2018
DOI: 10.1590/1982-0224-20180029
|View full text |Cite
|
Sign up to set email alerts
|

Abstract: Farlowella is one of the most diverse genera of the Loricariinae, restricted to South America rivers. The taxonomic and phylogenetic relationships among its species are contentious and, while genetic studies would contribute to the understanding of their relationships, the only available datum refer to the karyotype description of only one species. In the present study two Amazonian species, Farlowella cf. amazonum and F. schreitmuelleri, were analyzed using conventional and molecular cytogenetic procedures. B… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

4
11
0

Year Published

2020
2020
2022
2022

Publication Types

Select...
6

Relationship

2
4

Authors

Journals

citations
Cited by 10 publications
(15 citation statements)
references
References 48 publications
4
11
0
Order By: Relevance
“…A putative ancestral karyotype, probably with 2n = 58 chromosomes, is attributed to the Harttia lineage, and this same 2n number occurs in its sister group Farlowella [ 52 ] and in basal species from Harttia phylogenetic relationships [ 7 , 8 ]. However, Harttia presents different pathways in relation to the 2n diversification, some species keeping 58 chromosomes, some others increasing this chromosome number by centric fissions (i.e., H. absaberi and Harttia sp.…”
Section: Discussionmentioning
confidence: 99%
“…A putative ancestral karyotype, probably with 2n = 58 chromosomes, is attributed to the Harttia lineage, and this same 2n number occurs in its sister group Farlowella [ 52 ] and in basal species from Harttia phylogenetic relationships [ 7 , 8 ]. However, Harttia presents different pathways in relation to the 2n diversification, some species keeping 58 chromosomes, some others increasing this chromosome number by centric fissions (i.e., H. absaberi and Harttia sp.…”
Section: Discussionmentioning
confidence: 99%
“…66,67 Despite the high variability in the diploid number, karyotypic formulas, and distribution of rDNA sites in Loricariinae, the heterochromatin distribution pattern has low variability and is characterized by few heterochromatin blocks, located mainly in pericentromeric regions and interspaced with rDNA sites. Recent studies have identified different types of repetitive DNAs in these heterochromatic regions, such as TC1 mariner, 36 TE hAT, 41 heterochromatic ITS, 27 and Rex1…”
Section: Loricariina Subtribe: Rineloricaria Groupmentioning
confidence: 99%
“…However, the available cytogenetic data allowed the easily discrimination of Farlowella amazona and Farlowella schuertmulleriae, both share 2n = 58 chromosomes, but they exhibited several microstructural divergences (e.g., karyotypic formulas, heterochromatin pattern, NORs and 5S rDNA). 26,27 Already in Sturisoma, only conventional analysis was enough to separate two allopatric species: S. barbatum from Middle Paraguay river basin, which had 2n = 66, and S. nigrirostrum from Araguaia river basin, which shows 2n = 74, the highest chromosome number in Loricariinae (Table 1). In the Loricariichthys group, chromosomal markers have also been crucial to validate the taxonomic status of species with low morphological variation.…”
Section: Cytotaxonomic Features Of the Major Clades Belonging To Lorimentioning
confidence: 99%
“…amazonum and F. schreitmuelleri, which have showed a diploid number of 58 chromosomes, but with minor karyotype differences between three species analyzed. [8][9][10] In Loricariinae, physical mapping of 18S rDNA were detected in three chromosomes for Rineloricaria lanceolata, 11 in two chromosomes for Harttia loricariformis 12 and individual females of Harttia punctata, 13 in one chromosome of individual males H. punctata. 13 Physical mapping of 5S rDNA in this subfamily were detected in H. punctata, located in two chromosomes for males or females.…”
Section: Introductionmentioning
confidence: 99%
“…amazonum and multiple 5S rDNA sites in F. schreitmuelleri. 10 In this article, we aimed to expand on the cytogenetic and molecular data available for F. hahni, contributing to the first record of mapping of ribosomal DNA (5S and 18S rDNA) and cytochrome b (Cyt b) analyses in this species, including in the analyses, individuals of region native (lower Paraná basin) and individuals from non-native region (upper Paraná basin) of this species.…”
Section: Introductionmentioning
confidence: 99%