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Genome size in Tribolium flour-beetles: inter- and intraspecific variation

Published online by Cambridge University Press:  14 April 2009

Asunción Alvarez-Fuster ,
Carlos Juan  and
Eduard Petitpierre
Asunción Alvarez-Fuster
Affiliation:
Laboratori de Genètica, Departament de Biologia Ambiental, Facultat de Ciències, Universitat de les Illes Batears, 07071 Palma de Mallorca. Spain
Carlos Juan
Affiliation:
Laboratori de Genètica, Departament de Biologia Ambiental, Facultat de Ciències, Universitat de les Illes Batears, 07071 Palma de Mallorca. Spain
Eduard Petitpierre*
Affiliation:
Laboratori de Genètica, Departament de Biologia Ambiental, Facultat de Ciències, Universitat de les Illes Batears, 07071 Palma de Mallorca. Spain
*
† Corresponding author.
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Eight species of Tribolium and the related species Alphitobius diaperinus have been microdensitometrically analysed by measuring the nuclear content (1C value) of their Feuigenstained spermatids. The range of mean genome sizes goes from 0·157 pg in T. audax to 0·388 pg in T. brevicornis, including five significantly different groups of values. Also, in ail but one species of Tribolium significant intraspecific heterogeneity of genome size was found. The resemblances in genome size are not generally correlated with genetic homologies among species, but there is a highly significant correlation between genome size and spermatid size.

Type
Research Article
Information
Genetics Research , Volume 58 , Issue 1 , August 1991 , pp. 1 - 5
Copyright
Copyright © Cambridge University Press 1991

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