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Geographical variation in circadian eclosion rhythm and photoperiodic adult diapause inDrosophila littoralis
- P. Lankinen
- Journal of Comparative Physiology A
SummaryThe time measuring system ofDrosophila littoralis strains originating between 40–70° N was found to be highly variable and latitude dependent. The critical daylength for photoperiodic adult… Expand
Genetic polymorphism and evolution in parthenogenetic animals. II. Diploid and polyploid Solenobia triquetrella (Lepidoptera: Psychidae).
Genic polymorphism at sixteen enzyme loci of four different chromosomal races of Solenobia triquetrella (bisexual, two diploid parthenogenetic races and tetraploid parthenogentiic) has been studied… Expand
Genetic polymorphism and evolution in parthenogenetic animals. VI. Diploid and triploid Polydrosus mollis (Coleoptera: Curculionidae).
Genetic polymorphism and evolution in parthenogenetic animals. IV. Triploid Otiorrhynchus salicis Ström (Coleoptera: Curculionidae)
The genetic variability at 20 enzyme loci in natural populations of Otiorrhynchus salicis Strom was studied by starch gel electrophoresis. Altogether 135 weevils were analyzed. The samples originated… Expand
Independence of Genetic Geographical Variation between Photoperiodic Diapause, Circadian Eclosion Rhythm, and Thr-Gly Repeat Region of the Period Gene in Drosophila littoralis
Drosophila littoralis is a latitudinally widespread European species of the Drosophila virilis group. The species has ample genetic variation in photoperiodism (adult diapause) and circadian… Expand
Weak circadian eclosion rhythmicity in Chymomyza costata (Diptera: Drosophilidae), and its independence of diapause type
Abstract Pupal eclosion rhythms were studied in seven strains of C. costata originating between latitudes 43°N in Japan to 69°N in Finland. The strains represented the following types of diapause:… Expand
North–south differences in circadian eclosion rhythm in European populations of Drosophila subobscura
- P. Lankinen
- 1 August 1993
The circadian pupal eclosion rhythm was studied in 12 strains of Drosophila subobscura originating from two regions: Scandinavia (56–63°N), and the Canary Islands (28°N). In most parameters of the… Expand
Characterization of linne, a new autosomal eclosion rhythm mutant in Drosophila subobscura.
- P. Lankinen
- Behavior genetics
A new putative gene, named linne, affecting circadian eclosion rhythm was found in a Norwegian strain of Drosophila subobscura. The phenotype of linne may be novel among Drosophila clock mutants.… Expand
Genetic differentiation in Coregonus albula (L.) (Salmonidae) populations in Finland
Enzyme gene variability has been studied by starch gel electrophoresis in 20 Finnish vendace (Coregonus albula) populations. Eighteen populations originate from fresh water and two from brackish… Expand
Genic variation in central and marginal populations of Drosophila subobscura.
The genic variability at twenty loci in marginal, submarginal and central populations of Drosophila subobscura has been studied by starch gel electrophoresis. The samples from marginal populations… Expand