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Fine structure, function and distribution of antennal sensilla in the saw‐toothed grain beetle, Oryzaephilus surinamensis
Author(s) -
WHITE PETER R.,
LUKE BARBARA M.
Publication year - 1986
Publication title -
physiological entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 57
eISSN - 1365-3032
pISSN - 0307-6962
DOI - 10.1111/j.1365-3032.1986.tb00410.x
Subject(s) - oryzaephilus surinamensis , biology , mechanoreceptor , anatomy , chemoreceptor , zoology , insect , botany , sensory system , receptor , neuroscience , biochemistry
. Antennae of the saw‐toothed grain beetle ( Oryzaephilus surinamensis L.) (Coleoptera: Silvanidae) were examined using scanning and transmission electron microscopy to determine the fine structure and distribution of sensilla. Seven morphologically different sensilla types are distinguished. Mechanoreceptor hairs account for over 68% of all sensilla. Mechanoreceptors are also found in conjunction with contact chemo‐receptors; this dual function is demonstrated by electrophysiological recordings. Three different types of olfactory chemoreceptor are found, accounting for 26% of all sensilla, plus two sensilla types with possible hygro/thermo‐receptor functions. Counts show the numbers of chemo‐receptors to be small, though this many simply reflect the small size of these beetles.