Species diversity and endemism in the Daphnia of Argentina: A genetic investigation
Although the temperate regions of South America are known to have a diverse daphniid fauna, there has been no genetic evaluation of the existing taxonomic system or of the affinities between the North and South American faunas. The present study analyses mitochondrial DNA sequences and allozyme vari...
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Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00244082_v140_n2_p171_Adamowicz http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00244082_v140_n2_p171_Adamowicz_oai |
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I28-R145-paper_00244082_v140_n2_p171_Adamowicz_oai2020-10-19 Adamowicz, S.J. Hebert, P.D.N. Marinone, M.C. 2004 Although the temperate regions of South America are known to have a diverse daphniid fauna, there has been no genetic evaluation of the existing taxonomic system or of the affinities between the North and South American faunas. The present study analyses mitochondrial DNA sequences and allozyme variation to investigate species diversity in 176 Daphnia populations from Argentina. This work established the presence of at least 15 species in Argentina, six of which are either undescribed or are currently misidentified and two of which represent range extensions of North American taxa. Eleven of the Argentine species appear endemic to South America, while the remaining four also occur in North America. In the latter cases, the close genetic similarity between populations from North and South America indicates the recent exchange of propagules between the continents. While biological interactions and habitat availability have undoubtedly contributed to the observed species distributions, chance dispersal has apparently played a dominant role in structuring large-scale biogeographical patterns in this genus and probably in other passively-dispersed organisms. © 2004 The Linnean Society of London. application/pdf http://hdl.handle.net/20.500.12110/paper_00244082_v140_n2_p171_Adamowicz info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Zool. J. Linn. Soc. 2004;140(2):171-205 Allozymes Mitochondrial DNA Molecular systematics Passive dispersal Phylogeography Species boundaries Zooplankton Argentina (fish) Daphnia Species diversity and endemism in the Daphnia of Argentina: A genetic investigation info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00244082_v140_n2_p171_Adamowicz_oai |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-145 |
collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
topic |
Allozymes Mitochondrial DNA Molecular systematics Passive dispersal Phylogeography Species boundaries Zooplankton Argentina (fish) Daphnia |
spellingShingle |
Allozymes Mitochondrial DNA Molecular systematics Passive dispersal Phylogeography Species boundaries Zooplankton Argentina (fish) Daphnia Adamowicz, S.J. Hebert, P.D.N. Marinone, M.C. Species diversity and endemism in the Daphnia of Argentina: A genetic investigation |
topic_facet |
Allozymes Mitochondrial DNA Molecular systematics Passive dispersal Phylogeography Species boundaries Zooplankton Argentina (fish) Daphnia |
description |
Although the temperate regions of South America are known to have a diverse daphniid fauna, there has been no genetic evaluation of the existing taxonomic system or of the affinities between the North and South American faunas. The present study analyses mitochondrial DNA sequences and allozyme variation to investigate species diversity in 176 Daphnia populations from Argentina. This work established the presence of at least 15 species in Argentina, six of which are either undescribed or are currently misidentified and two of which represent range extensions of North American taxa. Eleven of the Argentine species appear endemic to South America, while the remaining four also occur in North America. In the latter cases, the close genetic similarity between populations from North and South America indicates the recent exchange of propagules between the continents. While biological interactions and habitat availability have undoubtedly contributed to the observed species distributions, chance dispersal has apparently played a dominant role in structuring large-scale biogeographical patterns in this genus and probably in other passively-dispersed organisms. © 2004 The Linnean Society of London. |
format |
Artículo Artículo publishedVersion |
author |
Adamowicz, S.J. Hebert, P.D.N. Marinone, M.C. |
author_facet |
Adamowicz, S.J. Hebert, P.D.N. Marinone, M.C. |
author_sort |
Adamowicz, S.J. |
title |
Species diversity and endemism in the Daphnia of Argentina: A genetic investigation |
title_short |
Species diversity and endemism in the Daphnia of Argentina: A genetic investigation |
title_full |
Species diversity and endemism in the Daphnia of Argentina: A genetic investigation |
title_fullStr |
Species diversity and endemism in the Daphnia of Argentina: A genetic investigation |
title_full_unstemmed |
Species diversity and endemism in the Daphnia of Argentina: A genetic investigation |
title_sort |
species diversity and endemism in the daphnia of argentina: a genetic investigation |
publishDate |
2004 |
url |
http://hdl.handle.net/20.500.12110/paper_00244082_v140_n2_p171_Adamowicz http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00244082_v140_n2_p171_Adamowicz_oai |
work_keys_str_mv |
AT adamowiczsj speciesdiversityandendemisminthedaphniaofargentinaageneticinvestigation AT hebertpdn speciesdiversityandendemisminthedaphniaofargentinaageneticinvestigation AT marinonemc speciesdiversityandendemisminthedaphniaofargentinaageneticinvestigation |
_version_ |
1766026612575305728 |