Structure and ultrastructure of the spermatozoa of Trypoxylon (Trypargilum) albitarse Fabricius 1804 (Hymenoptera: Apoidea: Crabronidae)

Araújo, Vinícius Albano; Moreira, Jane; Lino‐Neto, José

doi:10.1016/j.micron.2009.05.003

Cited by 21 publications

(22 citation statements)

References 23 publications

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“…Spermatozoa from L. dieloceri, measuring 140 mm, are the longest reported for Ichneumonidae; while spermatozoa from Pachysomoides sp., measuring 28 mm, are the smallest registered for the family, with observations varying from 55 mm (Alomyinae, Quicke et al, 1992) to 100 mm (Ichneumoninae, Chauvin et al, 1988) in literature. Spermatozoa from the two species analyzed are linear as found in other species of Ichneumonidae (Quicke et al, 1992) and in most Aculeata (Hoage and Kessel, 1968;Cruz-Hö fling et al, 1970;Lensky et al, 1979;Wheeler et al, 1990;Peng et al, 1992Peng et al, , 1993Lino-Neto and Dolder, 2002;Zama et al, 2001Zama et al, , 2004Zama et al, , 2005aAraú jo et al, 2005bAraú jo et al, , 2009Fiorillo et al, 2005;Mancini et al, 2006;Moya et al, 2007). However, linear spermatozoa differentiate Ichneumonidae from other parasitic wasps such as Chalcidoidea (Lino-Neto et al, 1999, 2000aBrito et al, 2009) andPlatygastroidea (Lino-Neto andDolder, 2001b), which present spiral spermatozoa.…”

Section: Discussionmentioning

confidence: 91%

Structural and ultrastructural characteristics of male reproductive tract and spermatozoa in two Cryptinae species (Hymenoptera: Ichneumonidae)

Moreira

Araújo

Báo

et al. 2010

Micron

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This study represents the first characterization of male reproductive tracts and ultrastructural description of sperm of Cryptinae species. In Lymeon dieloceri and Pachysomoides sp., the male reproductive tract is formed by a pair of testis, two deferent ducts, two accessory glands and one ejaculatory duct. The spermatozoa are similar to those described for other Hymenoptera, with: (1) the acrosome formed by the acrosomal vesicle covering the perforatorium, which has its base inserted in a cavity located in the nucleus point; (2) a thin nucleus with electron-dense chromatin; (3) an electron-dense centriolar adjunct located between the nucleus and one of the two mitochondrial derivatives; (4) an axoneme with a 9 + 9 + 2 microtubule arrangement; (5) two long mitochondrial derivatives with peripheral cristae and; (6) two accessory bodies located between the two mitochondrial derivatives and the axoneme. These ichneumonids present structural characteristics similar to other parasitic wasps, such as presence of a single follicle per testis, layer of extracellular material enveloping the acrosome and accessory microtubules ending before others in final portion of the flagellum. However, male reproductive system and the spermatozoa presented morphological characteristics that allowed their differentiation, such as oval shapes accessory glands and the symmetric mitochondrial derivatives in L. dieloceri compared to the spherical accessory glands and asymmetrical derivatives observed in Pachysomoides sp. Taken together, data presented here demonstrates that diversity of morphological characteristic from the male reproductive tract and spermatozoa in Hymenoptera might provide a character system that can be used, in association with other systems, to resolve various uncertainties about the evolutionary relationships of this insect group.

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Section: Discussionmentioning

confidence: 91%

Structural and ultrastructural characteristics of male reproductive tract and spermatozoa in two Cryptinae species (Hymenoptera: Ichneumonidae)

Moreira

Araújo

Báo

et al. 2010

Micron

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“…In some groups, sperm size and morphology even vary among related species (Immler et al, 2007;Pitnick et al, 2009). Franzén (1970) and Wirth (1984) suggested the potential value of sperm morphology for phylogenetic studies on invertebrates, a group in which the highest diversity of these cells has been observed (Araújo et al, 2009(Araújo et al, , in press, 2010Levron et al, 2010;Moreira et al, 2010;Paccagnini et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Ultrastructure and heteromorphism of spermatozoa in five species of bugs (Pentatomidae: Heteroptera)

Araújo

Lino‐Neto

Ramalho

et al. 2011

Micron

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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.

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“…In most species of insects studied, the nucleus of the sperm is circular in cross-section throughout its length (Chawanji et al, 2006;Araújo et al, 2009Araújo et al, , 2010Moreira et al, 2012). In contrast, the sperm nucleus in E. nanus changes from thumbtackshaped to cylindrical in cross-section from front to rear.…”

Section: Discussionmentioning

confidence: 99%

“…The size and morphology of spermatozoa vary among related species (Immler et al, 2007) and comparative studies on the spermatozoa of different groups may improve our understanding of interspecific morphological differences, thus providing additional characters for taxonomic analysis and understanding of insect relationships (Alves et al, 2006;Dallai et al, 2008;Araújo et al, 2009Araújo et al, , 2010Araújo et al, , 2011Name et al, 2010;Simmons, 2011;Vitale et al, 2011), and morphological adaptations (Sivinski, 1984;Jamieson et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Ultrastructure of the spermatozoa of Psammotettix striatus (Linnaeus) and Exitianus nanus (Distant) (Hemiptera: Auchenorrhyncha: Cicadellidae: Deltocephalinae)

Dietrich

Zhang

et al. 2014

Arthropod Structure & Development

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Structure and ultrastructure of the spermatozoa of Trypoxylon (Trypargilum) albitarse Fabricius 1804 (Hymenoptera: Apoidea: Crabronidae)

Cited by 21 publications

References 23 publications

Structural and ultrastructural characteristics of male reproductive tract and spermatozoa in two Cryptinae species (Hymenoptera: Ichneumonidae)

Structural and ultrastructural characteristics of male reproductive tract and spermatozoa in two Cryptinae species (Hymenoptera: Ichneumonidae)

Ultrastructure and heteromorphism of spermatozoa in five species of bugs (Pentatomidae: Heteroptera)

Ultrastructure of the spermatozoa of Psammotettix striatus (Linnaeus) and Exitianus nanus (Distant) (Hemiptera: Auchenorrhyncha: Cicadellidae: Deltocephalinae)

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