Reproduction in the Bats Vespadelus-Vulturnus, V-Regulus and V-Darlingtoni (Microchiroptera, Vespertilionidae) in Coastal South-Eastern Australia

1993 ◽  
Vol 41 (1) ◽  
pp. 21 ◽  
Author(s):  
CR Tidemann
Keyword(s):  
Reproductive Tract ◽  
Late Summer ◽  
Maximum Size ◽  
Female Reproductive Tract ◽  
First Year ◽  
Fat Deposits ◽  
Eastern Australia ◽  
One Year ◽  
The Right ◽  
Sexually Mature

The sequence of reproductive and associated events that occurs in Vespadelus vulturnus is similar to those that are common to hibernating vespertilionids and rhinolophids. Females become sexually mature in their first year, whereas males do not undergo their first spermatogenesis until their second year. Both sexes accumulate fat deposits in late summer and autumn, but females begin to do this earlier and accumulate more than males. These deposits are gradually depleted over the course of winter. In autumn females produce a follicle of hibernation, the rupture of which is delayed until spring, when the resultant secondary oocyte is fertilised by sperm stored in the female reproductive tract. Females are monoestrous. Both ovaries are functional, although implantation occurs only in the right uterine horn. Males also undergo an annual cycle. Plasma androgen concentration and seminiferous tubule diameter reach a peak in late summer, with subsequent release of spermatozoa, but the accessory sex glands do not reach maximum size until late autumn. Sperm are present in the epididymides of males more than one year of age for the duration of winter. Male V. vulturnus arouse from torpor during winter more frequently than females. It is hypothesised that they do this in order to copulate, even though females store sperm and a copulatory plug forms in the vagina after insemination. The behaviour of the males can be explained by three factors: (1) some first-year females are not in oestrus at the beginning of winter, (2) some females with sperm stores depleted or absent are caught flying during winter and (3) in some females copulatory plugs are voided long before fertilisation occurs, thereby removing the barrier to subsequent insemination. Vespadelus regulus and V. darlingtoni appear to have a reproductive cycle similar to that of V. vulturnus.

scholarly journals Antisymmetric male genitalia in Western Australian populations of Mecyclothorax punctipennis (Coleoptera: Carabidae: Moriomorphini)

2015 ◽  
Vol 46 (4) ◽  
pp. 393-409 ◽  
Author(s):  
James K. Liebherr ◽  
Kipling W. Will
Keyword(s):  
Reproductive Tract ◽  
Small Population ◽  
Female Reproductive Tract ◽  
Individual Species ◽  
Eastern Australia ◽  
Differential Gene ◽  
The Individual ◽  
The Right ◽  
Population Demographic ◽  
Western Australian

Western Australian populations of Mecyclothorax punctipennis (MacLeay) exhibit chiral polymorphism for male genitalic asymmetry. The plesiomorphic genitalic enantiomorph, wherein the male aedeagal median lobe is left side superior when retracted in the abdomen, is rotated 180° to a right side superior position in 23% of males from Western Australia. Conversely, population samples from eastern Australia are monomorphic for the plesiomorphic left side superior condition. Western Australian population samples are significantly heterogeneous for the percentages of chirally reversed males, with right side superior frequencies ranging 0–58%. Conversely, asymmetry of the M. punctipennis female reproductive tract, wherein the apex of the bursa copulatrix is distally expanded toward the right side of the individual, is shown to be monomorphic within the species. Based on the vast disparity in frequencies of left versus right enantiomorphs among populations of Western Australian M. punctipennis, we hypothesize that population demographic factors related to very small population size and differential gene sampling via genetic drift could interact to establish populations fixed for the novel form. When such chiral genitalic substitutions are coupled with speciation, subsequent diversification stemming from that common ancestor would result in monophyletic lineages characterized by genitalic inversion. This hypothesis is corroborated by the sporadic occurrences of individual males with chirally inverted genitalia throughout the Carabidae, and the known occurrence of eight carabid taxa — individual species to diverse lineages — that are monomorphically characterized by male genitalic inversion.

