TRIPLOIDY IN NATURAL POPULATIONS OF THE BLACK FLY CNEPHIA MUTATA (MALLOCH)
- 1 August 1959
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Zoology
- Vol. 37 (4), 571-589
- https://doi.org/10.1139/z59-060
Abstract
Populations of Cnephia mutata in southern Ontario contain both diploid and triploid individuals. The diploid form is bisexual and lacks chromosomal polymorphism except for a rearrangement involved in its cytological sex determining mechanism. The triploids are parthenogenetic; they produce female progeny only and are highly heterozygous for inversions. The banding pattern of the salivary gland chromosomes of diploids and triploids is very similar; the identical standard sequence occurs in both. The complete lack of autosomal inversions in diploids contrasted with their abundance in triploids indicates that effective genetic exchange does not occur between the two forms; they are reproductively completely isolated, although opportunity for cross-mating would seem to exist. The origin of polyploid parthenogenetic forms in black flies is discussed and the view is favored that they are autopolyploid and automictic.Keywords
This publication has 9 references indexed in Scilit:
- THE SALIVARY GLAND CHROMOSOMES OF SEVEN SEGREGATES OF PROSIMULIUM (DIPTERA: SIMULIIDAE) WITH A TRANSFORMED CENTROMERECanadian Journal of Zoology, 1959
- THE SALIVARY GLAND CHROMOSOMES OF SEVEN FORMS OF BLACK FLIES INCLUDED IN EUSIMULIUM AUREUM FRIESCanadian Journal of Zoology, 1959
- BLACK FLIES: SIBLINGS, SEX, AND SPECIES GROUPINGJournal of Heredity, 1956
- Biology of Alaskan Black Flies (Simuliidae, Diptera)Ecological Monographs, 1955
- THE SALIVARY GLAND CHROMOSOMES OF THE BLACK FLY SIMULIUM VITTATUM ZETT.Canadian Journal of Zoology, 1953
- A Quick-Freeze Method for Making Smear Slides PermanentStain Technology, 1953
- Biology and Control of Labrador Black Flies (Diptera:Simuliidae)Bulletin of Entomological Research, 1952
- La cytologie de la parthénogenèse chez solenobia sp. (lichenella L. ?) (lépidoptères, psychides)Chromosoma, 1950
- Oogenesis in a thelytokous wasp, Nemeritis canescens (Grav.)Journal of Morphology, 1937