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Authordc.contributor.authorCanals Lambarri, Mauricio 
Authordc.contributor.authorVeloso Iriarte, Claudio 
Authordc.contributor.authorSolís Muñoz, Rigoberto 
Admission datedc.date.accessioned2015-11-27T14:31:30Z
Available datedc.date.available2015-11-27T14:31:30Z
Publication datedc.date.issued2015
Cita de ítemdc.identifier.citationFrontiers in Physiology Volumen: 6 Número de artículo: 222 (2015)en_US
Identifierdc.identifier.otherDOI: 10.3389/fphys.2015.00220
Identifierdc.identifier.urihttps://repositorio.uchile.cl/handle/2250/135296
General notedc.descriptionArtículo de publicación ISIen_US
Abstractdc.description.abstractSpiders are small arthropods that have colonized terrestrial environments. These impose three main problems: (i) terrestrial habitats have large fluctuations in temperature and humidity; (ii) the internal concentration of water is higher than the external environment in spiders, which exposes them continually to water loss; and (iii) their small body size determines a large surface/volume ratio, affecting energy exchange and influencing the life strategy. In this review we focus on body design, energetic, thermal selection, and water balance characteristics of some spider species present in Chile and correlate our results with ecological and behavioral information. Preferred temperatures and critical temperatures of Chilean spiders vary among species and individuals and may be adjusted by phenotypic plasticity. For example in the mygalomorph high-altitude spider Paraphysa parvula the preferred temperature is similar to that of the lowland spider Grammostola rosea; but while P parvula shows phenotypic plasticity, G. rosea does not. The araneomorph spiders Loxosceles laeta and Scytodes globula have greater daily variations in preferred temperatures at twilight and during the night, which are set to the nocturnal activity rhythms of these species. They also present acclimation of the minimum critical temperatures. Dysdera crocata has a low preferred temperature adjusted to its favorite prey, the woodlouse. Spider metabolic rate is low compared to other arthropods, which may be associated with its sit and wait predatory strategy particularly in primitive hunter and weavers. In mygalomorph spiders the respiratory system is highly optimized with high oxygen conductance, for example G. rosea needs only a difference of 0.12-0.16 kPa in the oxygen partial pressure across the air-hemolymph barrier to satisfy its resting oxygen consumption demands. Water loss is a significant stress for spiders. Paraphysa parvula shows an evaporative water loss 10 times more than usual when the temperature approaches 40 degrees C and the participation of book lungs in this loss is about 60%. This species and others show seasonal changes in water loss accounted for by changes in cuticle permeability. The case of Chilean spiders shows how the ecophysiology in spiders is associated to their design and body size and how is affected by fluctuating Mediterranean environments, suggesting that the adaptive process can be seen as a route of optimizing the use of energy to cope with environmental restrictions imposed by the interaction with the terrestrial environment and lifestyle.en_US
Patrocinadordc.description.sponsorshipFONDECYT 1110058 1150514en_US
Lenguagedc.language.isoenen_US
Publisherdc.publisherFrontiers Media S.A.en_US
Type of licensedc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
Keywordsdc.subjectSpidersen_US
Keywordsdc.subjectEcophysiologyen_US
Keywordsdc.subjectEnergeticsen_US
Keywordsdc.subjectMediterranean regionen_US
Keywordsdc.subjectLungen_US
Títulodc.titleAdaptation of the spiders to the environment: the case of some Chilean speciesen_US
Document typedc.typeArtículo de revista


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Atribución-NoComercial-SinDerivadas 3.0 Chile
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 Chile