THE TRANSPORT OF OVA IN RELATION TO THE DOSAGE OF OESTROGEN IN OVARIECTOMIZED RABBITS

1959 ◽  
Vol 18 (1) ◽  
pp. 108-117 ◽  
Author(s):  
R. W. NOYES ◽  
C. E. ADAMS ◽  
A. WALTON
Keyword(s):  
Reproductive Tract ◽  
Great Variability ◽  
Female Reproductive Tract ◽  
The Body ◽  
Oestrogen Treatment ◽  
Uterine Tube ◽  
Ovum Transport ◽  
Oestradiol Benzoate ◽  
The Right ◽  
Egg Transport

SUMMARY In order to determine what part the level of oestrogen in the body might play in the passage of ova through the female reproductive tract, 1249 freshly ovulated ova from donor rabbits were transferred into the uterine tubes of seventy-four ovariectomized recipients, fifty-three of which had previously been treated for 5–18 days with small daily injections of oestradiol benzoate. From 10 to 78 hr after transfer, 41% of the ova were recovered from the uterine tubes, 9% from the uterine horns, and 23% from the vaginae of the recipient animals. Twenty-seven% of the ova were lost. The rate of ovum transport varied widely between similarly treated animals, and between the right and left sides of the reproductive tract of the same animal. Larger proportions of ova were retained in the uterine tubes, and smaller proportions in the uterine horns as the oestrogen dose was increased. The great variability in the stage of cleavage and in the thickness of the mucin coat of ova recovered from the uterus and vagina suggested that the ova might be widely dispersed through the uterine tubes and that they probably pass out of the uterine tube at widely different periods of time. Evidence is presented that ovum transport in ovariectomized rabbits with or without oestrogen treatment is very irregular, that ova may be ejected from either end of the uterine tube at almost any time after transfer, and that ova are not normally retained in the uteri of such animals. Approx. 1 μg oestradiol benzoate administered daily for 5–10 days was necessary to maintain the uterine weight of ovariectomized rabbits at about the same level as that in intact oestrous rabbits, and also to reduce the variability in egg transport observed in control and ovariectomized animals.

scholarly journals Inhibition of mouse fertilization in vivo by intra-oviductal injection of an anti-equatorin monoclonal antibody

Reproduction ◽  
2001 ◽  
pp. 649-655 ◽  
Author(s):  
K Yoshinaga ◽  
DK Saxena ◽  
T Oh-oka ◽  
I Tanii ◽  
K Toshimori
Keyword(s):  
Monoclonal Antibody ◽  
Reproductive Tract ◽  
Female Reproductive Tract ◽  
Pathological Changes ◽  
Histological Studies ◽  
Control Side ◽  
Mammalian Sperm ◽  
The Right ◽  
And Control

The monoclonal antibody mMN9 recognizes an antigenic molecule, equatorin, which is localized at the equatorial segment of the mammalian sperm acrosome. Our previous results using an IVF system indicated that mMN9 blocked sperm-oocyte fusion. Antibody-containing and control solutions were injected directly into the right and left oviductal ampullae, respectively, of anaesthetized female mice to assess the effect of mMN9 on fertilization in vivo. After hCG treatment, the females were mated, and their oviductal eggs and implanted embryos were examined. mMN9 was retained in the oviductal lumen at 20 h after injection. The rates of fertilization and concomitant pregnancy were significantly lower than in the control side (P < 0.05). In addition, histological studies showed no evidence of pathological changes in the female reproductive tract after the injections. These results indicate that mMN9 inhibits mouse fertilization significantly under in vivo conditions and that this injection method should be useful for studying the effects of antibodies and agents on fertilization in vivo.

scholarly journals Biometry of Female Genital Organs of Black Bengal Goat

1970 ◽  
Vol 1 (1) ◽  
pp. 12-16 ◽  
Author(s):  
MD Gupta ◽  
MM Akter ◽  
AD Gupta ◽  
A Das
Keyword(s):  
Reproductive Tract ◽  
Gravid Female ◽  
Female Reproductive Tract ◽  
Biometric Parameters ◽  
Significant Difference ◽  
The Mean ◽  
The Right ◽  
Black Bengal Goat ◽  
Uterine Body ◽  
Female Genital

