Ejaculation and spermatophore formation in Culicoides melleus (Coq.) (Diptera: Ceratopogonidae)

1981 ◽  
Vol 59 (3) ◽  
pp. 332-346 ◽  
Author(s):  
J. R. Linley
Keyword(s):  
Electron Micrographs ◽  
Male Genitalia ◽  
Accessory Gland ◽  
Seminal Vesicles ◽  
Sperm Transfer ◽  
Male Accessory Gland ◽  
Male And Female ◽  
Membrane Complex

This paper describes the initial stages of sperm transfer in Culicoides melleus. A description of the male and female reproductive tracts is given and an account of events during the first 2 min of coitus. In this period the male secretes a spermatophore, which, during copulation, is held predominantly in the male genitalia. The course of ejaculation, involving passage of spermatozoa through the seminal vesicles and glutinous glands of the male accessory gland, and subsequently through the ejaculatory ducts, is described. Extrusion of the spermatophore at the aedeagus is illustrated and an explanation advanced to account for encapsulation of the sperm masses. The structure and content of the spermatophore is described with the aid of electron micrographs. A feature of particular interest is the "membrane complex," secreted prior to ejaculation by cells of the glutinous glands. The complex consists of a layer of membranes, which separates the ejaculate from the spermatophore walls.

scholarly journals HumanPapilloma VirusInfection in Patients with Male Accessory Gland Infection: Usefulness of the Ultrasound Evaluation

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Rosita A. Condorelli ◽  
Enzo Vicari ◽  
Laura M. Mongioi ◽  
Giorgio I. Russo ◽  
Giuseppe Morgia ◽  
...  
Keyword(s):  
Seminal Fluid ◽  
Hpv Infection ◽  
Accessory Gland ◽  
Seminal Vesicles ◽  
The Other ◽  
Male Accessory Gland ◽  
Papilloma Virus ◽  
Progressive Motility ◽  
Ultrasound Evaluation ◽  
Fluid Concentration

This study evaluated the ultrasound (US) features of 20 patients with MAGI and concomitantpapilloma virus(HPV) infection compared to 20 patients with microbial (presence ofChlamydia trachomatisalone) MAGI and 20 patients with amicrobial (inflammatory) MAGI. Patients with HPV infection showed significantly (p<0.05) higher total prostate, seminal vesicles, and epididymal US signs (18.0 ± 2.0) compared to the other 2 groups (12.0 ± 4.0 versus 10.0 ± 3.0, resp.). In addition, patients with MAGI and HPV had a higher prevalence of complicated forms of MAGI [prostatovesiculitis (PV) and prostate-vesiculo-epididymitis (PVE)] and a higher frequency of the fibrosclerotic variant compared to the other groups (70.0 ± 10.0% versus 48.0 ± 5.0% versus 15.0 ± 10.0%). Moreover, HPV infected patients had a higher number of US criteria suggestive for MAGI in the periurethral region of the prostate compared to the other groups. In particular, the patients showed a higher ratio between periurethral and lobar US criteria distribution (5.0 versus 0.5). Finally, the seminal fluid concentration ofCD45posleukocytes (2.0 ± 0.2 versus 1.3 ± 0.3 versus 1.0 ± 0.3 mil/mL) was significantly higher and sperm progressive motility was significantly lower in these patients compared to other groups.

Male accessory gland inflammation (MAGI): an evolving entity

2021 ◽  
pp. 205141582098768
Author(s):  
Hosam A. Noweir ◽  
Vaibhav Modgil ◽  
Ian Pearce
Keyword(s):  
Prostate Gland ◽  
Accessory Gland ◽  
Seminal Vesicles ◽  
Special Focus ◽  
Male Accessory Gland ◽  
Ductus Deferens ◽  
Inflammatory Conditions ◽  
Research Findings ◽  
Chronic Course

Male accessory gland infection (MAGI) is a generic acronym indicating inflammatory conditions affecting the prostate gland, seminal vesicles, the ductus deferens and the epididymis. It is a frequent disease, mostly with a chronic course. Majority of the MAGIs remain asymptomatic, thereby leading to a debate whether to treat these patients or not. The primary criterion for MAGI was suggested by Comhaire and colleagues in 1980. The role of MAGI in causing infertility and sexual dysfunctions has long been a matter of debate. The most recent studies show that MAGI could alter, with various mechanisms, both conventional and biofunctional sperm parameters, and determine worst reproductive outcome. This article provides an overview of up-to-date research findings about MAGI with special focus on data published on its impact on fertility; and diagnostic criteria including cellular and seminal biomarkers along with the promising results of emerging proteomic platforms for the identification of MAGI.

