THE MORPHOLOGY OF THE MALE AND FEMALE REPRODUCTIVE SYSTEMS OF THE MIDGE, CHIRONOMUS PLUMOSUS L.

1962 ◽  
Vol 40 (2) ◽  
pp. 199-229 ◽  
Author(s):  
Rita J. D. Wensler ◽  
J. G. Rempel
Keyword(s):  
Reproductive System ◽  
Ejaculatory Duct ◽  
Reproductive Function ◽  
Accessory Gland ◽  
Reproductive Systems ◽  
Female Adult ◽  
Male And Female ◽  
Chironomus Plumosus ◽  
Nematode Worm

In both the male and female adult midge, the posterior three abdominal segments are modified for the reproductive function, and the musculature of these segments is modified accordingly. Main features of the male internal reproductive system are testes consisting of one sperm tube each, in which spermatogenesis is complete, and a glandular ejaculatory duct of four sections. The muscles of the posterior pregenital segments are modified for torsion. The muscles of the terminalia are described. Those of the ninth segment are greatly modified for the genital function. The female has numerous three-chambered polytrophic ovarioles extending radially from a common central egg passage in the ovary, and there is a single accessory gland. The muscles of the female terminalia are described. The reproductive system of several specimens parasitized by a nematode worm is discussed.

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.

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.

Memoirs: Notes on the Structure and Development of the Reproductive Organs in Philaenus spumarius L

1932 ◽  
Vol s2-75 (299) ◽  
pp. 467-481
Author(s):  
MARGOT E. METCALFE
Keyword(s):  
Abdominal Segment ◽  
Ejaculatory Duct ◽  
Reproductive Organs ◽  
Accessory Gland ◽  
Male And Female ◽  
Philaenus Spumarius ◽  
Efferent System

1. The genitalia are paired in origin and appear to represent, in the male the coxites and telopodites of the ninth abdominal segment; in the female the telopodites of the eighth, and the coxites and telopodites of the ninth segments. 2. The testes and vasa deferentia, ovaries and oviducts, are paired and mesodermal in origin. 3. The efferent system, other than the testes and vasa deferentia, ovaries and oviducts, is unpaired and ectodermal in origin. 4. The gonopore is serially homologous in the male and female; but is posterior to the ninth segment in the former, and posterior to the eighth segment in the latter. 5. The ejaculatory duct and the median uterus are not strictly homologous, the ejaculatory duct being more comparable with the median accessory gland in the female. 6. There seems to be, in the females of the Insecta, a tendency for the gonopore to be shifted posteriorly.

Structure and development of the reproductive system of some species of Nematocera (order Diptera: suborder Nematocera)

1950 ◽  
Vol 234 (614) ◽  
pp. 339-396 ◽  
Keyword(s):  
Reproductive System ◽  
Reproductive Systems ◽  
Male And Female ◽  
Typical Species ◽  
Accessory Glands ◽  
Efferent Ducts ◽  
The Common

The male and female reproductive systems in three typical species of Nematocera, order Diptera, representing the families of Chironomidae, Anisopidae and Mycetophilidae, have been studied and their development followed through the larva and pupa. A description has been given of the parts in each case in the imaginal fly, and as seen in development and a nomenclature of parts adopted in accordance with the homologies ascertained. In each case the basal plan is similar, but there is wide departure in the functional adaptations and form of the parts, so that without a study of the development the nature of some of the parts shown to be developmentally homologous would not be apparent. Briefly the reproductive system comprises in both sexes: ( a ) A primary reproductive system consisting of a pair of gonads in the sixth segment with mesodermal strands forming the primative mesodermal oviducts and vasa efferentia and linking the gonads with the ectodermal efferent ducts. ( b ) A secondary reproductive system of ectodermal origin which forms the greater part of both male and female efferent systems and which originates from hypodermal proliferative rudiments on the hypopygial segments and which may in various degrees replace by overgrowth the mesodermal ducts. ( c ) Appendicular parts forming in the male clasping organs (gonocoxites) and gonapophysial organs (paramere lobes) and also intersegmental inflexions and sclerotizations such as the atrium and vaginal apodeme in the female and the theca, penis sheath and, when present, an eversible sac or endotheca in the male. In the male recognizable homologous processes are the consecutive invaginations of the twin ejaculatory ducts and the median invagination of the penis tube, which later may be followed by a third intersegmental inflexion, that of the genital pouch excavating the penis and in Anisopus forming in its walls sclerotizations of the pompetta and piston apodeme. In the female are three recognizable invaginations, that taking origin from the eighth sternite rudiments, which conjointly by their peripodial cavity form the vagina with the spermathecal and later the common oviduct invaginations, and that from the conjoined hypodermal buds on the ninth sternite forming the caecus (the accessory glands).

