Daily ration and feeding chronology of dominant diel vertical migrant fishes in the Subtropical Eastern North Atlantic Ocean
Diel Vertical Migrants (DVMs) are mainly zooplankton and micronekton which migrate upward from 400-500 m depth every night to feed on the productive epipelagic zone, coming back at dawn to the mesopelagic zone, where they defecate, excrete, and respire the ingested carbon. DVMs should contribute to...
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ftunivlaspalmas:oai:accedacris.ulpgc.es:10553/5132 2023-05-15T17:31:22+02:00 Daily ration and feeding chronology of dominant diel vertical migrant fishes in the Subtropical Eastern North Atlantic Ocean Ariza, Alejandro V. Aguilar, Natacha Hernández-León, Santiago 2011-04-12T11:30:51Z http://hdl.handle.net/10553/5132 eng eng http://hdl.handle.net/10553/5132 626850 Sí info:eu-repo/semantics/openAccess 5th International Zooplankton Production Symposium (Pucón, Chile), 13-18 Marzo 2011 240106 Ecología animal Micronekton Myctophidae Daily ration Feeding chronology Carbon flux info:eu-repo/semantics/conferenceobject Conference poster 2011 ftunivlaspalmas 2020-10-28T00:09:22Z Diel Vertical Migrants (DVMs) are mainly zooplankton and micronekton which migrate upward from 400-500 m depth every night to feed on the productive epipelagic zone, coming back at dawn to the mesopelagic zone, where they defecate, excrete, and respire the ingested carbon. DVMs should contribute to the biological pump in the ocean and, accordingly, to the global CO2 balance. Although those migrants are mainly small fishes, cephalopods and crustaceans, the lanternfishes (myctophidae) usually contribute up to 80% of total DVMs biomass. Thus, myctophids may represent a pathway accounting for a substantial export of organic carbon to the deep ocean. However, the magnitude of this transport is still poorly known. In order to assess this active flux of carbon, we performed a preliminary study of mesopelagic organisms around the Canary Islands. Here we present the results of diet, daily rations and feeding chronology of Lobianchia dofleini, Hygophum hygomii and Ceratoscopelus maderensis, 3 dominant species of myctophids performing diel vertical migrations in the Subtropical Eastern North Atlantic Ocean. Samples were obtained on board the RV La Bocaina during June 2009. Myctophids were sorted and fixed in 4% buffered formalin and the stomach contents of target species were examined and weighted. Feeding chronology was approached by studying stomach fullness and state of digestion of prey items in individuals from hauls performed at different times and depths. Our results provide further information about lanternfishes feeding ecology in relation to their vertical migration patterns as well as their contribution to the biological carbon pump. Conference Object North Atlantic Universidad de Las Palmas de Gran Canaria: Acceda |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
240106 Ecología animal Micronekton Myctophidae Daily ration Feeding chronology Carbon flux |
spellingShingle |
240106 Ecología animal Micronekton Myctophidae Daily ration Feeding chronology Carbon flux Ariza, Alejandro V. Aguilar, Natacha Hernández-León, Santiago Daily ration and feeding chronology of dominant diel vertical migrant fishes in the Subtropical Eastern North Atlantic Ocean |
topic_facet |
240106 Ecología animal Micronekton Myctophidae Daily ration Feeding chronology Carbon flux |
description |
Diel Vertical Migrants (DVMs) are mainly zooplankton and micronekton which migrate upward from 400-500 m depth every night to feed on the productive epipelagic zone, coming back at dawn to the mesopelagic zone, where they defecate, excrete, and respire the ingested carbon. DVMs should contribute to the biological pump in the ocean and, accordingly, to the global CO2 balance. Although those migrants are mainly small fishes, cephalopods and crustaceans, the lanternfishes (myctophidae) usually contribute up to 80% of total DVMs biomass. Thus, myctophids may represent a pathway accounting for a substantial export of organic carbon to the deep ocean. However, the magnitude of this transport is still poorly known. In order to assess this active flux of carbon, we performed a preliminary study of mesopelagic organisms around the Canary Islands. Here we present the results of diet, daily rations and feeding chronology of Lobianchia dofleini, Hygophum hygomii and Ceratoscopelus maderensis, 3 dominant species of myctophids performing diel vertical migrations in the Subtropical Eastern North Atlantic Ocean. Samples were obtained on board the RV La Bocaina during June 2009. Myctophids were sorted and fixed in 4% buffered formalin and the stomach contents of target species were examined and weighted. Feeding chronology was approached by studying stomach fullness and state of digestion of prey items in individuals from hauls performed at different times and depths. Our results provide further information about lanternfishes feeding ecology in relation to their vertical migration patterns as well as their contribution to the biological carbon pump. |
format |
Conference Object |
author |
Ariza, Alejandro V. Aguilar, Natacha Hernández-León, Santiago |
author_facet |
Ariza, Alejandro V. Aguilar, Natacha Hernández-León, Santiago |
author_sort |
Ariza, Alejandro V. |
title |
Daily ration and feeding chronology of dominant diel vertical migrant fishes in the Subtropical Eastern North Atlantic Ocean |
title_short |
Daily ration and feeding chronology of dominant diel vertical migrant fishes in the Subtropical Eastern North Atlantic Ocean |
title_full |
Daily ration and feeding chronology of dominant diel vertical migrant fishes in the Subtropical Eastern North Atlantic Ocean |
title_fullStr |
Daily ration and feeding chronology of dominant diel vertical migrant fishes in the Subtropical Eastern North Atlantic Ocean |
title_full_unstemmed |
Daily ration and feeding chronology of dominant diel vertical migrant fishes in the Subtropical Eastern North Atlantic Ocean |
title_sort |
daily ration and feeding chronology of dominant diel vertical migrant fishes in the subtropical eastern north atlantic ocean |
publishDate |
2011 |
url |
http://hdl.handle.net/10553/5132 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
5th International Zooplankton Production Symposium (Pucón, Chile), 13-18 Marzo 2011 |
op_relation |
http://hdl.handle.net/10553/5132 626850 Sí |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766128895479775232 |