Descripción
The hybrids
between Bufo paracnemis ♂ x Bufo arenarum ♀ are counted among tbe so called "vital hybrids". Our resu1ts
have revealed relevant ocular anomalies in 90% of cases. In some larvae the
lens is lacking in either one or both eyes (20%); in others the lens it is
found in an opposite position to normal (25%) or else one normal and one
different eye is formed (20%). Histological analysis reveals anomalies in the retinal
area, observing flexuous movements in the pigmentary strata (5%). Eyes folded
over themselves were also observed (5%). The most severe alterations produced
cases of anophtalmia (10%). On occasions (5%), groupings of pigments were found
instead of the eyes. l00% of the larvae were normal. The other organs show
analogies to those of the larvae of Bufo paracnemis, including the dorsal
pattem.
Rengel, D., Alonso, D. & Pisanó, A. (1994). Anomalías oculares en híbridos Bufo paranecmis Bufo arenarum (Anura: bufonidae). Cuadernos de Herpetología, 8 (2), pp.
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