Invasive ascidians: Do local predators play a key role in colonization success?

Autores
Giachetti, Clara Belen; Battini, Nicolás; Tatian, Marcos; Schwindt, Evangelina
Año de publicación
2016
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Invasive ascidians are usually considered as pests in the invaded areas including aquaculture facilities. Predation might control the establishment and further colonization depending on the habitat and the predator/prey species involved in the interaction. In this work, we evaluate the effect of different potential predators on the survival of the adults of Ascidiella aspersa, one of the most invasive ascidian species in Argentina. Predator and prey species were collected in Puerto Madryn port, transported to the aquarium and acclimated during seven days. As potential predators, we tested the exotic sea slug, as well as native sea stars and sea urchins. Several trials were made in individual tanks subdivided in two equal compartments (prey alone and prey plus one predator species). After a starvation period (2-9 days depending on the species), a predator was placed in a compartment with four ascidians during 2-4 days depending on the predator species. At the end, we quantified mortality percentage in both compartments, when it was zero, we offered to the predator his favourite prey to confirm that the rejection was not due to satiety. Ascidians were observed for a week to discard death due to tunic damage. Preliminary results showed that sea urchins and sea slugs feed upon the epibionts growing on the ascidian tunic, causing a superficial damage to the tunic but not killing the ascidians. Only sea stars were able to injure the tunic but the ascidians survived and lived with that injury. More experiments are been performing with a wider pool of predator species, including the voracious invasive green crab Carcinus maenas, and also evaluating the effects of predation on other invasive ascidians, including adults and juveniles. These results suggest that A. aspersa adults are strong enough for local predators, however the softer juveniles could be negatively affected by predation.
Fil: Giachetti, Clara Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina
Fil: Battini, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina
Fil: Tatian, Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina
Fil: Schwindt, Evangelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina
Marine and Freshwater Invasive Species: Ecology, Impact and Management
Buenos Aires
Argentina
Aquatic Ecosystem Health and Management Society
Consejo Nacional de Investigaciones Científicas y Técnicas
Materia
INVASIVE ASCIDIANS
PREDATION
MARINE PORTS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/154730
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/154730
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Invasive ascidians: Do local predators play a key role in colonization success?Giachetti, Clara BelenBattini, NicolásTatian, MarcosSchwindt, EvangelinaINVASIVE ASCIDIANSPREDATIONMARINE PORTShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Invasive ascidians are usually considered as pests in the invaded areas including aquaculture facilities. Predation might control the establishment and further colonization depending on the habitat and the predator/prey species involved in the interaction. In this work, we evaluate the effect of different potential predators on the survival of the adults of Ascidiella aspersa, one of the most invasive ascidian species in Argentina. Predator and prey species were collected in Puerto Madryn port, transported to the aquarium and acclimated during seven days. As potential predators, we tested the exotic sea slug, as well as native sea stars and sea urchins. Several trials were made in individual tanks subdivided in two equal compartments (prey alone and prey plus one predator species). After a starvation period (2-9 days depending on the species), a predator was placed in a compartment with four ascidians during 2-4 days depending on the predator species. At the end, we quantified mortality percentage in both compartments, when it was zero, we offered to the predator his favourite prey to confirm that the rejection was not due to satiety. Ascidians were observed for a week to discard death due to tunic damage. Preliminary results showed that sea urchins and sea slugs feed upon the epibionts growing on the ascidian tunic, causing a superficial damage to the tunic but not killing the ascidians. Only sea stars were able to injure the tunic but the ascidians survived and lived with that injury. More experiments are been performing with a wider pool of predator species, including the voracious invasive green crab Carcinus maenas, and also evaluating the effects of predation on other invasive ascidians, including adults and juveniles. These results suggest that A. aspersa adults are strong enough for local predators, however the softer juveniles could be negatively affected by predation.Fil: Giachetti, Clara Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; ArgentinaFil: Battini, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; ArgentinaFil: Tatian, Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; ArgentinaFil: Schwindt, Evangelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; ArgentinaMarine and Freshwater Invasive Species: Ecology, Impact and ManagementBuenos AiresArgentinaAquatic Ecosystem Health and Management SocietyConsejo Nacional de Investigaciones Científicas y TécnicasAquatic Ecosystem Health and Management Society2016info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/154730Invasive ascidians: Do local predators play a key role in colonization success?; Marine and Freshwater Invasive Species: Ecology, Impact and Management; Buenos Aires; Argentina; 2016; 56-56CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://conferences.aehms.org/mfis-argentina/Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:29:40Zoai:ri.conicet.gov.ar:11336/154730instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:29:41.248CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Invasive ascidians: Do local predators play a key role in colonization success?
title Invasive ascidians: Do local predators play a key role in colonization success?
spellingShingle Invasive ascidians: Do local predators play a key role in colonization success?
