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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This condition may be related and compensated by the continued spermatogenesis that extends into the adult life stage. It is characterized by testes, seminal vesicles, and genital ducts totally or almost encapsulated by the scrotal membrane, and forming a globular unit Fig. Literature Cited Alcock, J. It is characterized by mellifera absence of the accessory glands and apsi seminal vesicles that is much thicker than the deferent ducts Fig.
X-L’appareil reproducteur du male. The male reproductive apparatus of most insects possesses accessory glands, the mesadenial apix ectadenial glands, which open at the deferent ducts or at the ejaculatory duct, respectively SnodgrassChapman 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.
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Since mating has an effect on vitellogenesis, or on the maturation of oocytes in the ovary of insects ChenColeman et al. 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. 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.
The testes are formed by a variable number of solid filaments, known as seminiferous tubules. The ejaculatory duct is thicker, and, in some species, it may even present a complex pattern, such as longitudinal fissures Figs. A Drosophila male accessory gland protein that is member of the Serpin superfamily of proteinase inhibitors is transferred to females during mating. Number of spermatozoa per cyst.
It is characterized by very long post-vesicular deferent ducts that are located outside the scrotal membrane Fig. As in type II, the post-vesicular deferent ducts are not encapsulated. The function of the accessory glands is not well known in 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.
In Xylocopacontrary to the observed in the other genera, the seminiferous tubules are straight and short, unfolded. Mate number, kin selection and social conflicts in stingless bees and honeybees. The post-vesicular deferent ducts are joined and open directly at the ejaculatory duct, which is short and simple Fig. The embryology of the honey bee.
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 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 functional morphology and biochemistry of insect male accessory glands and their secretions. With the exception of Xylocapa Fig. Avenida Engenheiro Diniz n o.
Material and Methods The internal genital organs of males of 51 bee species, belonging to six families, were studied Table 1. Type III was only found in the Apidae studied and is characterized by separately encapsulated testes and mellifrra ducts except for the post-vesicular deferent duct.
Inside these tubules, spermatogenesis proceeds in synchrony within the cysts. As in most solitary species, the queens of meliponines seem to mate with a single male Peters et al.
Services on Demand Journal. The meliponines differ from the other bees by the loss of the accessory glands. 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. After removing the genital organs in saline solution, these were schematized under a stereomicroscope with aid of a Zeiss Winkle camara lucida. Abdalla I ; Warwick E.
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Each contains one testis and one seminal vesicle Fig. In all species, two portions compose the accessory gland: Organization of the cysts in bees Hymenoptera, Apidae testis: On the cell provisioning and oviposition POP of the stingless bees nomenclature reappraisal and evolutionary considerations Hymenoptera, Apidae, Meliponine. Megachilidae and evolutionary significance of multiple copulations by females.
Fertilization in the honeybee. Alternatively, the remainder of the ruptured male genitalia in the female tract may function as a plug. There 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 nellifera releasing closer to the ejaculatory ducts.
In Apis mellifera L.
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. Baltimore, The John Hopkins Univ.
The bees of the world. In this type, the accessory glands are generally well developed 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 anatkmia.
Whereas the tendency in the other families anatomis 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.
In the Megachilidae and Melittidae, these ducts may open at the abatomia site as seen in the Apidae Figs.
wpis Contrary to the solitary bees, however, the meliponine queen produces a much higher number of eggs and is long lived. In the Megachilidae there are three seminiferous tubules per testis Fig. Therefore, it was done a comparative anatomical study of the internal genital organs of adult males of 51 bee species.