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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The greater development of the seminal vesicles may anatojia an adaptation to the increase in the number and length of the seminiferous tubules and the absence of the accessory glands in stingless bees.

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 aips 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 Apidae with MRA of the Type II, the seminal vesicles 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 aatomia the ejaculatory duct Figs. The male sexual organs: In solitary species, such as Anthidium maculosum L.

Material and Methods The internal genital organs of males of 51 bee species, belonging to six families, were studied Table 1. On the cell provisioning and oviposition POP of the stingless bees nomenclature reappraisal and evolutionary considerations Hymenoptera, Apidae, Meliponine.


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.

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 spermatozoa releasing closer to the ejaculatory ducts.

Services on Demand Journal. 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 meliponines differ from the other bees by the loss of the accessory glands.

The functional morphology and biochemistry of insect male accessory glands and their secretions. 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.

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Trabajos sobre Anatomía

The MRA of A. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. 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 function of the accessory glands is not well known in bees. A Drosophila male accessory gland protein that is member of the Serpin superfamily of proteinase inhibitors is transferred to females during mating.

The ejaculatory duct is thicker, and, in some species, it may even present a complex pattern, such as longitudinal fissures Figs. With the exception of Xylocapa Fig. The bees of the world. 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.


Their histological structures and physiological functioning. Four different types of MRA were found. 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

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. In all species, two portions compose the accessory gland: Comparative anatomy of the male reproductive internal organs ajatomia 51 species of bees.

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 remaining internal organs of the MRA, except anatomua the ejaculatory duct and the accessory glands, also form a globular unit encapsulated by the scrotal membrane, which may be elongated Fig.

Abdalla Meplifera ; Warwick E. The post-vesicular deferent ducts are joined and open directly at the ejaculatory duct, which is short and simple Fig. The male reproductive apparatus MRA of insects is constituted by a pair of testes connected to aedeagus through the genital ducts.