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sistema reprodutor masculino histologia pdf
Mating strategies and spermiogenesis in ixodid ticks. It is conspicuous the likeness reprofutor the images in all photographs and this fact discards the possibility of being a histological technic artifact. Schneider I, Rudinsky JA.
Histologic technic and practical histochemistry methods. Recibido ; Aceptado These two appendices have been also described in other ticks and are characteristic of Ixodidae, whereas in Argasidae, there is only one Cells very similar to the epithelial ones form the pedicels.
Pedicel cells holding oocytes I and II stages are cylindric with large elliptic nuclei occupying most of the cytoplasm, there are numerous round mitochondria repeodutor well as rough endoplasmic reticulum, instead, pedicel cells attaching oocytes IV and V show signs of degeneration Spermatids suffer a capacitation inside the seminal receptacle in order to complete maturation; already mature cells are called spermiophores Fig.
An anatomical view of one of TAG is shown in Fig. In the present paper, the general objective is to consider the female genital masculinno of this tick as a whole and to analyze the morphological and functional interrelations between different structures.
sistema reprodutor masculino histologia pdf – PDF Files
In their lumens we could notice masses of cells that will originate spermatozoids. Figure 2 represents the same scheme 1 with vertical lines demarcating zones, in order to guide readers on the approximate location of a number of serial cuts. The male bends its capitulum toward the female genital aperture and then introduces its chelicerae which protrude out of its shafts into the female genital pore 18,19, 20 ; both hypostome and palps briefly touch the surface of the female, receptors on the palps mediate pheromone perception, these sensilla are concentrated on the fourth segment of the palp on hard ticks Ann Entomol Soc Amer.
Copula and semen transport Male climbs over the back of the female and then slide down beneath the couple looking for the genital pore 18,19 and put itself venter to venter with the female, grasping it with its legs Fig.
The wax coat waterproofs the eggs and causes them to stick together 17 forming huge masses that also contribute to retard desiccation.
Sistema reprodutor masculino
Central structures of female genital system Oviducts: Oxford, ; pp. On the contrary, in B.
Functional analysis of metabolic and imnune proteins in the tick Ixodes ricinus by RNA interference. The functional anatomy and histology of the reproductive system of some pilid gastropod molluscs. Unfed and partially engorged females of B. Morphological characterization of the ovary and vitellogenesis dynamics in the tick Amblyomma cajennense Acari: Amblyomma triste Koch, Acari: Morphological, histological, and ultrastructural studies of the ovary of the cattle-tick Boophilus microplus Canestrini, Acari: Feldman-Musham B, Borut S.
It is a paired structure formed by globular or reprpdutor like sacs sometimes called horns and glandular tissue. New histochemical and morphological findings in the female genital tract of Boophilus microplus Acari, Ixodidae: The male copulatory organs result of transformations that take place in the inner surface on the palial membrane.
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. Assuring paternity in a promiscuous world: A seminal receptacle, absent in argasids 3,4 as well as the uterus, open also in the cervical vagina.
Rev cub Cienc agric.
Also, the degenerative stage VI has been described 5, Histological and dissection Techniques: