ArticleChromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology2009
Z and W sex chromosomes in the cane toad (Bufo marinus).
Article in Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 37 citations in OpenAlex.
- Article
- A candidate sex determination locus in amphibians which evolved by structural variation between X- and Y-chromosomes.Nature communications · 2024Article
- Evolution and dosage compensation of nucleolar organizing regions (NORs) mediated by mobile elements in turtles with female (ZZ/ZW) but not with male (XX/XY) heterogamety.Journal of evolutionary biology · 2022Article
- Matamatas Chelus spp. (Testudines, Chelidae) have a remarkable evolutionary history of sex chromosomes with a long-term stable XY microchromosome system.Scientific reports · 2022Article
- Article
- Hybridization and introgression between toads with different sex chromosome systems.Evolution letters · 2020Article
- Landscape of snake' sex chromosomes evolution spanning 85 MYR reveals ancestry of sequences despite distinct evolutionary trajectories.Scientific reports · 2020Article
- Article
- Evolutionary simulations ofProceedings. Biological sciences · 2019Article
- Karyotypes and Sex Chromosomes in Two Australian Native Freshwater Fishes, Golden Perch (International journal of molecular sciences · 2019Article
- Article
- More sex chromosomes than autosomes in the Amazonian frog Leptodactylus pentadactylus.Chromosoma · 2018Article
- Early Stages of XY Sex Chromosomes Differentiation in the FishCurrent genomics · 2018Article
- Highly conserved Z and molecularly diverged W chromosomes in the fish genus Triportheus (Characiformes, Triportheidae).Heredity · 2017Article
- Towards the genetic control of invasive species.Biological invasions · 2017Article
- Unraveling the Sex Chromosome Heteromorphism of the Paradoxical Frog Pseudis tocantins.PloS one · 2016Article
- A ZZ/ZW microchromosome system in the spiny softshell turtle, Apalone spinifera, reveals an intriguing sex chromosome conservation in Trionychidae.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2013Article
- Are homologies in vertebrate sex determination due to shared ancestry or to limited options?Genome biology · 2010Review
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4 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
The cane toad (Bufo marinus) is one of the most notorious animal pests encountered in Australia. Members of the genus Bufo historically have been regarded as having genotypic sex determination with male homogamety/female heterogamety. Nevertheless, as with many toads, karyotypic analyses of the cane toad have so far failed to identify heteromorphics sex chromosomes. In this study, we used comparative genomic hybridization, reverse fluorescence staining, C-banding, and morphometric analyses of chromosomes to characterize sex chromosome dimorphism in B. marinus. We found that females consistently had a length dimorphism associated with a nucleolus organizer region (NOR) on one of the chromosome 7 pair. A strong signal over the longer NOR in females, and the absence of a signal in males indicated sex-specific DNA sequences. All females were heterozygous and all males homozygous, indicating a ZZ/ZW sex chromosomal system. Our study confirms the existence of sex chromosomes in this species. The ability to reliably identify genotypic sex of cane toads will be of value in monitoring and control efforts in Australia and abroad.
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