Fine Structure of the Vasa Deferentia, Seminal Vesicle, Ejaculatory Duct, And Accessory Gland of Male Ornithodoros (Pavlovskyella) Erraticus (Acari: Ixodoidea: Argasidae)

1987 ◽  
Vol 24 (2) ◽  
pp. 235-242 ◽  
Author(s):  
Samir M. El Shoura
Keyword(s):  
Fine Structure ◽  
Seminal Vesicle ◽  
Ejaculatory Duct ◽  
Accessory Gland

THE REPRODUCTIVE ORGANS OF THE VELVET MITE, ALLOTHROMBIUM LEROUXI (TROMBIDIFORMES: TROMBIDIIDAE)

1970 ◽  
Vol 102 (2) ◽  
pp. 144-157 ◽  
Author(s):  
S. N. Mathur ◽  
E. J. LeRoux
Keyword(s):  
Seminal Vesicle ◽  
Ejaculatory Duct ◽  
Reproductive Organs ◽  
Accessory Gland ◽  
Male And Female ◽  
Accessory Glands ◽  
Receptaculum Seminis ◽  
Female Reproductive Organs

AbstractThe anatomy and functions of the male and female reproductive organs of Allothrombium lerouxi Moss are described in detail. In the male, the reproductive organs consist of paired testes, paired vasa diferentia, a median seminal vesicle, a median ejaculatory duct, bursa expulsatoria, a penis, and a median accessory gland; in the female, they consist of paired ovaries, paired oviducts, a median uterus and a vagina. The function of the parts in the male differs from that reported in other species of Trombidiformes, and in females fertilization takes place in the spongy epithelium of the uterus instead of in the oviducts as in oribatids. Females also lack a receptaculum seminis and accessory glands.

scholarly journals Positional Relationships among Male Reproductive Organs in Insects

2021 ◽  
Author(s):  
Satoshi Hiroyoshi ◽  
Gadi V.P. Reddy
Keyword(s):  
Seminal Vesicle ◽  
Vas Deferens ◽  
Ejaculatory Duct ◽  
Reproductive Organs ◽  
Accessory Gland ◽  
Morphological Development ◽  
Lepidopteran Insects ◽  
Other Substances ◽  
Male Reproductive Organs ◽  
And Function

The location, morphology and function of male internal reproductive organs in insects have been extensively studied, but the relative positioning of those organs is less understood. Position and morphology of the testis, vas deferens, seminal vesicle, accessory gland and ejaculatory duct determine the migration or ejaculation of sperm and other substances. In species where the testis is connected with the seminal vesicle directly or the seminal vesicle is lacking, males usually store complete sperm in the testis and thus can use them immediately for mating. In contrast, the testis of lepidopteran insects is separated from the duplex (sperm storage organ) via the vas deferens, and the sperm are not mature, requiring morphological development in the vas deferens. Here, we discuss the significance of various positional relationships of male reproductive organs and how this relates to their morphology and function with a focus on sperm.

scholarly journals The Male Reproductive Structure and Spermatogenesis of Trypophloeus Klimeschi Eggers (Coleoptera: Curculionidae: Scolytinae)

2019 ◽  
Author(s):  
Jing Gao ◽  
Guanqun Gao ◽  
Lulu Dai ◽  
Jiaxing Wang ◽  
Hui Chen
Keyword(s):  
Seminal Vesicle ◽  
Reproductive Tract ◽  
Vas Deferens ◽  
Ejaculatory Duct ◽  
Reproductive Organ ◽  
Accessory Gland ◽  
Male Reproductive Tract ◽  
Short Branch ◽  
Male Reproductive Organ ◽  
Dense Band

