Fish assemblage in a semi-arid Neotropical reservoir: composition, structure and patterns of diversity and abundance

Novaes, José Luís Costa; Moreira, Sylvia; Freire, C. E. C.; Sousa, M. M. O.; Costa, Rodrigo Silva da

doi:10.1590/1519-6984.14712

Cited by 18 publications

(14 citation statements)

References 23 publications

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“…This paradigm has recently changed with the publication of a book chapter entitled "Diversity, patterns of distribution and conservation of fishes from Caatinga" in Rosa et al (2003) listed 240 species of freshwater fishes for the Caatinga biome, comprising the broadest evaluation about the freshwater ichthyofauna from this region to date. Various studies have since been undertaken which the understanding of the regional ichthyofauna through publications, including: Ramos et al (2005), Alves et al (2008), Nascimento et al (2011), Cardoso (2012), Gurgel-Lourenço et al (2013), Novaes et al (2013, Camelier & Zanata (2014), Nascimento et al (2014), Paiva et al (2014), Silva et al (2014), Ramos et al (2014), Silva et al (2015), Gurgel-Lourenço et al (2015), Rodrigues-Filho et al (2016), Costa et al (2017), Teixeira et al (2017) and Oliveira-Silva et al (2018).…”

Section: Introductionmentioning

confidence: 99%

Continental ichthyofauna from the Paraíba do Norte River basin pre-transposition of the São Francisco River, Northeastern Brazil

et al. 2018

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Freshwater ichthyofauna from Brazil Northeast region was considered as being poorly known until recent years, with a considerable number of publications becoming available in the last decade. The present study provides an inventory of freshwater fish species from the Paraíba do Norte River basin located in Paraíba State, Brazil. This inventory is intended to contribute to the of knowledge to the regional fish diversity, pre-transposition of the São Francisco River. Collecting data was obtained from ichthyological databases of both national and foreign institutions. A total of 47 freshwater fish species are registered within the Paraíba do Norte River basin, represented by 38 genera, 20 families and six orders. Characiformes, comprising 47% (22 species), Cichliformes, and Siluriformes are among the most representative orders, 19% (9 species) each, of total recorded species. Seven species of Cichliformes are reported as introduced species in this basin. Cyprinodontiformes and Gobiiformes also registered in this region and correspond to 5% (two species) and Gymnotiformes, Perciformes and Synbranchiformes, 2% (one species each) of total recorded species. Paraíba do Norte River basin stands out in the current national scenario as it comprises the first region from the Mid-Northeastern Caatinga freshwater ecoregion to receive water from the transposition of the São Francisco River. The current inventory is important as it provides scientific data related to the ichthyofauna of Paraíba do Norte River basin prior to the commencement of the river transposition process. An identification key is also given for the freshwater fish species of the region.

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Section: Introductionmentioning

confidence: 99%

Continental ichthyofauna from the Paraíba do Norte River basin pre-transposition of the São Francisco River, Northeastern Brazil

et al. 2018

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“…Despite the various recent studies conducted at Brazilian reservoirs (Petesse and Petrere-Junior, 2012;Araujo et al, 2013;Novaes et al, 2014;Sanches et al, 2016;Montenegro et al, 2012), there are few researchers that have had the opportunity to study the ichthyofauna through scientific monitoring over a long period. Only continuous accompaniment of the environment can construct a long-term investigation that is capable of providing responses that can often not be observed in another manner (Elliott, 1990;Cody, 1996) and assist in possible mitigating actions.…”

Section: Introductionmentioning

confidence: 99%

Structure dynamics of a fish community over ten years of formation in the reservoir of the hydroelectric power plant in upper Uruguay River

Schork

Zaniboni‐Filho

2017

Braz. J. Biol.

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The objective of this study was to evaluate the structure of the fish assemblage in the ten years following the closing of the lake of the Itá Hydroelectric Power Plant. Seasonal collections were conducted from 2001 to 2010. During this period, 44,834 fish were captured, totaling 3,818.01 kg, among 8 orders, 24 families and 84 species. In general, profound changes were not observed in the fish assemblage in the ten years after the formation of the Itá lake. Few species changed in dominance over time, while many were rare in the environment. The ichthyofauna in the reservoir was dominated by small and medium size opportunist species that conduct short or no migratory movements. Among the most abundant, six species were responsible for more than 50% of the numeric representation: Steindachnerina brevipinna, Astyanax fasciatus, Apareiodon affinis, Hypostomus isbrueckeri, Iheringichthys labrosus and Loricariichthys anus. The increase in the representation of the later species stood out. The biomass was dominated by Steindachneridion scriptum, Prochilodus lineatus, I. laborsus, Schizodon nasutus, Hoplias malabaricus, Acestrorhynchus pantaneiro, Hoplias lacerdae, H. isbrueckeri and L. anus. Despite the presence of large migrators in the region of the reservoir, their vulnerability was revealed by the low numeric abundance and accidental capture. The k-dominance curve of numerical abundance and biomass indicates a moderately disturbed community, in which the representation of small species was also important to the amounts of biomass.Keywords: dam, ichthyofauna, southern Brazil, temporal variation, Itá.Dinâmica da estrutura da comunidade íctica ao longo de dez anos da formação do reservatório da usina hidrelétrica no Alto Rio Uruguai Resumo O objetivo deste trabalho foi avaliar a estrutura da assembleia de peixes nos dez anos seguintes ao fechamento do lago da Usina Hidrelétrica de Itá. Para isto, foram realizadas coletas com periodicidade sazonal no período compreendido entre 2001 e 2010. Durante o período de estudo, foram capturados 44834 peixes, totalizando 3818,01 kg, distribuídos em 8 ordens, 24 famílias e 84 espécies. De uma forma geral, a assembleia de peixes não mostrou alterações profundas nos dez anos após a formação do lago de Itá. Poucas espécies alternam-se na dominância ao longo do tempo, enquanto muitas mostraram-se como raras no ambiente. A ictiofauna do reservatório foi dominada por espécies oportunistas, de pequeno e médio porte e que realizam curtos ou nenhum movimento migratório. Entre as mais abundantes, seis espécies foram responsáveis por mais de 50% da representatividade numérica, sendo elas: Steindachnerina brevipinna, Astyanax fasciatus, Apareiodon affinis, Hypostomus isbrueckeri, Iheringichthys labrosus e Loricariichthys anus. Destaque para aumento da representatividade deste último. Já para a biomassa, destacaram-se: Steindachneridion scriptum, Prochilodus lineatus, I. labrosus, Schizodon nasutus, Hoplia smalabaricus, Acestrorhynchus pantaneiro, Hoplias lacerdae, H. isbrueckeri e L. ...

