Updated checklist and DNA barcode‐based species delimitations reveal taxonomic uncertainties among freshwater fishes from the mid‐north‐eastern Caatinga ecoregion, north‐eastern Brazil

Berbel‐Filho, Waldir M.; Ramos, Telton Pedro Anselmo; Jacobina, Uedson Pereira; Maia, Danielle J. G.; Torres, Rodrigo A.; Lima, Sérgio M. Q.

doi:10.1111/jfb.13758

Cited by 18 publications

(10 citation statements)

References 59 publications

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“…However, one year later, the São Francisco waters reached Poções reservoirs and M. costae was already established. Moenkhausia costae and M. intermedia (Eigenman 1908) have already been reported in the NCCD ecoregion in the Apodi-Mossoró, Choró and Jaguaribe Rivers basins (Lima et al 2017, Berbel-Filho et al 2018. However, no individual from this genus had ever been registered in the Paraíba do Norte River basin before the São Francisco River diversion (Costa et al 2017.…”

Section: Discussionmentioning

confidence: 99%

First record of Moenkhausia costae (Steindachner 1907) in the Paraíba do Norte basin after the São Francisco River diversion

et al. 2021

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Construction of water diversions in drylands is boosted by increasing demands for freshwater often due to prolonged droughts. Even though these mega-enterprises result in benefits to society, it also poses a threat to freshwater biodiversity. In Northeastern Brazil, for instance, the São Francisco River Integration Project already supplies water for millions of people, but over time it will also favor the introductions of multiple aquatic species in the river basins of the Northeastern Caatinga and Coastal Drainages ecoregion. These introductions can cause unprecedented impacts in the native ichthyofauna, such as homogenization of freshwater faunas, transmission of pathogens and loss of native species. This study compares the composition and relative frequency of fish species from Poções reservoir using data obtained by gillnetting and trawling before and after the São Francisco diversion in the dry and rainy seasons, and reports the first detection of Moenkhausia costae introduction in the Paraíba do Norte basin, through the São Francisco River channel. Our results show some evidences that M. costae may become dominant and invasive in Poções reservoir. The introduction of M. costae adds a new component of disruption for these freshwaters and may pose a serious threat to the endemic ichthyofauna in lentic and lotic systems from the Paraíba do Norte basin.

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Section: Discussionmentioning

confidence: 99%

First record of Moenkhausia costae (Steindachner 1907) in the Paraíba do Norte basin after the São Francisco River diversion

et al. 2021

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“…Lopes-Lima et al 2019) or uncovering potentially cryptic species (e.g. Pan et al 2019) in many organisms, including freshwater fishes (Patil et al 2018;Berbel-Filho et al 2018;Corral-Lou et al 2019). The results of such methods are dependent on the choice of samples and loci (Ritchie et al 2016;Sukumaran and Knowles 2017) and must be carefully interpreted.…”

Section: Introductionmentioning

confidence: 99%

Global systematic diversity, range distributions, conservation and taxonomic assessments of graylings (Teleostei: Salmonidae; Thymallus spp.)

et al. 2020

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Graylings (Thymallus) are among the less well-studied groups of salmonid fishes, especially across their Asian distribution range. Here we perform a comprehensive global review of their phylogeography, systematic diversity and range distributions, including biogeographic reconstruction and assessment of both conservation and taxonomic status of each species. Based on a mitogenomic phylogenetic analysis, three approaches to the delineation of molecular operational units, and evaluation of 15 a-priori defined species, we provide biological support for the recognition of 13 grayling species, plus two additional species tentatively. Several instances of paraphyly and its potential effect on systematic inferences are discussed. Overall, the genus displays increasing species diversity and decreasing range size from higher to lower latitudes and ancestral trait reconstruction supports an East Asian origin for extant diversity, most likely centred in the Amur River drainage. Europe’s colonization by Thymallus took place as early as the late Miocene, at least two colonisations of North America are supported, and multiple dispersal events likely took place into Western Siberia. The conservation status for the 15 taxa was estimated to be: 6 least concern, 1 near-threatened, 2 vulnerable, 3 endangered and 3 data deficient.