scholarly journals The Coronavirus Disease 2019 pandemic as a threat to reproductive health and fetal life

2021 ◽  
Vol 8 (9) ◽  
pp. 509-513
Author(s):  
Dilan Çetinavcı ◽  
Ahmet Uğur Akman
Keyword(s):  
Reproductive Health ◽  
Respiratory System ◽  
Current Literature ◽  
Reproductive System ◽  
Mature Oocyte ◽  
Mature Sperm ◽  
Fetal Life ◽  
Reproductive Systems ◽  
Male And Female ◽  
The World

Objective: Covid-19 disease has spread rapidly across the world since its first appearance in 2019. At the beginning of the pandemic, Covid-19 disease was thought to affect only the respiratory system, although it has since been realized that it causes numerous transient or permanent problems in various body systems.  One of these effects involves the reproductive system. Several studies have investigated the effects of Covid-19 disease on the female and male reproductive systems. Embryological life depends on the fertilization of a healthy mature oocyte, a healthy mature sperm, and the continuation of pregnancy. The purpose of this article is to examine the effects of Covid-19 disease on the male and female reproductive systems and embryological life through a review of the current literature.

Effects of ageing and nutrition on the reproductive system of Samea multiplicalis Guenée (Lepidoptera: Pyralidae)

1986 ◽  
Vol 76 (3) ◽  
pp. 513-517 ◽  
Author(s):  
M. F. J. Taylor ◽  
D. P. A. Sands
Keyword(s):  
Reproductive System ◽  
Seminal Vesicles ◽  
Adult Size ◽  
Dietary Carbohydrate ◽  
Salvinia Molesta ◽  
Reproductive Systems ◽  
Male And Female ◽  
Dietary Nitrogen ◽  
Lepidoptera Pyralidae ◽  
Old Females

AbstractThe influence of ageing, larval dietary nitrogen and adult carbohydrate diets on development of the male and female reproductive systems of Samea multiplicalis Guenée are described. Mature oocytes appeared in the ovarioles of one-day-old females and remained constant in number from one to three days after eclosion. Females from larvae that fed on plants of Salvinia molesta matured fewer oocytes (65 vs. 138) when the plants had lower (0·94% vs. 2·74%) levels of nitrogen. Resorbing oocytes were identified in the ovarioles of females 1–3 days old. The proportion of females with resorbing oocytes increased with age but not with larval dietary nutrition. Following high levels of larval dietary nitrogen, the seminal vesicles in males increased in length, while their width increased with age but not with diet. High levels of larval dietary nitrogen and an intake of adult dietary carbohydrate were both necessary for maximum fecundity. Higher levels of larval dietary nitrogen resulted in greater adult size, as measured by forewing length.

scholarly journals The reproductive biology of flesh fly, Boettcherisca peregrina (Robineau-Desvoidy, 1830) (Diptera: Sarcophagidae)

2014 ◽  
Vol 23 (1) ◽  
pp. 61-67 ◽  
Author(s):  
Md Zahidur Rahman Majumder ◽  
Mohan Kumar Dash ◽  
Humayun Reza Khan ◽  
Rafia Akhtar Khan
Keyword(s):  
Reproductive Biology ◽  
Reproductive System ◽  
Ejaculatory Duct ◽  
Adult Emergence ◽  
Accessory Gland ◽  
Female Reproductive System ◽  
Flesh Fly ◽  
Gradual Development ◽  
The Mean ◽  
Male To Female