Giachetti, Clara Belen
INVASIVE ASCIDIANS
PREDATION
MARINE PORTS
title_short Invasive ascidians: Do local predators play a key role in colonization success?
title_full Invasive ascidians: Do local predators play a key role in colonization success?
title_fullStr Invasive ascidians: Do local predators play a key role in colonization success?
title_full_unstemmed Invasive ascidians: Do local predators play a key role in colonization success?
title_sort Invasive ascidians: Do local predators play a key role in colonization success?
dc.creator.none.fl_str_mv Giachetti, Clara Belen
Battini, Nicolás
Tatian, Marcos
Schwindt, Evangelina
author Giachetti, Clara Belen
author_facet Giachetti, Clara Belen
Battini, Nicolás
Tatian, Marcos
Schwindt, Evangelina
author_role author
author2 Battini, Nicolás
Tatian, Marcos
Schwindt, Evangelina
author2_role author
author
author
dc.subject.none.fl_str_mv INVASIVE ASCIDIANS
PREDATION
MARINE PORTS
topic INVASIVE ASCIDIANS
PREDATION
MARINE PORTS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Invasive ascidians are usually considered as pests in the invaded areas including aquaculture facilities. Predation might control the establishment and further colonization depending on the habitat and the predator/prey species involved in the interaction. In this work, we evaluate the effect of different potential predators on the survival of the adults of Ascidiella aspersa, one of the most invasive ascidian species in Argentina. Predator and prey species were collected in Puerto Madryn port, transported to the aquarium and acclimated during seven days. As potential predators, we tested the exotic sea slug, as well as native sea stars and sea urchins. Several trials were made in individual tanks subdivided in two equal compartments (prey alone and prey plus one predator species). After a starvation period (2-9 days depending on the species), a predator was placed in a compartment with four ascidians during 2-4 days depending on the predator species. At the end, we quantified mortality percentage in both compartments, when it was zero, we offered to the predator his favourite prey to confirm that the rejection was not due to satiety. Ascidians were observed for a week to discard death due to tunic damage. Preliminary results showed that sea urchins and sea slugs feed upon the epibionts growing on the ascidian tunic, causing a superficial damage to the tunic but not killing the ascidians. Only sea stars were able to injure the tunic but the ascidians survived and lived with that injury. More experiments are been performing with a wider pool of predator species, including the voracious invasive green crab Carcinus maenas, and also evaluating the effects of predation on other invasive ascidians, including adults and juveniles. These results suggest that A. aspersa adults are strong enough for local predators, however the softer juveniles could be negatively affected by predation.
Fil: Giachetti, Clara Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina
Fil: Battini, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina
Fil: Tatian, Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina
Fil: Schwindt, Evangelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina
Marine and Freshwater Invasive Species: Ecology, Impact and Management
Buenos Aires
Argentina
Aquatic Ecosystem Health and Management Society
Consejo Nacional de Investigaciones Científicas y Técnicas
description Invasive ascidians are usually considered as pests in the invaded areas including aquaculture facilities. Predation might control the establishment and further colonization depending on the habitat and the predator/prey species involved in the interaction. In this work, we evaluate the effect of different potential predators on the survival of the adults of Ascidiella aspersa, one of the most invasive ascidian species in Argentina. Predator and prey species were collected in Puerto Madryn port, transported to the aquarium and acclimated during seven days. As potential predators, we tested the exotic sea slug, as well as native sea stars and sea urchins. Several trials were made in individual tanks subdivided in two equal compartments (prey alone and prey plus one predator species). After a starvation period (2-9 days depending on the species), a predator was placed in a compartment with four ascidians during 2-4 days depending on the predator species. At the end, we quantified mortality percentage in both compartments, when it was zero, we offered to the predator his favourite prey to confirm that the rejection was not due to satiety. Ascidians were observed for a week to discard death due to tunic damage. Preliminary results showed that sea urchins and sea slugs feed upon the epibionts growing on the ascidian tunic, causing a superficial damage to the tunic but not killing the ascidians. Only sea stars were able to injure the tunic but the ascidians survived and lived with that injury. More experiments are been performing with a wider pool of predator species, including the voracious invasive green crab Carcinus maenas, and also evaluating the effects of predation on other invasive ascidians, including adults and juveniles. These results suggest that A. aspersa adults are strong enough for local predators, however the softer juveniles could be negatively affected by predation.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/154730
Invasive ascidians: Do local predators play a key role in colonization success?; Marine and Freshwater Invasive Species: Ecology, Impact and Management; Buenos Aires; Argentina; 2016; 56-56
CONICET Digital
CONICET
url http://hdl.handle.net/11336/154730
identifier_str_mv Invasive ascidians: Do local predators play a key role in colonization success?; Marine and Freshwater Invasive Species: Ecology, Impact and Management; Buenos Aires; Argentina; 2016; 56-56
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://conferences.aehms.org/mfis-argentina/
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Aquatic Ecosystem Health and Management Society
publisher.none.fl_str_mv Aquatic Ecosystem Health and Management Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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