Organization of the tropharia in the telotrophic ovaries of the dipsocoromorphan bugs Cryptostemma alienum Herrich-Schaeffer and C. carpaticum Josifov (Heteroptera : Dipsocoridae) |
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| Institution: | 1. Institute of Biology, Campinas State University (Unicamp), Block O, Bertrand Russel Avenue, Campinas, São Paulo 13083-865, Brazil.;2. São Paulo State University (Unesp), School of Pharmaceutical Sciences, Araraquara-Jaú Highway, km 1, Campos Ville, Araraquara, São Paulo 14800-903, Brazil.;3. Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil.;1. B S Abdur Rahman Crescent Institute of Science and Technology, Chennai, India;2. Indian Institute of Natural Resins and Gums, Namkum, Ranchi, India |
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| Abstract: | The tropharia of the dipsocoromorphan bugs, Cryptostemma alienum and Cryptostemma carpaticum (Heteroptera : Dipsocoridae) are composed of 30–50 mononucleate nurse cells that are connected with centrally located trophic cores by means of broad cytoplasmic strands. The anteriormost nurse cells are markedly smaller and often reveal signs of degeneration. The trophic core is surrounded and penetrated by elaborate F-actin meshwork. Arrested oocytes and prefollicular cells are localized at the base of the tropharium. Anagenesis of heteropteran ovarioles is discussed in relation to the findings presented. |
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