Results 81 to 90 of about 2,495 (194)

Some models of ecogeographic speciation explaining the herpetological diversity of the Andean-Patagonian region [PDF]

open access: yes, 2003
Se analizan cuatro modelos de especiación geográfica en el área andino-patagónica. Un primer y simple modelo involucra las mesetas basálticas aisladas a través del territorio extra-andino, las que han soportado desde el Terciario Tardío prolongados ...
Cei, José M.   +2 more
core  

Molecular phylogenetic relationships of the Liolaemus rothi complex and a new species of lizard from Auca Mahuida Volcano (Squamata: Liolaemini) [PDF]

open access: yes, 2013
A new species of lizard of the genus Liolaemus from Neuquén Province, western Argentina, is described. The new species is a member of the Liolaemus rothi species complex, and mitochondrial and nuclear molecular data show it as sister taxon of the clade ...
Avila, Luciano Javier   +4 more
core   +2 more sources

Miología craneal de Tropidurus melanopleurus (Squamata: tropiduridae)

open access: yes, 1997
Se describe la musculatura craneal de Tropidurus melanopleurus. La misma coincide en general con la exhibida por otros Tropiduridae, para los cuales se ha postulado poseen un patrón miológico común que a la vez formaría parte de uno generalizado asignable a otros iguanios. Se destacan sin embargo como características propias para T.
Marcus, Alicia Rosa   +1 more
openaire   +1 more source

Morphological differences and taxonomic status of the sympatric species liolaemus coeruleus y liolaemus neuquensis (Reptilia: Iguania: Liolaemidae) [PDF]

open access: yes, 2007
Dos especies simpátricas de saurios (Liolaemus coeruleus y Liolaemus neuquensis) son estudiadas, con el objetivo de identificar variables morfométricas y merísticas para su diferenciación. Se analizaron ejemplares recién colectados de cada especie (n= 28
Marcus, A.   +3 more
core  

Allozyme Divergence in Two Syntopic Liolaemus of the Liolaemus monticola Group (Squamata: Tropiduridae)

open access: yesJournal of Herpetology, 2003
Abstract Genetic divergence between two traditionally recognized subspecies, Liolaemus monticola chillanensis and Liolaemus monticola ssp., was assessed by allozymic comparison. Both morphotypes are syntopic and restricted to the mountains of the Cordillera de Chillan.
Torres-Pérez, Fernando   +3 more
openaire   +3 more sources

Orientation to the sun by animals and its interaction with crypsis [PDF]

open access: yes, 2015
1. Orientation with respect to the sun has been observed in a wide range of species and hasgenerally been interpreted in terms of thermoregulation and/or ultraviolet (UV) protection. For countershaded animals, orientation with respect to the sun may also
Cuthill, Innes C.   +4 more
core   +6 more sources

Herpetofauna de la Reserva Natural Provincial Isla Apipé Grande (Corrientes, Argentina) [PDF]

open access: yes, 2014
La información sobre biodiversidad es imprescindible para conocer y valorar el patrimonio natural de una región, especialmente para tomar decisiones correctas orientadas a la conservación de su biota (Aceñolaza et al., 2004).
Acosta, José Luis   +6 more
core   +1 more source

Sex Ratio and Sexual Size Dimorphism in a Toad-headed Lizard, Phrynocephalus guinanensis [PDF]

open access: yes, 2018
Phrynocephalus guinanensis has sexual dimorphism in abdominal coloration, but its ontogenetic development of sexual size dimorphism (SSD) is unknown. Using mark-recapture data during four days each year from August from 2014 to 2016, we investigated the ...
Haojie TONG   +4 more
core   +1 more source

Ecology and parasitism of the lizard Tropidurus jaguaribanus (Squamata: Tropiduridae) from northeastern Brazil

open access: yesPhyllomedusa: Journal of Herpetology, 2018
Ecology and parasitism of the lizard Tropidurus jaguaribanus (Squamata: Tropiduridae) from northeastern Brazil. Specimens of Tropidurus jaguaribanus were collected as part of a study of their use of microhabitats, activity period, body temperature, diet,
Edna P. Alcantara   +4 more
doaj  

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