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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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. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. The apks 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 Yet it is only around the 12 th day of adult life that a drone is mature for mating Apiewhen all the spermatozoa is contained in the seminal vesicles and ready to be ejected in the female during mating Bishop The male sexual organs: Meliponines are also similar to melilfera bees in the sense that they mass provision their brood cells before oviposition and then immediately seal the alveoli Zucchi et al.
Alternatively, the remainder of the ruptured male genitalia in the female tract may function as a naatomia. There are few comparative studies concerning to the male reproductive apparatus in bees, especially on solitary and stingless species. In the Megachilidae there are three seminiferous tubules per testis Fig. It is characterized by very long post-vesicular deferent ducts that are located outside anatomka scrotal membrane Fig.
The tubules are mellifeera, as a group, by a scrotal membrane or capsule, forming a globular structure Cruz-Landim Material and Methods The internal genital organs of males of 51 bee species, belonging to six families, were studied Table 1. In solitary species, such as Anthidium maculosum L.
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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 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. Thin and short prolongations, known as efferent ducts, arise from the extremity of each seminiferous anatomiaa 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.
Next, there is a displacement of the opening site of the post-vesicular duct, tending to be nearer the ejaculatory duct, as well mmellifera an increase in the length and diameter of the ejaculatory duct. In this type, the accessory glands are generally well developed Figs. 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.
In the Megachilidae and Melittidae, these ducts may open at the same site as seen in the Apidae Figs. In Apis mellifera L.
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The accessory glands are well developed Fig. Whereas the tendency in the other families is towards a higher development of the accessory glands, separation of the units encapsulated by the scrotal membrane and an increase sizing and complexity of the ejaculatory duct, the meliponines are characterized by the disappearance of the accessory glands and a general simplification of the genital ducts, including the outer genitalia.
After removing the genital organs in saline solution, these were schematized under a stereomicroscope with aid of a Zeiss Winkle camara lucida. It is characterized by testes, seminal vesicles, and genital ducts totally or almost encapsulated by the scrotal membrane, and forming a globular unit Fig.
Mate number, kin selection and social conflicts in stingless bees and honeybees. 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 similarity of the MRA of meliponines to that of the basal solitary bees is not the only similarity between these two groups of bees. On the cell provisioning and oviposition POP of the stingless bees nomenclature reappraisal and evolutionary considerations Hymenoptera, Apidae, Meliponine.
The testes are formed by a variable number of solid filaments, known as seminiferous tubules.
All the specimens were adults, except for the species Scaptotrigona postica Latreille, Melipona quadrifasciata Lepeletier and Tetragonisca angustula Latreille. The post-vesicular deferent ducts are joined and open directly at the ejaculatory duct, which is short and simple Fig. Number of spermatozoa per cyst. After this period, the number of protein bands in electrophoretic gels reduce, when at eight days old drones is present only three dominant polypeptides.
How to cite this article. The accessory gland loops can be developed Fig. Literature Cited Alcock, J. Comparative anatomy of the male reproductive internal organs of 51 species of bees. Accessory glands are well developed, and the ejaculatory duct is thickened with fissures in its wall, which may also occur in anatomua type II.
Thre reproductive behavior of Anthidium maculosum Hymenoptera: The greater melpifera of the seminal anaatomia may be an adaptation to the increase in the number and length of the seminiferous tubules and the absence of the accessory anatoomia in stingless bees.
Contrary to the solitary bees, however, the meliponine queen produces a much higher number of eggs and is long lived.
Comparative anatomy of the male reproductive internal organs of 51 species of bees
The male reproductive apparatus MRA of insects is constituted by a pair of testes anqtomia to aedeagus through the genital ducts. 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.
Type IV is present exclusively in the tribe Meliponini, and is characterized by the absence of accessory glands. Services on Demand Journal. With the exception of Xylocapa Fig. The ejaculatory duct is thicker, and, in some species, it may even present a complex pattern, such as longitudinal fissures Figs. 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 anatomiaa 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 The results allowed separating the 51 species of bees studied into at least four types of organization of the melliffra reproductive apparatus Meolifera.
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 mellkfera be elongated Fig. Avenida Engenheiro Diniz n o.