ArticleChromosoma2018
More sex chromosomes than autosomes in the Amazonian frog Leptodactylus pentadactylus.
Article in Chromosoma, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
21 citing papers in PubMed, 41 citations in OpenAlex.
- Genome-Wide Characterization of Sex-Linked Regions in the Sangzhi Horned Toad (Boulenophrys sangzhiensis) Reveals Complex Sex Determination Mechanisms.Molecular ecology resources · 2026Article
- Investigating the evolution of large meiotic rings of multiple X and Y sex chromosomes in two Leptodactylus frog species (Anura, Leptodactylidae).Communications biology · 2025Article
- Understanding the genetic sex-determining mechanism in Hyla eximia treefrog inferred from H-Y antigen.PloS one · 2024Article
- Comparative molecular and conventional cytogenetic analyses of three species of Rhinella (Anura; Bufonidae).PloS one · 2024Article
- Analysis inFrontiers in genetics · 2023Article
- Highly rapid and diverse sex chromosome evolution in the Odorrana frog species complex.Development, growth & differentiation · 2022Article
- Representing sex chromosomes in genome assemblies.Cell genomics · 2022Article
- Novel genetic sex markers reveal unexpected lack of, and similar susceptibility to, sex reversal in free-living common toads in both natural and anthropogenic habitats.Molecular ecology · 2022Article
- First karyotype description of the species ofComparative cytogenetics · 2022Article
- A brief review of vertebrate sex evolution with a pledge for integrative research: towards 'Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021Review
- Review
- Review
- Review
- Article
- Meiotic analyses show adaptations to maintenance of fertility in X1Y1X2Y2X3Y3X4Y4X5Y5 system of amazon frog Leptodactylus pentadactylus (Laurenti, 1768).Scientific reports · 2020Article
- Landscape of snake' sex chromosomes evolution spanning 85 MYR reveals ancestry of sequences despite distinct evolutionary trajectories.Scientific reports · 2020Article
- Patterns of Sex Chromosome Differentiation in Spiders: Insights from Comparative Genomic Hybridisation.Genes · 2020Article
- DNA transposon invasion and microsatellite accumulation guide W chromosome differentiation in a Neotropical fish genome.Chromosoma · 2019Article
- Satellite DNA Mapping inGenes · 2019Article
- A new frog of thePeerJ · 2019Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Heteromorphic sex chromosomes are common in eukaryotes and largely ubiquitous in birds and mammals. The largest number of multiple sex chromosomes in vertebrates known today is found in the monotreme platypus (Ornithorhynchus anatinus, 2n = 52) which exhibits precisely 10 sex chromosomes. Interestingly, fish, amphibians, and reptiles have sex determination mechanisms that do or do not involve morphologically differentiated sex chromosomes. Relatively few amphibian species carry heteromorphic sex chromosomes, and when present, they are frequently represented by only one pair, either XX:XY or ZZ:ZW types. Here, in contrast, with several evidences, from classical and molecular cytogenetic analyses, we found 12 sex chromosomes in a Brazilian population of the smoky jungle frog, designated as Leptodactylus pentadactylus Laurenti, 1768 (Leptodactylinae), which has a karyotype with 2n = 22 chromosomes. Males exhibited an astonishing stable ring-shaped meiotic chain composed of six X and six Y chromosomes. The number of sex chromosomes is larger than the number of autosomes found, and these data represent the largest number of multiple sex chromosomes ever found among vertebrate species. Additionally, sequence and karyotype variation data suggest that this species may represent a complex of species, in which the chromosomal rearrangements may possibly have played an important role in the evolution process.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.