Uncovering deep mysteries: The underwater life of an amphibious louse
- Autores
- Leonardi, María Soledad; Lazzari, Claudio Ricardo
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Despite the incredible success of insects in colonizing almost every habitat, they remain virtually absent in one major environment – the open sea. A variety of hypotheses have been raised to explain why just a few insect species are present in the ocean, but none of them appears to be fully explanatory. Lice belonging to the family Echinophthiriidae are ectoparasites on different species of pinnipeds and river otters, i.e. they have amphibious hosts, who regularly perform long excursions into the open sea reaching depths of hundreds of meters (thousands of feets). Consequently, lice must be able to support not only changes in their surrounding media, but also extreme variations in hydrostatic pressure as well as breathing in a low oxygen atmosphere. In order to shed some light on the way lice can survive during the diving excursions of their hosts, we have performed a series of experiments to test the survival capability of different instars of Antarctophthirus microchir (Phthiraptera: Anoplura) from South American sea lions Otaria flavescens, when submerged into seawater. These experiments were aimed at analyzing: (a) immersion tolerance along the louse life; (b) lice’s ability to obtain oxygen from seawater; (c) physiological responses and mechanisms involved in survival underwater. Our experiments showed that the forms present in nondiving pups – i.e. eggs and first-instar nymphs – were unable to tolerate immersion in water, while fol- lowing instars and adults, all usually found in diving hosts, supported it very well. Furthermore, as long as the level of oxygen dissolved in water was higher, the lice survival capability underwater increased, and the recovery period after returning to air declined. These results are discussed in relation to host ecology, host exploitation and lice functional morphology.
Fil: Leonardi, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Lazzari, Claudio Ricardo. Université François Rabelais; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina - Materia
-
Amphibious Louse
Antarctophthirus Microchir
Otaria Flavescens
South American Sea Lion
Physiology
Insects
Diving
Ectoparasites - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/21094
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Uncovering deep mysteries: The underwater life of an amphibious louseLeonardi, María SoledadLazzari, Claudio RicardoAmphibious LouseAntarctophthirus MicrochirOtaria FlavescensSouth American Sea LionPhysiologyInsectsDivingEctoparasiteshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Despite the incredible success of insects in colonizing almost every habitat, they remain virtually absent in one major environment – the open sea. A variety of hypotheses have been raised to explain why just a few insect species are present in the ocean, but none of them appears to be fully explanatory. Lice belonging to the family Echinophthiriidae are ectoparasites on different species of pinnipeds and river otters, i.e. they have amphibious hosts, who regularly perform long excursions into the open sea reaching depths of hundreds of meters (thousands of feets). Consequently, lice must be able to support not only changes in their surrounding media, but also extreme variations in hydrostatic pressure as well as breathing in a low oxygen atmosphere. In order to shed some light on the way lice can survive during the diving excursions of their hosts, we have performed a series of experiments to test the survival capability of different instars of Antarctophthirus microchir (Phthiraptera: Anoplura) from South American sea lions Otaria flavescens, when submerged into seawater. These experiments were aimed at analyzing: (a) immersion tolerance along the louse life; (b) lice’s ability to obtain oxygen from seawater; (c) physiological responses and mechanisms involved in survival underwater. Our experiments showed that the forms present in nondiving pups – i.e. eggs and first-instar nymphs – were unable to tolerate immersion in water, while fol- lowing instars and adults, all usually found in diving hosts, supported it very well. Furthermore, as long as the level of oxygen dissolved in water was higher, the lice survival capability underwater increased, and the recovery period after returning to air declined. These results are discussed in relation to host ecology, host exploitation and lice functional morphology.Fil: Leonardi, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Lazzari, Claudio Ricardo. Université François Rabelais; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier2014-11-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21094Leonardi, María Soledad; Lazzari, Claudio Ricardo; Uncovering deep mysteries: The underwater life of an amphibious louse; Elsevier; Journal of Insect Physiology; 71; 7-11-2014; 164-1690022-1910CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jinsphys.2014.10.016info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S002219101400211Xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:53:31Zoai:ri.conicet.gov.ar:11336/21094instacron: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:34982025-09-03 09:53:31.887CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Uncovering deep mysteries: The underwater life of an amphibious louse |
title |
Uncovering deep mysteries: The underwater life of an amphibious louse |
spellingShingle |
Uncovering deep mysteries: The underwater life of an amphibious louse Leonardi, María Soledad Amphibious Louse Antarctophthirus Microchir Otaria Flavescens South American Sea Lion Physiology Insects Diving Ectoparasites |
title_short |
Uncovering deep mysteries: The underwater life of an amphibious louse |
