Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/18246
Tipo: Artigo
Título: Ultrastructure and heteromorphism of spermatozoa in five species of bugs (Pentatomidae: Heteroptera)
Autor(es): Araújo, Vinícius Albano
Lino-Neto, José
Ramalho, Francisco de Sousa
Zanuncio, José Cola
Serrão, José Eduardo
Abstract: Pentatomidae is one of the largest Heteroptera families, comprising about 10% of the species estimated for the suborder. In spite of existing studies, doubts remain regarding the systematics of Pentatomomorpha. In this study, five species of Pentatomidae spermatozoa were examined to achieve characteristics that enable inferences in the phylogeny of the group and in behavioral issues associated with the presence of polymorphisms. Spermatozoa polymorphisms, characterized by two classes of sizes, are found in Podisus nigrispinus, Podisus distinctus, and Brontocoris tabidus, whereas Thynacanta marginata (Dallas) and Supputius cincticeps have single-size spermatozoa. The head region consists of an acrosome, a nucleus, and part of the centriolar adjunct. In the more anterior region, the nucleus is parallel to the centriolar adjunct. In the nucleus-flagellum transition region, the nucleus overlaps the anterior region of the mitochondrial derivatives, just above the axoneme. The mitochondrial derivatives and the axoneme run the entire extent of the flagellum. In species in which the spermatozoa are polymorphic, the larger spermatozoa have derivatives mitochondrial approximately 3-fold larger than the smaller spermatozoa. Characteristics derived from the morphology of spermatozoa indicate synapomorphies and are promising for systematic studies.
Palavras-chave: Insect phylogeny
Polymorphic sperm
Mitochondrial derivatives
Hemiptera
Editor: Micron
Tipo de Acesso: Elsevier Ltd
URI: https://doi.org/10.1016/j.micron.2011.02.001
http://www.locus.ufv.br/handle/123456789/18246
Data do documento: 3-Fev-2011
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