Physiological dormancy broken by endozoochory: Austral parakeets (Enicognathus ferrugineus) as legitimate dispersers of calafate (Berberis microphylla) in the Patagonian Andes

Autores
Bravo, Carolina; Chamorro, Daniel; Hiraldo, Fernando; Speziale, Karina Lilian; Lambertucci, Sergio Agustin; Tella, José L.; Blanco, Guillermo
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Aims: Seed dispersal by endozoochory is an important process in plant regeneration and the establishment of new populations. Seeds with dormancy may especially benefit after disperser gut passage. However, the ways in which gut passage affect the germination of plant species with physiological dormancy remain unclear. Here, we experimentally assessed the mutualistic interaction between the Austral parakeet (Enicognathus ferrugineus) as a disperser of calafate (Berberis microphylla), a thorny bush inhabiting the understory of the Austral temperate forests of South America with seeds that are characterized by deep physiological dormancy. Methods: Germination success and viability of calafate seeds obtained from faeces and from intact fruits were tested under four treatments: (i) digested seeds, (ii) digested seeds with faecal extract, (iii) intact seeds from fruit and (iv) intact seeds from fruit with pulp. Important Findings: About 65% of the Austral parakeet droppings contained calafate seeds. Viability of seeds did not differ between treatments. However, germination was significantly higher in digested seeds than in intact seeds from fruits, while no difference was found between faecal and pulp extracts. Neither faecal matter nor fruit pulp provided seeds with any ecological advantages derived from enhancing germinability, but did confer some disadvantage in germination time. Faecal matter is expected to be completely lacking around seeds after several months under snow before germinating in the following spring, given intense washing due to persistent rain and the spring thaw in the Patagonian Andes. The higher germinability along with faster germination of digested seeds supports the hypothesis of a legitimate mutualistic interaction between Austral parakeets and calafate. We hypothesized that the passage through the disperser digestive tract might break physiological dormancy as differences in germinability between ingested and non-ingested seeds. Our results highlight the relevant role of endozoochory in plant species with physiological dormancy living in highly seasonal environments.
种子由动物内携传播是植物再生和新种群建立的重要过程。具有休眠的种子经过传播者肠道传代作用后可能特别受益。然而,肠道 传代作用如何影响具有生理休眠植物的萌发尚不清楚。在本研究中,我们实验性地评估了南鹦哥(Enicognathus ferrugineus)作为小檗属植 物(Berberis microphylla)传播者的互惠共生。Berberis microphylla是一种多刺的灌木,栖息在南美洲温带森林的下层,其种子具有深度生 理休眠的特性。本研究通过四种处理:(1)种子消化处理,(2)粪便提取物消化处理,(3)果实种子完整处理和(4)包含果肉果实种子完整 处理,测定了从粪便和完整果实中提取的B. microphylla种子的发芽成功率和活力。研究结果表明,大约65%的南鹦哥的粪便中含有B. microphylla种子。不同处理的种子存活率无显著差异。然而,消化后的种子萌发率显著高于完整果实种子,而粪便和果肉提取物处理之间没有差异。粪便和果肉都没有为种子提供任何提高发芽能力的生态优势,但在萌发时间上确实造成了一些劣势。由于持续降雨和巴塔哥尼亚安第斯山脉春季融雪带来的严重冲刷,种子附近的粪便在雪下几个月后就会完全缺失。消化种子较高的发芽能力和较快的发芽速度验证了南鹦哥和B. microphylla之间具有合理互惠共生的假设。因为消化和非消化种子发芽能力的差异,我们假设通过传播者的肠道传代作用可能打破种子的生理休眠。我们的研究结果强调了在具有高度季节性的环境下,具有生理休眠的植物物种中与动物内携传播的相关作用。
Fil: Bravo, Carolina. Consejo Superior de Investigaciones Científicas; España. Museo Nacional de Ciencias Naturales; España
Fil: Chamorro, Daniel. Consejo Superior de Investigaciones Científicas; España. Universidad de Castilla-La Mancha; España
Fil: Hiraldo, Fernando. Consejo Superior de Investigaciones Científicas; España. Estación Biológica de Doñana; España
