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Antennal sensory system of the cockroach, Periplaneta americana : Postembryonic development and morphology of the sense organs

1973; Wiley; Volume: 149; Issue: 3 Linguagem: Inglês

10.1002/cne.901490304

1096-9861

Rollie Schafer, Thomas V. Sanchez,

Insects and Parasite Interactions

Abstract Antennal growth in the cockroach, Periplaneta americana , takes place by division of the meriston (third antennal segment) and the meristal segments at the base of the antennal flagellum. Olfactory and contact chemoreceptive sense organs are the most numerous receptor organs on the antenna at all stages of postembryonic development. The sensory complement of male and female antennae is identical during the nymphal period, but a large difference between sexes appears at the adult stage. The adult male has nearly twice as many olfactory sensilla as the female, and more than half of these sensilla appear at the adult stage. These morphological data are consistent with the hypothesis that sensory receptors specific to the female sex attractant appear in the male only at the adult stage.