Delimitation of evolutionary units in Cuvier’s dwarf caiman, Paleosuchus palpebrosus (Cuvier, 1807): insights from conservation of a broadly distributed species
An important goal of evolutionary and conservation biology is the identification of units below the species level, such as Evolutionarily Significant Units (ESUs), providing objectively delimited units for species conservation and management. In this study we tested the hypothesis that Cuvier’s dwar...
| Autor principal: | Muniz, Fábio L. |
|---|---|
| Outros Autores: | Campos, Zilca M.S., Hernández-Rangel, Sandra Marcela, Martínez, José Gregório, Souza, Bruno Campos, Thoisy, Benoît de, Botero-Arias, Robinson, Hrbek, Tomas, Farias, Izeni P. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Conservation Genetics
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/16920 |
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oai:repositorio:1-16920 |
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oai:repositorio:1-16920 Delimitation of evolutionary units in Cuvier’s dwarf caiman, Paleosuchus palpebrosus (Cuvier, 1807): insights from conservation of a broadly distributed species Muniz, Fábio L. Campos, Zilca M.S. Hernández-Rangel, Sandra Marcela Martínez, José Gregório Souza, Bruno Campos Thoisy, Benoît de Botero-Arias, Robinson Hrbek, Tomas Farias, Izeni P. Biodiversity Biome Conservation Genetics Conservation Management Conservation Status Crocodilian Cytochrome Evolutionary Biology Gene Flow Genetic Variation Geographical Distribution Identification Method Species Conservations Watershed Amazonia Bolivia Madeira Pantanal Portugal Crocodylidae (all Crocodiles) Paleosuchus Palpebrosus An important goal of evolutionary and conservation biology is the identification of units below the species level, such as Evolutionarily Significant Units (ESUs), providing objectively delimited units for species conservation and management. In this study we tested the hypothesis that Cuvier’s dwarf caiman (Paleosuchus palpebrosus)—a species broadly distributed across several biomes and watersheds of South America—is comprised of different ESUs. We analyzed mitochondrial cytochrome b sequences of 206 individuals and 532 unlinked ddRAD loci of 20 individuals chosen from amongst the mitochondrial haplogroups. Analysis of the cytochrome b sequences revealed four mitochondrial clusters, while STRUCTURE analysis of ddRAD loci detected three genomic clusters with different levels of mixture between them. Using the Adaptive Evolutionary Conservation (AEC) framework we identified three ESUs: “Amazon”, “Madeira-Bolivia” and “Pantanal”; one of them composed of two different Management Units (MUs), “Madeira” and “Bolivia”. In general, based on the comparisons with other crocodilian species, genetic diversity of each lineage was moderate however, the Madeira MU showed fivefold lower genetic diversity than other geographic groups. Considering the particularities of each Paleosuchus palpebrosus conservation unit, we recommend that the conservation status of each is evaluated separately. Tropical biodiversity is largely underestimated and in this context the broadly distributed species are the most likely candidates to harbor distinct evolutionary lineages. Thus, we suggest that conservation research should not neglect species that are generally considered of Least Concern by IUCN due to the taxon’s broad geographic distribution. © 2017, Springer Science+Business Media B.V., part of Springer Nature. 2020-06-15T21:37:19Z 2020-06-15T21:37:19Z 2018 Artigo https://repositorio.inpa.gov.br/handle/1/16920 10.1007/s10592-017-1035-6 en Volume 19, Número 3, Pags. 599-610 Restrito Conservation Genetics |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Biodiversity Biome Conservation Genetics Conservation Management Conservation Status Crocodilian Cytochrome Evolutionary Biology Gene Flow Genetic Variation Geographical Distribution Identification Method Species Conservations Watershed Amazonia Bolivia Madeira Pantanal Portugal Crocodylidae (all Crocodiles) Paleosuchus Palpebrosus |
| spellingShingle |
