Population dynamics of Antarctophthirus microchir (Anoplura: Echinophthiriidae) in pups from South American sea lion, Otaria flavescens, in Northern Patagonia
We analysed population dynamics of the louse Antarctophthirus microchir in pups of the South American sea lion, Otaria flavescens, at the Punta León rookery (Argentina) over a period of 2 years. A total of 136 pups were aged and marked at the beginning of the lactation period ashore, then sampled fo...
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ftconicet:oai:ri.conicet.gov.ar:11336/95599 2023-10-09T21:47:15+02:00 Population dynamics of Antarctophthirus microchir (Anoplura: Echinophthiriidae) in pups from South American sea lion, Otaria flavescens, in Northern Patagonia Aznar Avendaño, Francisco Javier Leonardi, María Soledad Beron Vera, Barbara Vales, Damián Gustavo Ameghino, Santiago Pedro Raga, J. A. Crespo, Enrique Alberto application/pdf http://hdl.handle.net/11336/95599 eng eng Cambridge University Press info:eu-repo/semantics/altIdentifier/doi/10.1017/S0031182008005441 info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/parasitology/article/population-dynamics-of-antarctophthirus-microchir-anoplura-echinophthiriidae-in-pups-from-south-american-sea-lion-otaria-flavescens-in-northern-patagonia/7BB2CA9A6C2973BA2533D2AC0C67F18A http://hdl.handle.net/11336/95599 Aznar Avendaño, Francisco Javier; Leonardi, María Soledad; Beron Vera, Barbara; Vales, Damián Gustavo; Ameghino, Santiago Pedro; et al.; Population dynamics of Antarctophthirus microchir (Anoplura: Echinophthiriidae) in pups from South American sea lion, Otaria flavescens, in Northern Patagonia; Cambridge University Press; Parasitology; 136; 3; 3-2009; 293-303 0031-1820 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ANOPLURA ECHINOPHTHIRIIDAE LIFE CYCLE SOUTH AMERICAN SEA LION TRADE-OFF https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1017/S0031182008005441 2023-09-24T18:35:55Z We analysed population dynamics of the louse Antarctophthirus microchir in pups of the South American sea lion, Otaria flavescens, at the Punta León rookery (Argentina) over a period of 2 years. A total of 136 pups were aged and marked at the beginning of the lactation period ashore, then sampled for lice at different times within 30 days. Sampling was restricted to the chest and belly, two sites where lice were especially abundant. This concentration on ventral areas might protect lice from thermal stress in the austral summer. Infestation patterns in pups ≤3 days old suggested that the potential for transmission increased from first nymphs to adults. Population trends of each instar with pup age, based on standardised values of abundance, were conserved between years, reflecting the basic dynamics of recruitment and reproduction. However, trends based on log-transformed abundances varied significantly between years; apparently, environmental conditions affected growth of lice populations differently each year. Stage-based deterministic models for population growth of A. microchir suggested generation times from 18 to 23 days. Accordingly, only 2 lice generations might be produced before pups start going to the sea. Shortening the cycle to accommodate a third generation might be risky, whereas a 2-generation cycle might at least result in larger females producing higher numbers of viable offspring. Fil: Aznar Avendaño, Francisco Javier. Institut Cavanilles de Biodiversitat I Biologia Evolutiva; Fil: Leonardi, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina Fil: Beron Vera, Barbara. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina Fil: Vales, Damián Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina Fil: Ameghino, Santiago Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina Fil: ... Article in Journal/Newspaper Antarc* CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Austral Patagonia Argentina Gustavo ENVELOPE(-62.917,-62.917,-64.833,-64.833) The Louse ENVELOPE(-56.415,-56.415,51.700,51.700) Parasitology 136 3 293 303 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ANOPLURA ECHINOPHTHIRIIDAE LIFE CYCLE SOUTH AMERICAN SEA LION TRADE-OFF https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
ANOPLURA ECHINOPHTHIRIIDAE LIFE CYCLE SOUTH AMERICAN SEA LION TRADE-OFF https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Aznar Avendaño, Francisco Javier Leonardi, María Soledad Beron Vera, Barbara Vales, Damián Gustavo Ameghino, Santiago Pedro Raga, J. A. Crespo, Enrique Alberto Population dynamics of Antarctophthirus microchir (Anoplura: Echinophthiriidae) in pups from South American sea lion, Otaria flavescens, in Northern Patagonia |
topic_facet |
ANOPLURA ECHINOPHTHIRIIDAE LIFE CYCLE SOUTH AMERICAN SEA LION TRADE-OFF https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
