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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In Apis mellifera L. This condition may be related and compensated by the continued spermatogenesis that extends into the adult life stage. The bees of the world. In this species, as in most insects, spermatogenesis occurs during the pupal stage, and the testes display their maximum development between the 5 th and the 6 th day of pupation Bishop As in apiss solitary species, the queens of meliponines seem to mate with a single male Peters et al.
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.
A thicker ejaculatory duct allows a higher adhesion to the female during copulation, in addition, anatlmia 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 The ejaculatory duct is thicker, and, in some species, it may even present a complex pattern, such as longitudinal fissures Figs.
Four different types of MRA were found. This later portion usually presents anatomic variation among the species. The tubules are enveloped, as a group, by a scrotal membrane or capsule, forming a globular structure Cruz-Landim 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 accessory gland loops can be developed Fig.
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. Apparently the tendency of the male reproductive tract of bees was towards an increase in number and length of the seminiferous tubules, which must have resulted in an increased number of spermatozoa production.
The greater development of anaomia 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 glands are well developed, and the ejaculatory duct is thickened with fissures in its wall, which may also occur in the type II.
Aspectos morfológicos e anatómicos da abelha Apis mellifera. by Andreia Sampaio on Prezi
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. The functional morphology and biochemistry of insect male accessory glands and their secretions.
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 results allowed separating the 51 species of bees studied into at least four types of organization of the male reproductive apparatus MRA. 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 species were identified by Prof. As in type II, ais post-vesicular deferent ducts are not encapsulated. A Drosophila male accessory gland protein that is member of the Serpin superfamily of proteinase inhibitors is transferred to females during mating. Since mating has an effect on vitellogenesis, or on the maturation of oocytes in the ovary of insects ChenColeman et al.
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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. Therefore, in newly emerged adults, the testes are already undergoing degeneration, appearing as yellowish flat bodies Snodgrass Type IV is present exclusively in the tribe Meliponini, and is characterized by the anatlmia of accessory glands.
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.
On the abatomia provisioning and oviposition POP of the stingless bees nomenclature reappraisal and evolutionary considerations Hymenoptera, Apidae, Meliponine. Baltimore, The John Hopkins Univ. Excluding the meliponines, and considering Type I as the ground plan of MRA, the first major modification of the MRA was the increased development of the accessory gland, which can already be observed in some representatives with Type I.
Material and Methods The internal genital organs of males of 51 bee species, belonging to six families, were studied Table melpifera. In the Megachilidae and Melittidae, these ducts may open at the same site as seen in the Apidae Figs. How to cite this article. The seminiferous tubules are separated from one another by interstitial tissue; and individually encapsulated by a peritoneal membrane.
Comparative anatomy of the male reproductive internal organs of 51 species of bees
The male reproductive zpis of most insects possesses accessory glands, the mesadenial or ectadenial glands, which open at the deferent ducts or at the ejaculatory duct, respectively SnodgrassChapman The embryology of apus honey bee.
The post-vesicular deferent ducts are joined and open directly at the ejaculatory duct, which is short and simple Fig. All the specimens were adults, except for the species Scaptotrigona postica Latreille, Melipona quadrifasciata Lepeletier and Tetragonisca angustula Latreille.
The accessory glands are well developed Fig.
It is characterized by testes, seminal vesicles, and genital ducts totally or almost encapsulated by the scrotal membrane, and forming a globular mellifer Fig. Fertilization in the honeybee. Organization of the cysts in bees Hymenoptera, Apidae testis: It is characterized by a very high number of seminiferous tubules, about per testis Louveaux Their histological structures and physiological functioning.