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Home -> Kingdom Animalia -> Phylum Chordata -> Subphylum Vertebrata -> Class Amphibia -> Order Anura -> Family Bufonidae -> Species Bufo fowleri

Bufo fowleri
Fowler's toad



2010/02/07 01:58:36.673 US/Eastern

By Marion Vereecke

Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Amphibia
Order: Anura
Family: Bufonidae
Genus: Bufo
Species: Bufo fowleri

Geographic Range

Bufo fowleri is a toad commonly found in areas of the Atlantic Coastal Plain. Its range consists of New Hampshire to eastern Texas, eastern Arkansas, Missouri, and southeastern Iowa, eastward into Michigan through Ohio, and West Virginia to the Atlantic coast. Extensions include up the Hudson, Delaware, Susquehanna, Ohio, and other rivers and into southern Ontario, along Lake Erie. (Wright and Wright, 1949)

Biogeographic Regions:
nearctic (native ).

Habitat

Bufo fowleri prefers to live in open woodlands, sand prairies, meadows, and beaches. They like to burrow into the ground during hot, dry periods and in the wintertime.(Harding 1992 and Harding 1997)

Terrestrial Biomes:
savanna or grassland ; forest .

Physical Description

Bufo fowleri comes from the order Anura which are animals noted for having a toothless jaw and enlarged parotoid glands behind the eyes. They are usually brown, gray, or olive green in color and have black edged dark spots on its back, with a light middorsal stripe. In each of the dark spots there are found to be three or more warts. The belly is usually whitish and almost completely unspotted. Males are often found to be darker in color while females are found to be lighter. Bufo fowleri is noted for having a single dark spot on its otherwise spotless belly. Its body measures between 5 to 9.5 centimeters in length. Bufo fowleri tadpoles have a short oval body and a long tail with an upper and lower fin. Their size is 1 to 1.4 centimeters long.(Wright, 1949 and Collins, 1991)

Reproduction

Bufo fowleri is known to reproduce in warmer seasons of the year, usually between the months of May and June. Breeding sites are located in shallow waters that are very open, including farm ponds, lake edges, marshes, and woodland ponds. Breeding habits of Bufo fowleri are very similar to Bufo americanus. The male will migrate to the breeding sites where he will begin calling his mate in intervals that can last up to thirty seconds. The call often attracts both male and females which will cause mistaken identities in the breeding process. This mistake occurs when one male tries to mate with another male. Fortunately, the first male will realize the mistake right away because the other male will let out a chirping release call that informs the first one of his mistake. When the male finally meets his mate, the male will try to clasp the female from behind. From this position the male can fertilize up to 7,000-10,000 eggs. Fertilization is external. The eggs are known to hatch in two to seven days. The tadpoles will begin to undergo the change into tiny toads thirty to forty days later. In one growing season, Bufo fowleri may grow to sexual maturity, but slower growing individuals may take up to three years before they reach their sexual peak.(Harding, 1992 and Harding, 1997)

Behavior

There are some conflicting opinions about the behavior of Bufo fowleri. One source indicates that this type of toad is completely nocturnal (Behler,1996). Another source states that Bufo fowleri is mostly active in the daytime, except during hot days or very cold days when it will burrow into the ground (Harding, 1992). Both sources agree on how Bufo fowleri reacts to predators and the defenses they use to protect themselves. Potential predators of Bufo fowleri include snakes, birds, and smaller mammals. One defensive behavior it will use is its coloration to blend into its surroundings. These toads are able to do this because they tend to have coloration that is more nature-like, or earth tone. Another defense includes a noxious secretion that comes from the large warts on their backs. If attacked, this secretion will irritate the predator's mouth and, if ingested, can be poisonous to smaller mammals. If roughly handled, Bufo fowleri will also lie still on their backs and pretend to play dead.(Behler, 1996, Harding, 1992, and Harding, 1997)

Food Habits

The adults eat insects and other small terrestrial invertebrates, but shy away from earthworms, unlike their close relative, Bufo americanus. As a tadpole, Bufo fowleri use their mouth, which is rimmed with tooth-like structures, to scrape attached algae from rocks and plants. The tadpoles are also known to feed on bacteria and other organic material from the water.(Harding, 1997)

Economic Importance for Humans: Positive

Bufo fowleri is useful to have in gardens because it eats many insects and other small invertebrates.

Conservation Status

IUCN Red List: [link]:
Least Concern.

US Federal List: [link]:
No special status.

CITES: [link]:
No special status.

State of Michigan List: [link]:
No special status.

Protection of the breeding sites for Bufo fowleri is very important to their existence. Off-road vehicles that are commonly used in beach and dune habitats are damaging to this species. Also, the use of agricultural chemicals share in the blame for the decline of Bufo fowleri in some areas. They are considered a species at risk in Ontario. (Harding, 1997)

Other Comments

There are no other pertinent comments.

For More Information

Contributors

Marion Vereecke (author), Milford High School.
George Campbell (editor), Milford High School.

References

Behler, J., N. Society. 1996. National Audubon Society Field Guide to North American Reptiles & Amphibians. United States: Alfred A. Knopf, Inc..

Collins, J., R. Conant. 1991. Peterson Field Guides: Reptiles and Amphibians ( Eastern/Central North America). Boston and New York: Houghton Mifflin Company.

Harding, J., J. Holman. 1992. Michigan Frogs, Toads, and Salamanders: A Field Guide and Pocket Reference. East Lansing, MI: Cooperative Extension Service, Michigan State University.

Harding, J. 1997. Amphibians and Reptiles of the Great Lakes Region. Ann Arbor: The University of Michigan Press.

Wright, A., A. Wright. 1949. Handbook of Frogs and Toads of the United States and Canada. Ithaca, New York: Comstock Publishing Company, Inc..

2010/02/07 01:58:37.576 US/Eastern

To cite this page: Vereecke, M. 2001. "Bufo fowleri" (On-line), Animal Diversity Web. Accessed February 10, 2010 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Bufo_fowleri.html.

Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.

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