&lt;b&gt;Allozyme analysis of the four species of &lt;i&gt;Hypostomus&lt;/i&gt; (Teleostei: Loricariidae) from the Ivaí river, upper Paraná river basin, Brazil&lt;/b&gt; - doi: 10.4025/actascibiolsci.v35i4.16355

Paiva, Suzana de; Zawadzki, Cláudio Henrique; Ruvulo-Takasusuki, Maria Claudia Colla; Lapenta, Ana Sílvia; Renesto, Erasmo

doi:10.4025/actascibiolsci.v35i4.16355

Cited by 5 publications

(3 citation statements)

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“…There are only few surveys on fish fauna in the Ivaí River basin, especially for the tributaries, Barra Bonita River (Maier et al 2008), Bonito River (Viana et al 2013), some streams located in the Perobas Biological Reserve (Delariva & Silva 2013) and a first-order stream in the municipality of Marialva (Araújo et al 2011); and there are few genetic studies with some species of Loricariidae (Zawadzki et al 2004, Portela-Castro et al 2007, Paiva et al 2013 or ecological studies (Luiz et al 2003, Luiz et al 2005) and description of new species (Graça & Pavanelli 2008, Roxo et al 2014, Tencatt et al 2014, Zawadzki et al 2016) with fish of this basin.…”

Section: Introductionmentioning

confidence: 99%

Inventory of the fish fauna from Ivaí River basin, Paraná State, Brazil

et al. 2016

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Abstract:We compiled data on fish fauna of the Ivaí River basin from recent specialised literature, standardised sampling and records of species deposited in fish collections. There were 118 fish species of eight orders and 29 families. Of these, 100 species are autochthonous (84.8%), 13, allochthonous (11.0%) and five, exotic (4.2%). The main causes for the occurrence of non-native species are escapes from aquaculture, introduction for fishing purposes and the construction of the Itaipu hydroelectric plant. The predominance of small and medium-sized Characiformes and Siluriformes, including 13 species new to science, accounts for approximately 11.0% of all species and 13.0% of all native species. About 10.2% of all species and 12.0% of all native species are endemic to the upper stretch of the Ivaí River, isolated by numerous waterfalls in tributary rivers and streams. The Ivaí River basin is subjected to various anthropogenic interferences such as pollution, eutrophication, siltation, construction of dams, flood control, fisheries, species introduction and release of fingerlings. These activities raise concerns about biodiversity of Brazilian inland waters especially regarding the fish fauna; the basin of the Ivaí River already has species classified in categories of extinction risk: Brycon nattereri and Apareiodon vladii (Vulnerable) and Characidium heirmostigmata and Steindachneridion scriptum (Endangered). The high species richness of native fish, endemism of some, high environmental heterogeneity, high risk of extinction and lack of knowledge of several other species along with the eminent human activities raise the need to enrich the scientific knowledge for future conservation efforts for the studied basin. Resumo: Nós compilamos dados sobre a diversidade da ictiofauna da bacia do rio Ivaí proveniente de recentes informações contidas em estudos divulgados na literatura especializada, coletas padronizadas e registros das espécies depositadas em coleções ictiológicas. Foram registradas 118 espécies de peixes pertencentes a oito ordens e 29 famílias. Dessas, 100 são autóctones, (84.8%), 13 são alóctones (11.0%) e cinco são exóticas (4.2%). As principais causas da ocorrência de espécies não nativas são escapes da piscicultura, introduções para pesca e a construção da usina hidrelétrica de Itaipu. Ocorre o predomínio de espécies de Characiformes e Siluriformes com porte pequeno e médio, sendo que 13 espécies são novas, o que representa aproximadamente 11.0% do total de espécies e 13.0% do total de espécies nativas. Ainda, aproximadamente 10.2% do total de espécies e 12.0% do total de espécies nativas correspondem a espécies endêmicas, isoladas pela presença de inúmeras cachoeiras em rios e riachos afluentes no trecho superior do rio Ivaí. A bacia do rio Ivaí está sujeita a uma variedade de interferências antrópicas como poluição, eutrofização, assoreamento, construção de represas, controle do regime de cheias, pesca, introduções de espécies e soltura de alevinos. Tais atividades apontam alarmantes preocupaçõe...

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Section: Introductionmentioning

confidence: 99%

Inventory of the fish fauna from Ivaí River basin, Paraná State, Brazil

et al. 2016

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“…After the collection, the individuals were quickly immersed in liquid nitrogen (-196°C) and stored in a cryogenic container. The specimens were properly transported and stored at low temperature (-20°C) to have the liver and muscle tissues enzymes extracted according to methodology adapted from Paiva, Zawadzki, Ruvolo-Takasusuki, Lapenta, and Renesto (2013). Liver and muscle tissue of all animals were removed and macerated in separate plastic 1.5 mL microtubes containing 100 µL of Tris/HCl 0.02 M pH 7.5.…”

Section: Methodsmentioning

confidence: 99%

Enzymatic distance in two species of the genus Pimelodella (Siluriformes, Heptateridae) from the Upper Paraná River basin, Paraná State, Brazil

Vianna,

Azevedo,

Moreira

et al. 2023

Acta Sci. Biol. Sci.

