Variación de la población del ictioplancton en el Pacífico Sur Oriental durante diciembre de 1997
Uno de los principales objetivos de esta investigación es contribuir al estudio del ictioplancton y zooplancton durante el evento El Niño 1997 en el Pacífico Sur Oriental y a la vez relacionar la abundancia, migración y distribución de los diferentes grupos de organismos con los parámetros de temper...
Main Author: | |
---|---|
Format: | Article in Journal/Newspaper |
Language: | Spanish |
Published: |
Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
1998
|
Subjects: | |
Online Access: | http://hdl.handle.net/1834/2291 |
id |
ftoceandocs:oai:aquadocs.org:1834/2291 |
---|---|
record_format |
openpolar |
spelling |
ftoceandocs:oai:aquadocs.org:1834/2291 2023-05-15T14:04:19+02:00 Variación de la población del ictioplancton en el Pacífico Sur Oriental durante diciembre de 1997 Ortega, D. Pacífico Sur Oriental 1998 http://hdl.handle.net/1834/2291 es spa Instituto Oceanográfico de la Armada, Guayaquil, Ecuador Acta Oceanográfica del Pacífico, 9(1). p. 161-170 1390-0226 http://hdl.handle.net/1834/2291 Geographical distribution Zooplankton Environmental factors Population dynamics Fish larvae Ichthyoplankton El Nino phenomena Fish eggs Journal Contribution Non-Refereed Article 1998 ftoceandocs 2023-04-06T16:58:56Z Uno de los principales objetivos de esta investigación es contribuir al estudio del ictioplancton y zooplancton durante el evento El Niño 1997 en el Pacífico Sur Oriental y a la vez relacionar la abundancia, migración y distribución de los diferentes grupos de organismos con los parámetros de temperatura y salinidad, con respecto a la variación de la población del ictioplancton In the initial part of the VII antarctic expedition, between Guayaquil-Valparaíso, on board vessel B/I Orion of ecuadorian navy in december 1998, zooplankton samples were collected through horizontal and oblique drags using nets bongo 500µm. The purpose of the later analysis was to determine the ichthyoplankton population in the South Eastern Pacific. No stations were done in peruvian water.Total amount of 6380 eggs (10m²)-1 and 2173 larvas (10m²)-1 were estimated from the analysis. The fish eggs belonging to 8 orders, 13 families and 1 genera, while 7 orders, 14 families and 20 genera of fish larvae were registered. The highest concentration of fish eggs was registered in tropical superficial waters masses (ATS), suntropical superficial (ASS) and coastal peruvian waters (ACP). The fish larvae were more abundant in chileans coastal waters, where equatorial subsuperficial water masses (AESS), subtropical subsuperficial (ASS), subantarctic (ASA) and peruvian coastal (ACP) waters found Sardinops sagax y Thunnus sp., larvae were recorded in the south west of Gulf of Guayaquil. There were also identification of two species related with tropical waters, de Benthosema panamense y Myctophum sp. The most representative families in the study ares were Bathylagidae, Gonostomatidae, Scombridae y Myctophidae with the genera Diogenichthys sp., Gonichthys laternatun, Gonichthys sp, Lampanycthus sp., related with tropical species from the west. The presence, migration and distribution of the ichthyoplankton suggest a direct relationship with the temperature of the study area. The temperature and salinity have directly influenced the showing up and ... Article in Journal/Newspaper Antarc* Antarctic IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications Antarctic Guayaquil ENVELOPE(-59.767,-59.767,-62.449,-62.449) Orion ENVELOPE(-59.800,-59.800,-62.438,-62.438) Pacific Valparaíso ENVELOPE(-62.983,-62.983,-64.833,-64.833) |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
Spanish |
topic |
Geographical distribution Zooplankton Environmental factors Population dynamics Fish larvae Ichthyoplankton El Nino phenomena Fish eggs |
spellingShingle |
