LARVAL MYCTOPHIDS (PISCES, MYCTOPHIDAE): A PROPOSAL FOR NEW RESEARCH LINES IN THE HUMBOLDT CURRENT
description	This is a review on some biological and ecological characteristics of the early life stages of myctophids that exemplify their adaptations to coastal upwelling zones and oceanic nearby areas. The approach has been, however, not to make an exhaustive list of all possible research subjects but, in a more pragmatic way, a) to identify relevant aspects that can be approached with currently available methods in the region and, b) through examples of studies published nationally and regionally, to stimulate future research in larval ecology in the Humboldt Current. Three major themes were assessed: taxonomy and systematics, population ecology and reproductive strategies and, ecophysiology of the early life stages. Among the former, we detected a lack of information and descriptions, especially on the egg stage. We also document how differences occur in widely distributed species at the inter-population level. The development of new molecular techniques are expected to produce an increase in studies about inter- and intraspecific relationships at a regional level. On population biology studies, the relatively scarce information available from upwelling areas suggests that some species have the capacity to modify their reproductive strategies according to the oceanographic conditions, as it has also being documented for invertebrates. However, there is a shortage of information as a result of the lack of adequate sampling techniques to determine efficiently the changes in distribution, in particular in the vertical domain. The purchasing of equipment in several research centers of the region is expected to solve these limitations and to incentive the studies in this research line. Finally, in relation with studies on ecophysiology, we also detected a shortage of information even in very traditional topics such as on feeding and vertical migrations. Interestingly, however, we noticed that some research lines and methods currently very popular in the international literature (age and growth of larval fish utilizing otoliths), are also being utilized for larval fish studies of the Humboldt Current. Even more interesting, some research lines such as metabolisms under hypoxic conditions are being developed primarily in this zone
author	Rodríguez,Laura Castro,Leonardo
author_facet	Rodríguez,Laura Castro,Leonardo
author_sort	Rodríguez,Laura
title	STUDIES ON THE ECOLOGY OF LARVAL MYCTOPHIDS (PISCES, MYCTOPHIDAE): A PROPOSAL FOR NEW RESEARCH LINES IN THE HUMBOLDT CURRENT
title_short	STUDIES ON THE ECOLOGY OF LARVAL MYCTOPHIDS (PISCES, MYCTOPHIDAE): A PROPOSAL FOR NEW RESEARCH LINES IN THE HUMBOLDT CURRENT
title_full	STUDIES ON THE ECOLOGY OF LARVAL MYCTOPHIDS (PISCES, MYCTOPHIDAE): A PROPOSAL FOR NEW RESEARCH LINES IN THE HUMBOLDT CURRENT
title_fullStr	STUDIES ON THE ECOLOGY OF LARVAL MYCTOPHIDS (PISCES, MYCTOPHIDAE): A PROPOSAL FOR NEW RESEARCH LINES IN THE HUMBOLDT CURRENT
title_full_unstemmed	STUDIES ON THE ECOLOGY OF LARVAL MYCTOPHIDS (PISCES, MYCTOPHIDAE): A PROPOSAL FOR NEW RESEARCH LINES IN THE HUMBOLDT CURRENT
title_sort	studies on the ecology of larval myctophids (pisces, myctophidae): a proposal for new research lines in the humboldt current
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2000
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382000000200011
work_keys_str_mv	AT rodriguezlaura studiesontheecologyoflarvalmyctophidspiscesmyctophidaeaproposalfornewresearchlinesinthehumboldtcurrent AT castroleonardo studiesontheecologyoflarvalmyctophidspiscesmyctophidaeaproposalfornewresearchlinesinthehumboldtcurrent
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STUDIES ON THE ECOLOGY OF LARVAL MYCTOPHIDS (PISCES, MYCTOPHIDAE): A PROPOSAL FOR NEW RESEARCH LINES IN THE HUMBOLDT CURRENT

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