title: Morphology, testes development and behaviour of unusual triploid males in microchromosome-carrying clones of Poecilia formosa.
abstract: In a microchromosome-carrying laboratory stock of the normally all-female Amazon molly Poecilia formosa triploid individuals were obtained, all of which spontaneously developed into males. A comparison of morphology of the external and internal insemination apparatus and the gonads, sperm ploidy and behaviour, to laboratory-bred F(1) hybrids revealed that the triploid P. formosa males, though producing mostly aneuploid sperm, are partly functional males that differ mainly in sperm maturation and sexual motivation from gonochoristic P. formosa males.
authors.affiliation: Lehrstuhl für Physiologische Chemie I, Theodor-Boveri-Institute, Biozentrum, Am Hubland, D-97074 Würzburg, Germany. dunja.lamatsch@oeaw.ac.at
authors.forename: D K
authors.initials: DK
authors.lastname: Lamatsch
authors.forename: M
authors.initials: M
authors.lastname: Stöck
authors.forename: R
authors.initials: R
authors.lastname: Fuchs
authors.forename: M
authors.initials: M
authors.lastname: Döbler
authors.forename: R
authors.initials: R
authors.lastname: Wacker
authors.forename: J
authors.initials: J
authors.lastname: Parzefall
authors.forename: I
authors.initials: I
authors.lastname: Schlupp
authors.forename: M
authors.initials: M
authors.lastname: Schartl
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D002875:Chromosomes / Q000235:genetics*; D019976:Cloning, Organism; D004247:DNA / Q000032:analysis; D005260:Female; D008297:Male; D011036:Poecilia / Q000033:anatomy & histology* / Q000235:genetics / Q000254:growth & development / Q000502:physiology*; D012727:Sex Characteristics; D012726:Sexual Behavior, Animal / Q000502:physiology; D013737:Testis / Q000737:chemistry / Q000166:cytology / Q000254:growth & development*; D057885:Triploidy
chemical_list: D004247:DNA