Introduction Abstract. Recordings were made from the pheromone-sensitive receptor cells within antennal hairs of normal and mutant male cabbage loopers, Trichoplusia ni (Hubner) (Lepidoptera: Noctuidae), using a cut-sensillum technique. From sampling 136 sensilla on normal males and 123 on mutant males, cells excited by pairs of behaviour ally redundant minor pheromone components were discovere...

We used single-sensillum recordings to characterize male Heliothis subflexa antennal olfactory receptor neuron physiology in response to compounds related to their sex pheromone. The recordings were then followed by cobalt staining in order to trace the neurons' axons to their glomerular destinations in the antennal lobe. Receptor neurons responding to the major pheromone component, (Z)-11-hexa...

Phytophagous insects use blends of volatiles released from plants to select hosts for feeding and oviposition. To behaviorally analyze complex blends, we need efficient and selective methods for elucidating neuron types, their ligands, and specificity. Gas chromatography-combined single sensillum recordings (GC-SSRs) from antennal olfactory sensilla of female moth, Spodoptera littoralis reveale...

Fluctuations in the receptor current of the labellar sugar receptor of the fleshfly were analyzed. The receptor current was recorded extracellularly as a drop in potential between the tip and the base of the taste sensillum. After treatment with tetrodotoxin, the taste cells completely lost their impulses but retained their receptor currents, thus facilitating analysis of the receptor current w...

We report the identification of a defensive secretion from the green lacewing, Chrysoperla earnea By using combined gas chromatography-electroantennographic detection (GC-EAD), we found one major compound in the solvent extract of this secretion that elicited a significant BAD response from the antenna Based upon its characteristic fragments fiom gas chromatography-mass spectrometry (GC-MS) ana...

Proboscis structure and sensilla types are important morphological characters for the systematic analysis of Lepidoptera families. There is no study on proboscis Aporia crataegi (Linnaeus, 1758) (Lepidoptera: Pieridae) despite fact that it an pest. For this purpose, A. were investigated by using stereomicroscope scanning electron microscope in detail. The results show has three sensillum (sensi...

bugs, have served as models for studies on insect physiology for well over half a century (Wigglesworth and Gillett, 1934). Triatoma infestans (Klug) the most studied species, is one of the main vectors of American trypanosomiasis or Chagas’ disease in South America. Adults and larvae of this insect occupy predominantly domestic habitats, although they are also associated with peridomestic chic...