Anomalías oculares en híbridos <i>Bufo paranecmis</i> ♂ x <i>Bufo arenarum</i> ♀ (Anura: bufonidae)
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 p...
| Authors: | , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 1994 |
| Country: | Argentina |
| Institution: | Universidad Nacional de La Plata |
| Repository: | SEDICI (UNLP) |
| Language: | Spanish |
| OAI Identifier: | oai:sedici.unlp.edu.ar:10915/6404 |
| Online Access: | http://sedici.unlp.edu.ar/handle/10915/6404 |
| Access Level: | Open access |
| Keyword: | Ciencias Naturales Zoología Herpetología bufo arenarum; bufo paracnemis; hibridación; teratología Reptiles bufo arenarum; bufo paracnemis; hibridization; teratology |
| Summary: | 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. |
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