79 research outputs found
Mating propensities and variations in enzyme activities in long-term cage populations of Drosophila melanogaster.
uploaded by Plazi from Taxodro
Temperature adaptation of Drosophila populations. The heat shock proteins system.
uploaded by Plazi from Taxodro
Adaptation of Drosophila enzymes to temperature—V. Heat shock effect on the malate dehydrogenase of Drosophila melanogaster
Adaptation of Drosophila enzymes to temperature—II. Supernatant and mitochondrial malate dehydrogenase
Adaptation of Drosophila to temperature: Heat-shock proteins and survival in Drosophila melanogaster
Enzyme polymorphisms in two D. melanogaster populations of Southern Greece.
uploaded by Plazi from Taxodro
DROSOPHILA MELANOGASTER
A STUDY OF THE SELECTIONAL EFFECT OF THREE ECOLIGICAL FACTORS UPON THE GENETIC POLYMORPHISM OF THREE ENZYME LOCI IN BOTH, NATURAL AND CAGE POPULATIONS OF DROSOPHILA MELANOGASTER. THE FINDINGS OF THE PRESENT INVESTIGATION MAY BE SUMMARIZED AS FOLLOWS: 1. AN ATTEMPT WAS MADE TO APROACH THE PROBLEM OF MAINTENANCEOF THE ENZYME POLYMORPHISMS IN MENDELIAN POPULATIONS BY THE COMBINED STUDY OF THE ALLOZYME FREQUENCIES OF THE A - GLYCEROPHOSPHATE DEHYDROGENASE (Α - GPDH), ALCOHOL DEHYDROGENASE (ADH) AND MALATE DEHYDROGENASE (MDH - 1) LOCI, BOTH IN NATURAL AND ARTIFICIAL CAGE POPULATIONS. 2. A SMALL GEOGRAPHICAL AND TEMPORAL GENETIC DIFFERENTIATION WAS DETECTED IN THE NATURAL POPULATIONS OF THE ISLAND OF CEPHALONIA AS WELL IN THAT OF A LOCATION CALLED GAVROS (ACHAIA - PELOPONNESUS). 3. THE FREQUENCY OF A NEW RARE MOLECULAR FORM OF THE MDH - 1 WAS ESTIMATED IN THE NATURAL POPULATIONS OF DROSOPHILA MELANOGASTER. 