Biodiversity Biome Conservation Genetics Conservation Management Conservation Status Crocodilian Cytochrome Evolutionary Biology Gene Flow Genetic Variation Geographical Distribution Identification Method Species Conservations Watershed Amazonia Bolivia Madeira Pantanal Portugal Crocodylidae (all Crocodiles) Paleosuchus Palpebrosus Muniz, Fábio L. Delimitation of evolutionary units in Cuvier’s dwarf caiman, Paleosuchus palpebrosus (Cuvier, 1807): insights from conservation of a broadly distributed species |
| topic_facet |
Biodiversity Biome Conservation Genetics Conservation Management Conservation Status Crocodilian Cytochrome Evolutionary Biology Gene Flow Genetic Variation Geographical Distribution Identification Method Species Conservations Watershed Amazonia Bolivia Madeira Pantanal Portugal Crocodylidae (all Crocodiles) Paleosuchus Palpebrosus |
| description |
An important goal of evolutionary and conservation biology is the identification of units below the species level, such as Evolutionarily Significant Units (ESUs), providing objectively delimited units for species conservation and management. In this study we tested the hypothesis that Cuvier’s dwarf caiman (Paleosuchus palpebrosus)—a species broadly distributed across several biomes and watersheds of South America—is comprised of different ESUs. We analyzed mitochondrial cytochrome b sequences of 206 individuals and 532 unlinked ddRAD loci of 20 individuals chosen from amongst the mitochondrial haplogroups. Analysis of the cytochrome b sequences revealed four mitochondrial clusters, while STRUCTURE analysis of ddRAD loci detected three genomic clusters with different levels of mixture between them. Using the Adaptive Evolutionary Conservation (AEC) framework we identified three ESUs: “Amazon”, “Madeira-Bolivia” and “Pantanal”; one of them composed of two different Management Units (MUs), “Madeira” and “Bolivia”. In general, based on the comparisons with other crocodilian species, genetic diversity of each lineage was moderate however, the Madeira MU showed fivefold lower genetic diversity than other geographic groups. Considering the particularities of each Paleosuchus palpebrosus conservation unit, we recommend that the conservation status of each is evaluated separately. Tropical biodiversity is largely underestimated and in this context the broadly distributed species are the most likely candidates to harbor distinct evolutionary lineages. Thus, we suggest that conservation research should not neglect species that are generally considered of Least Concern by IUCN due to the taxon’s broad geographic distribution. © 2017, Springer Science+Business Media B.V., part of Springer Nature. |
| format |
Artigo |
| author |
Muniz, Fábio L. |
| author2 |
Campos, Zilca M.S. Hernández-Rangel, Sandra Marcela Martínez, José Gregório Souza, Bruno Campos Thoisy, Benoît de Botero-Arias, Robinson Hrbek, Tomas Farias, Izeni P. |
| author2Str |
Campos, Zilca M.S. Hernández-Rangel, Sandra Marcela Martínez, José Gregório Souza, Bruno Campos Thoisy, Benoît de Botero-Arias, Robinson Hrbek, Tomas Farias, Izeni P. |
| title |
Delimitation of evolutionary units in Cuvier’s dwarf caiman, Paleosuchus palpebrosus (Cuvier, 1807): insights from conservation of a broadly distributed species |
| title_short |
Delimitation of evolutionary units in Cuvier’s dwarf caiman, Paleosuchus palpebrosus (Cuvier, 1807): insights from conservation of a broadly distributed species |
| title_full |
Delimitation of evolutionary units in Cuvier’s dwarf caiman, Paleosuchus palpebrosus (Cuvier, 1807): insights from conservation of a broadly distributed species |
| title_fullStr |
Delimitation of evolutionary units in Cuvier’s dwarf caiman, Paleosuchus palpebrosus (Cuvier, 1807): insights from conservation of a broadly distributed species |
| title_full_unstemmed |
Delimitation of evolutionary units in Cuvier’s dwarf caiman, Paleosuchus palpebrosus (Cuvier, 1807): insights from conservation of a broadly distributed species |
| title_sort |
delimitation of evolutionary units in cuvier’s dwarf caiman, paleosuchus palpebrosus (cuvier, 1807): insights from conservation of a broadly distributed species |
| publisher |
Conservation Genetics |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/16920 |
| _version_ |
1787144339322830848 |
| score |
11.755432 |