Intrapopulational variation in color pattern of Trichomycterus davisi (Haseman, 1911) (Siluriformes: Trichomycteridae) corroborated by morphometrics and molecular analysis

Nascimento, Raul Henrique Cardoso; Frantine‐Silva, Wilson; Souza-Shibatta, Lenice; Sofia, Silvia Helena; Ferrer, Juliano; Shibatta, Oscar Akio

doi:10.11646/zootaxa.4290.3.5

Cited by 14 publications

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“…It is worth noting that these species have very similar morphology and that color patterns of the body are commonly used to distinguish and identify species. However, Nascimento et al (2017) verified ontogenetic variation of color pattern in T. davisi. Thereby, variation in color pattern within a population can cause doubt concerning species identification.…”

Section: Discussionmentioning

confidence: 88%

Fish fauna in forested and rural streams from an ecoregion of high endemism, lower Iguaçu River basin, Brazil

et al. 2018

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The fish fauna of eight streams with different land uses of their watersheds (forested and rural areas) in the lower Iguaçu River basin was inventoried, in order to evaluate the composition and species richness. The fishes were sampled quarterly from May 2015 to February 2016, using the electrofishing technique. In total, 4,239 individuals were captured, belonging to six orders, 11 families and 26 species. The orders Siluriformes and Characiformes, and the families Characidae and Trichomycteridae were the most specious. Of the total species sampled, 65% were endemic to the Iguaçu River basin, four are not described and four are non-native. As expected to the Iguaçu River basin, the inventoried fauna revealed low richness and high endemism, however was highly nested within the species composition reported for main channel of Iguaçu River and their larger tributaries. The species recorded here corresponded to a subset of 24.5% of the 106 species documented for the basin. The streams presented different faunas, with only two species (Astyanax bifasciatus and Trichomycterus stawiarski) common to both forested and rural streams. In addition, higher species richness was recorded in streams inserted in conservation units. The presence of non-native species was more frequent in rural streams. These results highlight the importance of the preservation of forested areas in the watersheds of lower Iguaçu, which presents a peculiar fish fauna, along with several threats to biodiversity such as habitat loss by intensive agriculture use.

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Section: Discussionmentioning

confidence: 88%

Fish fauna in forested and rural streams from an ecoregion of high endemism, lower Iguaçu River basin, Brazil

et al. 2018

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“…Morphometric data were taken point to point with digital callipers (precision of 0.1 mm) on the left side of specimens following Nascimento et al . (). For osteological analysis, two specimens were cleared and stained (c&s) prepared according to Taylor and van Dyke ().…”

Section: Methodsmentioning

confidence: 97%

“…The specimens used for the morphological measurements are paratypes and holotype and the specimens in alcohol are non‐types. Furthermore, sequences of other Cambeva species obtained from the Upper Rio Paraná and Laguna dos Patos systems, Rio Iguaçu, Rio São Francisco, Rio Uruguay and Atlantic coastal basins were added to the analysis to investigate the possible relationship between C. cubataonis (Katz et al ., ), C. davisi (Nascimento et al ., ; Ochoa et al ., ), C. diabola (Pereira et al ., ), C. iheringi (Ochoa et al ., ; Pereira et al ., ), C. pascuali (Ochoa et al ., ), Cambeva diatropoporos (Ferrer & Malabarba 2013), Cambeva perkos (Datovo, Carvalho & Ferrer 2012), C. poikilos , C. variegata (Ochoa et al ., ) and the new species. All sequences used in this study and haplotypes are described in Table S1 in Appendix S1.…”

Section: Methodsmentioning

confidence: 98%

“…() for Cambeva ytororo (Téran, Ferrer, Benitez, Alonso, Aguilera & Mirande 2017), in addition to specific literature for colour variation and redescription of Cambeva spp. such as Cambeva cubataonis (Bizerril 1994) (Katz & Barbosa, ), Cambeva davisi (Nascimento et al ., ); Cambeva iheringi (Eigenmann 1917) (da Silva et al ., ; Wosiacki, ) and Cambeva zonata (Eigenmann 1918) (Reis & de Pinna, ).…”

