ISSN:
1432-0878
Keywords:
Hygroreceptive sensillum
;
Cockroach
;
Antenna
;
External structure
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary The antennal hygro- and thermoreceptive sensillum (sensillum capitulum) of the cockraoch, Periplaneta americana, has been identified electrophysiologically and examined by scanning electron microscopy. It appears basiconic and has a characteristic cuticular apparatus; a mushroom-shaped inner stem and a non-perforated outer wall. The head of the inner stem, which is a cap of about 0.5 μm diameter, protrudes from the distal margin of the outer wall. The inner stem is not perforated, though in some cases a tiny hollow is observed in the apex of the cap. This kind of cuticular apparatus is not found in other sensilla and may be modality-specific to hygro- and/or thermoreception. The sensillum capitulum occurs singly on the distal part of each alternating segment of the flagellum and on each segment of some distal meristal segments.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00218361
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