Fil: Speziale, Karina Lilian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Lambertucci, Sergio Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Tella, José L.. Estación Biológica de Doñana; España. Consejo Superior de Investigaciones Científicas; España
Fil: Blanco, Guillermo. Consejo Superior de Investigaciones Científicas; España. Museo Nacional de Ciencias Naturales; España
Materia
AUSTRAL FOREST
GERMINABILITY
GERMINATION SUCCESS
GUT PASSAGE
MUTUALISM
SEED DISPERSAL
VIABILITY
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:11336/152542

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oai_identifier_str oai:ri.conicet.gov.ar:11336/152542
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network_name_str CONICET Digital (CONICET)
spelling Physiological dormancy broken by endozoochory: Austral parakeets (Enicognathus ferrugineus) as legitimate dispersers of calafate (Berberis microphylla) in the Patagonian AndesBravo, CarolinaChamorro, DanielHiraldo, FernandoSpeziale, Karina LilianLambertucci, Sergio AgustinTella, José L.Blanco, GuillermoAUSTRAL FORESTGERMINABILITYGERMINATION SUCCESSGUT PASSAGEMUTUALISMSEED DISPERSALVIABILITYhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Aims: Seed dispersal by endozoochory is an important process in plant regeneration and the establishment of new populations. Seeds with dormancy may especially benefit after disperser gut passage. However, the ways in which gut passage affect the germination of plant species with physiological dormancy remain unclear. Here, we experimentally assessed the mutualistic interaction between the Austral parakeet (Enicognathus ferrugineus) as a disperser of calafate (Berberis microphylla), a thorny bush inhabiting the understory of the Austral temperate forests of South America with seeds that are characterized by deep physiological dormancy. Methods: Germination success and viability of calafate seeds obtained from faeces and from intact fruits were tested under four treatments: (i) digested seeds, (ii) digested seeds with faecal extract, (iii) intact seeds from fruit and (iv) intact seeds from fruit with pulp. Important Findings: About 65% of the Austral parakeet droppings contained calafate seeds. Viability of seeds did not differ between treatments. However, germination was significantly higher in digested seeds than in intact seeds from fruits, while no difference was found between faecal and pulp extracts. Neither faecal matter nor fruit pulp provided seeds with any ecological advantages derived from enhancing germinability, but did confer some disadvantage in germination time. Faecal matter is expected to be completely lacking around seeds after several months under snow before germinating in the following spring, given intense washing due to persistent rain and the spring thaw in the Patagonian Andes. The higher germinability along with faster germination of digested seeds supports the hypothesis of a legitimate mutualistic interaction between Austral parakeets and calafate. We hypothesized that the passage through the disperser digestive tract might break physiological dormancy as differences in germinability between ingested and non-ingested seeds. Our results highlight the relevant role of endozoochory in plant species with physiological dormancy living in highly seasonal environments.种子由动物内携传播是植物再生和新种群建立的重要过程。具有休眠的种子经过传播者肠道传代作用后可能特别受益。然而,肠道 传代作用如何影响具有生理休眠植物的萌发尚不清楚。在本研究中,我们实验性地评估了南鹦哥(Enicognathus ferrugineus)作为小檗属植 物(Berberis microphylla)传播者的互惠共生。Berberis microphylla是一种多刺的灌木,栖息在南美洲温带森林的下层,其种子具有深度生 理休眠的特性。本研究通过四种处理:(1)种子消化处理,(2)粪便提取物消化处理,(3)果实种子完整处理和(4)包含果肉果实种子完整 处理,测定了从粪便和完整果实中提取的B. microphylla种子的发芽成功率和活力。研究结果表明,大约65%的南鹦哥的粪便中含有B. microphylla种子。不同处理的种子存活率无显著差异。