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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The rarity of multiple mating by females in the social Hymenoptera. In the Megachilidae there are three seminiferous tubules per testis Fig. Number of spermatozoa per cyst.

Comparative anatomy of the male reproductive internal organs of 51 species of bees

The bees of the world. The function of the accessory glands is not well known in bees. The meliponines differ from the other bees by the loss of the accessory glands. There are few comparative studies concerning to the male reproductive apparatus in bees, especially on solitary and stingless species. It is characterized by the absence of the accessory glands and by seminal vesicles that is much thicker than the anayomia ducts Fig. Anatkmia results allowed separating the 51 species of bees studied into at least four types of organization of the male reproductive apparatus MRA.

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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. Contrary to the solitary bees, however, the meliponine queen produces a much higher number of eggs and is long lived.

There was also an increase in distance between the testes and the rest of the internal organs due anatlmia the elongation of the post-vesicular deferent ducts, increased melliifera of accessory gland secretion, and a spermatozoa releasing closer to the ejaculatory ducts. Alternatively, the remainder of the ruptured male genitalia in the female tract may anatomix as a plug. 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.


The male reproductive apparatus of most insects possesses accessory glands, the mesadenial or ectadenial glands, which open at the deferent ducts or at the ejaculatory duct, respectively SnodgrassChapman X-L’appareil reproducteur du male.

The male sexual organs: Therefore, in newly emerged adults, the testes are already undergoing degeneration, appearing as yellowish flat bodies Snodgrass After removing the genital organs in saline solution, these were schematized under a stereomicroscope with aid of a Zeiss Winkle mellidera lucida.

Trabajos sobre Anatomía

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. 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.

Four different types of MRA were found. Mate number, kin selection and social conflicts in stingless bees and honeybees.

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. The seminiferous tubules are separated from one another by interstitial tissue; and individually encapsulated by a peritoneal membrane. 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.

The embryology of the honey bee. Abdalla I ; Warwick E. Anatomy and physiology of the honey bee. Yet it is only around the 12 th day of adult life that a drone is mature for mating Snodgrasswhen all the spermatozoa is contained in the seminal vesicles and ready to be ejected in the female during mating Bishop Baltimore, The John Hopkins Univ.

In Xylocopacontrary to the observed in the other genera, anatomiaa seminiferous tubules are straight and short, unfolded. Ultrastructure of the ducts of the reproductive kellifera of males of Melipona bicolor Lepeletier Hymenoptera, Apidae, Meliponini. The MRA of A. 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.


The internal genital organs of males of 51 bee species, belonging to six families, were studied Table 1. In Apis mellifera L. Fertilization in the honeybee. The species were identified by Prof. 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.

The functional morphology and biochemistry of insect male accessory glands and their secretions. It is characterized by very long post-vesicular deferent ducts that are located outside the scrotal membrane Fig.

Protein content and pattern during mucus gland maturation and its ecdysteroid control in honey bee drones. This condition may be related and compensated by the continued spermatogenesis that extends into the adult life stage. The remaining internal organs of the MRA, except mdllifera the ejaculatory duct and the accessory glands, also form a globular unit encapsulated by the scrotal membrane, which may be elongated Fig.

Therefore, it was done a comparative anatomical study of the internal genital organs of adult males of 51 bee species. In the Megachilidae and Melittidae, these ducts may open at the same site as seen in the Apidae Figs.

The testes are formed by a variable number of solid filaments, known as seminiferous tubules. Anwtomia ejaculatory duct is thicker, and, in some species, it may even present a complex pattern, such as longitudinal fissures Figs. 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. Accessory gland, genitalia, morphology.

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