Anatomia da apis mellifera. 7, views Learning to Write a Syllabus. Online Course – LinkedIn Learning · Insights from a College Career Coach. Apis mellifera Linnaeus (Hymenoptera, Apidae) between and . 1 d. Gliindulas anexas ao aparelho de ferrao das abelhas, anatomia e histologia ( Hyme-. 11 mar. Aspectos morfológicos e anatómicos da abelha. Apis mellifera. A atividade quimica na organização e defesa da colónia. Anatomia externa.

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Thin and short prolongations, known as efferent ducts, arise from the extremity of each seminiferous tubule and join in a single common duct, the deferent duct, which show apical dilation that forms the seminal vesicle, dividing the deferent ducts into a pre- and post-vesicular portion.

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The wpis genital organs of males of 51 bee species, belonging to six families, were studied Table 1. Therefore, it was done a comparative anatomical study of the internal genital organs of adult males of 51 bee species.

In the Apidae with MRA of the Type II, the seminal vesicles differ only slightly from the pre- and post-vesicular deferent ducts, and the post-vesicular ducts open at the final opens at the final portion of the accessory glands, next to the ejaculatory duct Figs. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution Melllifera.

The species that belong to the phylogenetical intermediate families, Melittidae and Megachilidae, and some species of Apidae, presented Type II, which showed intermediate or transitional anatomical characters. Results and Discussion The results allowed separating the 51 species of bees studied into at least four types of organization of the male reproductive apparatus MRA. Each contains one testis and one seminal vesicle Fig.

After this period, the number of protein bands in electrophoretic gels reduce, when at eight days old drones is present only three dominant polypeptides.


Trabajos sobre Anatomía

The similarity of the MRA of meliponines to that of the basal solitary bees is not the only similarity between these two groups of bees. In the Megachilidae and Melittidae, these ducts may open at the same site as seen in the Apidae Figs. Taking into account the possibility that the accessory gland secretion inhibits further matings, the absence of these glands in meliponines might be explained by the species being monoandric.

Ultrastructure of the ducts of the reproductive tract of males of Melipona bicolor Lepeletier Hymenoptera, Apidae, Meliponini. Their histological structures and physiological functioning. Type III was only found in the Apidae studied meplifera is characterized by separately encapsulated testes and genital ducts except for the post-vesicular deferent duct.

Therefore, there appears to be a selective pressure towards and mellidera production of spermatozoa by the meliponine males, thus showing a larger size mellifefa the testes.

Type IV is similar to Type I, but it is only found in all meliponines studied. There was also an increase in distance between the testes and the rest of the internal organs due to the elongation of the post-vesicular deferent ducts, anafomia production of accessory gland secretion, and a spermatozoa releasing closer to the ejaculatory apid.

Next, there is a displacement of the opening site of the post-vesicular duct, tending to be nearer the ejaculatory duct, as well as an increase in the length and diameter of the ejaculatory duct. After removing the genital organs in saline solution, these were schematized under a stereomicroscope with aid of a Zeiss Winkle camara lucida.

The male sexual organs: The seminiferous tubules are separated from one another by interstitial tissue; and individually encapsulated by a peritoneal membrane. Type I was found in almost all species studied of the families Colletidae except for Tricholletes venustus SmithAndrenidae, Halictidae, and Megachilidae except for Anthidium manicatum L.


On the cell provisioning and oviposition POP of the stingless bees nomenclature reappraisal and evolutionary considerations Hymenoptera, Apidae, Meliponine.

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 jellifera tubules per testis, except for Apis mellifera L.

It is characterized by a very high number of seminiferous tubules, about per testis Louveaux Literature Cited Alcock, J. Foram obtidos quatro tipos diferentes de ARM. The results allowed separating the 51 species of bees studied into at least four types of organization of the male reproductive apparatus MRA.

The greater development of the seminal vesicles may be an adaptation to the increase in the number and length of the seminiferous tubules and the absence of the accessory glands in stingless bees. The testes are formed by a variable number of solid filaments, known as seminiferous tubules. The remaining internal organs of the MRA, except for the ejaculatory mellitera and the accessory glands, also form a globular unit encapsulated by the scrotal membrane, which may be elongated Fig.

Services on Demand Journal. It is characterized by very long post-vesicular deferent ducts that are located outside the scrotal membrane Fig. There are few comparative studies concerning to the male reproductive apparatus in bees, especially on solitary and stingless species. In Xylocopacontrary to the observed in the other genera, the seminiferous tubules are straight and short, unfolded.

Four different types of Melliferw were found. The tubules are enveloped, as a group, by a scrotal membrane or capsule, forming a globular structure Cruz-Landim