Data/hora: 12/06/2024 16:59:27

Provedor de dados: | 82
País: | Brazil
Título: | Comparative anatomy of the male reproductive internal organs of 51 species of bees
Autores: | Ferreira,Amilton; Abdalla,Fábio C.; Kerr,Warwick E.; Cruz-Landim,Carminda da.
Data: | 2004-10-01
Ano: | 2004
Palavras-chave: | Accessory gland; Genitalia; Morphology.
Resumo: | The anatomy of the internal organs of the male reproductive apparatus (MRA) of adults and pupae was compared among 51 species of bees, including representatives of six families. Four different types of MRA were found. The type I is present in males of the less derived families (Colletidae, Andrenidae, and Halictidae) and is characterized by three seminiferous tubules per testis, which are almost completely enveloped by the scrotal membrane. The type II is an intermediary between types III and I and is present in Melittidae and Megachilidae, as well as in some Apidae studied, being characterized by post-vesicular deferent ducts outside the scrotal membrane and by three or four seminiferous tubules per testis, except for Apis mellifera L., which has a secondarily increased number of tubules. Type III was only found in the Apidae studied and is characterized by separately encapsulated testes and genital ducts (except for the post-vesicular deferent duct). Accessory glands are well developed, and the ejaculatory duct is thickened with fissures in its wall, which may also occur in the type II. Type IV is present exclusively in the tribe Meliponini, and is characterized by the absence of accessory glands.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000500005
Editor: | Sociedade Entomológica do Brasil
Relação: | 10.1590/S1519-566X2004000500005
Formato: | text/html
Fonte: | Neotropical Entomology  v.33 n.5 2004
Fonte: | info:eu-repo/semantics/openAccess