The eye-bulging in Liolaemus lizards (Weigmann 1843)
نویسندگان
چکیده
منابع مشابه
Evolution of the third eye: a phylogenetic comparative study of parietaleye size as an ecophysiological adaptation in Liolaemus lizards
The parietal, or third, eye is a photosensory organ situated in the middle of the skull of many lizards. Despite many hypotheses, its exact ecological functions are still unclear. Studies have compared the presence and absence of a functioning parietal eye, although there are no quantitative studies of parietal-eye traits in relation to ecology, physiology or behaviour. In the present study, we...
متن کاملBody size evolution in South American Liolaemus lizards of the boulengeri clade: a contrasting reassessment.
Bergmann's rule predicts larger body sizes in species living in higher latitudes and altitudes. This rule appears to be valid for endotherms, but its relevance to ectotherm vertebrates has largely been debated. In squamate reptiles (lizards and snakes), only one study, based on Liolaemus species of the boulengeri clade, has provided phylogenetic evidence in favour of Bergmann's clines. We reass...
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The body temperature of ectotherms depends on the environmental temperatures and behavioral adjustments, but morphology may also have an effect. For example, in colder environments, animals tend to be larger and to show higher thermal inertia, as proposed by Bergmann's rule and the heat balance hypothesis (HBH). Additionally, dark coloration increases solar radiation absorption and should accel...
متن کاملPlacental morphology in two sympatric Andean lizards of the genus Liolaemus (Reptilia: Liolaemidae).
Viviparity is a remarkable feature in squamate sauropsids and it has evolved multiple times in parallel with the formation of a placenta. One example of this repeated evolution of viviparity and placentation occurs in the species-rich South American genus Liolaemus with at least six independent origins of viviparity. However, evolutionary studies of placentation in this genus are limited by a l...
متن کاملTwo new Liolaemus lizards from the Andean highlands of Southern Chile (Squamata, Iguania, Liolaemidae)
Liolaemus is a diverse genus of lizards, subdivided into two subgenera: Liolaemus (sensu stricto) and Eulaemus, distributed mainly in Chile and Argentina. The Liolaemus elongatus-kriegi complex is the most diverse group within Liolaemus (sensu stricto), especially the species closely related to Liolaemus elongatus, which form a clade currently comprising nine species. Several Chilean species of...
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ژورنال
عنوان ژورنال: Gayana (Concepción)
سال: 2016
ISSN: 0717-6538
DOI: 10.4067/s0717-65382016000100013