Mostrar el registro sencillo del ítem

dc.contributor.author
Leonardi, María Soledad  
dc.contributor.author
Lazzari, Claudio Ricardo  
dc.date.available
2017-07-21T18:00:37Z  
dc.date.issued
2014-11-07  
dc.identifier.citation
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  
dc.identifier.issn
0022-1910  
dc.identifier.uri
http://hdl.handle.net/11336/21094  
dc.description.abstract
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.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Amphibious Louse  
dc.subject
Antarctophthirus Microchir  
dc.subject
Otaria Flavescens  
dc.subject
South American Sea Lion  
dc.subject
Physiology  
dc.subject
Insects  
dc.subject
Diving  
dc.subject
Ectoparasites  
dc.subject.classification
Zoología, Ornitología, Entomología, Etología  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Uncovering deep mysteries: The underwater life of an amphibious louse  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2017-06-30T13:28:07Z  
dc.journal.volume
71  
dc.journal.pagination
164-169  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Leonardi, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina  
dc.description.fil
Fil: Lazzari, Claudio Ricardo. Université François Rabelais; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
dc.journal.title
Journal of Insect Physiology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jinsphys.2014.10.016  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S002219101400211X