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Structure of the dorsal eye region of the moth,Adoxophyes reticulana Hb. (Lepidoptera : Tortricidae)
Institution:1. School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, Bristol BS8 1TQ, UK;1. Ligue pour la Protection des Oiseaux Aquitaine, le Bourg, 24110 Bourrou France;2. INRAE, Bordeaux Sciences Agro, UMR 1065 Sante et Agroecologie du Vignoble, 33882, Villenave d’Ornon, France;3. Eliomys, 23 route Mahele, 33240 Saint Genes de Fronsac France;4. Institut Francais de la Vigne et du Vin (IFV) Beaune, 6 rue du 16eChasseurs 21200 Beaune France;1. Department of Zoology and Animal Cell Biology, University of the Basque Country, UPV/EHU, Leioa, Basque Country, Spain;2. CIBIO/InBIO-UP, Research Centre in Biodiversity and Genetic Resources, University of Porto, Rua Padre Armando Quintas, 4485-661 Vairão, Portugal;3. CEABN-InBIO, Centre for Applied Ecology “Prof. Baeta Neves”, Institute of Agronomy, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal;4. School of Biological Sciences, University of Bristol, Woodland Road, Bristol BS8 1UG, Bristol, United Kingdom;1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;2. Functional Morphology and Biomechanics, Zoological Institute, Kiel University, Kiel 24118, Germany;3. Beijing Institute of Astronautical System Engineering, Beijing 100076, China;1. Environmental Chemistry Department, IDAEA –CSIC, C/ Jordi Girona, 18-26, Barcelona 08034, Spain;2. Food Safety and Preservation Department, Institute of Agrochemistry and Food Technology (IATA-CSIC), Valencia, Spain;3. Interdisciplinary Platform for Sustainable Plastics towards a Circular Economy, Spanish National Research Council (SusPlast-CSIC), Madrid, Spain
Abstract:Ommatidia of the eucon compound eye of Adoxophyes reticulana (Lepidoptera : Tortricidae) were investigated elect ronmicroscopically. The dorsofrontal part and the dorsal rim region were examined in serial sections. Seven radially arranged retinula cells RC1−7 form the rhabdom from distal to proximal region (Fig. 1). The 8th retinula cell RC8 joins the first 7 at their bases; this cell enlarges proximally (Fig. 1C, D). In the dorsofrontal region, 2 types of rhabdoms are distinguished; Type II (Figs. 1B2;3b) outnumbers Type I (Figs. 1B1;3a by a ratio of 4 : l. In the dorsal rim area, the first 2 rows are occupied exclusively by Type 11-rhabdoms; beyond this, the rhabdom of the dorsal rim area is characterized by the fact that its middle and proximal parts are considerably larger in diameter than in the dorsofrontal part; in this region, the microvilli of the horizontally oriented rhabdomeres are also parallel to the ;,-axis of the eye (Figs. 1B3;3d). Thus, this small eye region meets the structural requirements for the detection of polarized light. The eye is interpreted as an intermediate between apposition and superposition eyes, because the rhabdom begins at the tip of the crystalline tract and the retinula cells are pigmented like those of an apposition eye. On the other hand, the structure of the dioptric apparatus and the tracheal system corresponds to those of superposition eyes. Parallels with the Ephestia eye in basic structural features are discussed in regard to the possible function of this eye and to the systematic position of A. reticulana.
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