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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/87782
Ver los metadatos del registro completo
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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 instacron:UNLP |
reponame_str |
SEDICI (UNLP) |
collection |
SEDICI (UNLP) |
instname_str |
Universidad Nacional de La Plata |
instacron_str |
UNLP |
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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score |
13.13397 |