This study was conducted to establish the normal dimensions of the different segments of the female reproductive tract of the Black Bengal goats. The reproductive tracts of 56 adult non-gravid, female Black Bengal goat were collected and biometric parameters of different segments of the female reproductive tracts i.e. vulva, vagina, cervix, uterine body, uterine horns, oviducts and ovaries were measured .The lengths of the right and left ovaries were 1.453±0.034 and 1.410±0.026 cm, respectively. Mean weight of left ovary was 0.5944±0.06 gm and that of right ovary was 0.614±0.07 gm in Black Bengal goat. The average numbers of follicle in right and left ovaries were 4.123±0.230 and 3.893±0.229, respectively. The mean lengths of the vulva, vagina, cervix, uterine body, uterine horns and oviduct were 2.671±0.063, 7.132±0.165, 3.348±0.113, 2.50±0.112 and 12.287±0.270 and 10.150±0.228 cm, respectively. The width of the vagina, cervix, uterine body and uterine horn were 3.972±0.098, 1.7551±0.042, 2.739±0.079 and 2.805±0.069 cm, respectively. The average number of curuncle in uterus was 54.714±1.70. A significant difference (p<0.05) between right and left ovaries was found for ovario-bursal adhesion. The mean weight, length and width in the present study were found higher in right ovaries than those of left ovaries. Key wards: Black Bengal goat; biometric parameters; ovary; uterus; cervix; vagina. DOI: http://dx.doi.org/10.3329/ijns.v1i1.8609 International Journal of Natural Sciences (2011), 1(1):12-16

Proteins from male and female reproductive tracts involved in sperm function regulation

Zygote ◽  
2019 ◽  
Vol 27 (1) ◽  
pp. 5-16 ◽  
Author(s):  
Gabriela Hernández-Silva ◽  
Mayel Chirinos
Keyword(s):  
Reproductive Tract ◽  
Seminal Fluid ◽  
Female Reproductive Tract ◽  
Seminiferous Tubules ◽  
Sperm Function ◽  
Competent Cell ◽  
Male And Female ◽  
Fertilizing Ability ◽  
Sexually Mature ◽  
Sperm Fertilizing Ability

SummarySpermatogenesis is a dynamic process that culminates in the production of mature spermatozoa in the seminiferous tubules of sexually mature animals. Although sperm leaving the testis are fully differentiated, they must further undergo two additional maturation steps before acquiring the capability to fertilize the egg. Such processes take place during the epididymal residency and transport in the seminal fluid during ejaculation and, after delivery into the female reproductive tract, during the journey aiming the encountering the egg in the oviduct. Throughout this trip, spermatozoa are exposed to different reproductive fluids whose molecular compositions regulate the progress towards obtaining a fertilized competent cell. This review summarizes the evidence obtained so far supporting the participation of male and female reproductive tract-derived proteins in the modulation of sperm fertilizing ability and discusses the mechanisms by which such regulation may be accomplished.

scholarly journals Cervical Dysgenesis with Transverse Vaginal Septum with Imperforate Hymen in an 11 year old Girl Presenting with Acute Abdomen

2013 ◽  
Vol 52 (189) ◽  
pp. 281-284 ◽  
Author(s):  
Pratiksha Gupta ◽  
Sangeeta Gupta ◽  
Sunita Jindal ◽  
Kanwaljeet Chopra ◽  
Manjari Sinha ◽  
...  
Keyword(s):  
Reproductive Tract ◽  
Female Reproductive Tract ◽  
Successful Outcome ◽  
Careful Evaluation ◽  
Vaginal Septum ◽  
Imperforate Hymen ◽  
Simple Mode ◽  
Transverse Vaginal Septum ◽  
Future Fertility ◽  
The Right

This case highlights the importance of careful evaluation of girls presenting with imperforate hymen as this is accompanied by other female reproductive tract anomalies. It is of utmost importance that a correct timely diagnosis is made so that the right treatment can be chosen with the perspective of future fertility. Cervical dysgenesis associated with vaginal septum and imperforate hymen has not been reported in literature so far. Present case highlights the simple mode of management with a successful outcome. Keywords: cervical dysgenesis; imperforate hymen; transverse vaginal septum.