Abstract Background Trypophloeus Klimeschi Eggers (Coleoptera: Curculionidae: Scolytinae) is one of the most destructive pests of Populus alba var. pyramidalis (Bunge), resulting in significant losses in economic, ecological and social benefits in China’s northwest shelter forest. But research of reproductive system, spermiogenesis and spermatozoon ultrastructure of T. klimeschi that is basis of phylogeny, reproductive biology and controlling is still black. Results The male reproductive organ of T. klimeschi is composed of testis, seminal vesicle, strand shaped accessory gland containing long branch of strand shaped accessory gland and short branch of strand shaped accessory gland, curly accessory gland, vas deferens and a common ejaculatory duct. The number of sperm per cyst is 350~512. Its spermatozoon is slender, measuring about 75 μm in length and 0.5 μm in wide and composed of a 3-layred acrosomal complex, a nucleus with two different states of aggregation, two mitochondrial derivatives with dark crystal, a 9+9+2 axoneme that run more or less parallel to mitochondrial derivatives, two crystalline accessory bodies with a big compact “puff”-like expansion. Especially in the seminal vesicle, its long flagella folded into several turns and the whole sperm is wrapped in a film.Conclusion The general morphology of male reproductive tract, the spermatogenesis and the spermatozoa of T. klimeschi are, for the most part, similar to the majority of the Curculionidae. However, some distinct differences were found: the low electron-dense band in the cytoplasm of spermatocytes; two different aggregation states of spermatozoon nucleus; especially the stored way of T. klimeschi spermatozoa.

Fine structure and possible functions of the hermaphrodite duct of some pulmonate snails (Mollusca: Gastropoda)

1990 ◽  
Vol 48 (3) ◽  
pp. 68-69
Author(s):  
Alan N. Hodgson
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Fine Structure ◽  
Seminal Vesicle ◽  
Reproductive Biology ◽  
Light Microscope ◽  
Light Microscope Level ◽  
Transmission Electron ◽  
Standard Techniques

The hermaphrodite duct of pulmonate snails connects the ovotestis to the fertilization pouch. The duct is typically divided into three zones; aproximal duct which leaves the ovotestis, the middle duct (seminal vesicle) and the distal ovotestis duct. The seminal vesicle forms the major portion of the duct and is thought to store sperm prior to copulation. In addition the duct may also play a role in sperm maturation and degredation. Although the structure of the seminal vesicle has been described for a number of snails at the light microscope level there appear to be only two descriptions of the ultrastructure of this tissue. Clearly if the role of the hermaphrodite duct in the reproductive biology of pulmonatesis to be understood, knowledge of its fine structure is required.Hermaphrodite ducts, both containing and lacking sperm, of species of the terrestrial pulmonate genera Sphincterochila, Levantina, and Helix and the marine pulmonate genus Siphonaria were prepared for transmission electron microscopy by standard techniques.

Zinner Syndrome with Ectopic Ureter Remnant

2021 ◽  
Vol 17 ◽  
Author(s):  
Ara Ko ◽  
Sung Bin Park ◽  
Hyun Jeong Park ◽  
Eun Sun Lee
Keyword(s):  
Seminal Vesicle ◽  
Ejaculatory Duct ◽  
Outlet Obstruction ◽  
Ectopic Ureter ◽  
Cystic Dilatation ◽  
Unilateral Renal Agenesis ◽  
Rare Congenital Abnormality ◽  
Mesonephric Duct ◽  
Clinical Triad ◽  
Ejaculatory Duct Obstruction

: Zinner syndrome is a rare congenital abnormality defined by a clinical triad of unilateral renal agenesis, ipsilateral seminal vesicle cyst, and ipsilateral ejaculatory duct obstruction. Most patients are asymptomatic, but if the cystic dilatation of the seminal vesicle becomes significant, it can result in urinary symptoms such as dysuria and urinary retention. This rare developmental anomaly related to the mesonephric duct can also present with other abnormalities. Here, we report our experience of Zinner syndrome with bladder outlet obstruction and an ectopic ureter remnant.

scholarly journals Long-Term Surveillance and Laparoscopic Management of Zinner Syndrome

2021 ◽  
Vol 2021 ◽  
pp. 1-4
Author(s):  
Niall P. Kelly ◽  
Adrian Fuentes-Bonachera ◽  
William P. Shields ◽  
Ivor M. Cullen ◽  
Padraig J. Daly
Keyword(s):  
Renal Transplant ◽  
Seminal Vesicle ◽  
Ejaculatory Duct ◽  
Treatment Strategies ◽  
Surgical Excision ◽  
Initial Diagnosis ◽  
Unilateral Renal Agenesis ◽  
Laparoscopic Management ◽  
Seminal Vesicle Cyst ◽  
Laparoscopic Excision

