Processes that drive the population structuring of Jenynsia lineata (Cyprinidontiformes, Anablepidae) in the La Plata Basin

1. The distribution of genetic diversity across a species distribution range is rarely homogeneous, as the genetic structure among populations is related to the degree of isolation among them, such as isolation by distance, isolation by barrier, and isolation by environment. 2. Jenynsia lineata is...

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Autores principales: Briñoccoli, Yanina F., Jardim de Queiroz, Luiz, Bogan, Sergio, Paracampo, Ariel Hernán, Posadas, Paula Elena, Somoza, Gustavo M., Montoya Burgos, Juan I., Cardoso, Yamila Paula
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Ecología
Basin fragmentation
COI
Genetic structure
Intraspecific variation
Isolatiion
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/119180
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-119180
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ecología
Basin fragmentation
COI
Genetic structure
Intraspecific variation
Isolatiion
spellingShingle Ecología
Basin fragmentation
COI
Genetic structure
Intraspecific variation
Isolatiion
Briñoccoli, Yanina F.
Jardim de Queiroz, Luiz
Bogan, Sergio
Paracampo, Ariel Hernán
Posadas, Paula Elena
Somoza, Gustavo M.
Montoya Burgos, Juan I.
Cardoso, Yamila Paula
Processes that drive the population structuring of Jenynsia lineata (Cyprinidontiformes, Anablepidae) in the La Plata Basin
topic_facet Ecología
Basin fragmentation
COI
Genetic structure
Intraspecific variation
Isolatiion
description 1. The distribution of genetic diversity across a species distribution range is rarely homogeneous, as the genetic structure among populations is related to the degree of isolation among them, such as isolation by distance, isolation by barrier, and isolation by environment. 2. Jenynsia lineata is a small viviparous fish that inhabits a wide range of habitats in South America. To decipher the isolation processes that drive population structuring in J. lineata, we analyzed 221 sequences of the mitochondrial cytochrome c oxidase I gene (COI), from 19 localities. Then, we examined the influence of the three most common types of isolation in order to explain the genetic variation found in this species. 3. Our results revealed a marked structuration, with three groups: (a) La Plata/ Desaguadero Rivers (sampling sites across Argentina, Uruguay, and Southern Brazil), (b) Central Argentina, and (c) Northern Argentina. A distance-based redundancy analysis, including the explanatory variables geographical distances, altitude, latitude, and basin, was able to explain up to 65% of the genetic structure. A variance partitioning analysis showed that the two most important variables underlying the structuration in J. lineata were altitude (isolation by environment) and type of basin (isolation by barrier). 4. Our results show that in this species, the processes of population diversification are complex and are not limited to a single mechanism. The processes that play a prominent role in this study could explain the high rate of diversity that characterizes freshwater fish species. And these processes in turn are the basis for possible speciation events.
format Articulo
Articulo
author Briñoccoli, Yanina F.
Jardim de Queiroz, Luiz
Bogan, Sergio
Paracampo, Ariel Hernán
Posadas, Paula Elena
Somoza, Gustavo M.
Montoya Burgos, Juan I.
Cardoso, Yamila Paula
author_facet Briñoccoli, Yanina F.
Jardim de Queiroz, Luiz
Bogan, Sergio
Paracampo, Ariel Hernán
Posadas, Paula Elena
Somoza, Gustavo M.
Montoya Burgos, Juan I.
Cardoso, Yamila Paula
author_sort Briñoccoli, Yanina F.
title Processes that drive the population structuring of Jenynsia lineata (Cyprinidontiformes, Anablepidae) in the La Plata Basin
title_short Processes that drive the population structuring of Jenynsia lineata (Cyprinidontiformes, Anablepidae) in the La Plata Basin
title_full Processes that drive the population structuring of Jenynsia lineata (Cyprinidontiformes, Anablepidae) in the La Plata Basin
title_fullStr Processes that drive the population structuring of Jenynsia lineata (Cyprinidontiformes, Anablepidae) in the La Plata Basin
title_full_unstemmed Processes that drive the population structuring of Jenynsia lineata (Cyprinidontiformes, Anablepidae) in the La Plata Basin
title_sort processes that drive the population structuring of jenynsia lineata (cyprinidontiformes, anablepidae) in the la plata basin
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/119180
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