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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Number of spermatozoa per cyst.

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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. Comparative anatomy of the male reproductive internal organs of 51 species of bees. Yet it is only around the 12 th day of apiss life that a drone is mature for mellitera Snodgrasswhen all the spermatozoa is contained in the seminal vesicles and ready to be ejected in the female during mating Bishop The species were identified by Prof.

A thicker ejaculatory duct allows a higher adhesion to the female during copulation, in addition, the secretion of the accessory glands increases even more the diameter of the ejaculatory duct at the moment of mating and might serve, as in Bombusas a plug that prevents the reflux of sperm or even improves the viability of the sperm posterior to mating BishopSnodgrass A Drosophila male accessory gland protein that is member of the Serpin superfamily of proteinase inhibitors is transferred to females during mating.

The seminiferous tubules are separated from one another by interstitial tissue; and individually encapsulated by a peritoneal membrane. Pupae of males of Scaptotrigona postica Latreille, Melipona quadrifasciata Lepeletier, and Tetragonisca angustula Latreille were also analyzed.


Contrary to the solitary bees, however, the meliponine queen produces a much higher number of eggs and is long lived. Mate number, kin selection mellifwra social conflicts in stingless bees and honeybees. It is characterized by very long post-vesicular deferent ducts that are located outside the scrotal membrane Fig. 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.

The function of the accessory glands is not well known in bees. After removing the genital organs in saline solution, these were schematized under a stereomicroscope with aid of a Zeiss Winkle camara lucida. Alternatively, the remainder of the ruptured male genitalia in the female qpis may function as a plug.

Meliponines are also similar to solitary bees in the sense that they mass provision their brood cells before oviposition and then immediately seal the alveoli Zucchi et al.

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.

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 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. Accessory gland, genitalia, morphology. Thre reproductive behavior of Anthidium maculosum Hymenoptera: Mellifeta, in newly emerged adults, the testes are already undergoing degeneration, appearing as yellowish flat bodies Snodgrass Accessory glands are well developed, and the ejaculatory duct is thickened with fissures in anstomia wall, which may also occur in the type II.

Trabajos sobre Anatomía

It is characterized by a very high number of seminiferous tubules, about per testis Louveaux The male reproductive apparatus MRA of insects is constituted by a pair of testes connected to aedeagus through the genital ducts. 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.


Type IV is similar to Type I, but it is only found melliferz all meliponines studied. The accessory gland loops can be developed Fig. 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. 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.

In Melliteracontrary to the observed in the other genera, the seminiferous tubules are straight and short, unfolded.

All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. The bees of the world. The testes are formed by a variable number of solid filaments, known as seminiferous tubules.

In solitary species, such as Anthidium maculosum L. The male sexual organs: In Apis mellifera L. In this species, as in most insects, spermatogenesis occurs during the pupal mellifra, and the testes display their maximum development between the 5 th and the 6 th day of pupation Bishop The MRA of A.

Megachilidae and evolutionary significance of multiple copulations by females. Type IV is present exclusively apsi the tribe Meliponini, and is characterized by the absence of accessory glands.