Scaphiophryne calcarata (Mocquard, 1895)
© 1994 Miguel Vences and Frank Glaw (1 of 1)
One dissected female contained 465 white-brown eggs, diameter 1 mm. Tadpoles from Ampijoroa measure in stage 25: 7.5-9.5 mm in total length; in stage 38-40: 18-20 mm in total length. Their head and body are flattened above, ovoid below. The eyes are directed dorsilaterally. The mouth is terminal, the horny beak is rudimentary and labial teeth are not present. The lower lip has an extended flap, which is even richer in papillae than the remaining contour of the lips. The spiracle is mediosinistral. The tadpole is mainly transparent with some black pigmentation. They are mainly filter feeding tadpoles swimming in midwater, but also feed on larger particles. Juveniles measure 5.5-7.5 mm from snout to vent length. They are beige or green, and the dorsum is smoother than in adults.
The single note is an unharmonious screaming sound lasting 850-900 ms, and is repeated after 2200-2500 ms. Frequency ranges from 3 to 4.3 kHz. At a distance of some metres it becomes impossible to recognize single calls in the noise of a large chorus. On the sonagram the noise of such choruses shows a distinct, dense frequency band.
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Madagascar
Observed at elevations from sea level to about 300 m.
Life History, Abundance, Activity, and Special Behaviors
Glaw, F. and Vences, M. (1994). Amphibians and Reptiles of Madagascar. M. Vences and F. Glaw Verlags GbR., Köln.
Originally submitted by: Frank Glaw and Miguel Vences (first posted 2001-10-22)
Edited by: Rachna Tiwari (2010-07-19)
Species Account Citation: AmphibiaWeb 2010 Scaphiophryne calcarata <https://amphibiaweb.org/species/2073> University of California, Berkeley, CA, USA. Accessed Jun 4, 2023.
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Citation: AmphibiaWeb. 2023. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 4 Jun 2023.
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