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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Gonadal development began at embryonic stage 33 and the hemipenes were visible at the same stage.

Catalogue of the lizards in the British Museum Natural History. An updated checklist of the herpetofauna from Guerrero, Mexico.

Barisia imbricata

Tweet Please submit feedback about this entry to the curator. Acta Zoologica Mexicana n. Mesoamerican Herpetology 4 4: Amphibians and reptiles of the state of Queretaro, Mexico. Barixia y Reptiles; pp. All neonates had hemipenes and sex could only be established through direct observation of the reproductive ducts and gonadal histology. Rediscovery of a Mexican lizard, Barisia imbricata planifrons Bocourt.

Amphibia-Reptilia – get paper here Tihen, J. Tlalnepantla UNAM, pp. The herpetofauna of the Mexican State of Aguascalientes. Can you confirm these amateur observations of Barisia imbricata?


In the neonates, ikbricata ovary contained oogonias and ovarian follicles, whereas the testicles showed testicular cords.

Amphibians and reptiles of the Seese and Mocino expedition: Amphibians and reptiles of the state kmbricata Hidalgo, Mexico. Evolutionary speciation in the alligator lizards of the genus Barisia.

A review of the lizard genus Barisia. Bulletin du Museum national d’Histoire naturelle, Paris, 4e ser. Cotttae, Stuttgartiae, Monachii et Tubingiae, xxv-xxxvi pp.

Other imbricwta females were kept in captivity in individual terraria until barisi time of delivery. Mocquard,Etudes sur les reptiles, p. Scientific Reports, 8 1- get paper here Wiegmann,A. Tenth contribution to the herpetology of Tropical America. Changes in the timing or sequence of development events are known as heterochrony.

The herpetofauna of Puebla, Mexico: Catalogue of the slender-tongued saurians, with descriptions of many new genera and species. Phylogeny and evolution of dorsal pattern in the Mexican endemic lizard genus Barisia Anguidae: Catalogue of the specimens of lizards in the collection of the British Museum. Several neonates were sacrificed and processed to establish gonadal histology and the young of the remaining litters were maintained in captivity to observe abrisia fate of the hemipenes in both sexes.

The sexual development of saurians follows a similar pattern to that described for barieia amniotes. Notes on the Herpetofauna of Western Mexico Reptarium The Reptile Database. Check List 11 3: On a collection of batrachians and reptiles from Mount Orizaba, Mexico, with descriptions of two new species.


IUCN Red List of Threatened Species

The generic name was derived from the Greek word barys, meaning “heavy,” apparently in reference to the robust body of B. We describe the pattern of sexual development in the viviparous Mexican lizard Barisia imbricata and imrbicata heterochrony in umbricata regression of hemipenes in this lizard.

Mesoamerican Herpetology 2 1: A conservation reassessment of the reptiles of Mexico based on the EVS measure. The herpetofauna of Oaxaca, Imbticata Variation in the rare lizard Barisia rudicollis Wiegmann Anguidae with description of a new species from Central Mexico.

Journal of Zoological Systematics and Evolutionary Research 43 3: 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. Find more photos by Google images search: