Indian Society of Genetics & Plant Breeding

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PATTERNS OF ALLOZYMIC VARIATION IN INDIAN NATURAL POPULATIONS OF TWO COLONISING DROSOPHILIDS

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Isofemale lines derived from yearly population samples of Drosophila immigrans from
Hasimau (W.B.) andZaprionus indianus from Dehradun (U.P.) were analysed for allozymic
variability patterns through standard starch gel electrophoresis as well as postelectrophoretic heat denaturation techniques. Five polymorphic loci revealed marked
constancy in temporal allelic frequency patterns in both the colonising drosophilids. The
thermostability isoelectrophoretic variation at the Acph and Est-2loci in D. immigrans and
at Est-I and Adh loci in Z. indianus was also found to be characteristically uniform and
persistent. Such patterns of allozymic homogeneity could possibly result from natural
selection mechanisms
 

Keywords: Temporal allozymic variation, gel electrophoresis, colonising drosophilids, cryptic variation.

Info

Year: 1995
Volume: 55
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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