Species diversity and endemism in the Daphnia of Argentina: A genetic investigation

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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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Autores principales: Adamowicz, S.J., Hebert, P.D.N., Marinone, M.C.
Formato: JOUR
Materias:
Allozymes
Mitochondrial DNA
Molecular systematics
Passive dispersal
Phylogeography
Species boundaries
Zooplankton
Argentina (fish)
Daphnia
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00244082_v140_n2_p171_Adamowicz
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00244082_v140_n2_p171_Adamowicz
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spelling todo:paper_00244082_v140_n2_p171_Adamowicz2023-10-03T14:35:08Z Species diversity and endemism in the Daphnia of Argentina: A genetic investigation Adamowicz, S.J. Hebert, P.D.N. Marinone, M.C. Allozymes Mitochondrial DNA Molecular systematics Passive dispersal Phylogeography Species boundaries Zooplankton Argentina (fish) Daphnia 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00244082_v140_n2_p171_Adamowicz
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (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 JOUR
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
url http://hdl.handle.net/20.500.12110/paper_00244082_v140_n2_p171_Adamowicz
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AT marinonemc speciesdiversityandendemisminthedaphniaofargentinaageneticinvestigation
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