Geographical barriers and serological relationships in some african toads of the Bufo regularis complex

Serological relationships of several African toads of the Bufo regularis group have been studied. Two fundamental assemblies of populations were recognizable by crossed precipitin tests. They seem correpond to the Blair’s «Western» and «Eastern» groups in accordance with their reciprocal rate of gen...

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Detalles Bibliográficos
Autor principal: Cei, José Miguel Alfredo María
Formato: Articulo
Lenguaje:Inglés
Publicado: 1973
Materias:
Zoología
African toads
Serological relationships
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87782
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87782
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Zoología
African toads
Serological relationships
spellingShingle Zoología
African toads
Serological relationships
Cei, José Miguel Alfredo María
Geographical barriers and serological relationships in some african toads of the Bufo regularis complex
topic_facet Zoología
African toads
Serological relationships
description Serological relationships of several African toads of the Bufo regularis group have been studied. Two fundamental assemblies of populations were recognizable by crossed precipitin tests. They seem correpond to the Blair’s «Western» and «Eastern» groups in accordance with their reciprocal rate of genetic compatibility. Between the regularis toads North and South of Cunene river percent values of homo-heterologous precipitin reactions range between 70.4 - 72.9 %. On the other hand the Angolan populations and the isolated regularis populations from Djanet (Sahara: Algeria) show values ranging between 80.6 - 87.0 %, in spite of the wide geographical intervals. Serological distance increases between regularis toads and the several allo- -sympatric species belonging to the same regularis complex, such as pardalis, rangeri or maculatus-pusillus, (range of percent values between 60.5 - 69.0%). Furthermore a noticeable similarity is remarkable between rangeri and pardalis (83.7 - 84.7 %) in accordance with Poynton’s systematic statements (1964). Evolutive features of this troublesome group of toads were briefly discussed. The paleogeographic interest of the pleistocenic climatic cycles of the present Saharian Desert and the ancient Kalahari Basin were also emphasized as very important ecological barriers.
format Articulo
Articulo
author Cei, José Miguel Alfredo María
author_facet Cei, José Miguel Alfredo María
author_sort Cei, José Miguel Alfredo María
title Geographical barriers and serological relationships in some african toads of the Bufo regularis complex
title_short Geographical barriers and serological relationships in some african toads of the Bufo regularis complex
title_full Geographical barriers and serological relationships in some african toads of the Bufo regularis complex
title_fullStr Geographical barriers and serological relationships in some african toads of the Bufo regularis complex
title_full_unstemmed Geographical barriers and serological relationships in some african toads of the Bufo regularis complex
title_sort geographical barriers and serological relationships in some african toads of the bufo regularis complex
publishDate 1973
url http://sedici.unlp.edu.ar/handle/10915/87782
work_keys_str_mv AT ceijosemiguelalfredomaria geographicalbarriersandserologicalrelationshipsinsomeafricantoadsofthebuforegulariscomplex
bdutipo_str Repositorios
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