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Encyclopedia > Bufo americanus
?American Toad
Conservation status: Least concern

Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Bufonidae
Genus: Bufo
Species: B. americanus
Binomial name
Bufo americanus
(Holbrook, 1836)
Habitat range of B. americanus
Habitat range of B. americanus

The American toad (Bufo americanus) is a common species of toad found throughout the eastern United States and Canada. The conservation status of a species is an indicator of the likelihood of that species continuing to survive. ... Image File history File linksMetadata Bufo_americanusPCCA20060417-3352B.jpg‎ Licensing File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): List of Minnesota amphibians American toad Talk:American toad List of Texas amphibians Metadata This file contains additional information, probably added... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Subregnum Parazoa Porifera (sponges) Subregnum Agnotozoa Placozoa (trichoplax) Orthonectida (orthonectids) Rhombozoa (dicyemids) Subregnum Eumetazoa Radiata (unranked) (radial symmetry) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anemones) Bilateria (unranked) (bilateral symmetry) Acoelomorpha (basal) Myxozoa (slime animals) Superphylum Deuterostomia (blastopore becomes anus) Chordata (vertebrates, etc. ... Typical Classes Subphylum Urochordata - Tunicates Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... For other uses, see Amphibian (disambiguation). ... Suborders Archaeobatrachia Mesobatrachia Neobatrachia The Anura is the order of animals in the class Amphibia that includes frogs and toads. ... For other uses, see Toad (disambiguation). ... Species See text. ... In biology, binomial nomenclature is the formal method of naming species. ... John Edwards Holbrook. ... Charles Darwin 1836 was a leap year starting on Friday (see link for calendar). ... Image File history File links Habitat range of Bufo americanus. ... Families At least 9, see article. ...

Contents

Eastern American toad

The Eastern American toad (B. a. americanus) is a medium sized toad usually found in the range from 2 to over 3 1/2 inches. The color and pattern is somewhat variable. The Eastern American toad has spots that contain only one to two warts. It also has enlarged warts on the tibia or lower leg below the knee. While the belly is usually spotted, it is generally more so on the forward half (in some rare individuals there may be few or no spots). Other species which may be confused with the Eastern American toad are Fowler's toad, which has three or more warts in the largest dark spots, and in the far west of its range Woodhouse's toad.

Detail of glands
Enlarge
Detail of glands

This species can be difficult to identify. It never has a spotted belly and both cranial crests touch the parotoid glands. In the Eastern American toad they almost never touch the parotoid glands. Image File history File linksMetadata Bufo_americanusPCCA20060417-3354B.jpg‎ Licensing File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): American toad Metadata This file contains additional information, probably added from the digital camera or scanner used to create or digitize... Image File history File linksMetadata Bufo_americanusPCCA20060417-3354B.jpg‎ Licensing File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): American toad Metadata This file contains additional information, probably added from the digital camera or scanner used to create or digitize...


The Eastern American toad may be confused with the Canadian toad in the area where they overlap, but the cranial crests in the American toad do not join to form a raised "boss" (bump) like they do in the Canadian toad. Its range also overlaps with the Southern toad's, but in this species the cranial crests form two unique knobs. Their diet includes crickets, mealworms, worms, ants, and other small insects. Binomial name Bufo terrestris Bonnaterre, 1789 The southern toad (Bufo terrestris) is a medium sized (approximately 3 inches, the largest recorded toad was 4 1/2 inches) toad native to the southeastern United States, from eastern Louisiana to southeastern North Carolina. ...


Dwarf American toad

The Dwarf American toad (B. a. charlesmithi), is a smaller version of the American toad which reaches lengths of about 2 1/2 inches and is generally a dark reddish color. The spots on the back are reduced or absent, and when present they contain at most one wart. The ventral surface or belly is usually cream colored with a few dark spots in the breast area. This subspecies can be distinguished from the above mentioned species in the same manner as for the Eastern American toad. The southwestern portion of the Dwarf American toad's range overlaps with that of the Gulf Coast Toad. The latter species is distinguished by the presence of a dark lateral stripe in as well as a deep "valley" between its prominent cranial crests. It eats mainly spiders, worms and mushrooms. Binomial name Bufo valliceps Weigmann, 1833 The Gulf Coast Toad (Bufo valliceps) is a species of toad native to the United States, in the states of Louisiana and Texas, and south into Mexico around the Gulf of Mexico region. ...


Hudson Bay toad

The Hudson Bay toad (B. a. copei) is a rare Canadian subspecies of B. americanus.

Eastern American toad, seen from behind shows characteristic markings and "warts".
Eastern American toad, seen from behind shows characteristic markings and "warts".

Image File history File links Download high resolution version (868x652, 166 KB) Bufo americanus seen from the back in the Middlesex Fells Reservation. ... Image File history File links Download high resolution version (868x652, 166 KB) Bufo americanus seen from the back in the Middlesex Fells Reservation. ...

See also

Subclasses and Orders Order Temnospondyli- extinct Subclass Lepospondyli- extinct Subclass Lissamphibia   Anura   Caudata   Gymnophiona Amphibians (class Amphibia) are a taxon of animals that include all tetrapods (four-legged vertebrates) that do not have amniotic eggs. ... Families At least 9, see article. ...

References

  • Hammerson (2004). Bufo americanus. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 10 May 2006. Database entry includes a range map and justification for why this species is of least concern

The IUCN Red List of Threatened Species (also known as the IUCN Red List and Red Data List), created in 1963, is the worlds most comprehensive inventory of the global conservation status of plant and animal species. ... The World Conservation Union or International Union for Conservation of Nature and Natural Resources (IUCN) is an international organization dedicated to natural resource conservation. ...

External links

Wikimedia Commons has media related to:
Bufo americanus

  Results from FactBites:
 
toad on Encyclopedia.com (521 words)
Most species belong to the genus Bufo; members of these species spend much of the time on land, generally near water.
There are about a dozen Bufo species in the United States, among them the common American toad (Bufo americanus), Fowlers toad (B.
Abiotic pond characteristics potentially influencing breeding of Houston toads (Bufo houstonensis).
  More results at FactBites »


 
 

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