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

Autores
Cei, José Miguel Alfredo María
Año de publicación
1973
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).
Facultad de Ciencias Naturales y Museo
Materia
Zoología
African toads
Serological relationships
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/87782

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network_name_str SEDICI (UNLP)
spelling Geographical barriers and serological relationships in some african toads of the Bufo regularis complexCei, José Miguel Alfredo MaríaZoologíaAfrican toadsSerological relationshipsSerological 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.Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).Facultad de Ciencias Naturales y Museo1973info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf233-245http://sedici.unlp.edu.ar/handle/10915/87782enginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:49:45Zoai:sedici.unlp.edu.ar:10915/87782Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:49:45.935SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Geographical barriers and serological relationships in some african toads of the Bufo regularis complex
title Geographical barriers and serological relationships in some african toads of the Bufo regularis complex
spellingShingle Geographical barriers and serological relationships in some african toads of the Bufo regularis complex
Cei, José Miguel Alfredo María
Zoología
African toads
Serological relationships
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
dc.creator.none.fl_str_mv Cei, José Miguel Alfredo María
author Cei, José Miguel Alfredo María
author_facet Cei, José Miguel Alfredo María
author_role author
dc.subject.none.fl_str_mv Zoología
African toads
Serological relationships
topic Zoología
African toads
Serological relationships
dc.description.none.fl_txt_mv 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.
Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).
Facultad de Ciencias Naturales y Museo
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.
publishDate 1973
dc.date.none.fl_str_mv 1973
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/87782
url http://sedici.unlp.edu.ar/handle/10915/87782
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
233-245
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
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instname_str Universidad Nacional de La Plata
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institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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