Anatomy of the female reproductive system of Rusa deer (Rusa timorensis) (original) (raw)
Related papers
Morphology of the female reproductive system of Rusa Deer (Rusa timorensis)
This study described the gross anatomical and histological characteristics of the female reproductive system of Rusa deer (R. timorensis). Description of the morphology of the female reproductive system was performed on two adult hinds after slaughter. The different reproductive structures were measured using a pair of calipers and a long string. Histology and Scanning Electron Microscopy were done according to the standard methods. The mean and standard deviation for each segment of the reproductive tract measured were calculated and tabulated. The morphology of the female reproductive system of R. timorensis is similar to that observed in domestic ruminants except that the uterus did not have an interconual ligament and unlike domestic ruminants, the left ovary is slightly larger than the right ovary which indicates that it is physiologically more active. Unlike the cows and goats, the cervix of R. timorensis is characterized by six cervical rings projecting into the cervical canal. This feature should be taken into account when designing effective instrumentation and techniques for transcervical passage of semen during artificial insemination in this species. Two cell types were observed in the epithelium of the reproductive tract: ciliated cells and nonciliated secretory cells. Understanding the unique morphology of the female Rusa timorensis reproductive system will help in the development of appropriate reproductive techniques in order to increase its population in captivity. Keywords: morphology, ciliated cells, secretory cells, Rusa timorensis, female reproductive system
The study aims to present baseline data on the reproductive anatomy of a poorly known tropical deer species, Rusa deer (Rusa timorensis). The anatomy of female reproductive system is described using seven uniparous hinds, aged between four and eight years. The various reproductive structures were studied via s t a n d a r d d e s c r i p t i v e methods. There was a significant difference in the length and width of both right and left ovaries. The left ovary was slightly larger than the right ovary which indicates that it is physiologically more active. The results of the study showed that the anatomy of female reproductive system of R. timorensis was similar to that observed in domestic ruminants except that the uterus did not have an interconual ligament and this implies that the uterine horns are anchored in such a way that sperm deposited into only one uterine horn of the Rusa deer will be transported to the other uterine horn (interconual transport). Unlike the red brocket deer and pampas deer, the cervix of R. timorensis was characterized by six cervical rings projecting into the cervical canal. This feature should be taken into account when designing effective instrumentation and techniques for transcervical passage of semen during artificial insemination in this species. The results from this study have provided baseline data on the reproductive anatomy of this vulnerable species, and the knowledge generated can be useful in the development of appropriate reproductive techniques in order to increase its population in captivity and also enable easy detection of its reproductive anomalies, thus strategies to propagate and conserve the species can be established.
To describe the macroscopic anatomy of the genital organs of the female pampas deer (Ozotoceros bezoarticus), organs from animals dead in a captive breeding station were dissected. A total of twenty seven females, 17 adults and 10 pre-puberal approximately 1 year old were studied by gross dissection. The ovaries of adult females without corpora lutea weighed 0.22 ± 0.02 g on the right and 0.20 ± 0.01 g on the left and accounted for 0.03 ± 0.01% of body weight. All corpora lutea (n = 6) were found in the right ovary, but in cases where there was no corpus luteum present, the right ovary tended to be heavier than the left (P = 0.1). The absence of ovarian bursa, intercornual ligament and suburethral diverticle is peculiar to this deer species. Only 6 convex caruncles were found in the uterine horns, which differ from the more of 100 present in domestic ruminants. Four regular folds that were observed in the cervix of the uterus should not be an obstacle to the passage of a transcervic...
Reproductive biology of the pampas deer (Ozotoceros bezoarticus): a review
Acta Veterinaria …, 2008
The pampas deer (Ozotoceros bezoarticus) is a South American grazing deer which is in extreme danger of extinction. Very little is known about the biology of the pampas deer. Moreover, most information has not been published in peer-reviewed scientific journals, and is only available in local publications, theses, etc. Therefore, our aim was to update and summarize the available information regarding the reproductive biology of the pampas deer. Moreover, in most sections, we have also included new, unpublished information. Detailed descriptions are provided of the anatomy of both the female and the male reproductive tract, puberty onset, the oestrous cycle and gestational length. Birthing and the early postpartum period are described, as are maternal behaviour and early fawn development, seasonal distribution of births, seasonal changes in male reproduction and antler cycle, reproductive behaviour, semen collection, and cryopreservation. Finally, an overview is given and future directions of research are proposed.
Reproductive Characteristics of Female Sika Deer in Maryland and Virginia
Journal of Mammalogy, 1988
JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.
Gross anatomy of the male genital organs of the pampas deer (Ozotoceros bezoarticus, Linnaeus 1758)
To describe the macroscopic anatomy of the genital organs of the male pampas deer (Ozotoceros bezoarticus), organs from ten animals found dead in a captive breeding station were dissected. The unpigmented scrotum was located in the inguinal region near the body, and was covered by the thighs. In the investments of the testicles the dartos tunic was greatly developed. The cremaster muscle was located dorsocaudal to the testicle, and was divided caudally into three bundles of fibers. The right testicle was significantly heavier than the left, and there was a positive relationship between body weight and the weight of both testicles. The tail of the epididymis, ventrally located, had a caudal portion attached to the caudal extremity of the testicles by the proper ligament of the testicles, and a portion elongated free caudally located. The deferent duct was located caudomedially to the corresponding testicle. The accessory genital glands were the ampullary glands, vesicular glands, and...
scienceline publication, 2023
Understanding the reproductive behaviors of different wildlife species is essential to unravel their reproductive strategies, ecological adaptations, and conservation requirements. This study delved into the reproductive biology of the sambar deer (Rusa unicolor), with a focus on promoting assisted reproductive technology for wildlife conservation and investigating the reproductive behaviors of male and female sambar deer. The study was conducted at Pusat Konservasi Hidupan Liar (PKHL) Sungkai, Perak, Malaysia. The observation focused on one male and two female sambar deer. Direct observations of the deer were conducted for 14 days in September 2022. The direct observations were performed in the morning (Session 1= 8-10 am), afternoon (Session 2 = 10-12 pm), and evening (Session 3= 3-5 pm), using the instantaneous sampling method. A total of 75 behavior instances were recorded, in which male deer exhibited the most reproductive behavior at 58 instances (77.3% of the total reproductive behavior). Successful mating was observed on day 6, elucidating a crepuscular preference in the male animal in exhibiting reproductive behavior. The female's reproductive behavior lasted for a short period, from 24 hours for Female 2 and 72 hours for Female 1. In conclusion, there was a distinct behavior between the male and female deer during the rutting season. Understanding the reproductive behavior to estimate the length of estrus can be useful as a noninvasive tool to detect heat and can be considered to improve breeding management and implement assisted reproductive technology.