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Microsc Res Tech

Title:		Morphological characterization and distribution of antennal sensilla of Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) using scanning electron microscopy
Author(s):		Abalavadi Thammaiah R; Pathour S; Meshram N; Kammar V; Majumder S; Srivastava C; Pandey K; Singh J;
Address:		"ICAR-IIHR-Central Horticultural Experiment Station, Kodagu, Karnataka, India. Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi, India. ICAR-Central Citrus Research Institute, Nagpur, Maharashtra, India. Department of Entomology, GKVK, UAS, Bengaluru, Karnataka, India. Division of Crop Protection, ICAR-Indian Institute of Vegetable Research, Varanasi, Uttar Pradesh, India. ICAR-Indian Institute of Vegetable Research, Varanasi, Uttar Pradesh, India"
Journal Title:		Microsc Res Tech
Year:		2022
Volume:		20211129
Issue:		4
Page Number:		1371 - 1391
DOI:		10.1002/jemt.24002
ISSN/ISBN:		1097-0029 (Electronic) 1059-910X (Linking)
Abstract:		"Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) is a serious polyphagous pest of various field and horticultural crops. A complete knowledge on the morphological features of antennal sensory structures is essential for efficient semiochemical-based control methods. The external structure and distribution of antennal sensilla in male and female adults of H. armigera were investigated using scanning electron microscopy. Eight distinct morphological types of sensilla were identified in both sexes: sensilla trichodea, sensilla basiconica, sensilla auricillica, sensilla coeloconica (multiporous), sensilla chaetica (uniporous), sensilla styloconica, sensilla squamiformia, and Bohm sensilla (aporous) in varying numbers and distribution along the length of the antennae. Of these sensilla, the most widespread are sensilla trichodea and sensilla basiconica on the antennae of both sexes. Female antennae have comparatively greater number of sensilla trichodea than male antennae. Among eight types of sensilla, sensilla basiconica, auricillica, styloconica type II, squamiformia, and Bohm sensilla were identified and reported for the first time in H. armigera. Sexual dimorphism in H. armigera was mainly detected as the variations in sensilla shape, numbers, and distribution of each type of sensilla. The sexual difference was observed in the numbers of sensilla coeloconica, chaetica, styloconica, and squamiformia per flagellomere. The possible functions of these sensilla were discussed in view of previously reported lepidopteran insects. The findings provide fundamental information on the morphology and distribution of antennal sensory structures in H. armigera. It would be useful for further detailed studies on physiological and behavioral function of each sensillum type and helpful for formulating related pest control methods"
Keywords:		"Animals Arthropod Antennae/anatomy & histology Female Male Microscopy, Electron, Scanning *Moths/anatomy & histology Pheromones *Sensilla/anatomy & histology Sex Characteristics Helicoverpa armigera polyphagous scanning electron microscopy semiochemical s;"
Notes:		"MedlineAbalavadi Thammaiah, Rani Pathour, Shashank Meshram, Naresh Kammar, Vasudev Majumder, Sujan Srivastava, Chitra Pandey, Koshlendra Singh, Jagdish eng 2021/11/30 Microsc Res Tech. 2022 Apr; 85(4):1371-1391. doi: 10.1002/jemt.24002. Epub 2021 Nov 29"