Ceratophrys


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Ceratophrys

 

a genus of tailless amphibians. The upper eyelid of most species has a growth that resembles a horn. Some members of the genus have papillae and warts, and some have cutaneous ossifications on the head. The coloration is usually mottled, often including red-orange, red-brown, or bright green. The body length reaches 20 cm.

There are 14 species, distributed in South America. Some species are marked by polyploidy, which is very rare in vertebrates. The majority of species live in damp, swampy forests, yet some, such as C. laevis, live in the water. The amphibians feed on small vertebrates, for which they frequently lie in wait, burrowed in the ground with only their heads sticking out. They also eat invertebrates, such as mollusks. The tadpoles have strong jaws and eat the tadpoles of other amphibians. The cutaneous secretions of some members of the genus are harmless, but those of others, for example, C. americana, are highly poisonous.

I. S. DAREVSKII

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000 (Linnaeus, 1758) Ceratophryidae Ceratophrys Cx calcarata (Boulenger, 1890) Hylidae Dendropsophus Dm 0.
Wild ER (2001) Ceratophrys cranwelli (Cranwell's Horned Frog).
Bioacoustic of the advertisement call of Ceratophrys cranwelli (Anura: Ceratophryidae)
Fusion between the first and second presacral vertebrae was considered as a synapomorphic character shared by Beelzebufo and Ceratophrys by EVANS et al.
Los renacuajos de Dendropsophus, Hyloscirtus, Hypsiboas, Scinaxy y Sphaenorhynchus (igual con renacuajos de Atelopus, Centrolene, Ceratophrys, Chiasmocleis, Colostethus, Dendrobates, Elachistocleis, Gastrotheca, Leptodactylus, Lithobates, Phyllomedusa, Physalaemus, Pipa, Pleurodema, Pseudopaludicola, Rhaebo, Rhinella, Scarthyla goinorum y Trachycephalus) muestran la condicion plesiomorfica mientras la condicion derivada fue observada en Pseudis limellus, P.
1), Adenomera hylaedactyla, Ceratophrys cornuta, Edalorhina perezi, Eleutherodactylus acuminatus, E.
Por otra parte, Duellman & Lizana (1994) reportan que en Ceratophrys cornuta (un acechador), los juveniles consumieron mayor numero de presas (principalmente formicidos) que los adultos (aranas, ranas, ratones y ortopteros).
Dentro de los ceratofrinos, el material es indistinguible en morfologia y tamano al de la especie actual Ceratophrys ornata (Bell, 1841); sin embargo, la naturaleza fragmentaria de MMS 1349 impide por el momento una asignacion precisa por debajo de la subfamiliar.
ESPECIE # de noches Canto Amplexus encontrada 1 Allobates trilineatus 4 2 Eleutherodactylus 1 acuminatus 3 Eleutherodactylus carvalhoi 3 4 Eleutherodactylus 6 x croceoinguinis 5 Eleutherodactylus sulcatus 1 6 Eleutherodactylus sp 1 7 Oreobates quixensis 3 8 Chaunus marinus 1 9 Dendrophryniscus minutus 20 10 Rhinella sp "6" 3 11 Ceratophrys cornuta 1 12 Ameerega trivittata 1 13 Ranitomeya ventrimaculata 1 14 Hemiphractus scutatus 1 15 Dendropsophus brevifrons 3 x 16 Dendropsophus parviceps 10 x 17 Dendropsophus sarayacuensis 3 18 Hypsiboas cinerascens 15 x 19 Hypsiboas lanciformis 2 20 Hypsiboas punctatus 1 21 Osteocephalus planiceps 1 22 Osteocephalus taurinus 7 x 23 Osteocephalus sp.
Davies & Burton (1982) describieron caracteristicas basicas de la osteologia y miologia de Rheobatrachus silus y Wild (1997) hizo una completa descripcion del esqueleto adulto y desarrollo osteologico de Ceratophrys cornuta.