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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Therefore, in newly emerged adults, the testes are already undergoing degeneration, appearing as yellowish flat bodies Snodgrass Melifera 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, increased production of accessory gland secretion, and a spermatozoa releasing closer to the ejaculatory ducts. 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.
The accessory glands are well developed Fig. Number of spermatozoa per cyst. Next, there is a displacement of the opening site of the post-vesicular duct, tending apls be nearer the ejaculatory duct, as well as an increase in the length and diameter of the ejaculatory duct. It is characterized by very long post-vesicular deferent ducts that are located outside the scrotal membrane 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.
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.
After removing the genital organs in saline solution, these were schematized under a stereomicroscope with aid of a Zeiss Winkle camara lucida. Their histological structures and physiological functioning. The MRA of A. It is characterized mellitera a very high number of seminiferous tubules, about per testis Louveaux The remaining internal organs of the MRA, except for the ejaculatory duct and the accessory glands, also form a globular unit encapsulated by the scrotal membrane, which may be elongated Fig.
X-L’appareil reproducteur du male. In Apis mellifera L.
Literature Cited Alcock, J. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. The second modification was an increase in the number of seminiferous tubules per testis, or their widening, as well as an elongation of the post-vesicular deferent ducts.
Protein content and pattern during mucus gland maturation and its ecdysteroid control in honey bee drones. 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. In the Apidae with MRA of the Type II, the seminal mellifsra 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.
On the cell provisioning and oviposition POP of the stingless bees nomenclature reappraisal and evolutionary considerations Hymenoptera, Apidae, Meliponine.
Thre reproductive behavior of Anthidium maculosum Hymenoptera: The bees of the world. Each contains one testis and one seminal vesicle Fig. Alternatively, the remainder of the ruptured male genitalia in the female tract may function as a plug.
The melifera 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 Accessory gland, genitalia, morphology.
Apparently the tendency of the male reproductive tract of bees was towards an increase in number and length of the seminiferous tubules, emllifera must have resulted in an increased number of spermatozoa production. The testes are formed by a variable number of solid filaments, known as seminiferous tubules. There are few comparative studies concerning to the male reproductive apparatus in bees, especially on solitary and stingless species.
Mate number, kin selection and social conflicts in stingless bees and honeybees. The seminiferous tubules are mellifra from one another by interstitial tissue; and individually encapsulated by a peritoneal membrane. Inside these tubules, spermatogenesis proceeds in synchrony within the cysts.
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. Baltimore, The John Hopkins Univ. In the Megachilidae there are three seminiferous tubules per testis Fig. 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. In solitary species, such as Anthidium maculosum L.
Therefore, it was done a comparative anatomical study of the internal genital organs of adult males of 51 bee species. 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.
Abdalla I ; Warwick E. The function of the accessory glands is not well known in bees. The male sexual organs: All the specimens were adults, except for the species Scaptotrigona postica Latreille, Melipona quadrifasciata Lepeletier and Tetragonisca angustula Latreille.
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. In the rest of their characteristics however, they share anatomical elements with Type I, such as those present in Colletidae, which have very filiform accessory glands with a very small dilation portion.
The meliponines differ from the other bees by the loss of the accessory glands. It is characterized by testes, seminal vesicles, and genital ducts totally or almost encapsulated by the scrotal membrane, and forming a globular unit Fig. The tubules are enveloped, as a group, by a scrotal membrane or capsule, forming a globular structure Cruz-Landim In the Type III, the seminal vesicles are easily distinguishable from the deferent ducts by being longer and thicker and because they are folded inside the scrotal membrane, forming a globular unit Fig.