Participation of book lungs in evaporative water loss in Paraphysa parvula, a migalomorph spider from Chilean Andes

Figueroa, Diego; Sabat, Pablo; Torres-Contreras, Hugo; Veloso, Claudio; Canals, Mauricio

doi:10.1016/j.jinsphys.2010.01.001

Cited by 20 publications

(21 citation statements)

References 20 publications

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“…The upper limit of preferred temperature (approximately 37 °C) is lower than the temperature at which water loss increases sharply in this species (40 °C) (Figueroa et al ., 2010) and, as expected, is lower than the maximum critical temperature (i.e. the maximum temperature at which an animal can display coordinated locomotory behaviour) as reported for Aphonopelma sp.…”

Section: Discussionmentioning

confidence: 97%

“…Conduction from the environment, heat transfer by small convection currents and radiation from hot stones all allow spiders to maintain a physiologically appropriate temperature. In this context, the selection of shelters that meet specific temperature conditions appears to be a key condition for the optimization of female reproductive success and the survival of females and juveniles (Schmalhofer, 1999; Canals et al ., 2007; Figueroa et al ., 2010; Veloso et al ., 2012). The species in the present study show preferred temperatures in the range of those reported for other mygalomorph spiders.…”

Section: Discussionmentioning

confidence: 99%

“…It is striking that the maximum ranges for both mygalomorph species under both conditions of acclimation are very similar, and the maximum physiological tolerance ranges are possibly not affected. In P. parvula , stress conditions from loss of water are manifest above 30 °C, and specimens of this species can be found at 37 °C in the wild (Figueroa et al ., 2010; Veloso et al ., 2012). Under normal feeding conditions, G. rosea does not show an apparent physiological distress at temperatures of 30 °C (Canals et al ., 2008).…”

Section: Discussionmentioning

confidence: 99%

“…Mygalomorph spiders are ectotherm predators that depend upon thermal micro‐environments for energy saving, reproduction and capture of their prey (Greenstone & Bennett, 1980; Humphreys, 1987; Schmalhofer, 1999; Canals et al , 2007; Figueroa et al , 2010; Veloso et al , 2012). However, thermoregulatory behaviour, thermal tolerance and preferred temperatures are only studied in less than 1% of the species of spiders (Humphreys, 1987), and the species that inhabit temperate environments are less well known (Schmalhofer, 1999).…”

Section: Introductionmentioning

confidence: 99%

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Effect of thermal acclimation on preferred temperatures in two mygalomorph spiders inhabiting contrasting habitats

Alfaro

Figueroa

Torres

et al. 2012

Physiological Entomology

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Artículo de publicación ISIVariations in the preferred temperatures during the rest periods of Grammostola rosea Walckenaer and Paraphysa parvula Pocock, two mygalomorph spiders occupying different habitats in central Chile, are analyzed. The former inhabits arid and semi-arid lowland near plant communities, composed of shrubs (evergreens with small leathery leaves) and small trees; the latter is found in the central mountains of the Chilean Andes, above 2000 m.a.s.l. The preferred temperatures of these spiders at different times of day and exposure to cold (15 ◦C) and warm (25 ◦C) acclimation temperatures are compared. Body mass does not affect the preferred temperature of the larger spider G. rosea, although P. parvula, a spider with half of the body mass of G. rosea, shows a decrease in preferred temperature with body mass. This can be explained by a higher plasticity and thermal sensitivity of the smaller species as result of increased surface : volume ratio. The preferred temperature increases with the hour of the day under both acclimation conditions in P. parvula and in cold-acclimated G. rosea, which is likely associated with crepuscular and nocturnal behaviour in both species. Grammostola rosea shows temperature preferences lower than those of P. parvula under both acclimation conditions. The increase of the acclimation temperature from 15 to 25 ◦C results in an increment of 2–3 ◦C in the preferred temperature of P. parvula but only 0.2 ◦C in that of G. rosea. Two contrasting lifestyle strategies are found: a small mygalomorph spider with phenotypic plasticity and adaptation to the fluctuating environment of high altitude, and a large mygalomorph spider with higher thermal inertia adapted to the more stable environment of lowlands

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of thermal acclimation on preferred temperatures in two mygalomorph spiders inhabiting contrasting habitats

Alfaro

Figueroa

Torres

et al. 2012

Physiological Entomology

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show abstract

“…Their general appearance and behavior are very similar to those of P. parvula Pocock, 1903, the species to which they were previously thought to belong. [3][4][5] The Paraphysa sp. described in this article is found at altitudes above 2000 m, commonly under flat rocks 4,5 in environs dominated by low shrubs.…”

mentioning

confidence: 99%

Mealworm (Tenebrio molitor) Diets Relative to the Energy Requirements of Small Mygalomorph Spiders (Paraphysa sp.)

Canals

Figueroa

Torres-Contreras

et al. 2012

Journal of Exotic Pet Medicine

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Short‐range phenotypic divergence among genetically distinct parapatric populations of an Australian funnel‐web spider

Wong

Woodman

Rowell

2017

Ecology and Evolution

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Speciation involves divergence at genetic and phenotypic levels. Where substantial genetic differentiation exists among populations, examining variation in multiple phenotypic characters may elucidate the mechanisms by which divergence and speciation unfold. Previous work on the Australian funnel-web spider Atrax sutherlandi Gray Atracinae) has revealed a marked genetic structure along a 110-kilometer transect, with six genetically distinct, parapatric populations attributable to past glacial cycles.In the present study, we explore variation in three classes of phenotypic characters (metabolic rate, water loss, and morphological traits) within the context of this phylogeographic structuring. Variation in metabolic and water loss rates shows no detectable association with genetic structure; the little variation observed in these rates may be due to the spiders' behavioral adaptations (i.e., burrowing), which buffer the effects of climatic gradients across the landscape. However, of 17 morphological traits measured, 10 show significant variation among genetic populations, in a disjunct manner that is clearly not latitudinal. Moreover, patterns of variation observed for morphological traits serving different organismic functions (e.g., prey capture, burrowing, and locomotion) are dissimilar. In contrast, a previous study of an ecologically similar sympatric spider with little genetic structure indicated a strong latitudinal response in 10 traits over the same range. The congruence of morphological variation with deep phylogeographic structure in Tallaganda's A. sutherlandi populations, as well as the inconsistent patterns of variation across separate functional traits, suggest that the spiders are likely in early stages of speciation, with parapatric populations independently responding to local selective forces. K E Y W O R D Sfunctional traits, mygalomorph, phylogeography, physiology, speciation, Tallaganda

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Participation of book lungs in evaporative water loss in Paraphysa parvula, a migalomorph spider from Chilean Andes

Cited by 20 publications

References 20 publications

Effect of thermal acclimation on preferred temperatures in two mygalomorph spiders inhabiting contrasting habitats

Effect of thermal acclimation on preferred temperatures in two mygalomorph spiders inhabiting contrasting habitats

Mealworm (Tenebrio molitor) Diets Relative to the Energy Requirements of Small Mygalomorph Spiders (Paraphysa sp.)

Short‐range phenotypic divergence among genetically distinct parapatric populations of an Australian funnel‐web spider

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