Scaphiopus

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Scaphiopus
Scaphiopus couchii ANRA.jpg
Couch's spadefoot toad, Scaphiopus couchii
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Scaphiopodidae
Genus: Scaphiopus
Holbrook, 1836
Southern Spadefoot toad, Florida-adult Southern Spadefoot toad, florida.jpg
Southern Spadefoot toad, Florida-adult

Scaphiopus is a genus of North American amphibian commonly referred to as the North American spadefoots, southern spadefoots, or eastern spadefoot toads. [1] They differ greatly from true toads (those of the family Bufonidae) by having eyes with vertical pupils, no parotoid gland, and relatively smooth skin. Their most distinctive feature is a spade-like projection on their hind feet, from which their common name is derived. This projection enables spadefoot toads to dig in loose soils with ease. Its scientific name means ‘spade-foot’ as well, from the Ancient Greek skaphís (σκαφίς, ‘spade, shovel’) and pous ( πούς , ‘foot, leg’). [2] [3]

Contents

Species

Scaphiopus species were once classified with their European cousins in the family Pelobatidae, but have since been reclassified to their own family, Scaphiopodidae, with other North American species. There are three species in the genus Scaphiopus: [1] [4]

Geographic range

Spadefoot toads are found throughout the United States and into northern Mexico. They tend to prefer dry, grassland areas with loose, sandy soils that flood in the rainy season.

Description

Scaphiopus are generally colored appropriately with greens and browns to camouflage themselves in their native habitat. At adult size they are usually not much larger than 8 cm.

Rear foot of a Couch's spadefoot, Scaphiopus couchii demonstrating the "spade" that gives them their name Scaphiopus couchii2.jpg
Rear foot of a Couch's spadefoot, Scaphiopus couchii demonstrating the "spade" that gives them their name

Behavior and reproduction

Adult Spadefoot toads are nocturnal and spend most of their day burrowed underground. At night they will regularly emerge to forage. [5] Spadefoot toads are explosive breeders; after periods of heavy rainfall breeding adults will scramble to fishless, ephemeral pools to breed and lay eggs. [6] They have one of the fastest reproductive cycles of any amphibian species. Once laid, eggs hatch in a matter of a day or two. The tadpoles are capable of developing to froglets within a couple of weeks. This short larval period allows spadefoots to utilize water sources that other amphibians cannot.

Diet

Their diet primarily consists of Lepidopterous larvae, Scarabaeidae adults, and Carabidae adults, which suggests that they forage on the surface rather than underground. [7]

Related Research Articles

<span class="mw-page-title-main">European spadefoot toad</span> Family of amphibians

The European spadefoot toads are a family of frogs, the Pelobatidae, with only one extant genus Pelobates, containing six species. They are native to Europe, the Mediterranean, northwestern Africa, and western Asia.

<span class="mw-page-title-main">Mexican burrowing toad</span> Species of amphibian

The Mexican burrowing toad is the single living representative of the family Rhinophrynidae. It is a unique species in its taxonomy and morphology, with special adaptations to assist them in digging burrows where they spend most of their time. These adaptations include a small pointed snout and face, keratinized structures and a lack of webbing on front limbs, and specialized tongue morphology to assist in feeding on ants and termites underground. The body is nearly equal in width and length. It is a dark brown to black color with a red-orange stripe on its back along with splotches of color on its body. The generic name Rhinophrynus means 'nose-toad', from rhino- (ῥῑνο-), the combining form of the Ancient Greek rhis and phrunē.

<span class="mw-page-title-main">American spadefoot toad</span> Family of amphibians

The Scaphiopodidae are a family of American spadefoot toads, which are native to North America. The family is small, comprising only seven different species.

<i>Spea hammondii</i> Species of amphibian

Spea hammondii, also known as the western spadefoot, western spadefoot toad, Hammond's spadefoot, or Hammond's spadefoot toad, is a species of amphibian in the family Scaphiopodidae. It is found in western California (USA) and northwestern Baja California (Mexico). The specific name hammondii is in honor of physician and naturalist William Alexander Hammond.

Eastern spadefoot or Eastern spadefoot toad may refer to:

<i>Spea</i> Genus of amphibians

Spea is a genus of North American amphibian commonly referred to as the western spadefoot toads. They differ greatly from true toads by having eyes with vertical pupils, no parotoid glands, and relatively smooth skin. Their most distinctive feature is a spade-like projection on their hind feet, from which their common name is derived. This projection enables spadefoot toads to dig in loose soils with ease. Its name is from the Ancient Greek speos

<span class="mw-page-title-main">Texas toad</span> Species of amphibian

The Texas toad is a species of medium-sized toad that occurs in the southern United States and northern Mexico. It breeds in temporary water pools after heavy rains.

<span class="mw-page-title-main">Couch's spadefoot toad</span> Species of amphibian

Couch's spadefoot toad or Couch's spadefoot is a species of North American spadefoot toad. The specific epithet couchii is in honor of American naturalist Darius Nash Couch, who collected the first specimen while on a personal expedition to northern Mexico to collect plant, mineral, and animal specimens for the Smithsonian Institution.

