Food-limited invertebrate larvae in the Southern Ocean: testing a paradigm
A long-standing paradigm of larval ecology is that the high incidence of non-feeding larval development in Antarctic invertebrates is an adaptation to limited availability of algal food. Antarctic plankton communities have a relatively high diversity and abundance of invertebrate larvae, some of whi...
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Online Access: | http://hdl.handle.net/10553/42076 https://doi.org/10.3354/meps11786 |
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ftunivlaspalmas:oai:accedacris.ulpgc.es:10553/42076 2023-05-15T13:45:50+02:00 Food-limited invertebrate larvae in the Southern Ocean: testing a paradigm Ameneiro, Julia Lubián, L. M. Sangrà, Pablo Vázquez, E. 2016 http://hdl.handle.net/10553/42076 https://doi.org/10.3354/meps11786 eng eng Marine Ecology - Progress Series 0171-8630 http://hdl.handle.net/10553/42076 doi:10.3354/meps11786 2-s2.0-84980347920 80 71 554 WOS:000383801200005 Marine Ecology Progress Series [ISSN 0171-8630], v. 554, p. 71-80 251007 Oceanografía física Antarctica Brachiolaria Cryptophyceae Larval starvation Meroplankton Odontaster Phytoplankton info:eu-repo/semantics/article Article 2016 ftunivlaspalmas https://doi.org/10.3354/meps11786 2020-03-04T00:11:17Z A long-standing paradigm of larval ecology is that the high incidence of non-feeding larval development in Antarctic invertebrates is an adaptation to limited availability of algal food. Antarctic plankton communities have a relatively high diversity and abundance of invertebrate larvae, some of which are planktotrophic and synchronize the presence of feeding larval stages to peaks in summer phytoplankton. Among the echinoderm larvae found between 30 December 2002 and 7 January 2003 in the Bransfield Strait, the planktotrophic brachiolaria of Odontaster were the most abundant. Although phytoplankton is the main food source for planktotrophic larvae of asteroids in other oceans, previous estimates of the carbon requirements of larvae of the Antarctic asteroid O. validus have indicated that these larvae could not survive on natural levels of Antarctic phytoplankton. The main aims of the present study were to establish whether the abundance of Odontaster larvae is related to that of palatable phytoplankton and to determine whether the availability of the latter would be sufficient to cover the carbon requirements of the larvae. We found that of all palatable phytoplanktonic groups (Cryptophyceae, picoplankton, nanoplankton and ultraplankton), only Cryptophyceae was a significant predictor of brachiolaria abundance, along with the stratification index. We also found that the carbon content of the total palatable phytoplankton would be sufficient to meet the carbon requirements of Odontaster larvae at almost all stations and depths. Although O. validus spawns between mid- and late winter when the concentration of phytoplankton is lowest, winter spawning may be one way of meeting the exogenous energetic requirements of larvae. Article in Journal/Newspaper Antarc* Antarctic Antarctica Bransfield Strait Southern Ocean Universidad de Las Palmas de Gran Canaria: Acceda Antarctic Bransfield Strait Southern Ocean The Antarctic Marine Ecology Progress Series 554 71 80 |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
251007 Oceanografía física Antarctica Brachiolaria Cryptophyceae Larval starvation Meroplankton Odontaster Phytoplankton |
spellingShingle |
251007 Oceanografía física Antarctica Brachiolaria Cryptophyceae Larval starvation Meroplankton Odontaster Phytoplankton Ameneiro, Julia Lubián, L. M. Sangrà, Pablo Vázquez, E. Food-limited invertebrate larvae in the Southern Ocean: testing a paradigm |
topic_facet |
251007 Oceanografía física Antarctica Brachiolaria Cryptophyceae Larval starvation Meroplankton Odontaster Phytoplankton |
description |
A long-standing paradigm of larval ecology is that the high incidence of non-feeding larval development in Antarctic invertebrates is an adaptation to limited availability of algal food. Antarctic plankton communities have a relatively high diversity and abundance of invertebrate larvae, some of which are planktotrophic and synchronize the presence of feeding larval stages to peaks in summer phytoplankton. Among the echinoderm larvae found between 30 December 2002 and 7 January 2003 in the Bransfield Strait, the planktotrophic brachiolaria of Odontaster were the most abundant. Although phytoplankton is the main food source for planktotrophic larvae of asteroids in other oceans, previous estimates of the carbon requirements of larvae of the Antarctic asteroid O. validus have indicated that these larvae could not survive on natural levels of Antarctic phytoplankton. The main aims of the present study were to establish whether the abundance of Odontaster larvae is related to that of palatable phytoplankton and to determine whether the availability of the latter would be sufficient to cover the carbon requirements of the larvae. We found that of all palatable phytoplanktonic groups (Cryptophyceae, picoplankton, nanoplankton and ultraplankton), only Cryptophyceae was a significant predictor of brachiolaria abundance, along with the stratification index. We also found that the carbon content of the total palatable phytoplankton would be sufficient to meet the carbon requirements of Odontaster larvae at almost all stations and depths. Although O. validus spawns between mid- and late winter when the concentration of phytoplankton is lowest, winter spawning may be one way of meeting the exogenous energetic requirements of larvae. |
format |
Article in Journal/Newspaper |
author |
Ameneiro, Julia Lubián, L. M. Sangrà, Pablo Vázquez, E. |
author_facet |
Ameneiro, Julia Lubián, L. M. Sangrà, Pablo Vázquez, E. |
author_sort |
Ameneiro, Julia |
title |
Food-limited invertebrate larvae in the Southern Ocean: testing a paradigm |
title_short |
Food-limited invertebrate larvae in the Southern Ocean: testing a paradigm |
title_full |
Food-limited invertebrate larvae in the Southern Ocean: testing a paradigm |
title_fullStr |
Food-limited invertebrate larvae in the Southern Ocean: testing a paradigm |
title_full_unstemmed |
Food-limited invertebrate larvae in the Southern Ocean: testing a paradigm |
title_sort |
food-limited invertebrate larvae in the southern ocean: testing a paradigm |
publishDate |
2016 |
url |
http://hdl.handle.net/10553/42076 https://doi.org/10.3354/meps11786 |
geographic |
Antarctic Bransfield Strait Southern Ocean The Antarctic |
geographic_facet |
Antarctic Bransfield Strait Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Bransfield Strait Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Bransfield Strait Southern Ocean |
op_source |
Marine Ecology Progress Series [ISSN 0171-8630], v. 554, p. 71-80 |
op_relation |
Marine Ecology - Progress Series 0171-8630 http://hdl.handle.net/10553/42076 doi:10.3354/meps11786 2-s2.0-84980347920 80 71 554 WOS:000383801200005 |
op_doi |
https://doi.org/10.3354/meps11786 |
container_title |
Marine Ecology Progress Series |
container_volume |
554 |
container_start_page |
71 |
op_container_end_page |
80 |
_version_ |
1766231530123821056 |