The genus Drosophila (Diptera) in Eastern Queensland: IV. The hybridization relationships of four species of the Pholadoris subgenus

Mather W.B. (1955) The genus Drosophila (Diptera) in Eastern Queensland: IV. The hybridization relationships of four species of the Pholadoris subgenus. Australian Journal of Zoology, 4 1: 90-97. doi:10.1071/ZO9560090


Author Mather W.B.
Title The genus Drosophila (Diptera) in Eastern Queensland: IV. The hybridization relationships of four species of the Pholadoris subgenus
Journal name Australian Journal of Zoology   Check publisher's open access policy
ISSN 1446-5698
Publication date 1955
Sub-type Article (original research)
DOI 10.1071/ZO9560090
Volume 4
Issue 1
Start page 90
End page 97
Total pages 8
Subject 1103 Clinical Sciences
1105 Dentistry
Abstract Hybridization tests have shown that four Australian morpnospecies of the subgenus Pholadoris, genus Drosophila (D. novopaca Mather, D. cancellata Mather, D. lativittata Mall., and D. enigma Mall.), are biospecies, but that the following combinations yield adult offspring: D. novopaca × D. lativittata both ways, D. novopaca × D. cancellata both ways, ♀ D. novopaca × ♂ D. enigma, and ♂ D. cancellatu × ♀ D. lativittata, and that “gene exchange” is possible between D. cancellata and D. novopaca under laboratory conditions. Sexual isolation, hybrid inviability, and hybrid sterility all play a part in keeping the species distinct from one another. The results of the hybridization tests support the hypothesis that the species should be placed in one species group (coracina) as was previously done on morphological criteria. Of the three main morphological characters used for separating these species, viz. thoracic, abdominal, and wing markings, those of D. novopaca are dominant to those of D. cancellata. These character differences between at least D. novopaca and D. cancellata seem to be controlled by one sex-linked gene.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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