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Ultrastructural characterization of the spermatozoa of Aethalion reticulatum Linnaeus 1767 (Hemiptera: Auchenorrhyncha: Aethalionidae)
Authors:Vinícius Albano Araújo  S?nia Nair Báo  Jane Moreira  Clóvis Andrade Neves  José Lino-Neto
Affiliation:1. Graduate Program in Entomology, Department of Animal Biology, Federal University of Viçosa, Minas Gerais, CEP: 36570-000, Brazil;2. Department of General Biology, Federal University of Viçosa, Minas Gerais, CEP: 36570-000, Brazil;3. Department of Cellular Biology, Institute of Biological Sciences, University of Brasília, Distrito Federal, CEP: 70919-970, Brazil;1. Consiglio per la Ricerca e la sperimentazione in Agricoltura, Centro di Ricerca per l’Agrobiologia e la Pedologia (CRA-ABP), via di Lanciola 12/a, Cascine del Riccio, 50125 Firenze, Italy;2. Department of Life Sciences, University of Siena, via Aldo Moro 2, 53100 Siena, Italy;3. ENEA Casaccia, UTAGRI-ECO, via Anguillarese 301, 00123 Rome, Italy;1. Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil;2. Instituto Federal de Educação, Ciência e Tecnologia do Mato Grosso, Campus Juína, 78320-000, Juína, Mato Grosso, Brazil;1. Dipartimento Scienze della Vita, Università degli Studi di Siena, Via Aldo Moro 2, 53100 Siena, Italy;2. Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil;3. Departamento de Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Universitário Morro do Cruzeiro, CEP 35400-000, Ouro Preto, MG, Brazil;1. Laboratório de Cupins, Departamento de Biologia, Instituto de Biociências, Univ Estadual Paulista, UNESP, Campus Rio Claro, Avenida 24A, 1515, Bela Vista, Rio Claro, SP 13506-900, Brazil;2. Instituto de Ciências Agrárias, Universidade Federal de Uberlândia, UFU, Campus Monte Carmelo, Rodovia LMG 746, km 01, Monte Carmelo, MG 38500-000, Brazil;1. Department of Life Sciences, University of Siena, Via A. Moro 2, I-53100 Siena, Italy;2. Sugadaira Montane Research Center, University of Tsukuba, Nagano 386-2204, Japan
Abstract:The Hemiptera order is currently divided into four suborders. Among them the Auchenorrhyncha suborder is considered to be paraphyletic. Morphology of insect spermatozoa has provided promising characteristics that can be used for phylogenetic inference. In this study, Aethalion reticulatum (Aethalionidae) spermatozoa were examined by light and electron microscopy. The head of the spermatozoa is composed of an acrosome and a nucleus. The nucleus is linear and filled with compact chromatin but has electron-lucid spaces. The centriole adjunct initiates parallel to the nucleus and terminates in the region anterior to the mitochondrial derivatives. Flagella consist of an axoneme, two mitochondrial derivatives and two accessory bodies and the axoneme has the typical 9 + 9 + 2 microtubule pattern. The mitochondrial derivatives are symmetric. The accessory bodies are long and are shaped like a half moon when viewed from a cross-section. The presence of accessory bodies differs from other species of Cicadomorpha previously studied. Spermatozoa morphology of other Auchenorrhyncha families can reveal synapomorphies and contribute to systematics of the suborder.
Keywords:
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