然而,消化后的种子萌发率显著高于完整果实种子,而粪便和果肉提取物处理之间没有差异。粪便和果肉都没有为种子提供任何提高发芽能力的生态优势,但在萌发时间上确实造成了一些劣势。由于持续降雨和巴塔哥尼亚安第斯山脉春季融雪带来的严重冲刷,种子附近的粪便在雪下几个月后就会完全缺失。消化种子较高的发芽能力和较快的发芽速度验证了南鹦哥和B. microphylla之间具有合理互惠共生的假设。因为消化和非消化种子发芽能力的差异,我们假设通过传播者的肠道传代作用可能打破种子的生理休眠。我们的研究结果强调了在具有高度季节性的环境下,具有生理休眠的植物物种中与动物内携传播的相关作用。Fil: Bravo, Carolina. Consejo Superior de Investigaciones Científicas; España. Museo Nacional de Ciencias Naturales; EspañaFil: Chamorro, Daniel. Consejo Superior de Investigaciones Científicas; España. Universidad de Castilla-La Mancha; EspañaFil: Hiraldo, Fernando. Consejo Superior de Investigaciones Científicas; España. Estación Biológica de Doñana; EspañaFil: Speziale, Karina Lilian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Lambertucci, Sergio Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Tella, José L.. Estación Biológica de Doñana; España. Consejo Superior de Investigaciones Científicas; EspañaFil: Blanco, Guillermo. Consejo Superior de Investigaciones Científicas; España. Museo Nacional de Ciencias Naturales; EspañaOxford University Press2020-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/152542Bravo, Carolina; Chamorro, Daniel; Hiraldo, Fernando; Speziale, Karina Lilian; Lambertucci, Sergio Agustin; et al.; Physiological dormancy broken by endozoochory: Austral parakeets (Enicognathus ferrugineus) as legitimate dispersers of calafate (Berberis microphylla) in the Patagonian Andes; Oxford University Press; Journal of Plant Ecology-uk; 13; 5; 7-2020; 538-5441752-99211752-993XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/jpe/rtaa041info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/jpe/article/13/5/538/5872557?login=falseinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:10:55Zoai:ri.conicet.gov.ar:11336/152542instacron: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 10:10:56.188CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Physiological dormancy broken by endozoochory: Austral parakeets (Enicognathus ferrugineus) as legitimate dispersers of calafate (Berberis microphylla) in the Patagonian Andes
title Physiological dormancy broken by endozoochory: Austral parakeets (Enicognathus ferrugineus) as legitimate dispersers of calafate (Berberis microphylla) in the Patagonian Andes
spellingShingle Physiological dormancy broken by endozoochory: Austral parakeets (Enicognathus ferrugineus) as legitimate dispersers of calafate (Berberis microphylla) in the Patagonian Andes
Bravo, Carolina
AUSTRAL FOREST
GERMINABILITY
GERMINATION SUCCESS
GUT PASSAGE
MUTUALISM
SEED DISPERSAL
VIABILITY
title_short Physiological dormancy broken by endozoochory: Austral parakeets (Enicognathus ferrugineus) as legitimate dispersers of calafate (Berberis microphylla) in the Patagonian Andes
title_full Physiological dormancy broken by endozoochory: Austral parakeets (Enicognathus ferrugineus) as legitimate dispersers of calafate (Berberis microphylla) in the Patagonian Andes
title_fullStr Physiological dormancy broken by endozoochory: Austral parakeets (Enicognathus ferrugineus) as legitimate dispersers of calafate (Berberis microphylla) in the Patagonian Andes
title_full_unstemmed Physiological dormancy broken by endozoochory: Austral parakeets (Enicognathus ferrugineus) as legitimate dispersers of calafate (Berberis microphylla) in the Patagonian Andes
title_sort Physiological dormancy broken by endozoochory: Austral parakeets (Enicognathus ferrugineus) as legitimate dispersers of calafate (Berberis microphylla) in the Patagonian Andes
dc.creator.none.fl_str_mv Bravo, Carolina
Chamorro, Daniel
Hiraldo, Fernando
Speziale, Karina Lilian
Lambertucci, Sergio Agustin
Tella, José L.