We analysed population dynamics of the louse Antarctophthirus microchir in pups of the South American sea lion, Otaria flavescens, at the Punta León rookery (Argentina) over a period of 2 years. A total of 136 pups were aged and marked at the beginning of the lactation period ashore, then sampled for lice at different times within 30 days. Sampling was restricted to the chest and belly, two sites where lice were especially abundant. This concentration on ventral areas might protect lice from thermal stress in the austral summer. Infestation patterns in pups ≤3 days old suggested that the potential for transmission increased from first nymphs to adults. Population trends of each instar with pup age, based on standardised values of abundance, were conserved between years, reflecting the basic dynamics of recruitment and reproduction. However, trends based on log-transformed abundances varied significantly between years; apparently, environmental conditions affected growth of lice populations differently each year. Stage-based deterministic models for population growth of A. microchir suggested generation times from 18 to 23 days. Accordingly, only 2 lice generations might be produced before pups start going to the sea. Shortening the cycle to accommodate a third generation might be risky, whereas a 2-generation cycle might at least result in larger females producing higher numbers of viable offspring. Fil: Aznar Avendaño, Francisco Javier. Institut Cavanilles de Biodiversitat I Biologia Evolutiva; Fil: Leonardi, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina Fil: Beron Vera, Barbara. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina Fil: Vales, Damián Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina Fil: Ameghino, Santiago Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina Fil: ... |
format |
Article in Journal/Newspaper |
author |
Aznar Avendaño, Francisco Javier Leonardi, María Soledad Beron Vera, Barbara Vales, Damián Gustavo Ameghino, Santiago Pedro Raga, J. A. Crespo, Enrique Alberto |
author_facet |
Aznar Avendaño, Francisco Javier Leonardi, María Soledad Beron Vera, Barbara Vales, Damián Gustavo Ameghino, Santiago Pedro Raga, J. A. Crespo, Enrique Alberto |
author_sort |
Aznar Avendaño, Francisco Javier |
title |
Population dynamics of Antarctophthirus microchir (Anoplura: Echinophthiriidae) in pups from South American sea lion, Otaria flavescens, in Northern Patagonia |
title_short |
Population dynamics of Antarctophthirus microchir (Anoplura: Echinophthiriidae) in pups from South American sea lion, Otaria flavescens, in Northern Patagonia |
title_full |
Population dynamics of Antarctophthirus microchir (Anoplura: Echinophthiriidae) in pups from South American sea lion, Otaria flavescens, in Northern Patagonia |
title_fullStr |
Population dynamics of Antarctophthirus microchir (Anoplura: Echinophthiriidae) in pups from South American sea lion, Otaria flavescens, in Northern Patagonia |
title_full_unstemmed |
Population dynamics of Antarctophthirus microchir (Anoplura: Echinophthiriidae) in pups from South American sea lion, Otaria flavescens, in Northern Patagonia |
title_sort |
population dynamics of antarctophthirus microchir (anoplura: echinophthiriidae) in pups from south american sea lion, otaria flavescens, in northern patagonia |
publisher |
Cambridge University Press |
url |
http://hdl.handle.net/11336/95599 |
long_lat |
ENVELOPE(-62.917,-62.917,-64.833,-64.833) ENVELOPE(-56.415,-56.415,51.700,51.700) |
geographic |
Austral Patagonia Argentina Gustavo The Louse |
geographic_facet |
Austral Patagonia Argentina Gustavo The Louse |
genre |
Antarc* |
genre_facet |
Antarc* |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/S0031182008005441 info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/parasitology/article/population-dynamics-of-antarctophthirus-microchir-anoplura-echinophthiriidae-in-pups-from-south-american-sea-lion-otaria-flavescens-in-northern-patagonia/7BB2CA9A6C2973BA2533D2AC0C67F18A http://hdl.handle.net/11336/95599 Aznar Avendaño, Francisco Javier; Leonardi, María Soledad; Beron Vera, Barbara; Vales, Damián Gustavo; Ameghino, Santiago Pedro; et al.; Population dynamics of Antarctophthirus microchir (Anoplura: Echinophthiriidae) in pups from South American sea lion, Otaria flavescens, in Northern Patagonia; Cambridge University Press; Parasitology; 136; 3; 3-2009; 293-303 0031-1820 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1017/S0031182008005441 |
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Parasitology |
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136 |
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1779310214117326848 |