Results 41 to 50 of about 1,489 (184)

Pulgas (Insecta: Siphonaptera) asociadas al marsupial neotropical amenazado “monito del monte” (Dromiciops gliroides Microbiotheria: Microbiotheriidae), en su población más austral de la Argentina [PDF]

open access: yes, 2018
Dromiciops, nocturnal marsupial genus endemic to the temperate forests of southern South America, is the only living representative of the Order Microbiotheria. Here we study the Siphonapteran fauna of Dromiciops gliroides ?monito del monte?
Gurovich, Yamila   +1 more
core  

New records of Tympanoctomys barrerae (Rodentia, Octodontidae) [PDF]

open access: yes, 2007
La rata vizcacha colorada, Tympanoctomys barrerae, presenta un rango geográfico reducido y ocurre a modo de parches poblacionales aislados y asociados a salares. En esta nota reportamos nuevos registros de distribución para las provincias de San Juan,
Gallardo Narcisi, Milton Hermes   +3 more
core  

The Impact of Digging on Craniodental Morphology and Integration [PDF]

open access: yes, 2016
The relationship between the form and function of the skull has been the subject of a great deal of research, much of which has concentrated on the impact of feeding on skull shape.
Adams   +76 more
core   +1 more source

Blood meal sources of wild and domestic Triatoma infestans (Hemiptera : Reduviidae) in Bolivia : connectivity between cycles of transmission of Trypanosoma cruzi [PDF]

open access: yes, 2016
Background: Chagas disease is a major public health problem in Latin America. Its etiologic agent, Trypanosoma cruzi, is mainly transmitted through the contaminated faeces of blood-sucking insects called triatomines. Triatoma infestans is the main vector
Aliaga, C.   +7 more
core   +3 more sources

Retinal cone photoreceptors of the deer mouse Peromyscus maniculatus : development, topography, opsin expression and spectral tuning [PDF]

open access: yes, 2013
A quantitative analysis of photoreceptor properties was performed in the retina of the nocturnal deer mouse, Peromyscus maniculatus, using pigmented (wildtype) and albino animals.
Arbogast, Patrick   +2 more
core   +2 more sources

Holocene distribution of Octodontid rodents in central Chile Distribución holocénica de roedores octodóntidos en Chile central

open access: yesRevista Chilena de Historia Natural, 2003
We describe the Holocene distribution of the Octodontids Aconaemys fuscus, Octodon bridgesi, O. degus, O. lunatus, O. pacificus and Spalacopus cyanus from Central Chile. We compared ancient and present day ranges.
BÁRBARA SAAVEDRA, JAVIER A SIMONETTI
doaj  

A glimpse on the pattern of rodent diversification: a phylogenetic approach. [PDF]

open access: yes, 2012
BACKGROUND: Development of phylogenetic methods that do not rely on fossils for the study of evolutionary processes through time have revolutionized the field of evolutionary biology and resulted in an unprecedented expansion of our knowledge about the ...
Dimitrov, Dimitar   +3 more
core   +4 more sources

Gametogenesis and nucleotypic effects in the tetraploid red vizcacha rat, Tympanoctomys barrerae (Rodentia, Octodontidae)

open access: yesBiological Research, 2004
Nucleotypic effects link DNA content with nuclear size and cell dimensions of reproductive cells in polyploid organisms. We studied the gametogenesis of the allotetraploid rodent Tympanoctomys barrerae, aiming to determine these effects in reproductive ...
MILTON H GALLARDO   +3 more
doaj  

Octodontidae Waterhouse 1840

open access: yes, 1993
Family Octodontidae Waterhouse, 1840. Proc. Zool. Soc. Lond., 1839:172 [1840]. SYNONYMS: Spalacopidae. COMMENTS: Includes Spalacopidae Lilljeborg, 1866. Sometimes considered the most primitive group of South American hystricognaths with numerous fossil genera from Oligocene on, but Reig (1986:418) reserved this distinction for the Echimyidae.
openaire   +1 more source

On cognitive ecology and the environmental factors that promote Alzheimer disease: lessons from Octodon degus (Rodentia: Octodontidae)

open access: yesBiological Research
Cognitive ecologist posits that the more efficiently an animal uses information from the biotic and abiotic environment, the more adaptive are its cognitive abilities.
Daniela S. Rivera   +2 more
doaj   +1 more source

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