Genonme size in Tribolium flour-beetles: inter- and intraspecific variation
1991
Alvarez-Fuster, A. | Juan, C. | Petitpierre, E.
Eight species of Tribolium and the related species Alphitobius diaperinus have been microdensitometrically analysed by measuring the nuclear content (1 C value) of their Feulgen-stained 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 all 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.
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