Phylogeographic analyses and taxonomic inconsistencies of the Neotropical annual fish Austrolebias minuano, Austrolebias charrua and Austrolebias pongondo (Cyprinodontiformes: Rivulidae)

Fernandes, Murilo de Oliveira; Barbosa, Crislaine; Garcez, Daiana Kaster; Varela, Antônio Sérgio; Volcan, Matheus Vieira; Robe, Lizandra Jaqueline

doi:10.1007/s10641-020-01045-9

Cited by 4 publications

(2 citation statements)

References 49 publications

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“…Furthermore, it has been observed that annual fishes do not perform well in rainy years (Personal observation), where longer hydroperiods decrease embryo viability and promote invasion of predator fish from permanent environments (Lanés et al, 2018). The low vagility hypothesis for annual fishes is supported by phylogenetic (Dorn et al, 2014;Loureiro et al, 2018;van der Merwe et al, 2021) and phylogeographic (Bartáková et al, 2013;de Oliveira Fernandes et al, 2021;Garcez et al, 2018;García et al, 2012) studies of different annual fish taxa. Closely related species present allopatric and small range distributions, and populations within them are often genetically highly structured.…”

Section: Introductionmentioning

confidence: 97%

River drainage rearrangements and the phylogeographic pattern of the annual fish Austrolebias arachan (Cyprinodontiformes, Rivulidae)

Loureiro,

Stareczek,

D'anatro

et al. 2023

Zoologica Scripta

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Palaeogeographical and climatic processes are among the main factors affecting biological diversity and distribution patterns. In freshwater systems, major dispersal processes are caused by river drainage rearrangements where the direction of flow of a stream changes, allowing range expansions and connection of previously isolated communities. In the Neotropical region, this process has been known to connect part of the southwestern Amazon basin with La Plata basin during the formation of the Bolivian Orocline, and La Plata basin with Atlantic coastal basins since the split from Africa. Several species of annual fishes of the genus Austrolebias are known to inhabit seasonal ponds both in the Rio Negro basin (southern tip of Brazilian shield, Lower Uruguay ecoregion), and the headwaters of rivers draining into the Merín lagoon (coastal drainages, Laguna dos Patos ecoregion). The aim of this article was to analyse the phylogeographic pattern of Austrolebias arachan in the context of putative river rearrangements. Two hypotheses were tested: (a) the spatial configuration of river basins determines the genetic structure and distribution of this species, and (b) coastal drainages captured sections of upland shield river drainages. We analysed a fragment of the mitochondrial cytochrome b gene and a fragment of a nuclear intron locus. Results support the prediction of the first hypothesis: geographic variation within A. arachan is structured according to geography. The second hypothesis was in part confirmed: the migration analyses showed that Rio Negro basin populations could have acted as a source for Laguna Merin basin. However, migration estimates also support gene flow in the opposite direction. The cytochrome b haplotype network configuration and its phylogenetic pattern suggests at least two independent events of capture, with divergence time estimated at the onset of Pleistocene glacial cycles.

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Section: Introductionmentioning

confidence: 97%

River drainage rearrangements and the phylogeographic pattern of the annual fish Austrolebias arachan (Cyprinodontiformes, Rivulidae)

Loureiro,

Stareczek,

D'anatro

et al. 2023

Zoologica Scripta

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“…Two species of the 'Austrolebias adloffi' species group have been reported in the lowlands associated with the Laguna Merin basin in Uruguay (Loureiro et al, 2018;García et al, 2020): Austrolebias reicherti Loureiro & García 2004 to the north east and Austrolebias charrua Costa & Cheffe 2002 to the south east, which is also distributed in southern Brazil (de Oliveira Fernandes et al, 2021) (Figure 1). Previous studies have used different approaches (morphological, genetic, and biogeographical) to characterize A. charrua populations, as well as the phylogenetic relationships among the remaining species of this group (Costa, 2006;García et al, 2009;García et al, 2016;Loureiro et al, 2018;García et al, 2019;García et al, 2020;de Oliveira Fernandes et al, 2021). ancestral hybridization that extend to the present time (Figure 1) (García et al, 2009;García et al, 2019;García et al, 2020).…”

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An isolated population of Austrolebias charrua (Rivulidae, Cyprinodontiformes) detected in a fragile ecosystem (Maldonado, Uruguay)

Mello

Canavero

Ríos

et al. 2021

Aquatic Conservation

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1. Annual killifishes inhabit seasonal ponds and wetlands that dry out completely during the dry season, and tend to present very restricted distributions, meaning that local extinctions can lead to the disappearance of entire populations. 2. Using morphological and genetic approaches the present study identifies a new population of Austrolebias charrua in an isolated area of the lower basin of Maldonado stream (Atlantic Ocean coastal basin) in Uruguay. 3. The new population extends the previous area of occurrence by 20 km 2 , 100 km to the south of previous records, and shows some genetic and morphological characteristics that indicate it is isolated from other populations in the previously known range.4. This species has been catalogued as a priority for conservation by the National System of Protected Areas of Uruguay; the new record does not significantly affect the size of the area of occupation of the species.5. The new site, located in the Alameda de San Carlos, is a small area that suffers human threats that may lead to environmental impacts and thus jeopardize the conservation of this population.

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A Pilot Study of Gene Expression Modulation from Antioxidant System of Killifish Austrolebias charrua After Exposure to Roundup Transorb®

Gonçalves,

Silveira,

Martins

et al. 2024

Bull Environ Contam Toxicol

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Phylogeographic analyses and taxonomic inconsistencies of the Neotropical annual fish Austrolebias minuano, Austrolebias charrua and Austrolebias pongondo (Cyprinodontiformes: Rivulidae)

Cited by 4 publications

References 49 publications

River drainage rearrangements and the phylogeographic pattern of the annual fish Austrolebias arachan (Cyprinodontiformes, Rivulidae)

River drainage rearrangements and the phylogeographic pattern of the annual fish Austrolebias arachan (Cyprinodontiformes, Rivulidae)

An isolated population of Austrolebias charrua (Rivulidae, Cyprinodontiformes) detected in a fragile ecosystem (Maldonado, Uruguay)

A Pilot Study of Gene Expression Modulation from Antioxidant System of Killifish Austrolebias charrua After Exposure to Roundup Transorb®

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