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“…However, in recent decades the number of research articles related to the ichthyofauna diversity of Brazilian semi-arid region has increased (Ramos et al 2005, Novaes et al 2013, Gurgel-Lourenço et al 2013, Silva et al 2014, Silva et al 2015, Gurgel-Lourenço et al 2015.…”

Section: Introductionmentioning

confidence: 99%

Composition of the ichthyofauna in Brazilian semiarid reservoirs

et al. 2017

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The scale of impact that the São Francisco River transposition project will have on the drainage basins ichthyofauna is still unclear, however, changes in the fish community diversity and abundance is probable. Surveys and registries of the fish fauna within key systems of the catchment basins are priority actions for the conservation of the aquatic diversity. This study conducted a taxonomic survey of the Epitácio Pessoa (Boqueirão municipality) and Argemiro de Figueiredo (Itatuba municipality), reservoirs ichthyofauna, both belonging to the Paraíba do Norte River basin, important socioeconomic and environmental systems for the transposition project. Monthly sampling was carried out between October/2014 to September/2015 in the upstream and downstream zones of the reservoirs. The specimens were collected using dip nets, drag nets, and sieves, and placed on ice in the field. Later in the laboratory, they were transferred to 10% formaldehyde and then preserved in 70% alcohol. A total of 2,328 specimens were collected representing five orders, 14 families, and 31 species in both systems. At the upstream zones 2057 specimens were collected representing 17 species, and at the downstream zones 271 specimens were collected representing 24 species. Of the 31 species recorded, 13 species are endemic to watersheds that drain rivers from the Brazilian semi-arid region, and seven species (Apareiodon davisi, Characidium bimaculatum, Hypostomus pusarum, Parotocinclus jumbo, P. spilosoma, Pimelodella enochi, and Prochilodus brevis) are endemic to the Mid-Northeastern Caatinga Ecoregion (MNCE). Among the latter, Parotocinclus spilosoma and Pimelodella enochi are endemic to the Paraíba do Norte River. Apareiodon davisi is classified as Endangered according to the current published Brazil's official list of endangered species of fish and aquatic invertebrates. This pre-transposition ichthyofaunistic survey will serve as a basis for future post-transposition analyzes, considering this action will change the scope of the ecosystems diversity. Keywords: Endemism, Paraíba, Basins Transposition. Composição da ictiofauna em reservatórios do semiárido brasileiroResumo: A dimensão do impacto que a transposição do rio São Francisco provocará na ictiofauna das bacias receptoras ainda é imprecisa, entretanto, é provável que haja alterações na riqueza e abundância da comunidade de peixes. Levantamentos e registros prévios da fauna íctica em sistemas chaves das bacias receptoras são ações prioritárias para a conservação da diversidade aquática. Este estudo realizou o levantamento taxonômico da ictiofauna dos reservatórios Epitácio Pessoa (município de Boqueirão), e Argemiro de Figueiredo (município Itatuba), ambos pertencentes a bacia hidrográfica do rio Paraíba do Norte, estado da Paraíba, importantes sistemas sócioeconômicos e ambientais para o projeto da transposição. Assim, foram realizadas amostragens mensais de Outubro/2014 a Setembro/2015 nas zonas lacustres e a jusante dos reservatórios. Os espécimes foram coletados com red...

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Fish assemblage in a semi-arid Neotropical reservoir: composition, structure and patterns of diversity and abundance

Cited by 18 publications

References 23 publications

Continental ichthyofauna from the Paraíba do Norte River basin pre-transposition of the São Francisco River, Northeastern Brazil

Continental ichthyofauna from the Paraíba do Norte River basin pre-transposition of the São Francisco River, Northeastern Brazil

Structure dynamics of a fish community over ten years of formation in the reservoir of the hydroelectric power plant in upper Uruguay River

Composition of the ichthyofauna in Brazilian semiarid reservoirs

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