<span class="mw-page-title-main">Hurter's spadefoot toad</span> Species of amphibian

Hurter's spadefoot toad or Hurter's spadefoot is a species of American spadefoot toad found in the south central United States ; its range might extend to the adjacent northern Mexico. It was once classified as a subspecies of the eastern spadefoot toad, but it has been granted its own species status. The specific name hurterii is in honor of the Swiss-American naturalist and curator of the St. Louis Academy of Sciences, Julius Hurter.

<span class="mw-page-title-main">Plains spadefoot toad</span> Species of amphibian

The plains spadefoot toad is a species of American spadefoot toad which ranges from southwestern Canada, throughout the Great Plains of the western United States, and into northern Mexico. Like other species of spadefoot toads, they get their name from a spade-like projection on their hind legs which allows them to dig into sandy soils. Their name, in part, comes from their keratinized metatarsals, which are wide instead of "sickle shaped". The species name translates as buzzing leaf shaped. This refers to the species' distinguishing features; its buzzing mating call, and its leaf-shaped digging metatarsals. It was first described by Cope in 1863.

<span class="mw-page-title-main">New Mexico spadefoot toad</span> Species of amphibian

The New Mexico spadefoot toad is a species of American spadefoot toad found in the southwestern United States and Mexico. Like other species of spadefoot toad, they get their name from a distinctive spade-like projections on their hind legs, which enable them to dig in sandy soils. Spea multiplicata can be identified by its wedge-shaped spade. Some sources also refer to the species as the Mexican spadefoot toad, desert spadefoot toad or southern spadefoot toad.

<i>Scaphiopus holbrookii</i> Species of amphibian

Scaphiopus holbrookii, commonly known as the eastern spadefoot, is a species of American spadefoot toad endemic to the eastern United States. It is not considered a true toad.

<span class="mw-page-title-main">Oak toad</span> Species of amphibian

The oak toad is a species of toad in the family Bufonidae. It is endemic to the coastal regions of southeastern United States. It is regarded as the smallest species of toad in North America, with a length of 19 to 33 mm.

<span class="mw-page-title-main">Great Basin spadefoot</span> Species of amphibian

The Great Basin spadefoot is an amphibian in the family Scaphiopodidae. It is 3.8 to 6.3 centimetres long and is usually colored gray, olive or brown. Great Basin spadefoot toads have adapted to life in dry habitats. They use the hard, keratinized spade on each foot to dig a burrow, where they spend long periods during cold and dry weather. They are opportunistic hunters and will eat anything they can subdue. While their tadpoles have numerous predators, adults are able to produce skin secretions that deter enemies.

<span class="mw-page-title-main">Pelobatoidea</span> Superfamily of amphibians

The Pelobatoidea are a superfamily of frogs. They typically combine a toad-like body shape with a frog-like, pointed face. Phylogenetically they stand between primitive frogs on the one side and higher frogs on the other and are therefore – among other things by characteristics of bone construction – in the suborder Mesobatrachia.

<i>Pelobates cultripes</i> Species of amphibian

Pelobates cultripes is a toad species in the family Pelobatidae. It is known under many different common names, including the western spadefoot, Iberian spadefoot toad, Spanish spadefoot toad, and Wagler's spadefoot toad. It is found in most of the Iberian Peninsula with isolated populations southern and western France.

Wyoming is home to 12 amphibian species and 22 species of reptiles.

<i>Pelobates syriacus</i> Species of amphibian

Pelobates syriacus, the eastern spadefoot or Syrian spadefoot, is a species of toad in the family Pelobatidae, native to an area extending from Eastern Europe to Western Asia.

References

  1. 1 2 Frost, Darrel R. (2023). "Scaphiopus Holbrook, 1836". Amphibian Species of the World: An Online Reference. Version 6.1. American Museum of Natural History. doi:10.5531/db.vz.0001 . Retrieved 12 April 2023.
  2. σκαφίς . Liddell, Henry George ; Scott, Robert ; A Greek–English Lexicon at the Perseus Project
  3. Dodd, C. Kenneth (2013). Frogs of the United States and Canada. Vol. 1. The Johns Hopkins University Press. p. 20. ISBN   978-1-4214-0633-6.
  4. "Scaphiopodidae". AmphibiaWeb. University of California, Berkeley. 2023. Retrieved 12 April 2023.
  5. Devan-Song, Anne; Walden, M. A.; Moniz, Haley A.; Fox, Justine M.; Low, Mary-Ruth; Wilkinson, Emma; Buchanan, Scott W.; Karraker, Nancy E. (11 June 2021). "Confirmation bias perpetuates century-old ecological misconception: evidence against 'secretive' behavior of eastern spadefoots". Journal of Herpetology. 55 (2): 137–150. doi:10.1670/20-044.
  6. Greenberg, Cathryn H.; Tanner, George W. (December 2004). "Breeding pond selection and movement patterns by eastern spadefoot toads (Scaphiopus holbrookii) in relation to weather and edaphic conditions". Journal of Herpetology. 38 (4): 569–577. doi:10.1670/5-04A.
  7. Whitaker, John O.; Rubin, David; Munsee, Jack R. (1977). "Observations on Food Habits of Four Species of Spadefoot Toads, Genus Scaphiopus". Herpetologica. 33 (4): 468–475.