Structure of the female reproductive tract of an adult parous Tasmanian tiger, Thylacinus cynocephalus

2000 ◽  
Vol 48 (5) ◽  
pp. 487
Author(s):  
R. Leon Hughes
Keyword(s):  
Reproductive Tract ◽  
Ovarian Follicle ◽  
Peripheral Zone ◽  
Female Reproductive Tract ◽  
Urogenital Sinus ◽  
Vaginal Septum ◽  
Ovarian Follicle Development ◽  
Corpus Uteri ◽  
Primary Oocyte ◽  
The Right

The present observations on the now-extinct Thylacinus are based on the reproductive system of an adult thylacine discovered among the specimens of the Hill collection at the Hubrecht Laboratory in the Netherlands. As in other marsupials, the reproductive tract was characterised by the presence of a uterus duplex and a vaginal complex where the ureters passed dorsally over each lateral vaginal canal to enter the bladder. The lateral vaginal canals each entered a urogenital sinus that terminated in a shallow cloaca. The gross dimensions of the reproductive tract of the thylacine were greater than those of any extant dasyurid marsupial. The distance from the rostral pole of the ovaries to the most caudal extremity of the urogenital sinus measured 25 cm. The distinctive aspects of the reproductive tract included a disproportionate enlargement of the corpus uteri that is without parallel in any other marsupial species. The bodies of the right and left uteri measured 10.4 cm 1.2 cm 0.9 cm and 9.1 cm 0.8 cm 0.7 cm respectively. The rostro-caudal length of the right and left cervices measured 2.7 cm and 1.7 cm respectively. The cervical canals entered the vaginal complex by way of a thick median vaginal septum. The elongated caudal component of the vaginal culs-de-sac lacked a median vaginal septum. As in other dasyurid marsupials, the lateral vaginae and associated vaginal complex were of diminutive proportions in relation to the typical marsupial pattern. The histology of the tract was remarkably good for tissue preserved since 1902 and indicated that the tissues were free of pathological changes. A characteristic marsupial pattern of ovarian folliculogenesis was evident where all but a thin peripheral zone of the cytoplasm of the primary oocyte became vacuolated during the pre-antral stage of ovarian follicle development.

scholarly journals Fibroid with unilateral streak ovary in Mullerian Agenesis!a rare case report

2018 ◽  
Vol 7 (8) ◽  
pp. 3392
Author(s):  
Renuka Malik ◽  
Avani Goyal ◽  
Meenakshi Bhardawaj
Keyword(s):  
Reproductive Tract ◽  
Preoperative Assessment ◽  
Female Reproductive Tract ◽  
Primary Amenorrhea ◽  
Mrkh Syndrome ◽  
Rudimentary Horn ◽  
Vaginal Aplasia ◽  
Rare Case Report ◽  
Müllerian Agenesis ◽  
One Year

Mayer-Rokitansky-Kuster-Hauser (MRKH) syndrome is a rare anomaly (1/5000) associated with uterine and vaginal aplasia with normal ovaries. A fibroid in a normal uterus is common but a fibroid arising from rudimentary horn in Mayer-Rokitansky-Kuster-Hauser (MRKH) syndrome is very rare. It is also rare to have the association of unilateral ovarian dysgenesis in MRKH. A 37 year old married female with primary amenorrhea presented to the OPD of Dr. RML Hospital with abdominopelvic mass for one year. She was phenotypically normal looking and there was no other associated cardiac, ocular or skeletal abnormality. A large 15 × 15 cm abdominopelvic mass was present in suprapubic area which was firm in consistency and non-tender. A Two and a half inch long blind vaginal pouch was present with absence of cervix and uterus. A provisional diagnosis of solid ovarian tumor in MRKH syndrome was made. Her investigations -Serum FSH, LH, estradiol and tumor markers were normal. Her ultrasound and MRI reported a fibroid with normal ovaries. Laparotomy revealed absence of uterus and cervix and a large fibroid arising from right rudimentary horn with left streak ovary. Right ovary was enlarged to 4 × 4 cm, showing multiple small follicles. Fibroid along with the rudimentary horns and the streak ovary was removed, preserving the normal right ovary. Histopathology confirmed the diagnosis of leiomyoma in rudimentary horn with left streak ovary, making it class1 type b anomaly under American fertility society classification. Preoperative assessment of rare anomalies can be different from intraoperative findings in certain female reproductive tract anomalies. Awareness of rare combinations can help in judicious management of such cases. 

