Morfologia dos espermatozoides de Campoletis flavicincta (Hymenoptera: Icheneumonidae) e de Megastigmus transvaalensis (Hymenoptera: Chalcidoidea: Torymidae)

• Autor(a) principal: Gonçalves, Max Pereira
• Data de Publicação: 2012
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/261
• topic: Espermatozoide; Parasitoide; Testículos; Glândulas acessórias; Filogenia; Spermatozoon; Parasitoid; Testicles; Accessory glands; Phylogeny; CNPQ::CIENCIAS BIOLOGICAS::BIOLOGIA GERAL

In this work, the morphology of spermatozoa of Campoletis flavicincta and Megastigmus transvaalensis. In the families Ichneumonidae and Torymidae, ultrastrutural differences are found between spermatozoa, but small quantity of works about your morphology. In the family Torymidae, this is the first work about the ultrastructure of spermatozoa and in the family Ichneumonidae, one of the first. The spermatozoa of C. flavicincta are long thin cells, measuring approximately 80 μm in length, within the range observed in Ichneumonidae. The spermatozoa have a head and a tail. The head is formed by the acrosome and nucleus and an extracellular layer surrounds totally the acrosome and partially the nucleus. The flagellum of spermatozoa are formed, almost its entire length, by axoneme (9+9+2), two mitochondrial derivatives and two bodies accessories located between the axoneme and mitochondrial derivatives. The spermatozoa of M. transvaalensis shows similar morphological characteristics to the others Chalcidoidea. They are spiral-like and are consisted of a head and a flagellum. The head is consisted of an acrosome and nucleus. The flagellum is formed for two mitochondrial derivatives and an axoneme with 9+9+2 microtubular arrangement. The ultrastructure of spermatozoa of Hymenoptera has demonstrated the diversity of information that these reproductive structure can provide, which can be used in phylogenetic and taxonomic studies of these groups of insects, so this work aims to describe the ultrastructure of spermatozoa of C. flavicincta and M. transvaalensis.