THE ULTRASTRUCTURE OF DIMORPHIC SPERMATOZOA IN THE HYMENOPTERON DAHLBOMIMS FUSCIPE1SNIS (ZETT.) (EULOPHIDAE)
- 1 December 1965
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Genetics and Cytology
- Vol. 7 (4), 609-619
- https://doi.org/10.1139/g65-081
Abstract
The fine structure of spermatozoa of the arrhenotokous wasp, Dahlbominus fuscipennis (Zett.) was examined by light and electron microscopy with particular reference to a unique dimorphism in the spiralization of the head. Evidence is presented to show that although generally of the "classical" flagellate type, mature spermatozoa are of 2 kinds, 1 with heads that are dextrally coiled and the other with heads that are sinistrally coiled. Both kinds are found in the seminal vesicles of all males and in the spermathecae of all females. The 2 mitochondrial filaments of the tail piece are spirally coiled around the axial filament complex but only in the dextral direction. Sinistral sperm, with opposite gyres in the head and tail piece are thought to be unable to penetrate the egg membranes and thus to be responsible for haploid male production by mated females of this species.This publication has 12 references indexed in Scilit:
- Sperm Transfer and Utilization by the Arrhenotokous WaspDahlbominus fuscipennis(Zett.) (Hymenoptera: Eulophidae)The Canadian Entomologist, 1965
- Inherited Male-Producing Factor in an Insect That Produces Its Males from Unfertilized EggsScience, 1964
- Environmental Causes of Variation in the Sex Ratio of an Arrhenotokous Insect,Dahlbominus fuliginosus(Nees) (Hymenoptera: Eulophidae)The Canadian Entomologist, 1963
- Sperms, sperm bundles and fertilization in a mealy bug,Pseudococcus obscurus Essig. (Homoptera:Coccoidea)Journal of Morphology, 1962
- IMPROVEMENTS IN EPOXY RESIN EMBEDDING METHODSThe Journal of cell biology, 1961
- EVOLUTIONARY ASPECTS OF ABERRANT MEIOSIS IN SOME PENTATOMINAE (HETEROPTERA)Evolution, 1960
- THE SPERMATOZOA OF THE HONEY‐BEEEcological Entomology, 1955
- A STUDY OF FIXATION FOR ELECTRON MICROSCOPYThe Journal of Experimental Medicine, 1952
- The effects of selective breeding on the laboratory propagation of insect parasitesProceedings of the Royal Society of London. B. Biological Sciences, 1947
- The Biology of Microplectron fuscipennis, Zett. (Chalcid.), a Parasite of the Pine Sawfly (Diprion sertifer, Geoff.)Bulletin of Entomological Research, 1935