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Genetic control of size at maturity in Xiphophorus
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A New Look at Sex Determination in Poeciliid Fishes
The recent increased interest in sex-determining mechanisms can be traced directly to Wachtel’s concept that the H-Y antigen is the primary testis organizer. There have been several comprehensiveExpand
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Differences in adult male size and age at sexual maturity in the Río Coy (Mexico) population of Xiphophorus nigrensis (Pisces; Poeciliidae) are controlled by genetic variation at a Y‐linked locus.Expand
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The Platyfish, Xiphophorus maculatus
Fishes of the genus Xiphophorus (Poeciliidae, Atheriniformes) are found on the Atlantic slope of Mexico and adjacent parts of Central America.
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The genus Xiphophorus in Mexico and central america.
The genus Xiphophorus is found from northeastern Mexico (Coahuila) for about 2200 Km as far as Honduras. There are 26 species, of which 21 occupy headwaters on the eastern slope of the Sierra MadreExpand
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Genetics of Melanomas in Xiphophorus Fishes
Abstract Data are presented from studies on heritable melanoma formation in certain hybrids of Xiphophorus fishes. In the best investigated case, benign and malignant melanomas were caused primarilyExpand
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Estimation of nuclear DNA content by flow cytometry in fishes of the genus Xiphophorus.
1. By use of flow cytometry we measured nuclear DNA content in cells from 16 stocks representing 9 species of the genus Xiphophorus. 2. Significant differences were detected between certain stocksExpand
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Differences in transcription and promoters of Xmrk-1 and Xmrk-2 genes suggest a role for Xmrk-2 in pigment pattern development in the platyfish, Xiphophorus maculatus.
Pigment (macromelanophore) patterns in the platyfish Xiphophorus maculatus are due to a complex pigmentary locus; for example, the spotted-dorsal (Sd) fin pattern is due to the Sd locus. InExpand
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A Sex-Linked Gene Controlling the Onset of Sexual Maturity in Female and Male Platyfish (XIPHOPHORUS MACULATUS), Fecundity in Females and Adult Size in Males.
A sex-linked gene, P, controls the onset of sexual maturity in the platyfish, Xiphophorus maculatus. The activity of this gene is correlated with the age and size at which the gonadotropic zone ofExpand
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