title_full |
Uncovering deep mysteries: The underwater life of an amphibious louse |
title_fullStr |
Uncovering deep mysteries: The underwater life of an amphibious louse |
title_full_unstemmed |
Uncovering deep mysteries: The underwater life of an amphibious louse |
title_sort |
Uncovering deep mysteries: The underwater life of an amphibious louse |
dc.creator.none.fl_str_mv |
Leonardi, María Soledad Lazzari, Claudio Ricardo |
author |
Leonardi, María Soledad |
author_facet |
Leonardi, María Soledad Lazzari, Claudio Ricardo |
author_role |
author |
author2 |
Lazzari, Claudio Ricardo |
author2_role |
author |
dc.subject.none.fl_str_mv |
Amphibious Louse Antarctophthirus Microchir Otaria Flavescens South American Sea Lion Physiology Insects Diving Ectoparasites |
topic |
Amphibious Louse Antarctophthirus Microchir Otaria Flavescens South American Sea Lion Physiology Insects Diving Ectoparasites |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Despite the incredible success of insects in colonizing almost every habitat, they remain virtually absent in one major environment – the open sea. A variety of hypotheses have been raised to explain why just a few insect species are present in the ocean, but none of them appears to be fully explanatory. Lice belonging to the family Echinophthiriidae are ectoparasites on different species of pinnipeds and river otters, i.e. they have amphibious hosts, who regularly perform long excursions into the open sea reaching depths of hundreds of meters (thousands of feets). Consequently, lice must be able to support not only changes in their surrounding media, but also extreme variations in hydrostatic pressure as well as breathing in a low oxygen atmosphere. In order to shed some light on the way lice can survive during the diving excursions of their hosts, we have performed a series of experiments to test the survival capability of different instars of Antarctophthirus microchir (Phthiraptera: Anoplura) from South American sea lions Otaria flavescens, when submerged into seawater. These experiments were aimed at analyzing: (a) immersion tolerance along the louse life; (b) lice’s ability to obtain oxygen from seawater; (c) physiological responses and mechanisms involved in survival underwater. Our experiments showed that the forms present in nondiving pups – i.e. eggs and first-instar nymphs – were unable to tolerate immersion in water, while fol- lowing instars and adults, all usually found in diving hosts, supported it very well. Furthermore, as long as the level of oxygen dissolved in water was higher, the lice survival capability underwater increased, and the recovery period after returning to air declined. These results are discussed in relation to host ecology, host exploitation and lice functional morphology. Fil: Leonardi, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina Fil: Lazzari, Claudio Ricardo. Université François Rabelais; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
description |
Despite the incredible success of insects in colonizing almost every habitat, they remain virtually absent in one major environment – the open sea. A variety of hypotheses have been raised to explain why just a few insect species are present in the ocean, but none of them appears to be fully explanatory. Lice belonging to the family Echinophthiriidae are ectoparasites on different species of pinnipeds and river otters, i.e. they have amphibious hosts, who regularly perform long excursions into the open sea reaching depths of hundreds of meters (thousands of feets). Consequently, lice must be able to support not only changes in their surrounding media, but also extreme variations in hydrostatic pressure as well as breathing in a low oxygen atmosphere. In order to shed some light on the way lice can survive during the diving excursions of their hosts, we have performed a series of experiments to test the survival capability of different instars of Antarctophthirus microchir (Phthiraptera: Anoplura) from South American sea lions Otaria flavescens, when submerged into seawater. These experiments were aimed at analyzing: (a) immersion tolerance along the louse life; (b) lice’s ability to obtain oxygen from seawater; (c) physiological responses and mechanisms involved in survival underwater. Our experiments showed that the forms present in nondiving pups – i.e. eggs and first-instar nymphs – were unable to tolerate immersion in water, while fol- lowing instars and adults, all usually found in diving hosts, supported it very well. Furthermore, as long as the level of oxygen dissolved in water was higher, the lice survival capability underwater increased, and the recovery period after returning to air declined. These results are discussed in relation to host ecology, host exploitation and lice functional morphology. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-11-07 |
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/11336/21094 Leonardi, María Soledad; Lazzari, Claudio Ricardo; Uncovering deep mysteries: The underwater life of an amphibious louse; Elsevier; Journal of Insect Physiology; 71; 7-11-2014; 164-169 0022-1910 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/21094 |
identifier_str_mv |
Leonardi, María Soledad; Lazzari, Claudio Ricardo; Uncovering deep mysteries: The underwater life of an amphibious louse; Elsevier; Journal of Insect Physiology; 71; 7-11-2014; 164-169 0022-1910 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jinsphys.2014.10.016 info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S002219101400211X |
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 |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
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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1842269231100461056 |
score |
13.13397 |