Zinner syndrome was first described in 1914 and represents the triad of unilateral renal agenesis and ipsilateral seminal vesicle cyst and ipsilateral ejaculatory duct obstruction. Seminal vesicle cysts are often asymptomatic but can also present with pain, haematospermia, or other lower urinary tract symptoms. Treatment strategies include observation and surgical excision. We present the laparoscopic management of an enlarged seminal vesicle cyst, consistent with Zinner syndrome, 14 years after the initial diagnosis. A 58-year-old male patient was diagnosed with a left-sided seminal vesicle cyst while undergoing assessment for renal transplant due to progressively worsening renal function in his solitary right kidney. The otherwise asymptomatic cyst enlarged from the time of initial diagnosis in 2004 ( 11.3   cm × 9.7   cm × 13.1   cm ) to nearly double the size in 2018 ( 12.8   cm × 11.9   cm × 14.2   cm ). This cyst size ultimately precluded renal transplant, and the patient was referred for excision. Laparoscopic excision of the cyst was performed, histopathology confirmed seminal vesicle cyst tissue, and there has been no recurrence of the cyst to date. The patient remains active on the renal transplant waitlist. Zinner syndrome is a rare syndrome, with the seminal vesicle cysts being managed by observation or surgical excision. We report the longest documented observation of a seminal vesicle cyst, culminating in a safe and successful laparoscopic excision.

Memoirs: The Morphology and Development of the Genitalia and Genital Ducts of Homoptera and Zygoptera as Shown in the Life Histories of Philaenus and Agrion

1928 ◽  
Vol s2-72 (287) ◽  
pp. 447-483
Author(s):  
C. J. GEORGE
Keyword(s):  
Anterior Part ◽  
Ejaculatory Duct ◽  
Accessory Gland ◽  
Posterior Region ◽  
Anterior Region ◽  
Vaginal Opening ◽  
Forward Region ◽  
Efferent System ◽  
Accessory Glands ◽  
The Common

1. In the male Philaenus and Agrion the vasa deferentia terminate on the ninth segment in the early stages. An ectodermal invagination from that segment joins them subsequently and thus the male gonopore is established. 2. The accessory glands develop in Philaenus male from the anterior end of the swollen extremities of the vasa deferentia and the vesiculae seminales from a still more forward region. 3. The accessory glands of the male are mesodermal in origin and not ectodermal as some authors state. 4. There is no evidence as to the existence of a ‘pair of ectodermal ejaculatory’ ducts either in Philaenus orin Agrion, and reasons are adduced to show that they do not exist at all in the higher Insecta. 5. In the female nymph of Philaenus the oviducts terminate on the seventh segment. They are subsequently joined by an ectodermal invagination from the seventh segment. The common oviduct is formed in two parts: the anterior part is derived from the posterior region of the invagination on the seventh and the posterior region is formed as a groove from the ectodermis of the eighth segment and subsequently this groove is converted into a tube. When the second part is completed it is in connexion with the invagination from the seventh and opens to the outside on the eighth segment. The ectodermal invagination from the seventh also gives rise to the spermatheca. A median accessory gland develops as an invagination from the ninth segment between the bases of the inner ovipositor lobes. A pair of accessory glands develop as paired imaginations from the anterior region of the ninth segment. 6. In the female nymph of Agrion the oviducts fuse to form a single duct and terminate in the middle of the eighth segment. Posteriorly an ectodermal invagination from the eighth segment meets this duct and lies in a position dorsal to it. Later on the ectodermal invagination develops a spermatheca dorsally and the mesodermal and the ectodermal ducts unite into one. The accessory glands develop as paired ectodermal invaginations from the anterior region of the ninth segment. 7. The female gonopore is not homologous in the different groups of insects. The vaginal opening in Orthoptera, Hymenoptera, Homoptera, Diptera, and Lepidoptera is homologous. The vaginal opening in Coleoptera is homologous with the oviducal opening of Lepidoptera, with the opening of the accessory gland of Homoptera, Hymenoptera, Diptera, Isoptera, and the opening of the spermatheca in some Orthoptera. 8. The common oviduct, being formed differently in the different groups is not homologous. The accessory organs, e. g. spermatheca, are not homologous in the different groups. 9. There is no evidence to show that the common oviduct is of paired origin. 10. The occurrence of a median accessory structure on the ninth segment which develops in the young as an invagination between the bases of the inner ovipositor lobes is very general in the higher Insecta. In some it functions as a gland, in others as a storehouse for spermatozoa. 11. The homology of the paired accessory glands is indicated. 12. The male genital ducts are not strictly homologous with those of the female. The homologue of the ejaculatory duct is the invagination from the ninth segment in the female. 13. The Odonata stand isolated in having a mesodermal region for the common oviduct and in the peculiar development of the two processes between the anterior ovipositor lobes. 14. The probable lines of evolution of the female efferent system in Insecta are indicated. The study of the development of the female efferent system indicates that the groups Orthoptera, Homoptera, Lepidoptera, and Diptera are very closely allied. Coleoptera seem to have had quite a different line of evolution from the above groups in this respect. 15. The adult Odonatan anatomy of the genital organs in the female as observed by me is in some respects different from that described by Tillyard. In conclusion I wish to express my deep sense of gratitude towards Professor Balfour-Browne and Dr. J. W. Munroe, both of whom have always been ready to help me. My colleague Mr. R. I. Nel, who is working on similar lines in this department,, has rendered me valuable help, not only in matters connected with the subject proper but also in translating difficult German references. I am also indebted to Mr. Peter Gray who helped me a good deal in translating references in Italian.

