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Title: Sperm morphology of Trichospilus diatraeae and Palmistichus elaeisi (Hymenoptera: Chalcidoidea: Eulophidae).
Authors: Santos, Helen Pinto
Zama, Uyrá dos Santos
Dolder, Heidi
Lino Neto, José
Keywords: Spiraled sperm
Issue Date: 2013
Citation: SANTOS, H. P. et al. Sperm morphology of Trichospilus diatraeae and Palmistichus elaeisi (Hymenoptera: Chalcidoidea: Eulophidae). Micron, v. 51, p. 36-40, 2013. Disponível em: <>. Acesso em: 08 nov. 2014.
Abstract: In this study, the sperm morphology of the parasitoids Trichospilus diatraeae and Palmistichus elaeisis (Eulophidae) was investigated using light and transmission electron microscopy. In the two species, the sperm are spiral along their entire length and measure about 130 _m and 195 _m in length, respectively. The head region consists of the acrosome and nucleus. The acrosome is composed of an acrosomal vesicle and, in P. elaeisis, a perforatorium. In both species, an extracellular layer in which several filaments are radiated covers the acrosome and the anterior nuclear region. The nuclei are filled with homogeneous and compact chromatin and measure about 50 _m in length in P. elaeisis and 20 _m in T. diatraeae. The flagellum consists of an axoneme with the 9 + 9 + 2 microtubule arrangement spiraled in a long helix, two mitochondrial derivatives coiling around the axoneme and, in P. elaeisis, two accessory bodies. In T. diatraeae were observed transverse striations throughout the central region of the axoneme, whereas the central pair of microtubules was rarely observed. In the final flagellar region in T. diatraeae, different from P. elaeisis, one mitochondrial derivative ends well before the other and both end before the axoneme. The sperm of these two species exhibit features that discriminate one species from each other, as well as characteristics suggest that Eulophidae is closely related to Trichogrammatidae and both of these families are more similar to Eurytomidae than Agaonidae.
ISSN: 0968-4328
metadata.dc.rights.license: O periódico Micron concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3550930459981.
Appears in Collections:DECBI - Artigos publicados em periódicos

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