Blanco, Guillermo
author Bravo, Carolina
author_facet Bravo, Carolina
Chamorro, Daniel
Hiraldo, Fernando
Speziale, Karina Lilian
Lambertucci, Sergio Agustin
Tella, José L.
Blanco, Guillermo
author_role author
author2 Chamorro, Daniel
Hiraldo, Fernando
Speziale, Karina Lilian
Lambertucci, Sergio Agustin
Tella, José L.
Blanco, Guillermo
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv AUSTRAL FOREST
GERMINABILITY
GERMINATION SUCCESS
GUT PASSAGE
MUTUALISM
SEED DISPERSAL
VIABILITY
topic AUSTRAL FOREST
GERMINABILITY
GERMINATION SUCCESS
GUT PASSAGE
MUTUALISM
SEED DISPERSAL
VIABILITY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Aims: Seed dispersal by endozoochory is an important process in plant regeneration and the establishment of new populations. Seeds with dormancy may especially benefit after disperser gut passage. However, the ways in which gut passage affect the germination of plant species with physiological dormancy remain unclear. Here, we experimentally assessed the mutualistic interaction between the Austral parakeet (Enicognathus ferrugineus) as a disperser of calafate (Berberis microphylla), a thorny bush inhabiting the understory of the Austral temperate forests of South America with seeds that are characterized by deep physiological dormancy. Methods: Germination success and viability of calafate seeds obtained from faeces and from intact fruits were tested under four treatments: (i) digested seeds, (ii) digested seeds with faecal extract, (iii) intact seeds from fruit and (iv) intact seeds from fruit with pulp. Important Findings: About 65% of the Austral parakeet droppings contained calafate seeds. Viability of seeds did not differ between treatments. However, germination was significantly higher in digested seeds than in intact seeds from fruits, while no difference was found between faecal and pulp extracts. Neither faecal matter nor fruit pulp provided seeds with any ecological advantages derived from enhancing germinability, but did confer some disadvantage in germination time. Faecal matter is expected to be completely lacking around seeds after several months under snow before germinating in the following spring, given intense washing due to persistent rain and the spring thaw in the Patagonian Andes. The higher germinability along with faster germination of digested seeds supports the hypothesis of a legitimate mutualistic interaction between Austral parakeets and calafate. We hypothesized that the passage through the disperser digestive tract might break physiological dormancy as differences in germinability between ingested and non-ingested seeds. Our results highlight the relevant role of endozoochory in plant species with physiological dormancy living in highly seasonal environments.
种子由动物内携传播是植物再生和新种群建立的重要过程。具有休眠的种子经过传播者肠道传代作用后可能特别受益。然而,肠道 传代作用如何影响具有生理休眠植物的萌发尚不清楚。在本研究中,我们实验性地评估了南鹦哥(Enicognathus ferrugineus)作为小檗属植 物(Berberis microphylla)传播者的互惠共生。Berberis microphylla是一种多刺的灌木,栖息在南美洲温带森林的下层,其种子具有深度生 理休眠的特性。本研究通过四种处理:(1)种子消化处理,(2)粪便提取物消化处理,(3)果实种子完整处理和(4)包含果肉果实种子完整 处理,测定了从粪便和完整果实中提取的B. microphylla种子的发芽成功率和活力。研究结果表明,大约65%的南鹦哥的粪便中含有B. microphylla种子。不同处理的种子存活率无显著差异。然而,消化后的种子萌发率显著高于完整果实种子,而粪便和果肉提取物处理之间没有差异。粪便和果肉都没有为种子提供任何提高发芽能力的生态优势,但在萌发时间上确实造成了一些劣势。由于持续降雨和巴塔哥尼亚安第斯山脉春季融雪带来的严重冲刷,种子附近的粪便在雪下几个月后就会完全缺失。消化种子较高的发芽能力和较快的发芽速度验证了南鹦哥和B. microphylla之间具有合理互惠共生的假设。因为消化和非消化种子发芽能力的差异,我们假设通过传播者的肠道传代作用可能打破种子的生理休眠。我们的研究结果强调了在具有高度季节性的环境下,具有生理休眠的植物物种中与动物内携传播的相关作用。
Fil: Bravo, Carolina. Consejo Superior de Investigaciones Científicas; España. Museo Nacional de Ciencias Naturales; España
Fil: Chamorro, Daniel. Consejo Superior de Investigaciones Científicas; España. Universidad de Castilla-La Mancha; España
Fil: Hiraldo, Fernando. Consejo Superior de Investigaciones Científicas; España. Estación Biológica de Doñana; España
