Digital Morphology account of the Mexican Burrowing Caecilian, Dermophis mexicanus, featuring CT-generated animations of the skull. History of Classification. Dermophis mexicanus was originally classified as Siphonops mexicanus in (Dumeril, ). It was reclassified as Amphisbaena. Family, Caeciliidae Rafinesque, – Caecilians. Genus, Dermophis Peters, – Mexican caecilians. Species, Dermophis mexicanus (Duméril and Bibron, .
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Reproduction in caecilians is oviparous or viviparous and fertilization is internal. It is found in Mexico and Central America, where it burrows under leaf litter and plant debris.
Most oviparous species have aquatic larvae but direct development occurs in some terrestrial species. Mexican burrowing caecilian Conservation status. You do not currently have access to this article. Mexicanue are a group of limbless amphibians.
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In other projects Wikimedia Commons Wikispecies. The lower jaw has a retroarticular process extending one-third of the total jaw length, and an articulation that restricts anteroposterior movements. Specimen Photos Dorsal view Lateral view Ventral view. Please donate to Arkive Help us share the wonders of the natural world. Cannatella’s grant, and funding for additional image processing was provided by a National Science Foundation Digital Libraries Initiative grant to Dr. The head has a pointed snout, a single row of teeth in the lower jaw, and two vestigial eyes covered with skin, with a pair of protrusible tentacles between the eyes and the nostrils.
All caecilians have a fused maxilla and palatine, known as the maxillopalatine. Meixcanus Mexican burrowing caecilian is found in MexicoGuatemalaEl SalvadorHondurasNicaragua mexicabus, and possibly Belizemostly on the Atlantic side, but also in some isolated parts of the Pacific slope. It is fossorial, living in damp, loose soil and under leaf litter, logs, and plant debris, often in banana and coffee plantations.
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Then, they develop rasping teeth and feed on maternal glandular secretions, scraping the inside of the oviduct to stimulate their production. Lindsey Paretti – Blood Island AfricachimpanzeeconservationfilmIn the Fieldlab chimpsLiberiaPrimatesprimatologyrehabilitationtrue storywildlifewildlife filmWildscreen Festival.
From Wikipedia, the free encyclopedia. Additional Information on the Skull Click on the thumbnails below for labeled images of the skull in standard anatomical views. Latest Most Read Most Cited High morphological similarity coupled with high genetic differentiation in new sympatric species of coral-reef squat lobsters Crustacea: Citing articles via Web of Science Gymnophionaa critical review.
In viviparous species, embryos are nourished by secretions from oviduct walls of the female. The latter two muscles appear to mexicqnus greater importance for feeding in Dermophis than do the temporal adductors, and dermopgis evolution of this specialized arrangement may be related to the demands for a reduced cross-sectional area of the head in these burrowing vertebrates.
The upper surface is dark grey and the under surface pale grey with darker markings on the annuli. Together with Conservation International and NatureServe, IUCN has led a comprehensive assessment of the conservation status for the world’s known species of frogs, toads, salamanders, newts and caecilians.
Mexican Caecilian (Dermophis mexicanus) ·
Oxford University Press is a department of the University of Oxford. The tentacle exits the skull through the tentacular foramen or groove located between the nares and orbit Pough et al. Muscles in the first of these sites are comparable to the jaw adductors of other vertebrates, while those in the second two represent morphological and functional departures.
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Mexican burrowing caecilian
Sign In Forgot password? This specimen was collected from Depto. Rodents of Unusual Size. It may be persecuted in some locations because it superficially looks like a snake.
Mexican burrowing caecilian (Dermophis mexicanus) longevity, ageing, and life history
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The reproductive season is in the early rainy season in May and June. If you originally registered with a username please use that to sign in.
GymnophionaDermophisfeedingelectromyography mexicanuss, jaw adduction. They then shed their larval teeth and rapidly grow a set of adult ones. Sign in via your Institution Sign in. To cite this page: Caecilians are the least studied group of amphibians because most species spend the majority of their lives underground or underwater Pough et al.