Results 171 to 180 of about 5,626 (205)
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Activity modulation in cockroach sensillum: The role of octopamine
Journal of Insect Physiology, 2006The plasticity of sensory perception is provided partially by modulation of receptor cells. The electrical activity of American cockroach chemoreceptor cells in response to sex pheromone was measured under the influence of octopamine treatment and tracheal anoxia.
M I, Zhukovskaya, S V, Kapitsky
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Chemoreceptor sensillum structure in Limulus
Journal of Morphology, 1966AbstractThe chemoreceptors of Limulus polyphemus (L.) are polyneuronal sensilla found in the spines of the coxal gnathobases of each walking leg, the spines of the chilarial appendages, and the chelae of all the limbs. Each sensillum contains 6–15 bipolar sensory cells that share a single pore in the cuticle.
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Mechanoreceptive sensillum fields at the tarsal tip of insect legs
Journal of Morphology, 2018AbstractGroups of mechanoreceptive sensilla form small sensory fields on the ventral rim of the most distal tarsomeres in insects. Within these fields two or three sensilla are located closely together. Anterior and posterior fields are found in all three pairs of legs with only a few exceptions.
Anna‐Christin Joel +2 more
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Ultrastructure of the blowfly chemoreceptor sensillum (Phormia regina)
Journal of Morphology, 1976AbstractThe ultrastructure of a well studied insect chemosensory unit is presented in this report. Two separate lumina are present in this chemosensory unit, the trichogen and sensillar lumina. The fluid within the trichogen lumen exclusively bathes the dendritic terminals, and may be involved with the reception and/or modulation of environmental ...
B T, Felt, J S, Vande Berg
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Ant Nestmate and Non-Nestmate Discrimination by a Chemosensory Sensillum
Science, 2005In animal societies, chemical communication plays an important role in conflict and cooperation. For ants, cuticular hydrocarbon (CHC) blends produced by non-nestmates elicit overt aggression. We describe a sensory sensillum on the antennae of the carpenter ant Camponotus japonicus that ...
Mamiko, Ozaki +7 more
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Age Dependency of Response in an Insect Chemoreceptor Sensillum
Nature, 1970THE electrical responses of contact chemoreceptors on the mouthparts of many species of Diptera can determine whether or not a fluid medium is ingested. In the blowfly Phormia terranovae, the responses of the large bristle-like sensilla, which occur in two aboral patches on the labellar lobes, regulate the extension of the proboscis and the opening of ...
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A dual function of the Notch gene in Drosophila sensillum development
Developmental Biology, 1990We have investigated the function of the neurogenic gene Notch (N) during development of the adult sensilla of Drosophila. Heat pulses were applied to flies carrying the temperature-sensitive Notch allele Nts1 at different larval and pupal stages. We can show that the reduction of Notch+ function during a short interval prior to the onset of sensillum ...
V, Hartenstein, J W, Posakony
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Three-dimensional reconstruction of insect chemosensory sensillum
International Journal of Biological MacromoleculesThe olfactory system is involved in food and mate recognition in insects. However, 3D structures of chemosensory sensilla in insects are unexplored yet. Here, the internal structures of an olfactory sensillum on the antenna of the brown planthopper, Nilaparvata lugens (Hemiptera: Delphacidae), one of the most important rice pests, are examined and ...
Jian-Sheng, Guo +5 more
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Fine structure of the chemoreceptor sensillum in Limulus
Journal of Morphology, 1971AbstractEach chemoreceptor sensillum of Limulus polyphemus consists of 6–15 bipolar neurosensory cells with distal processes confined within a single cuticular tubule as they extend to the outside environment. The cuticular tubule, which is enveloped by the cuticulo‐tubal cell, opens proximally into a fluid‐filled extracellular space through which the ...
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Ultrastructure and physiology of the hooded sensillum, a bimodal chemo‐mechanosensillum of lobsters
Journal of Comparative Neurology, 2001AbstractThe antennules of decapod crustaceans are covered with thousands of chemosensilla that mediate odor discrimination and orientation behaviors. Most studies on chemoreception in decapods have focused on the prominent aesthetasc sensilla. However, previous behavioral studies on lobsters following selective sensillar ablation have revealed that ...
Holly S, Cate, Charles D, Derby
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