Chemical defenses of tunicates of the genus Aplidium from the Weddell Sea (Antarctica)
Predation and competition are important factors structuring Antarctic benthic communities and are expected to promote the production of chemical defenses. Tunicates are subject to little predation, and this is often attributed to chemical compounds, although their defensive activity has been poorly...
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Online Access: | http://hdl.handle.net/10045/108061 https://doi.org/10.1007/s00300-010-0819-7 |
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ftunivalicante:oai:rua.ua.es:10045/108061 2023-05-15T13:46:48+02:00 Chemical defenses of tunicates of the genus Aplidium from the Weddell Sea (Antarctica) Núñez Pons, Laura Forestieri, R. Nieto, Rosa María Varela Díaz de Tuesta, María Mercedes Nappo, Michela Rodriguez, Jaime Jimánez, Carlos Castelluccio, Francesco Carbone, Marianna Ramos-Esplá, Alfonso A. Gavagnin, Margherita Ávila Escartín, Conxita Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada Biología Marina 2010-10 http://hdl.handle.net/10045/108061 https://doi.org/10.1007/s00300-010-0819-7 eng eng Springer Nature https://doi.org/10.1007/s00300-010-0819-7 Polar Biology. 2010, 33: 1319-1329. doi:10.1007/s00300-010-0819-7 0722-4060 (Print) 1432-2056 (Online) http://hdl.handle.net/10045/108061 doi:10.1007/s00300-010-0819-7 A10257657 © Springer-Verlag 2010 info:eu-repo/semantics/restrictedAccess Chemical defense Antarctic tunicates Indole alkaloids Deterrent activity Aplidium species Odontaster validus Zoología info:eu-repo/semantics/article 2010 ftunivalicante https://doi.org/10.1007/s00300-010-0819-7 2020-07-21T23:15:20Z Predation and competition are important factors structuring Antarctic benthic communities and are expected to promote the production of chemical defenses. Tunicates are subject to little predation, and this is often attributed to chemical compounds, although their defensive activity has been poorly demonstrated against sympatric predators. In fact, these animals, particularly the genus Aplidium, are rich sources of bioactive metabolites. In this study, we report the natural products, distribution and ecological activity of two Aplidium ascidian species from the Weddell Sea (Antarctica). In our investigation, organic extracts obtained from external and internal tissues of specimens of A. falklandicum demonstrated to contain deterrent agents that caused repellency against the Antarctic omnivorous predator, the sea star Odontaster validus. Chemical analysis performed with Antarctic colonial ascidians Aplidium meridianum and Aplidium falklandicum allowed the purification of a group of known bioactive indole alkaloids, meridianins A-G. These isolated compounds proved to be responsible for the deterrent activity. Funding was provided by the Ministry of Science and Education of Spain through the ECOQUIM Projects (REN2003-00545, REN2002-12006E ANT and CGL2004-03356/ANT). Article in Journal/Newspaper Antarc* Antarctic Antarctica Polar Biology Weddell Sea RUA - Repositorio Institucional de la Universidad de Alicante Antarctic The Antarctic Weddell Weddell Sea Polar Biology 33 10 1319 1329 |
institution |
Open Polar |
collection |
RUA - Repositorio Institucional de la Universidad de Alicante |
op_collection_id |
ftunivalicante |
language |
English |
topic |
Chemical defense Antarctic tunicates Indole alkaloids Deterrent activity Aplidium species Odontaster validus Zoología |
spellingShingle |
Chemical defense Antarctic tunicates Indole alkaloids Deterrent activity Aplidium species Odontaster validus Zoología Núñez Pons, Laura Forestieri, R. Nieto, Rosa María Varela Díaz de Tuesta, María Mercedes Nappo, Michela Rodriguez, Jaime Jimánez, Carlos Castelluccio, Francesco Carbone, Marianna Ramos-Esplá, Alfonso A. Gavagnin, Margherita Ávila Escartín, Conxita Chemical defenses of tunicates of the genus Aplidium from the Weddell Sea (Antarctica) |
topic_facet |
Chemical defense Antarctic tunicates Indole alkaloids Deterrent activity Aplidium species Odontaster validus Zoología |
description |
Predation and competition are important factors structuring Antarctic benthic communities and are expected to promote the production of chemical defenses. Tunicates are subject to little predation, and this is often attributed to chemical compounds, although their defensive activity has been poorly demonstrated against sympatric predators. In fact, these animals, particularly the genus Aplidium, are rich sources of bioactive metabolites. In this study, we report the natural products, distribution and ecological activity of two Aplidium ascidian species from the Weddell Sea (Antarctica). In our investigation, organic extracts obtained from external and internal tissues of specimens of A. falklandicum demonstrated to contain deterrent agents that caused repellency against the Antarctic omnivorous predator, the sea star Odontaster validus. Chemical analysis performed with Antarctic colonial ascidians Aplidium meridianum and Aplidium falklandicum allowed the purification of a group of known bioactive indole alkaloids, meridianins A-G. These isolated compounds proved to be responsible for the deterrent activity. Funding was provided by the Ministry of Science and Education of Spain through the ECOQUIM Projects (REN2003-00545, REN2002-12006E ANT and CGL2004-03356/ANT). |
author2 |
Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada Biología Marina |
format |
Article in Journal/Newspaper |
author |
Núñez Pons, Laura Forestieri, R. Nieto, Rosa María Varela Díaz de Tuesta, María Mercedes Nappo, Michela Rodriguez, Jaime Jimánez, Carlos Castelluccio, Francesco Carbone, Marianna Ramos-Esplá, Alfonso A. Gavagnin, Margherita Ávila Escartín, Conxita |
author_facet |
Núñez Pons, Laura Forestieri, R. Nieto, Rosa María Varela Díaz de Tuesta, María Mercedes Nappo, Michela Rodriguez, Jaime Jimánez, Carlos Castelluccio, Francesco Carbone, Marianna Ramos-Esplá, Alfonso A. Gavagnin, Margherita Ávila Escartín, Conxita |
author_sort |
Núñez Pons, Laura |
title |
Chemical defenses of tunicates of the genus Aplidium from the Weddell Sea (Antarctica) |
title_short |
Chemical defenses of tunicates of the genus Aplidium from the Weddell Sea (Antarctica) |
title_full |
Chemical defenses of tunicates of the genus Aplidium from the Weddell Sea (Antarctica) |
title_fullStr |
Chemical defenses of tunicates of the genus Aplidium from the Weddell Sea (Antarctica) |
title_full_unstemmed |
Chemical defenses of tunicates of the genus Aplidium from the Weddell Sea (Antarctica) |
title_sort |
chemical defenses of tunicates of the genus aplidium from the weddell sea (antarctica) |
publisher |
Springer Nature |
publishDate |
2010 |
url |
http://hdl.handle.net/10045/108061 https://doi.org/10.1007/s00300-010-0819-7 |
geographic |
Antarctic The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctica Polar Biology Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Polar Biology Weddell Sea |
op_relation |
https://doi.org/10.1007/s00300-010-0819-7 Polar Biology. 2010, 33: 1319-1329. doi:10.1007/s00300-010-0819-7 0722-4060 (Print) 1432-2056 (Online) http://hdl.handle.net/10045/108061 doi:10.1007/s00300-010-0819-7 A10257657 |
op_rights |
© Springer-Verlag 2010 info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00300-010-0819-7 |
container_title |
Polar Biology |
container_volume |
33 |
container_issue |
10 |
container_start_page |
1319 |
op_container_end_page |
1329 |
_version_ |
1766245240124997632 |