Structure of the sex pheromone-producing prothoracic glands of the male old house borer,Hylotrupes bajulus (L.) (Coleoptera : Cerambycidae) |
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| Institution: | 2. Systemic Conservation Biology, Department of Biology, Georg-August University Göttingen, Göttingen, Germany;3. National Great Rivers Research and Education Center (NGRREC), East Alton, Illinois, USA;4. Research Centre for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing, China;5. Department of Life Sciences, Imperial College London, London, United Kingdom;1. Indian River Research and Education Center, University of Florida, Fort Pierce, FL 34945, USA;2. United States Horticultural Research Laboratory, United States Department of Agriculture, Agricultural Research Service, 2001 South Rock Road, Ft. Pierce, FL 34945, USA;3. Université de Toulouse, UPS, Institut de Recherche pour le Développement (IRD), UMR 152 Pharma-Dev, Faculté des Sciences Pharmaceutiques, F-31062 Toulouse cedex 09, France;1. College of Life Sciences, Huaibei Normal University, Huaibei, China;2. Institute of Millet Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China;3. Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China |
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| Abstract: | Pheromone glands were discovered in the prothorax of male Hylotrupes bajulus (L.) (Coleoptera : Cerambycidae). These exocrine glands were investigated by SEM and light microscopy. Almost the entire prothorax is internally lined with a glandular matrix composed of numerous heap-like complex glands. Each gland is divided into several subunits (“pore field units”), which in turn are composed of a varying number of glandular units. The glandular unit comprises a distal voluminous glandular cell, a medial (intercalary) canal cell I, and a minute canal cell II near the cuticle. The spindle-like, basally constricted receiving canal of the gland cell leads into the long, non-porous conducting canal, which, by a single cuticle canal, opens in an external pore field, an aggregate of orifices of other such cuticle canals. In varying numbers, these randomly arranged pore fields are located in superficial pits that are distributed over nearly the entire prothorax. The structure of these male sex pheromone glands is discussed in comparison with other known glands in species of Coleoptera characterized by multicellular aggregations and by pore plates. |
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