Portal Orientation and Architecture of Burrows in Tympanoctomys Barrerae (Rodentia, Octodontidae)

Torres, Madison; Borghi, Carlos E.; Giannoni, Stella M.; Pattini, Andrea Elvira

doi:10.1644/1545-1542(2003)084<0541:poaaob>2.0.co;2

Cited by 10 publications

(13 citation statements)

References 13 publications

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“…air and soil temperature, surface-wind velocity, relative humidity, precipitation and direction of sunlight) as suggest by some studies (Kay & Whitford 1978, Best 1982, 1988, Baumgardner 1991, Torres et al 2003. The viscacha rat lives in crevices with numerous entrances (mean ± SE: 4.63 ± 0.42) facing different directions (Campos 2012); hence, air may flow inside crevices due to their complex structure, leading to similar temperature fl uctuations in the air inside and outside crevices.…”

Section: Thermal Gradient Inside Crevicesmentioning

confidence: 74%

Microhabitat selection by Octomys mimax (Rodentia: Octodontidae) in the Monte Desert is affected by attributes and thermal properties of crevices

Campos

Andino

Cappa

et al. 2013

Rev. chil. hist. nat.

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Section: Thermal Gradient Inside Crevicesmentioning

confidence: 74%

Microhabitat selection by Octomys mimax (Rodentia: Octodontidae) in the Monte Desert is affected by attributes and thermal properties of crevices

Campos

Andino

Cappa

et al. 2013

Rev. chil. hist. nat.

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“…The ecomorphological diversity of the Octodontidae appears associated with a geographic subdivision within the family, with fossorial and semifossorial forms (Spalacopus and Aconaemys), and the terrestrial generalist (Octodon) adapted to Mediterranean sclerophyllous woodlands and forests and semiarid open scrublands in central Chile, and saxicolous (Octomys) and semifossorial xeric adapted species (Tympanoctomys, Pipanacoctomys) inhabiting lowland aridlands in Argentina, and Octodontomys inhabiting pre-Andean Prepuna and Puna habitats in northern Argentina, southern Bolivia and north-eastern Chile (Contreras et al, 1987). This diversity of environmental conditions is accompanied by variation at physiological ), genetic (Gallardo, 1992, and behavioral (Giannoni, Borghi & Ojeda, 2000;Torres et al, 2003) levels. Different hypotheses regarding the role of major climate change during Plio-Pleistocene have been proposed to explain the distribution and ecological diversity of the family (Mares, 1975;Reig, 1986;Contreras et al, 1987;Honeycutt et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Geographical distribution and ecological diversification of South American octodontid rodents

et al. 2012

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Caviomorph rodents represent one of the most distinctive groups of mammals in southern South America drylands; they colonized South America from Africa via trans‐oceanic dispersions in the Eocene (40–50 Ma) and underwent an extraordinary ecological radiation after their arrival, thus making this group of great interest for biogeographic and evolutionary studies. The aim of this article was to provide a working hypothesis regarding the biogeographical history and ecological diversification of one of its conspicuous families, the Octodontidae. We reconstruct the evolutionary theater where their ecological diversification took place, and potential events of dispersal, vicariance and extinctions. We analyzed the historical biogeography of the Octodontidae across the eight ecoregions where they occur, based on species phylogeny and divergence times. Four approaches were used to reconstruct ancestral area: (1) Statistical Dispersal–Vicariance Snalysis (S‐DIVA); (2) Bayesian binary Markov chain Monte Carlo (MCMC) analysis implemented in Reconstruct Ancestral State in Phylogenies (RASP); (3) Fitch optimization method; and (d) weighted ancestral area analysis (WAAA). Parsimony ancestral state reconstructions were implemented in order to explore the evolutionary history of an ecological character, mode of life. We propose the northern portion of the Monte desert ecoregion as the ancestral area in the evolution of the Octodontidae, with subsequent dispersal and enlargement of the family geographic range. The evolution of their ecological specialization (i.e. modes of life) suggests an ambiguous ancestral condition (saxicolous, generalist terrestrial, semifossorial) linked to species adaptation to arid environments, with fossoriality appearing later in octodontid evolution. The evolution of the Octodontidae is associated with contrasting environmental conditions (i.e. climate and vegetation) produced by the Andean Uplift between eastern and western sides.

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“…Las ratas vizcacha construyen sistemas de madrigueras o cuevas en forma de montículos, con varias entradas conectadas por galerías internas a distintas profundidades (ojeda et al, 1996;Mares et al, 1997a;torres et al, 2003;teta et al, 2014;ojeda, 2016). Los primeros trabajos sobre la ecología de T. barrerae describieron que sus madrigueras cuentan con túneles de dos o tres niveles interconectados que dan lugar a cámaras centrales que servirían para el descanso y almacenamiento del alimento ( Fig.…”

Section: Hábitat Dieta Sistema De Cuevas Y Actividad Espacialunclassified

“…Así, se ha reportado un mayor número de entradas orientadas hacia la luz solar directa en la estación invernal e indirecta en verano (Fig. 2B;torres et al, 2003). Estudios en marcha en esta especie reportan una mayor proporción de entradas hacia el este, particularmente en la estación húmeda (tarquino et al, en prep.…”

Section: Hábitat Dieta Sistema De Cuevas Y Actividad Espacialunclassified

Tympanoctomys: 75 years of history Current state of knowledge of the genre

Ojeda

Tarquino-Carbonell

Ojeda

et al. 2018

MACN

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this contribution is a tribute to José Yepes on the 75th anniversary of his description of the genus Tympanoctomys, and the 90th anniversary of his admission to the Argentine Museum of natural Sciences "Bernardino rivadavia". Viscacha rats are the epitome of South American rodents adapted to desert habitats, and are a true model, not only to present different specialized attributes for life in xeric environments, but also as one of the mammals with the highest chromosomal number. In this chapter, we present an overview of the state of knowledge of the genus and related species, regarding aspects such as distribution, ecology, genetic and conservation. Perspectives focus on gaps and unresolved issues that are fascinating and promising research lines.

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Portal Orientation and Architecture of Burrows in Tympanoctomys Barrerae (Rodentia, Octodontidae)

Cited by 10 publications

References 13 publications

Microhabitat selection by Octomys mimax (Rodentia: Octodontidae) in the Monte Desert is affected by attributes and thermal properties of crevices

Microhabitat selection by Octomys mimax (Rodentia: Octodontidae) in the Monte Desert is affected by attributes and thermal properties of crevices

Geographical distribution and ecological diversification of South American octodontid rodents

Tympanoctomys: 75 years of history Current state of knowledge of the genre

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