The structure, formation, histochemistry, fate, and functions of the spermatophore of Lytta nuttalli Say (Coleoptera: Meloidae)

1971 ◽  
Vol 49 (12) ◽  
pp. 1595-1610 ◽  
Author(s):  
G. H. Gerber ◽  
N. S. Church ◽  
J. G. Rempel
Keyword(s):  
Tube Wall ◽  
Anterior Part ◽  
Posterior Part ◽  
Accessory Gland ◽  
Male Accessory Gland ◽  
Male And Female ◽  
Male Accessory Glands ◽  
Accessory Glands ◽  
Sequence Of Events ◽  
Probable Form

The spermatophore of Lytta nuttalli consists of a unique tubular structure and a mass of jelly-like material (JLM). The spermatozoa are located in the JLM at its junction with the tube. The tube wall is composed of three layers of "histochemically" different substances produced by the first pair of male accessory glands. The JLM is secreted by the vasa deferentia. During copulation, usually of 8 to 10 h duration, the tube is molded and hardened in the vagina and posterior part of the spermatophoral receptacle duct and the JLM in the anterior part of the duct. The tube of the spermatophore serves as an intromittent "organ" in the absence of an internal penial sac. The sequence of events in spermatophore formation and the roles of the materials from the second and third pairs of male accessory glands are described. After copulation, usually within 2 h, the tube is ejected by the female. Within 24 h after copulation, most of the spermatozoa are transferred to the spermatheca. The secretion of the female accessory gland apparently is involved in this process. The JLM and third male accessory gland materials are retained in the spermatophoral receptacle and apparently are absorbed. The histochemical composition of the male and female secretions and the components of the spermatophore and the cytology and secretory cycles of the glands are described. The spermatophore of L. nuttalli is compared with those of other insects and the probable form of the spermatophore in other Meloidae is considered.

REVIEW OF NEARCTIC APOTOMIS HÜBNER (LEPIDOPTERA: TORTRICIDAE: OLETHREUTINI)

1986 ◽  
Vol 118 (7) ◽  
pp. 649-689 ◽  
Author(s):  
D. Adamski ◽  
T. Michael Peters
Keyword(s):  
Electron Micrographs ◽  
Male Genitalia ◽  
Female Genitalia ◽  
Scanning Electron Micrographs ◽  
Key To Species ◽  
Male And Female ◽  
Distribution Maps ◽  
New Synonym ◽  
Wing Patterns ◽  
Scanning Electron

AbstractA review of Nearctic Apotomis Hübner (Lepidoptera: Tortricidae: Olethreutini) is presented. Seventeen species are recognized, of which the following are new: coloradensis, trifida, and spurinfida. Apotomis strigosa Heinrich, 1926 is considered a new synonym of tertiana McDunnough, 1922, and dextrana McDunnough, 1923 of removana Kearfott, 1907. Descriptions, distribution maps, and a key to species are provided. Illustrations of male and female genitalia and photographs of distinctive wing patterns are included. Scanning electron micrographs reveal that setae on digitus of male genitalia are taxonomically important.

Autogeny in saltmarsh mosquitoes induced by a substance from the male accessory gland

Nature ◽  
1977 ◽  
Vol 267 (5609) ◽  
pp. 342-344 ◽  
Author(s):  
GEORGE F. O'MEARA ◽  
DAVID G. EVANS
Keyword(s):  
Accessory Gland ◽  
Male Accessory Gland

scholarly journals Ultrasound aspects of symptomatic versus asymptomatic forms of male accessory gland inflammation

Andrology ◽  
2021 ◽  
Author(s):  
Sandro La Vignera ◽  
Andrea Crafa ◽  
Rosita A. Condorelli ◽  
Federica Barbagallo ◽  
Laura M. Mongioì ◽  
...  
Keyword(s):  
Accessory Gland ◽  
Male Accessory Gland
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