Hemipenes in females of the Mexican viviparous lizard Barisia imbricata ( Squamata: Anguidae): an example of heterochrony in sexual development. External character data from members of the Barisia imbricata complex support the validity of Tihen’s (b) arrangement, with two species (B. levicollis. PDF | Barisia imbricata imbricata is an endemic anguid lizard living in the highlands of central Mexico, mainly in the Trans-Mexican Volcanic.

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The generic name was derived from the Greek word barys, meaning “heavy,” apparently in reference to the robust body of B. Amphibians and reptiles of the state of Queretaro, Mexico.

Barisia imbricata

Isis von Oken 21 4: The herpetofauna of Oaxaca, Mexico: We think that the delayed regression of the hemipenes reflects evolutionary differences among reptiles and may be an indication of a stage in the evolutionary process of this species.

All neonates were sexed by eversion of hemipenes and some of their body characteristics were recorded. Notes on amphibians and reptiles of Michoacan, Mexico.

American Museum Novitates Cotttae, Stuttgartiae, Monachii et Tubingiae, xxv-xxxvi pp. Can you confirm these amateur observations of Barisia imbricata? Changes in the timing or sequence of development events are known as barizia.

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Barisia imbricata – photos

The sexual development of saurians follows a similar pattern to that described for other amniotes. Bulletin du Museum national d’Histoire naturelle, Paris, 4e ser. On a collection of batrachians and imbricsta from Mount Orizaba, Mexico, with descriptions of two new species.

Reptarium The Reptile Database. Web pages and scripting Jiri Hosek. Evolutionary speciation in the alligator lizards of the genus Barisia. Developmental asynchrony and antagonism of sex determination badisia in a lizard with temperature-induced sex reversal.

Barisia imbricata | The Reptile Database

An updated checklist of the herpetofauna from Guerrero, Mexico. Gerrhonotine lizards with the skull not widened or depressed ; frontal bone not in contact with the maxillae ; pterygoid teeth absent or vestigial; dorsal osteoderms with a well-defined, strongly thickened basal area; lateral fold moderately to well developed, with a moderate or large granular area ; sides of the neck finely granular; postero-ventral surfaces of the forearms and shanks granular; minimum number of scales in a single row across the nape six to ten; anterior internasals present; postrostral present or absent; subocular and postocular series well differentiated from each other; the suboculars extend to the lowest primary temporal; twelve to fourteen ventral scale rows fide TIHEN Mocquard,Etudes sur les reptiles, p.

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The herpetofauna of Puebla, Mexico: A review of the lizard genus Barisia. Gonadal development began at embryonic stage 33 and the hemipenes were visible at the same stage. Variation in the rare lizard Barisia rudicollis Wiegmann Anguidae with description of a new species from Central Mexico. Tweet Please submit feedback about this entry to the curator.

Tlalnepantla UNAM, pp. ZMB imbricata Holotype: Catalogue of the slender-tongued saurians, with descriptions of many new genera and species.

The herpetofauna of the Mexican State of Aguascalientes. Descriptiones et icones amphibiorum. We collected gestating females; some lizards were subjected to partial hysterectomy and the embryos were processed using routine histological technique to assess gonadal development; the remaining embryos were used to assess the development of hemipenes. Amphibia-Reptilia – get paper here Tihen, J. Phylogeny and evolution of dorsal pattern in the Mexican endemic lizard genus Barisia Anguidae: Catalogue of the lizards in the British Museum Natural History.