Geographical distribution Zooplankton Environmental factors Population dynamics Fish larvae Ichthyoplankton El Nino phenomena Fish eggs Ortega, D. Variación de la población del ictioplancton en el Pacífico Sur Oriental durante diciembre de 1997 |
topic_facet |
Geographical distribution Zooplankton Environmental factors Population dynamics Fish larvae Ichthyoplankton El Nino phenomena Fish eggs |
description |
Uno de los principales objetivos de esta investigación es contribuir al estudio del ictioplancton y zooplancton durante el evento El Niño 1997 en el Pacífico Sur Oriental y a la vez relacionar la abundancia, migración y distribución de los diferentes grupos de organismos con los parámetros de temperatura y salinidad, con respecto a la variación de la población del ictioplancton In the initial part of the VII antarctic expedition, between Guayaquil-Valparaíso, on board vessel B/I Orion of ecuadorian navy in december 1998, zooplankton samples were collected through horizontal and oblique drags using nets bongo 500µm. The purpose of the later analysis was to determine the ichthyoplankton population in the South Eastern Pacific. No stations were done in peruvian water.Total amount of 6380 eggs (10m²)-1 and 2173 larvas (10m²)-1 were estimated from the analysis. The fish eggs belonging to 8 orders, 13 families and 1 genera, while 7 orders, 14 families and 20 genera of fish larvae were registered. The highest concentration of fish eggs was registered in tropical superficial waters masses (ATS), suntropical superficial (ASS) and coastal peruvian waters (ACP). The fish larvae were more abundant in chileans coastal waters, where equatorial subsuperficial water masses (AESS), subtropical subsuperficial (ASS), subantarctic (ASA) and peruvian coastal (ACP) waters found Sardinops sagax y Thunnus sp., larvae were recorded in the south west of Gulf of Guayaquil. There were also identification of two species related with tropical waters, de Benthosema panamense y Myctophum sp. The most representative families in the study ares were Bathylagidae, Gonostomatidae, Scombridae y Myctophidae with the genera Diogenichthys sp., Gonichthys laternatun, Gonichthys sp, Lampanycthus sp., related with tropical species from the west. The presence, migration and distribution of the ichthyoplankton suggest a direct relationship with the temperature of the study area. The temperature and salinity have directly influenced the showing up and ... |
format |
Article in Journal/Newspaper |
author |
Ortega, D. |
author_facet |
Ortega, D. |
author_sort |
Ortega, D. |
title |
Variación de la población del ictioplancton en el Pacífico Sur Oriental durante diciembre de 1997 |
title_short |
Variación de la población del ictioplancton en el Pacífico Sur Oriental durante diciembre de 1997 |
title_full |
Variación de la población del ictioplancton en el Pacífico Sur Oriental durante diciembre de 1997 |
title_fullStr |
Variación de la población del ictioplancton en el Pacífico Sur Oriental durante diciembre de 1997 |
title_full_unstemmed |
Variación de la población del ictioplancton en el Pacífico Sur Oriental durante diciembre de 1997 |
title_sort |
variación de la población del ictioplancton en el pacífico sur oriental durante diciembre de 1997 |
publisher |
Instituto Oceanográfico de la Armada, Guayaquil, Ecuador |
publishDate |
1998 |
url |
http://hdl.handle.net/1834/2291 |
op_coverage |
Pacífico Sur Oriental |
long_lat |
ENVELOPE(-59.767,-59.767,-62.449,-62.449) ENVELOPE(-59.800,-59.800,-62.438,-62.438) ENVELOPE(-62.983,-62.983,-64.833,-64.833) |
geographic |
Antarctic Guayaquil Orion Pacific Valparaíso |
geographic_facet |
Antarctic Guayaquil Orion Pacific Valparaíso |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Acta Oceanográfica del Pacífico, 9(1). p. 161-170 1390-0226 http://hdl.handle.net/1834/2291 |
_version_ |
1766275363219963904 |