Class amphibia order anura
Download
1 / 18

CLASS AMPHIBIA Order Anura - PowerPoint PPT Presentation


  • 423 Views
  • Updated On :
  • Presentation posted in: Pets / Animals

CLASS AMPHIBIA Order Anura. Ca. 4750 species worldwide (the most diverse group within Amphibia) Cosmopolitan distribution (except where limited by extremely cold or xeric climates) High reproductive diversity Mostly external fertilization Few internal fertilization (e.g., Ascaphus )

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

CLASS AMPHIBIA Order Anura

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Class amphibia order anura l.jpg
CLASS AMPHIBIAOrder Anura

  • Ca. 4750 species worldwide (the most diverse group within Amphibia)

  • Cosmopolitan distribution (except where limited by extremely cold or xeric climates)

  • High reproductive diversity

    • Mostly external fertilization

    • Few internal fertilization (e.g., Ascaphus)

    • Direct development

    • Few viviparous species

Agalychnis callidryas


Family pelobatidae l.jpg
Family Pelobatidae

  • 3 genera, 10 species (Holarctic distribution)

  • NA genera: Scaphiopus, Spea (1 genus in Europe: Pelobates)

  • Terrestrial, fossorial (sharp-edged spade on hind feet)

  • External fertilization

Scaphiopus couchii


Scaphiopus vs spea l.jpg
Scaphiopus vs. Spea

  • Scaphiopus: Spade on hindfoot elongated, sickle-shaped

  • Spea: Spade on hindfoot short, rounded, wedge-shaped


Pelobatids of nevada l.jpg
Pelobatids of Nevada

  • Great Basin Spadefoot (Spea intermontana)


Family bufonidae l.jpg
Family Bufonidae

  • 33 genera, 376 species

  • Cosmopolitan distribution (except Greenland, Australia, Antarctica)

  • Mostly terrestrial

  • External fertilization (except few genera with internal fertilization, viviparity, or direct development)

Bufo boreas

Bufo alvarius


Family bufonidae6 l.jpg
Family Bufonidae

  • Most species with paratoid glands (producing toxins; Neotropical genus, Atelopus, produces Tetrodotoxin, just like the Salamandrid genus Taricha)

Bufo marinus

Bufo terrestris


Bufo alvarius l.jpg
Bufo alvarius

  • Largest western toad

  • Enlarged warts on hindlegs

All maps found in this presentation are from ARMI Atlas for Amphibian distribution


Bufo boreas l.jpg
Bufo boreas

  • Usually rather indistinct white or cream-colored dorsal stripe

  • Lack of cranial crests


Bufo cognatus l.jpg
Bufo cognatus

  • Large toad with well defined pale-bordered dark blotches, in symmetrical pairs on its back

  • Cranial crests diverge widely towards rear of head


Bufo debilis l.jpg
Bufo debilis

  • A small toad

  • Green or yellow green with small dark spots and bars on its back

  • Cranial crests weak or absent


Bufo exsul l.jpg
Bufo exsul

  • Small dark-colored toad

  • Extremely small distribution

  • White or cream below with dark blotches


Bufo marinus l.jpg
Bufo marinus

  • Introduced species from Central America

  • Large toad with deeply pitted paratoid glands extending far down sides of body


Bufo punctatus l.jpg
Bufo punctatus

  • Small toads with flattened head and body

  • Paratoid glands are round


Bufo speciosus l.jpg
Bufo speciosus

  • Medium-sized toad, uniformly warty, and with no dorsal stripe

  • Cranial crest weak or absent

  • Large inner metatarsal tubercle elongate and sharp-edged


Bufo valliceps l.jpg
Bufo valliceps

  • Broad, dark lateral stripe bordered above by a light stripe

  • Cranial crests strongly developed

  • Deep “valley” down center of the head


Bufo woodhousii l.jpg
Bufo woodhousii

  • White dorsal stripe

  • Prominent cranial crest

  • Elongate paratoid glands


Bufo microscaphus l.jpg
Bufo microscaphus

  • Back usually without prominent dark spotting

  • Skin relatively smooth


Bufonids of nevada l.jpg
Bufonids of Nevada

Bufo nelsoni

Bufo boreas

Bufo microscaphus

Bufo cognatus

Bufo alvarius?

Bufo woodhousii

Bufo punctatus


ad
  • Login