Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals

Conte-Grand, Cecilia; Sommer, Julie A.; Ortı́, Guillermo; Cussac, Víctor E.

doi:10.1590/1982-0224-20130094

Cited by 17 publications

(11 citation statements)

References 36 publications

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“…The divergence of sequences from Lake Llanquihue and the Pescado River from its sister clade formed by the O. regia–smitti haplogroup dated to the Pleistocene (mean age 744,000 years ago, 95% HPD 1.2 million to 154,700 years ago; Appendix : Figure ). Sequences obtained from Patagonian O. hatcheri clustered into a distinct haplogroup, with the exception of some hybrid individuals that carried O. bonariensis haplotypes, where this species has been introduced into Patagonia (Conte‐Grand et al, ; Rueda et al, ). Another clade includes haplotypes from species associated with the Atlantic Basin (marine O. argentinensis , and freshwater O. bonariensis , O. ledae , O. mirinensis , O. perugiae and O. piquava ) that did not sort according to species boundaries (Figure a; Appendix : Figure ).…”

Section: Resultsmentioning

confidence: 99%

“…This data set expands upon a published set of sequences collected to investigate putative hybridization between O. hatcheri and introduced O. bonariensis (Conte‐Grand, Sommer, Ortí, & Cussac, ; Rueda et al, ). We used the forward primer GLU31 (Unmack et al, ) and the Odontesthes ‐specific reverse primer Pej15929 (Conte‐Grand et al, ) to amplify the target fragment of the cyt b mitochondrial gene, following the same protocol as Rueda et al (). PCR products were purified on 96‐well Excelapure plates (Edge Biosystems), and cycle‐sequenced at the Brigham Young University DNA sequencing centre.…”

Section: Methodsmentioning

confidence: 99%

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Biogeography, habitat transitions and hybridization in a radiation of South American silverside fishes revealed by mitochondrial and genomic RAD data

et al. 2020

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Rivers and lake systems in the southern cone of South America have been widely influenced by historical glaciations, carrying important implications for the evolution of aquatic organisms, including prompting transitions between marine and freshwater habitats and by triggering hybridization among incipient species via waterway connectivity and stream capture events. Silverside fishes (Odontesthes) in the region comprise a radiation of 19 marine and freshwater species that have been hypothesized on the basis of morphological or mitochondrial DNA data to have either transitioned repeatedly into continental waters from the sea or colonized marine habitats following freshwater diversification. New double digest restriction‐site associated DNA data presented here provide a robust framework to investigate the biogeographical history of and habitat transitions in Odontesthes. We show that Odontesthes silversides originally diversified in the Pacific but independently colonized the Atlantic three times, producing three independent marine‐to‐freshwater transitions. Our results also indicate recent introgression of marine mitochondrial haplotypes into two freshwater clades, with more recurring instances of hybridization among Atlantic‐ versus Pacific‐slope species. In Pacific freshwater drainages, hybridization with a marine species appears to be geographically isolated and may be related to glaciation events. Substantial structural differences of estuarine gradients between these two geographical areas may have influenced the frequency, intensity and evolutionary effects of hybridization events.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Biogeography, habitat transitions and hybridization in a radiation of South American silverside fishes revealed by mitochondrial and genomic RAD data

et al. 2020

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“…(Hashimoto, Senhorini, Foresti, Martínez, & Porto‐Foresti, ; Vaini, Grisolia, Prado, & Porto‐Foresti, ) and Odonthestes sp. (Conte‐Grand, Sommer, Ortí, & Cussac, ). As the perils of a careless stocking programme seem high, stock enhancement for conservation purposes should be considered only when factors limiting stock recovery have been removed or reduced, such as by improvements in water quality, habitat rehabilitation or removal of barriers to migration (Collares‐Pereira & Cowx, ).…”

Section: Discussionmentioning

confidence: 99%

“…(Hashimoto, Senhorini, Foresti, Martínez, & Porto-Foresti, 2014;Vaini, Grisolia, Prado, & Porto-Foresti, 2014) and Odonthestes sp. (Conte-Grand, Sommer, Ortí, & Cussac, 2015).…”

Section: Implications For Conservation and Managementmentioning

confidence: 99%

Basin‐scale distribution and haplotype partitioning in different genetic lineages of the Neotropical migratory fish Salminus brasiliensis