Fibromyoma of the uterus and its surgical management

2017 ◽  
Vol 6 (8) ◽  
pp. 3637
Author(s):  
Rajeshwari Laxman Khyade ◽  
Rakhi M. More
Keyword(s):  
Reproductive Tract ◽  
Negative Impact ◽  
Tertiary Care ◽  
Uterine Fibroids ◽  
Female Reproductive Tract ◽  
Menstrual Blood Loss ◽  
Surgical Options ◽  
One Year ◽  
Pain Symptoms

Background: Uterine fibroids are the commonest tumor affecting the female reproductive tract. In many instances they are asymptomatic, but in some women there does appear to be an association with heavy menstrual blood loss and subfertility. Classically treatment has been surgical with hysterectomy the most common approach for women who have completed their fertility and myomectomy for those who wish to conceive. The surgery can be carried out laparoscopically, vaginally and abdominally, although all routes are associated with an appreciable rate of morbidity. The aims of this study are (i) to formulate the line of surgical treatment of fibromyomas according to age and parity of the patient, (ii) to assess their efficacy, safety and long-term outcome.Methods: A study of 50 patients attending the Obstetrics and Gynecology OPD of a tertiary care institute was conducted over a period of one year. Detailed history and examination of the patients were done.Results: The best surgical options for individual patients were evaluated according to age and parity of the patient. Various surgical options were Hysterectomy and Myomectomy.Conclusions: Uterine fibroids can cause multiple bleeding and pain symptoms, which might have a negative impact on women's life, influencing their sexual, social and work life. Despite these consequences uterine fibroid data, especially on epidemiology, symptomatology and their impact on women's health are still limited and further research is required.

scholarly journals Hysterolaparoscopy as a one-time approach in infertility: a prospective study

2020 ◽  
Vol 9 (7) ◽  
pp. 2992
Author(s):  
Rini Sutaria ◽  
Richa Singh ◽  
Sriram Gopal
Keyword(s):  
Prospective Study ◽  
Reproductive Tract ◽  
Female Reproductive Tract ◽  
Secondary Infertility ◽  
Tubal Factor ◽  
Diagnostic Hysteroscopy ◽  
One Year ◽  
Infertility Patients ◽  
A Prospective Study ◽  
Developed Nations

Background: The prevalence of infertility ranges from 3.5% to 16.7% in more developed nations and from 6.9% to 9.3% in less developed nations, with an estimated overall median prevalence of 9%. The present study was aimed to evaluate the role of hysterolaparoscopy in the study of primary and secondary infertility, to identify the various pathological conditions in female reproductive tract leading to primary/ secondary infertility, to develop a plan for therapy and management at the same time.Methods: This is a one-year prospective study conducted in obstetrics and gynecology department at D. Y. Patil hospital, Navi Mumbai, Maharashtra, India. All infertility patients seen in outpatient department, who were medically fit, willing for surgery and willing to get enrolled for study were included in this study.Results: Out of total 120 cases for infertility evaluated, tubal factor is the most common cause (28.3%) in both primary (23.3%) and secondary (43.3%) infertility group as seen on laparoscopy. Followed by ovarian factors (28.3%), peritoneal (11.6%) and uterine factors (10.8%). In 27 cases (22%), there were no detectable pathology at laparoscopy. In this study, hysteroscopy findings show 5.8% cases to have submucous fibroid uterus, 3.3% submucous polyp, 1.6% subseptate uterus, 0.8% septate uterus, 0.8% intrauterine adhesions, 0.8% bicornuate uterus and cervical stenosis 1.6% of patients.Conclusions: From this study, it is concluded that the diagnostic hysteroscopy and laparoscopy is an effective and safe tool in evaluation of female infertility. It provides direct and magnified view of all pelvic organs.

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