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“…Due to its particular hydrological regime, MNCE has been historically considered as a scientifically neglected region for freshwater fish surveys (Lévêque et al 2008). However, recent studies have pointed out that the MNCE's ichthyofauna is relatively rich, consisting of around 90 species, approximately 30% endemic (Lima et al 2017;Berbel-Filho et al 2018). Historical negligence in MNCE explains why so far only four freshwater fish species are considered threatened in the ecoregion, besides many human-induced impacts on aquatic habitats, most of them related to the water shortage (Lima et al 2017, ICMBio 2018.…”

Section: Introductionmentioning

confidence: 99%

“…For the MNCE, only four valid species of seasonal killifish are known, namely Cynolebias microphthalmus Costa & Brasil, 1995, Hypsolebias antenori (Tulipano, 1973), H. martinsi Britzke, D. T. B. Nielsen & C. de Oliveira, 2016 andH. longignatus (Costa, 2008), all endemic to this ecoregion (Tulipano 1973;Costa 1995;2008;Britz-ke et al 2016;Berbel-Filho et al 2018). Among these species, only H. longignatus is currently on the Brazilian red list of threatened fish species, in the vulnerable category, due to the risk of habitat loss to agricultural activities within its restricted geographic distribution (ICMBio 2018).…”

Section: Introductionmentioning

confidence: 99%

Geographic distribution and conservation of seasonal killifishes (Cyprinodontiformes, Rivulidae) from the Mid-Northeastern Caatinga ecoregion, northeastern Brazil

Abrantes¹,

Medeiros²,

Bennemann³

et al. 2020

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The Rivulidae fish family, which includes Neotropical seasonal killifishes, is one of the most diverse taxonomic groups in the aquatic systems of Caatinga in Brazil. Cynolebias and Hypsolebias genera, with 20 and 35 endemic species, respectively, concentrate the greatest diversity of rivulid species in the semiarid. Sixty-eight years after the first records of annual killifishes in the Mid-Northeastern Caatinga ecoregion (MNCE), only four valid species have been sampled in this area. Here we combined bibliographic surveys and recent samplings to investigate the distribution of seasonal rivulids in MNCE. Twenty-one records were obtained, nine of which are new localities, expanding the distribution of three species: Hypsolebias martinsi, H. antenori and Cynolebias microphthalmus. Hypsolebias&nbsp;longignatus is still only known from its type locality in Ceará, near the Environmental Protection Area in Pacoti River, and has not been sampled ever since its description in 2008. Among the four species present in MNCE, H. antenori is the only species occurring within the limits of a conservation unit in the Furna Feia National Park. Anthropogenic impacts were observed in most temporary habitats visited, which ranged from river channel to small ponds in cave entrances. All records are found in coastal basins that discharge in the northern coast of the MNCE, in Ceará and Rio Grande do Norte states, which are crucial for the conservation of the Caatinga’s killifishes. The results also evidenced the importance of karstic habitats in the Jandaíra Formation as potential biotopes for seasonal fish in MNCE. This information must be used to update the conservation status of these species and highlight the importance of strategies for preserving the Caatinga’s temporary aquatic habitats, which should be considered for environmental licensing purposes.

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Updated checklist and DNA barcode‐based species delimitations reveal taxonomic uncertainties among freshwater fishes from the mid‐north‐eastern Caatinga ecoregion, north‐eastern Brazil

Cited by 18 publications

References 59 publications

First record of Moenkhausia costae (Steindachner 1907) in the Paraíba do Norte basin after the São Francisco River diversion

First record of Moenkhausia costae (Steindachner 1907) in the Paraíba do Norte basin after the São Francisco River diversion

Global systematic diversity, range distributions, conservation and taxonomic assessments of graylings (Teleostei: Salmonidae; Thymallus spp.)

Geographic distribution and conservation of seasonal killifishes (Cyprinodontiformes, Rivulidae) from the Mid-Northeastern Caatinga ecoregion, northeastern Brazil

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