Distribution of abundance and genome size variability in the grain beetle Oryzaephilus surinamensis (Linnaeus, 1758) (Coleoptera: Silvanidae)

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Authors

SHARAF Kamal BUREŠ Petr HOROVÁ Lucie PAVLÍČEK Tomáš NEVO Eviatar

Year of publication 2008
Type Article in Periodical
Magazine / Source Zoology in the Middle East
MU Faculty or unit

Faculty of Science

Citation
Web https://www.tandfonline.com/doi/abs/10.1080/09397140.2008.10638310
Field Botany
Keywords genome size; abundance; C-value; Evolution Canyon; Quercus; oak; Israel
Description We examined the distribution of abundance and genome size (GS, 2C-value) variability of the saw-toothed grain beetle Oryzaephilus surinamensis on the opposite slopes of the microsite Evolution Canyon (EC), Mt.Carmel, Israel. As controls, we used one sample of beetle population from a grain silo in Haifa and one sample from Upper Galilee (Sabalan Mts). The study showed that O. surinamensis is abundant in acorns of Quercus calliprinos (Palestine oak). The observed number of adults of O. surinamensis per acorn ranged from 0 to 12 at EC and 54% of acorns were not infected. At EC, O. surinamensis was more abundant on the European, garrigue-like north-facing slope (ES) than on the African, savannah-like south-facing (AS) slope, reflecting the interslope differences in the number of oak trees. There was a significant positive correlation between beetle abundance and number of acorns. Both the number of acorns and the number of beetles decreased with the ES altitude.
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