Rosso

Rueda

Sánchez

et al. 2017

Aquatic Conservation

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Four valid species are currently recognized in the Neotropical migratory genus Salminus: Salminus brasiliensis, Salminus franciscanus, Salminus hilarii and Salminus affinis. However, molecular evidence strongly suggested that two different species might be contained under the taxonomic denomination Salminus brasiliensis. Therefore, the geographical distribution of each entity was evaluated in order to understand their contribution to the different stocks of major river networks in South America. Major river networks of the La Plata River basin were explored to characterize the geographical distribution of the two genetic lineages. To characterize further the genetic partitioning within each lineage of S. brasiliensis, a haplotype analysis was conducted. The 5′ region of the mitochondrial COI gene was used as the molecular marker. In total, 45 fish samples of S. brasiliensis from 19 sites in Argentina, Brazil and Paraguay were sequenced. Additional COI sequences of S. brasiliensis, S. franciscanus and S. hilarii were gathered from public databases. All samples of S. brasiliensis comprised two different mitochondrial lineages. Accordingly, phylogenetic tree topologies segregated the complete set of sequences into two disparate clusters. One of these clusters was far closer phylogenetically to S. hilarii than to other S. brasiliensis. While one of the genetic lineages of S. brasiliensis seemed mostly restricted to the upper Paraná River, the other showed a widespread distribution along major river networks of the basin. Fifteen unique haplotypes were identified and collapsed. Salminus hilarii and S. franciscanus have private haplotypes. In S. brasiliensis, each mitochondrial lineage also hosts a set of unshared haplotypes. The sympatry of two different putative species within S. brasiliensis together with their unshared haplotypes present a difficult situation for management and conservation that calls for timely solutions.

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“…The negative impacts of stocking are not restricted to species homogenization; for example, the introduction of the Argentinian silverside significantly affected the structure and function of Laguna El Estado, producing a cascade effect on other components (Grosman & Sanzano, 2003). Moreover, Conte-Grand et al (2015) showed that the introductions have allowed the introgression of O. bonariensis genome into several populations of O. hatcheri. Thus it is important to take precautions when species dispersion is assisted by humans, especially when the species in question has invasive characteristics such as being a good colonizer (Grosman & Sanzano, 2003) and possessing broad environmental tolerance (Marchetti et al, 2004).…”

Section: Population Genetic Structurementioning

confidence: 99%

Genetic population structure and evidence of genetic homogeneity in populations of the Argentinian silverside Odontesthes bonariensis (Teleostei: Atherinopsidae) inhabiting central and northwestern Argentina

Valencia

Véliz

Tombari

et al. 2017

lajar

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ABSTRACT. The study of species in their native geographic ranges is key to understanding how human activity has influenced spatial fragmentation or species homogenization. The Argentinian silverside Odontesthes bonariensis, of interest for aquiculture and sport fishing, is a relevant subject of study. The species has been introduced in a number of countries and re-introduced in some areas of Argentina with unknown effects. The objectives of this study were to determine the population structure, genetic diversity (GD) and effective population sizes (Ne) of O. bonariensis in Argentina. Six microsatellite loci were amplified in individuals collected from four water bodies affected by commercial and sport fishing: Cabra Corral Reservoir (CC), Chascomús Lake (CH), Chasicó Lake (LCH) and the Río de la Plata (RLP). Three genetic groups were detected: one in CC, one in RLP and the last inhabiting CH and LCH. Interestingly, CH and LCH are located 768 km apart, but showed no difference in allele frequencies; suggesting the introduction of individuals from CH into LCH. The largest allele richness, GD and Ne were found in RLP indicating that the largest population of O. bonariensis may be found in this area. Current Ne were lower than historical Ne in all areas, suggesting a change in the GD over time. This study provides information on the genetic structure and genetic diversity of O. bonariensis across its native distribution and over time, demonstrating the first evidence of a possible genetic homogenization in this species probably linked to human activities.

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Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals

Cited by 17 publications

References 36 publications

Biogeography, habitat transitions and hybridization in a radiation of South American silverside fishes revealed by mitochondrial and genomic RAD data

Biogeography, habitat transitions and hybridization in a radiation of South American silverside fishes revealed by mitochondrial and genomic RAD data

Basin‐scale distribution and haplotype partitioning in different genetic lineages of the Neotropical migratory fish Salminus brasiliensis

Genetic population structure and evidence of genetic homogeneity in populations of the Argentinian silverside Odontesthes bonariensis (Teleostei: Atherinopsidae) inhabiting central and northwestern Argentina

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