4. THE SELECTIONAL EFFECT OF THREE ECOLOGICAL FACTORS UPON THE GENE POOL, NAMELY "FOOD MEDIUM", "HUMIDITY" AND "TEMPERATURE" WAS INVESTIGATED IN THIRTEEN (13) CAGE POPULATIONS BY ESTIMATED THE ALLOZYME FREQUENCIES OF THE A - GPDH AND ADH LOCI. 5. THE DIFFERENTIATION PATTERN OF THE ALLOZYME FREQUENCIES WAS FOUND TO DEPEND UPON THE ACTION OF THE ECOLOGICAL FACTORS STUDIED, ESPECIALLY ON THAT OF THE FOODMEDIUM (ABSTRACT TRUNCATED)ΚΑΤΑ ΤΗΝ ΠΑΡΟΥΣΑΝ ΕΡΕΥΝΑΝ: 1) ΕΠΕΧΕΙΡΗΘΗ ΠΡΟΣΕΓΓΙΣΙΣ ΤΟΥ ΠΡΟΒΛΗΜΑΤΟΣ ΤΗΣ ΣΥΓΚΡΑΤΗΣΕΩΣ ΤΩΝ ΕΝΖΥΜΙΚΩΝ ΠΟΛΥΜΟΡΦΙΣΜΩΝ ΕΝΤΟΣ ΤΩΝ ΜΕΝΔΕΛΙΚΩΝ ΠΛΗΘΥΣΜΩΝ ΔΙΑ ΣΥΝΔΕΔΥΑΣΜΕΝΗΣ ΜΕΛΕΤΗΣ ΤΩΝ ΑΛΛΟΕΝΖΥΜΙΚΩΝ ΣΥΧΝΟΤΗΤΩΝ ΤΩΝ ΤΟΠΩΝ Α - ΓΛΥΚΕΡΙΝΟΦΩΣΦΟΡΙΚΗΣ ΑΦΥΔΡΟΓΟΝΑΣΗΣ (Α - GPDH), ΑΛΚΟΟΛΙΚΗΣ ΑΦΥΔΡΟΓΟΝΑΣΗΣ (ADH) ΚΑΙ ΜΗΛΙΚΗΣ ΑΦΥΔΡΟΓΟΝΑΣΗΣ (MDH - 1) ΕΙΣ ΦΥΣΙΚΟΥΣ ΚΑΙ ΤΕΧΝΗΤΟΥΣ ΠΛΗΘΥΣΜΟΥΣ ΤΗΣ DROSOPHILA MELANOGASTER. 2) ΑΝΙΧΝΕΥΘΗ ΜΙΚΡΑ ΓΕΩΓΡΑΦΙΚΗ ΚΑΙ ΔΙΑΧΡΟΝΙΚΗ ΓΕΝΕΤΙΚΗ ΔΙΑΦΟΡΟΠΟΙΗΣΙΣ ΕΙΣ ΤΟΥΣ ΦΥΣΙΚΟΥΣ ΠΛΗΘΥΣΜΟΥΣ ΚΕΦΑΛΛΗΝΙΑΣ ΚΑΙ ΓΑΒΡΟΥ (Κ. ΚΑΣΤΡΙΤΣΙ) ΑΧΑΙΑΣ. 3) ΥΠΕΛΟΓΙΣΘΗ Η ΣΥΧΝΟΤΗΣ ΜΙΑΣ ΝΕΑΣ ΜΟΡΙΑΚΗΣ ΜΟΡΦΗΣ ΤΗΣ MDH - 1 ΕΙΣ ΠΛΗΘΥΣΜΟΥΣ ΤΗΣ DROSOPHILA MELANOGASTER. 4) ΗΡΕΥΝΗΘΗ ΕΙΣ 13 ΤΕΧΝΗΤΟΥΣ ΠΛΗΘΥΣΜΟΥΣ, ΕΝΤΟΣ ΚΛΩΒΩΝ,ΔΙΑ ΤΩΝ ΑΛΛΟΕΝΖΥΜΙΚΩΝ ΣΥΧΝΟΤΗΤΩΝ ΤΩΝ Α - GPDH ΚΑΙ ADH Η ΕΠΙ ΤΟΥ ΓΟΝΙΔΙΑΚΟΥ ΑΠΟΘΕΜΑΤΟΣ (GENE POOL) ΕΠΙΛΟΓΙΚΗ ΕΠΙΔΡΑΣΙΣ ΤΡΙΩΝ ΟΙΚΟΛΟΓΙΚΩΝ ΠΑΡΑΜΕΤΡΩΝ, ΗΤΟΙ ΤΟΥ "ΘΡΕΠΤΙΚΟΥ ΜΕΣΟΥ", ΤΗΣ "ΥΓΡΑΣΙΑΣ" ΚΑΙ ΤΗΣ "ΘΕΡΜΟΚΡΑΣΙΑΣ". 5) ΑΝΕΥΡΕΘΗ ΟΤΙ ΗΔΙΑΜΟΡΦΩΣΙΣ ΤΩΝ ΠΡΟΤΥΠΩΝ ΤΩΝ ΑΛΛΟΕΝΖΥΜΙΚΩΝ ΣΥΧΝΟΤΗΤΩΝ ΕΞΑΡΤΑΤΑΙ ΕΚ ΤΗΣ ΔΡΑΣΕΩΣ ΚΑΙ ΤΩΝ ΤΡΙΩΝ ΜΕΛΕΤΗΘΕΝΤΩΝ ΟΙΚΟΛΟΓΙΚΩΝ ΠΑΡΑΓΟΝΤΩΝ ΚΥΡΙΩΣ ΔΕ ΕΚ ΤΟΥ ΘΡΕΠΤΙΚΟΥ ΜΕΣΟΥ ΤΟΥ ΟΠΟΙΟΥ Η ΕΠΙΔΡΑΣΙΣ, ΑΠΕΔΕΙΧΘΗ ΔΙΑ ΣΥΓΚΛΙΝΟΝΤΩΝ ΠΕΙΡΑΜΑΤΩΝ ΘΕΑΜΑΤΙΚΩΤΑΤΗ. ΔΙΑ ΤΩΝ ΕΝ ΛΟΓΩ ΠΡΟΤΥΠΩΝ ΕΜΕΛΕΤΗΘΗ ΚΑΙ Ο ΤΡΟΠΟΣ ΕΠΙΔΡΑΣΕΩΣ ΤΩΝ ΑΥΤΩΝ ΟΙΚΟΛΟΓΙΚΩΝ ΣΥΝΘΗΚΩΝ ΕΠΙ ΔΙΑΦΟΡΕΤΙΚΩΝ ΓΟΝΑΔΙΑΚΩΝ ΑΠΟΘΕΜΑΤΩΝ. (ΠΕΡΙΚΟΠΗ ΠΕΡΙΛΗΨΗΣ
Isozyme genotype-environment relationship in artificial cage populations originated from a Southern Greek D. melanogaster natural population.
uploaded by Plazi from Taxodro
Adaptation of Drosophila enzymes to temperature—I. Acetylcholinesterase and NADP-dependent isocitrate-dehydrogenase
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