The reproductive biology of the flesh fly, Boettcherisca peregrina (Diptera : Sarcophagidae ) was studied in the blowfly laboratory (25 -30ºC, 60 - 80% RH and 12 hrs light and 12 hrs dark) of the Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Dhaka. The female reproductive system of B. peregrina comprises of two ovaries, two lateral oviducts, a common oviduct, three spermathecae, and a pair of accessory gland, a bilobed incubation pouch, vagina and genital opening. The male reproductive system B. peregrina consists of a pair of testes, a pair of vasa deferentia, a pair of accessory gland, a median ejaculatory duct, an ejaculatory sac and aedeagus. There is a general trend of gradual development of different organelles of the male and female reproductive systems from adult emergence to reproductive maturity. Protein diet was essential for proper development of female reproductive system. Oocyte development was apparent in both protein fed and protein unfed females. The mean sex-ratio of male to female was 20.2 : 14.2.  

The anatomy and histology of the internal reproductive organs of the sunflower beetle, Zygogramma exclamationis (Coleoptera: Chrysomelidae)

1978 ◽  
Vol 56 (12) ◽  
pp. 2542-2553 ◽  
Author(s):  
G. H. Gerber ◽  
G. B. Neill ◽  
P. H. Westdal
Keyword(s):  
Ejaculatory Duct ◽  
Reproductive Organs ◽  
Accessory Gland ◽  
Bursa Copulatrix ◽  
Reproductive Systems ◽  
Accessory Glands ◽  
Basic Features

The anatomy and histology of the female and male internal reproductive organs of the sunflower beetle, Zygogramma exclamationis (F.), are described. The female system consists of a vagina, bursa copulatrix, common oviduct, lateral oviducts, spermatheca, spermathecal accessory gland, and ovaries. Twelve ovaries examined contained from 23 to 32 telotrophic ovarioles, the average being 27.3. The male system consists of a pair of bilobed testes, a pair of accessory glands, vasa deferentia, and an ejaculatory duct which is bifurcated at its anterior end. Three testes examined contained 34, 36, and 37 sperm tubes, respectively. The basic features of the reproductive systems of Z. exclamationis are similar to those of other Chrysomelidae.

Chemotherapy of Filariasis -On the Search of New Agents Effective on the Reproductive System of Female Adult Worms

1990 ◽  
Vol 45 (11-12) ◽  
pp. 1210-1214 ◽  
Author(s):  
Jujhar Singh ◽  
M. Seth ◽  
Nigar Fatma ◽  
Satyavan Sharma ◽  
A. P. Bhaduri ◽  
...  
Keyword(s):  
Adult Female ◽  
Reproductive System ◽  
Female Reproduction ◽  
Female Adult ◽  
New Agents ◽  
Male And Female ◽  
Design And Synthesis ◽  
Adult Females ◽  
The Future ◽  
Cotton Rats

The design and synthesis of a series of alkyl 5(6)-substituted benzimidazole-2-carbamates (1-13), 7-chloro-4-(4-substituted phenyl)aminoquinolines (14-16), l,2-dim ethyl-3-m ethoxycarbonyl- 4,5-disubstituted pyrroles (17-19) and some compounds belonging to the class pimelonitrile (20), dihydroquinoline (21), pyridine (22), pyridoquinoline (23) and tetrahydropyrimidine (24) have been carried out as possible antifilarial agents. All these compounds have been evaluated for their activity against male and female adult worms of Litomosoides carinii in cotton rats. The effect of these compounds was also observed on the reproductive system (condition of developing microfilariae and their release from uterus) of adult female worms. In this study, three types of compounds were discovered: (a) those which showed activity on both the male and female adult worms and also had sterilizing effects on surviving adult females (1 -3 , 6 - 9 , 13, 19), (b) those which only sterilized the adult females (14-16 , 21, 24), and (c) those which had no effect on female reproduction but killed only adult worms (4, 5, 11, 12, 17,18, 20, 22, 23). This tends to open up a new avenue in the chemotherapy of filariasis and the future scope of work on chemosterilization of adult females has been discussed.

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