Daily thermal preference variation of the sand recluse spider Sicarius thomisoides (Araneae: Sicariidae)
Author
dc.contributor.author
Taucare Ríos, Andrés
Author
dc.contributor.author
Veloso, Claudio
Author
dc.contributor.author
Canals, Mauricio
Author
dc.contributor.author
Bustamante, Ramiro O.
Admission date
dc.date.accessioned
2020-04-23T15:52:49Z
Available date
dc.date.available
2020-04-23T15:52:49Z
Publication date
dc.date.issued
2020
Cita de ítem
dc.identifier.citation
Journal of Thermal Biology 87 (2020) 102465
es_ES
Identifier
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10.1016/j.jtherbio.2019.102465
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/174076
Abstract
dc.description.abstract
Preferential temperature as a physiological feature is crucial for spiders, since it determines the selection of key habitats for their survival and reproduction. In this work, we study the daily and geographical variation of the preferential temperature of the spider Sicarius thomisoides subjected to different degrees of daily thermal oscillation in their habitats. Preferred temperatures differ between coastal and inland populations, but in both cases, there is a marked bimodality in the daily pattern of temperature preference, with two peaks per day that would be given by the changes in the hours of activity. These nocturnal spiders select higher temperatures in the evening (active period) and select lower temperatures during late morning (resting period). In laboratory, spiders have preferred temperatures that differ from those found in their habitats, so they must tolerate or compensate non-preferred temperatures by active thermoregulation in natural conditions.