The anatomy, histology, and physiology of the reproductive systems of Lytta nuttalli Say (Coleoptera: Meloidae). I. The internal genitalia

1971 ◽  
Vol 49 (4) ◽  
pp. 523-533 ◽  
Author(s):  
G. H. Gerber ◽  
N. S. Church ◽  
J. G. Rempel
Keyword(s):  
Vas Deferens ◽  
Ejaculatory Duct ◽  
Reproductive Organs ◽  
Accessory Gland ◽  
Bursa Copulatrix ◽  
Reproductive Systems ◽  
Accessory Glands ◽  
Internal Genitalia ◽  
Spermathecal Gland ◽  
Colleterial Gland

The anatomy and histology of the male and female internal genitalia of Lytta nuttalli Say and the functions of the various organs during copulation and oviposition are described. In addition to the ovaries, lateral and common oviducts, and vagina, the female system includes a spermatophoral receptacle, accessory gland, and spermatheca. The most distinctive feature is the voluminous spermatophoral receptacle, which seems to be homologous with the bursa copulatrix of other Coleoptera, but serves to store and digest old spermatophores. The accessory gland is not a colleterial gland, but instead produces materials that probably are involved in the transfer of the spermatozoa into the spermatheca. The epithelia of the calyces and oviducts secrete the frothy, mucilaginous material that coats the eggs at oviposition. In the absence of a separate spermathecal gland, the epithelium of the spermatheca apparently has taken over its functions. The ovaries contain several hundred ovarioles of the telotrophic type. The chief structures of the male system are three pairs of accessory glands plus the testes, vasa deferentia, and ejaculatory duct. Each vas deferens consists of an enlarged portion that serves as an additional accessory gland and a narrow part, which is the seminal vesicle. Materials produced in the three pairs of accessory glands and the glandular portions of the vasa deferentia are used in spermatophore formation. The testes contain several hundred short sperm tubes similar to those of other insects. The arrangement, form, and functions of the internal reproductive organs of L. nuttalli are compared with those of other insects. Observations made on the reproductive systems of four species of Epicauta are also discussed in this context.

Male accessory gland substance: an egg-laying stimulant in Melanoplus sanguinipes (F.) (Orthoptera:Acrididae)

1969 ◽  
Vol 47 (6) ◽  
pp. 1199-1203 ◽  
Author(s):  
R. Pickford ◽  
Al B. Ewen ◽  
C. Gillott
Keyword(s):  
Seminal Vesicle ◽  
Chemical Substance ◽  
Accessory Gland ◽  
Egg Laying ◽  
Melanoplus Sanguinipes ◽  
Male Accessory Gland ◽  
Accessory Glands ◽  
Egg Deposition ◽  
Complete Set ◽  
Per Se

The rate of egg deposition by mature virgin females of the migratory grasshopper, Melanoplus sanguinipes (F.), increased markedly after implantation of accessory glands from mature males. Implants consisting of one-half of a complete set of glands, or of the 10 short hyaline glands alone, were about equally effective in increasing the rate of egg deposition. However, in each case the oviposition rate was less than that of normally mated females of the same age. Implanting only the white glands of the accessory gland complex had a lesser effect on egg-laying and implants of the long hyaline gland or of the seminal vesicle had little or no effect.Our results indicate that the physical act of mating per se or the presence of sperm probably do not provide the primary stimulus to egg-laying. The abdominal location of the implanted accessory gland does, however, suggest that some diffusible chemical substance is responsible for increasing egg deposition in these virgin females.

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