Abstract
Sensilla in the sacculus of an antennal 3rd segment, a funiculus, of the fruit fly, Drosophila melanogaster (Diptera : Drosophilidae) have been examined by scanning electron microscopy. The sacculus was divided into 3 cavities in its interior. A morphologically distinct group of sensilla was present in each cavity. Grooved sensillum (GS), found in the largest cavity, was further subclassified on the basis of the side wall sculpture into 3 subgroups: GS Ia, GS Ib and GS II. GS Ia was 4 μm long and had 10-12 grooves (0.25 μm wide) and GS Ib was 3.8 μm long and had 6-9 grooves (0.25-0.4 μm wide). GS 1a and GS Ib were inferred to be olfactory and thermoreceptive, and olfactory, respectively. GS II was 3.2 μm long, and had 4-5 grooves. Basiconic sensillum (BS), found in the smallest cavity, was 4.5 μm long and had an irregularly sculptured side wall, suggesting the presence of numerous irregular-shaped olfactory pores. Blunt-tipped sensillum (BTS), found in the middle-sized cavity, was 1.9 μm long and had a smooth-surfaced side wall and a button-like structure on its apex. These features suggested that BTS was hygro- and thermoreceptive.
| Original language | English |
|---|---|
| Pages (from-to) | 235-243 |
| Number of pages | 9 |
| Journal | International Journal of Insect Morphology and Embryology |
| Volume | 20 |
| Issue number | 4-5 |
| DOIs | |
| Publication status | Published - Jan 1 1991 |
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All Science Journal Classification (ASJC) codes
- Developmental Biology
- Insect Science
Cite this
External morphology of sensilla in the sacculus of an antennal flagellum of the fruit fly Drosophila melanogaster Meigen (Diptera : Drosophilidae). / Itoh, T.; Yokohari, F.; Tanimura, Teiichi; Tominaga, Y.
In: International Journal of Insect Morphology and Embryology, Vol. 20, No. 4-5, 01.01.1991, p. 235-243.Research output: Contribution to journal › Article
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TY - JOUR
T1 - External morphology of sensilla in the sacculus of an antennal flagellum of the fruit fly Drosophila melanogaster Meigen (Diptera
T2 - Drosophilidae)
AU - Itoh, T.
AU - Yokohari, F.
AU - Tanimura, Teiichi
AU - Tominaga, Y.
PY - 1991/1/1
Y1 - 1991/1/1
N2 - Sensilla in the sacculus of an antennal 3rd segment, a funiculus, of the fruit fly, Drosophila melanogaster (Diptera : Drosophilidae) have been examined by scanning electron microscopy. The sacculus was divided into 3 cavities in its interior. A morphologically distinct group of sensilla was present in each cavity. Grooved sensillum (GS), found in the largest cavity, was further subclassified on the basis of the side wall sculpture into 3 subgroups: GS Ia, GS Ib and GS II. GS Ia was 4 μm long and had 10-12 grooves (0.25 μm wide) and GS Ib was 3.8 μm long and had 6-9 grooves (0.25-0.4 μm wide). GS 1a and GS Ib were inferred to be olfactory and thermoreceptive, and olfactory, respectively. GS II was 3.2 μm long, and had 4-5 grooves. Basiconic sensillum (BS), found in the smallest cavity, was 4.5 μm long and had an irregularly sculptured side wall, suggesting the presence of numerous irregular-shaped olfactory pores. Blunt-tipped sensillum (BTS), found in the middle-sized cavity, was 1.9 μm long and had a smooth-surfaced side wall and a button-like structure on its apex. These features suggested that BTS was hygro- and thermoreceptive.
AB - Sensilla in the sacculus of an antennal 3rd segment, a funiculus, of the fruit fly, Drosophila melanogaster (Diptera : Drosophilidae) have been examined by scanning electron microscopy. The sacculus was divided into 3 cavities in its interior. A morphologically distinct group of sensilla was present in each cavity. Grooved sensillum (GS), found in the largest cavity, was further subclassified on the basis of the side wall sculpture into 3 subgroups: GS Ia, GS Ib and GS II. GS Ia was 4 μm long and had 10-12 grooves (0.25 μm wide) and GS Ib was 3.8 μm long and had 6-9 grooves (0.25-0.4 μm wide). GS 1a and GS Ib were inferred to be olfactory and thermoreceptive, and olfactory, respectively. GS II was 3.2 μm long, and had 4-5 grooves. Basiconic sensillum (BS), found in the smallest cavity, was 4.5 μm long and had an irregularly sculptured side wall, suggesting the presence of numerous irregular-shaped olfactory pores. Blunt-tipped sensillum (BTS), found in the middle-sized cavity, was 1.9 μm long and had a smooth-surfaced side wall and a button-like structure on its apex. These features suggested that BTS was hygro- and thermoreceptive.
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U2 - 10.1016/0020-7322(91)90013-Y
DO - 10.1016/0020-7322(91)90013-Y
M3 - Article
VL - 20
SP - 235
EP - 243
JO - Arthropod Structure and Development
JF - Arthropod Structure and Development
SN - 1467-8039
IS - 4-5
ER -