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Species of the genus Pimelodella (Eigenmann & Eigenmann, 1988) present many similar morphological characteristics, which makes taxonomic identification difficult. Some species present morphological distinction and reproduce normally, while others present reproductive isolation without morphological distinction. Taking that into consideration, we used starch-gel electrophoresis of enzymes to compare two species of the genus Pimelodella collected in Paraná, Ivaí and Pirapó rivers of the Upper Paraná River basin. We analyzed the liver and muscle tissue of 82 Pimelodella avanhandavae and 29 Pimelodella gracilis individuals, which revealed few genetic differences between species. In addition, we carried out an experimental design based on the separation of four populations: P. avanhandavae, Parana River (n = 37); P. avanhandavae, Ivaí River (n = 6); P. gracilis, Ivaí River (n = 29); P. avanhandavae, Pirapó River (n = 39). The high proportions of polymorphic loci as well as the expected heterozygosity suggest that both species have high genetic variability. Nei’s genetic identity values and Wright's fixation indices revealed a large genetic proximity between the samples collected in Ivaí and Pirapó rivers, regardless of the species analyzed. The presence of fixed alleles at one hundred percent for two loci showed that P. avanhandavae individuals collected in the Parana River are genetically distant from all remaining populations. Data indicated that P. avanhandavae, collected in this river, constitutes a distinguished species from those collected in Ivaí and Pirapó rivers. Therefore, we suggest, that more studies with molecular markers be carried out with the genus, as well as a review of the diagnostic morphological characteristics used to separate P. avanhandavae from P. gracilis.

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“…The rio Ivaí basin recently has become the subject of scientific studies related to fish populations, due to increasing efforts in the sampling of its ichthyofauna (Luiz et al 2003, Zawadzki et al 2004, Luiz et al 2005, Portela-Castro et al 2007, Graça and Pavanelli 2008, Maier et al 2008, Araújo et al 2011, Delariva and Silva 2013, Paiva et al 2013, Viana et al 2013, Roxo et al 2014, Tencatt et al 2014, Frota et al 2016, Zawadzki et al 2016a. The recognition of areas of endemism is essential for species preservation (Löwenberg-Neto and Carvalho 2004).…”

Section: Discussionmentioning

confidence: 99%

Identification key and pictures of the Hypostomus Lacépède, 1803 (Siluriformes, Loricariidae) from the rio Ivaí, upper rio Paraná basin

Dias¹,

Zawadzki²

2018

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The rio Ivaí flows through the left margin of the upper rio Paraná basin with 798 km of extension, being one of its largest tributaries. In this study, we analyzed 586 specimens of Hypostomus Lacépède, 1803 from the rio Ivaí basin deposited in the Coleção de Peixes do Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura da Universidade Estadual de Maringá (NUP) and Coleção Ictiológica do Grupo de Pesquisas em Limnologia e Recursos Pesqueiros (CIG). Herein, 14 species of Hypostomus were recorded from the rio Ivaí basin (10 already described and 4 possible new). The most representative species was H. ancistroides, corresponding to 23.5% of all the specimens, followed by Hypostomus sp. 3, with 15.2%, and Hypostomus sp. 2, with 13.8%. Considering Hypostomus, this study suggests that the rio Ivaí has high species richness compared with adjacent basins, such as rio Paranapanema, rio Tibagi, rio Piquiri and rio Iguaçu. Knowing the difficulties founded by many ichthyologists and researchers in identifying species within this genus, we also present here an identification key for its species present in the rio Ivaí basin.

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<b>Allozyme analysis of the four species of <i>Hypostomus</i> (Teleostei: Loricariidae) from the Ivaí river, upper Paraná river basin, Brazil</b> - doi: 10.4025/actascibiolsci.v35i4.16355

Cited by 5 publications

References 24 publications

Inventory of the fish fauna from Ivaí River basin, Paraná State, Brazil

Inventory of the fish fauna from Ivaí River basin, Paraná State, Brazil

Enzymatic distance in two species of the genus Pimelodella (Siluriformes, Heptateridae) from the Upper Paraná River basin, Paraná State, Brazil

Identification key and pictures of the Hypostomus Lacépède, 1803 (Siluriformes, Loricariidae) from the rio Ivaí, upper rio Paraná basin

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<b>Allozyme analysis of the four species of <i>Hypostomus</i> (Teleostei: Loricariidae) from the Ivaí river, upper Paraná river basin, Brazil</b> - doi: 10.4025/actascibiolsci.v35i4.16355

Cited by 5 publications

References 24 publications

Inventory of the fish fauna from Ivaí River basin, Paraná State, Brazil

Inventory of the fish fauna from Ivaí River basin, Paraná State, Brazil

Enzymatic distance in two species of the genus Pimelodella (Siluriformes, Heptateridae) from the Upper Paraná River basin, Paraná State, Brazil

Identification key and pictures of the Hypostomus Lac&eacute;p&egrave;de, 1803 (Siluriformes, Loricariidae) from the rio Iva&iacute;, upper rio Paran&aacute; basin

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Identification key and pictures of the Hypostomus Lacépède, 1803 (Siluriformes, Loricariidae) from the rio Ivaí, upper rio Paraná basin