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Ultrastructure des soies glandulaires et sensorielles du premier sternite abdominal des mâles de Campodea chardardi Condé (Insecta: Diplura): modifications liées à la mue

Auteurs : Jacquemin (Gilles) et Bareth (Camille)

Année de publication : 1981
Publication : International Journal of Insect Morphology and Embryology
Volume : 10
Fascicule : 5-6
Pagination : 463-481

Résumé :

The study of the cellular complexes corresponding to the bristles of the edge of the 1st abdominal sternite of the males Campodea chardardi (Diplura) shows that these complexes are halfway between glandular and sensory formations. Each non-socketed bristle is hollow and open at its tip. Each is connected to a cellular complex, which consists of: 3 sensory-like cells, a huge glandular cell C1 an envelope cell C2 (trichogen), and an envelope cell C3 (tormogen). The outer dendritic segments are well developed only during molting. At this time, the 2 largest segments, containing numerous microtubules, extend to the vicinity of the apical pore; the 3rd segment, much shorter, ends in a tubular body located at the base of the bristle. Each complex has a typical mechano- and chemoreceptor structure. However, it is difficult to classify these formations as true sense organs, because the outer segments of the dendrites regress completely between 2 ecdyses, and no axon has clearly been detected. These cellular complexes have at the very most a temporary sensory function; they are first of all glandular formations, which might release a sexual pheromone.