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RADSex: A computational workflow to study sex determination using restriction site-associated DNA sequencing data
(Wiley-Blackwell, 2021-03-09)
The study of sex determination and sex chromosome organization in nonmodel species has long been technically challenging, but new sequencing methodologies now enable precise and high-throughput identification of sex-specific ...
Sex ratio and morphological characteristics of Rufous Gnateaters, Conopophaga lineata (Aves, Passeriformes) in Atlantic forest fragments
(FUNDACAO ZOOBOTANICA RIO GRANDE SUL, MUSEU CIENCIAS NATURAIS, 2009)
Unequal sex ratios lead to the loss of genetic variability, decreasing the viability of populations in the long term. Anthropogenic activities often disturb the natural habitats and can cause alterations in sex ratio and ...
Understanding STI Risk and Condom Use Patterns by Partner Type Among Female Sex Workers in Peru
(Bentham Open, 2014)
While brothel-based sex work is regulated by the Peruvian government, there is little data on STI risk factors reported by female sex workers (FSW). This study compared high risk behaviors among 120 Peruvian FSW from ...
Sex identification of the extant mega mammal, the lowland tapir, Tapirus terrestris (Tapiridae, Mammalia), by means of molecular markers: new outlook for non-invasive samples
(2017-03-01)
The knowledge of the sex ratio of threatened populations or species is pivotal since sub-optimal sex ratios can affect negatively the population growth and resilience. The vulnerable species, Tapirus terrestris, is rarely ...
Determination of equine fetal sex by Doppler ultrasonography of the gonads
(Wiley-Blackwell, 2014-11-01)
Reasons for performing the studyThe identification of fetal sex in horses by location of the genital tubercle between 55 and 70 days of pregnancy is hampered by the large amount of allantoic fluid, extensive fetal movements ...
Chromosome painting of Z and W sex chromosomes in Characidium (Characiformes, Crenuchidae)
(2013-01-24)
Some species of the genus Characidium have heteromorphic ZZ/ZW sex chromosomes with a totally heterochromatic W chromosome. Methods for chromosome microdissection associated with chromosome painting have become important ...
Chromosome mapping of repetitive sequences in Anostomidae species: Implications for genomic and sex chromosome evolution
(2012-12-01)
Background: Members of the Anostomidae family provide an interesting model system for the study of the influence of repetitive elements on genome composition, mainly because they possess numerous heterochromatic segments ...
Sex determination of murine and bovine embryos using cytotoxicity and immunofluorescence assays
(1993-06-01)
Murine and bovine embryos were sexed by using polyclonal and monoclonal anti-H-Y antibodies in cytotoxic and immunofluorescence assays. The specificity of 3 different sources of antibodies are compared. Sexing was accomplished ...
Genotypic sex determination in teleosts: Insights from the testis-determining amhy gene
(Academic Press Inc Elsevier Science, 2013-10-01)
The master sex-determining genes identified so far in fishes are clearly not conserved, as evidenced by several unrelated genes reported to play critical roles in sex determination. In this study, we reviewed the molecular ...
The first case of induced gynogenesis in Neotropical fishes using the yellowtail tetra (Astyanax altiparanae) as a model organism
(Elsevier B.V., 2020-01-01)
Gynogenesis is a chromosome manipulation technique applicable on the production of all-female populations, generation of inbred or clonal lines and identification of genetic sex determination mechanisms in fish. Therefore, ...