World Library  
Flag as Inappropriate
Email this Article

Rhinophrynidae

Article Id: WHEBN0002497246
Reproduction Date:

Title: Rhinophrynidae  
Author: World Heritage Encyclopedia
Language: English
Subject: Amphibian, List of Anuran families, Frog, Toad, Mesobatrachia, List of amphibians of Texas, List of amphibians, Rhadinosteus parvus
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Rhinophrynidae

Mexican burrowing toad
Juvenile
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Suborder: Mesobatrachia
Family: Rhinophrynidae
Günther, 1859
Genus: Rhinophrynus
Duméril & Bibron, 1841
Species: R. dorsalis
Binomial name
Rhinophrynus dorsalis
Duméril & Bibron, 1841
Distribution of R. dorsalis (in black)

The Mexican burrowing toad (Rhinophrynus dorsalis) is the only species in the genus Rhinophrynus and the family Rhinophrynidae of order Anura. These frogs live from the southern Texas through Mexico, Guatemala, Honduras, and El Salvador to Nicaragua and Costa Rica. The family was once more widespread, including species ranging as far north as Canada, but these died out in the Oligocene.[2]

Physical description

The Mexican burrowing toad grows to 8 cm (3.1 in) in length, and usually has red spots on its bloated body with a red stripe along the center of its back. It has short legs, and a small, pointed head. Its feet have horny, shovel-like appendages which, along with the short, powerful legs, aid it in digging. Its eyes are relatively small, and the tympanum is not visible. Unique among the frogs, the Mexican burrowing toad's tongue is projected directly out the front of the mouth, instead of being flipped out, as in all other frogs.

Ecology and behavior

As the name suggests, the Mexican burrowing toad is a burrowing animal (fossorial), and it spends a large part of its life underground. After a long period of rain, it will emerge from the soil and lay eggs in a water source. It will travel up to 1.6 km (1.0 mi) to find a suitable water source. Due to the unpredictability of rain, the frog will call and mate during any time of the year. It will burrow into soft soil with its short legs once the environment has dried up. The egg and tadpole stages of the lifecycle are relatively short. The eggs take only a few days to hatch, and the tadpoles develop over one to three months.

The call is a loud, low-pitched "wh-o-o-o-a". When it is calling or alarmed, the body becomes inflated. The Mexican burrowing toad eats insects, primarily ants and termites.

Evolutionary independence

The Mexican burrowing toad is genetically unique in a number of ways. According to EDGE, Mexican burrowing toads are:

"The only species, within the only genus of the family Rhinophrynidae, and with over 190 million years of independent evolution, the Mexican burrowing toad is the most evolutionarily distinct amphibian species on Earth today; a fruit bat, polar bear, killer whale, kangaroo and human are all more similar to one another than this species is to any other amphibian."[3]

References

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.