Section: Methodsmentioning

confidence: 99%

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A new species of Cambeva (Siluriformes, Trichomycteridae) from the Rio Ivaí basin, Upper Rio Paraná basin, Paraná State, Brazil

Reis

Frota

Fabrin

et al. 2019

Journal of Fish Biology

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A new species of Cambeva endemic to the Rio Ivaí basin, Upper Paraná basin, is described combining morphological and molecular data. This new species is distinguished from all congeners by characters related to the number of pectoral-fin rays, to the colour pattern of the dorsal and lateral surface of the body, to the presence of diffuse blotches in the ventral surface of body, to the presence of a pelvic-fin and pelvic girdle, to the number of odontodes in the inter-opercular and opercular patches, to the number of dorsal and ventral procurrent rays. In addition, the analysis of mitochondrial DNA sequences identified a satisfactory genetic distance between this new species and its congeners. The new species from the Rio Ivaí reinforces its characteristics as an area of endemism for fishes in the Upper Rio Paraná basin.

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“…All species examined and incorporated in the molecular analysis (voucher specimens) were identified or validated by comparing with type specimens, original descriptions (i.e., Ardila Rodríguez, 2016, 2018; Barbosa & Costa, 2010;Fernandez & Chuquihuamaní, 2007;Fernández & Miranda, 2007;Fernández & Vari, 2009;García-Melo et al, 2016;Lezama et al, 2012) and other works with informative data (i.e., Bizerril, 1994;Datovo et al, 2012;Donin, 2019;Eigenmann, 1918;Ferrer & Malabarba, 2011Nascimento et al, 2017;Terán et al, 2017;Wosiacki, 2005;Wosiacki & Garavello, 2004;Wosiacki & Oyakawa, 2005), except for the genetic sequences available in GenBank obtained by Nascimento et al (2017)***, Ochoa et al (2017aOchoa et al ( , 2017b)* and Pereira et al (2011)**. In these cases, the taxonomic identifications provided by the respective author(s) were adopted and their authorship along the text and in the phylogenetic tree was annotated using asterisks (see earlier).…”

Section: Samples and Comparative Materialsmentioning

confidence: 99%

Taxonomical study of Trichomycterus (Siluriformes: Trichomycteridae) from the Ribeira de Iguape River basin reveals a new species recorded in the early 20th century

Donin

Ferrer

Carvalho

2020

Journal of Fish Biology

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A new species of Trichomycterus endemic to the Ribeira de Iguape River basin, southeastern Brazil, was studied based on morphological and molecular evidence. This species had an outer layer of coloration composed of scattered, round, black or dark‐brown spots smaller or equivalent in size to the circumference of the eye; eight pectoral‐fin rays; 28–29 opercular odontodes; 54–56 interopercular odontodes; and supraorbital line of the laterosensory system not interrupted, with pores s2 absent. Two other species of Trichomycterus from the Ribeira de Iguape River basin are recorded, and their taxonomic status is discussed: Trichomycterus alternatus and Trichomycterus jacupiranga were not differentiated using molecular analysis but may be consistently distinguished based on morphology. The phylogenetic relationships of the co‐occurring species, T. alternatus and Cambeva zonata, were inferred using mitochondrial data, reinforcing the taxonomic status of these recently revised species that have a complex taxonomy. In addition, a new combination for Trichomycterus taroba with its inclusion in the genus Cambeva is recommended.

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Intrapopulational variation in color pattern of Trichomycterus davisi (Haseman, 1911) (Siluriformes: Trichomycteridae) corroborated by morphometrics and molecular analysis

Cited by 14 publications

References 0 publications

Fish fauna in forested and rural streams from an ecoregion of high endemism, lower Iguaçu River basin, Brazil

Fish fauna in forested and rural streams from an ecoregion of high endemism, lower Iguaçu River basin, Brazil

A new species of Cambeva (Siluriformes, Trichomycteridae) from the Rio Ivaí basin, Upper Rio Paraná basin, Paraná State, Brazil

Taxonomical study of Trichomycterus (Siluriformes: Trichomycteridae) from the Ribeira de Iguape River basin reveals a new species recorded in the early 20th century

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