Fil: Speziale, Karina Lilian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Lambertucci, Sergio Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Tella, José L.. Estación Biológica de Doñana; España. Consejo Superior de Investigaciones Científicas; España
Fil: Blanco, Guillermo. Consejo Superior de Investigaciones Científicas; España. Museo Nacional de Ciencias Naturales; España
description Aims: Seed dispersal by endozoochory is an important process in plant regeneration and the establishment of new populations. Seeds with dormancy may especially benefit after disperser gut passage. However, the ways in which gut passage affect the germination of plant species with physiological dormancy remain unclear. Here, we experimentally assessed the mutualistic interaction between the Austral parakeet (Enicognathus ferrugineus) as a disperser of calafate (Berberis microphylla), a thorny bush inhabiting the understory of the Austral temperate forests of South America with seeds that are characterized by deep physiological dormancy. Methods: Germination success and viability of calafate seeds obtained from faeces and from intact fruits were tested under four treatments: (i) digested seeds, (ii) digested seeds with faecal extract, (iii) intact seeds from fruit and (iv) intact seeds from fruit with pulp. Important Findings: About 65% of the Austral parakeet droppings contained calafate seeds. Viability of seeds did not differ between treatments. However, germination was significantly higher in digested seeds than in intact seeds from fruits, while no difference was found between faecal and pulp extracts. Neither faecal matter nor fruit pulp provided seeds with any ecological advantages derived from enhancing germinability, but did confer some disadvantage in germination time. Faecal matter is expected to be completely lacking around seeds after several months under snow before germinating in the following spring, given intense washing due to persistent rain and the spring thaw in the Patagonian Andes. The higher germinability along with faster germination of digested seeds supports the hypothesis of a legitimate mutualistic interaction between Austral parakeets and calafate. We hypothesized that the passage through the disperser digestive tract might break physiological dormancy as differences in germinability between ingested and non-ingested seeds. Our results highlight the relevant role of endozoochory in plant species with physiological dormancy living in highly seasonal environments.
publishDate 2020
dc.date.none.fl_str_mv 2020-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/152542
Bravo, Carolina; Chamorro, Daniel; Hiraldo, Fernando; Speziale, Karina Lilian; Lambertucci, Sergio Agustin; et al.; Physiological dormancy broken by endozoochory: Austral parakeets (Enicognathus ferrugineus) as legitimate dispersers of calafate (Berberis microphylla) in the Patagonian Andes; Oxford University Press; Journal of Plant Ecology-uk; 13; 5; 7-2020; 538-544
1752-9921
1752-993X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/152542
identifier_str_mv Bravo, Carolina; Chamorro, Daniel; Hiraldo, Fernando; Speziale, Karina Lilian; Lambertucci, Sergio Agustin; et al.; Physiological dormancy broken by endozoochory: Austral parakeets (Enicognathus ferrugineus) as legitimate dispersers of calafate (Berberis microphylla) in the Patagonian Andes; Oxford University Press; Journal of Plant Ecology-uk; 13; 5; 7-2020; 538-544
1752-9921
1752-993X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1093/jpe/rtaa041
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/jpe/article/13/5/538/5872557?login=false
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
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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