Genomic introgression in laboratory evolved hybrid races, Cytorace 1 and Fissioncytorace-1 of Nasuta-albomicans complex (NAC) of Drosophila (Insecta, Diptera) as revealed by RAPD and ISSR markers

Nasuta-albomicans complex (NAC) of Drosophila is an artificial hybrid zone comprising of Drosophila nasuta nasuta, Drosophila nasuta albomicans and 16 Cytoraces, which are the evolutionary products of a long range hybridization experiment conducted in the laboratory environment. Occurrence of centri...

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Bibliographic Details
Published in:European zoological journal 2012-12, Vol.79 (4), p.520-529
Main Authors: Thongatabam, B, Ramachandra, N. B
Format: Article
Language:English
Subjects:
chromosomes
DNA
Drosophila
evolution
Fissioncytorace-1
genetic polymorphism
Genetics
genome
hybridization
hybrids
Insects
introgression
ISSR
microsatellite repeats
Nasuta-albomicans complex
races
random amplified polymorphic DNA technique
RAPD
zoology
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Summary:Nasuta-albomicans complex (NAC) of Drosophila is an artificial hybrid zone comprising of Drosophila nasuta nasuta, Drosophila nasuta albomicans and 16 Cytoraces, which are the evolutionary products of a long range hybridization experiment conducted in the laboratory environment. Occurrence of centric fission in the X3 chromosome of Cytorace 1 led to the derivation of Fissioncytorace-1. Molecular techniques have emerged as powerful and valuable tools for detection and exploitation of genetic polymorphism. In the present study, Cytorace 1 and Fissioncytorace-1 were subjected to Random Amplified Polymorphic DNA (RAPD) and Inter Simple Sequence Repeats (ISSR) analyses to determine the introgression of D. n. nasuta and D. n. albomicans genomes. It was found that Cytorace 1 and Fissioncytorace-1 exhibit similarities in RAPD and ISSR profiles although different combinations of genomic regions could have favoured Fissioncytorace-1, for better morphophenotypes and fitness, when compared to Cytorace 1, which has existed for over 15 years from the time of its evolution in the laboratory environment.
ISSN:1748-5851
1125-0003
2475-0255
1748-5851
2475-0263
DOI:10.1080/11250003.2012.696151