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Showing 1 to 20 of 22 for “"oviducts"”.
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Role of the oviduct environment in sperm storage
… gilts were estrus induced and synchronized. The oviducts of 9 animals were collected 12 hrs after displaying signs of estrus and artificially inseminated. The oviducts of the remaining 9 animals were collected seven days after displaying signs of estrus and were not inseminated. Epithelial cells …
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Biologia reprodutiva de Artibeus lituratus (Olfers, 1818) (Chiroptera: Phyllostomidae)
… sections were obtained from vagina, uterus, oviducts and ovaries in females and accessory glands, testis and epididymis in males. A lituratus is a monovular species since only one corpus luteum was found in each ovary and both ovaries are functional. A particular aspect is the engorgement of …
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Estudo da atividade reprodutiva de hyla truncata Izecksohn, 1959 (Anura, Hylidae) na Restinga de Maricá, RJ
… 1986 to August 1988. The body, ovaries, oviducts, and fat bodies weights were recorded for each animal. The ovaries and testes were fixed for histological assessment of maturity condition. Organs weights were expressed as percentage of body weight, and treated as IGS (ovary), IOV …
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Bovine embryo microinjection, culture, microsurgery, and DNA analysis by the polymerase chain reaction technique
… (OEC; n=38), or in explanted immature mouse oviducts (n=54). Of the embryos that cleaved once, 52.6, and 30.4 and 0.0% developed to morulae/blastocysts after culture in OEC, TCM-199, and explanted mouse oviducts. Mean cell number for embryos cultured in OEC (24.5) was higher than for embryos …
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TREK-1 confers differential effects on contractile dynamics in myometrium and the oviduct, indicating a unique role in endometriosis and labor
… the TREK-1 agonist ML335. It was determined that oviducts incubated in IL-6 had a decreased contractile response after washout compared to oviducts which were not exposed to IL-6, and both groups had a similar level of contractility relative to control when exposed to ML335. TREK-1 protein …
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Seasonal Reproductive Changes in Cryptobranchus Alleganiensis
Seasonal changes in the testes, ovaries, and oviducts were studied in Cryptobranchus alleganiensis collected from the Niangua River, Missouri, from October 1979 through October 1980. Spermatogenesis occurred from late June through early August. Length, absolute weight, and relative weight of the …
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Revisão taxonômica de Dipsas Laurentis, 1768 (Serpentes, Colubridae) de ocorrência na Mata Atlântica
… oviparous, and that the groups of eggs in oviducts range between 1-9.
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Oxytocin-induced cervical dilation in sheep: mechanism of action and potential use for nonsurgical artificial insemination
… without affecting the movement of sperm to the oviducts (Exp. 3) or fertilization rate (Exp. 9). Oxytocin probably binds to uterine and cervical receptors (Exp. 6) and stimulates uterine tetany (Exp. 2) and prostaglandin release (Exp. 5). Because of the irregular arrangement of smooth muscle in …
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Morphology of the Internal Reproductive System of the Male and Female European Corn Borer Ostrinia Nubilalis (Hubner)
… of the spermathecal complex, the lateral oviducts, the common oviduct and the bursal duct. After insemination, only the bursal duct displays a transparency. The female emerges with unripe eggs and at this stage of development has the capacity to receive the spermatophore immediately after …
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Recruitment of monocytes to the pre-ovulatory ovary
… and analyzed by multi-color flow cytometry. Oviducts were collected from mice 20 hours after hCG administration and cumulous oocyte complexes were collected, counted and averaged to determine ovulation rate. Immunohistochemistry was used to determine the location of specific cell types in the …
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Constraints on the Evolution of Viviparity in the Lizard Genus Sceloporus
… stage that embryos are able to attain in the oviducts (i.e., stage of developmental arrest). The results of this study indicated that these features of shells do not determine the stage at which development becomes arrested. Thus, the results do not support the hypothesis that shell reduction …
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Challenge studies in chickens to evaluate the efficacy of commercial Newcastle disease vaccines against the strains of Newcastle disease virus prevalent in South Africa since 2002
… with numerous stained viral antigens in the oviducts demonstrated by immunohistochemistry. The susceptibility and colonisation of the oviduct of laying hens by both the lentogenic La Sota and the virulent NDV isolates was confirmed, with the uterus being more susceptible than magnum and …
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Xenogenous Intrafallopian Transfer of Horse (Equus caballus) Gametes
… and two cleaved to 3 and 4-cell stages. Oviducts of 16 ewes were use for XGIFT, which involved surgical transfer of an average of 13 oocytes with 40x103 capacitated spermatozoa per oocyte. Of 259 oocytes transferred, 36 (14%) were recovered between 2 to 7 d post XGIFT and 13 (36%) showed …
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Role of Sox9 In Uterine Gland Development and Disease Initiation
… midway through embryogenesis, and consists of oviducts, uterine horns, cervix and upper part of the vagina. The uterine horns are composed of an epithelial layer, luminal (LE) and glandular epithelium (GE), surrounded by a mesenchymal layer, the stroma and myometrium. Interestingly, in most …
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Control of endometrial secretion in cattle and production of transgenic swine
… and zygote culture in excised mouse oviducts also was assessed. Synchronization/superovulation procedures were: 1) sows observed for estrous behavior (NAT), 2) cyclic gilts synchronized with altrenogest (ALT) for 15 to 19 d and superovulated with pregnant mares serum gonadotropin …
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Population dynamics of overwintering life stages of the alfalfa weevil, Hypera postica (Gyllenhal)
… the fall. Most contain full-size eggs in their oviducts from late fall through the winter. Egg densities as measured by laboratory incubation of field collected plant material indicated no differences related to elevation in early February, but significantly more viable eggs were present by late …
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Patterns of Nutrient Acquisition in Canvasbacks During Spring Migration
… of each staging area. Masses of ovaries, testes, oviducts, and the largest follicle diameter increased as spring migration phenology advanced. In late migration, ovary and oviduct masses of paired females were greater than in umpired females. Testes masses of paired and unpaired males did not …
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Investigation of the role of smooth muscle function in egg transport in the mouse oviduct.
The time course of egg transport along the mouse oviduct is important for successful implantation to occur. It is generally accepted that variations in the innate contractile activity of the oviduct musculature regulate the rate of egg transport, but the controlling mechanism behind these changes …
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Fat and Fructose Consumption Affects Pre-pubertal Gilt Reproductive Tissues and Early Embryogenesis
… and p<0.01). GDF9 expression was lower in the oviducts of gilts consuming fat diets when compared to non-fat diets (p=0.01). Neither IGFI nor IGFIR were altered in the reproductive tissues analyzed. Based on the results from both experiments, the consumption of fat and fructose alters both the …
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The reproductive seasonality and flight capability of Sitona discoideus Gyllenhal (Coleoptera: Curculionidae) and its pattern of larval establishment in Canterbury lucerne
… Oviductal eggs were located in the lateral oviducts from mid March onwards, while egg populations became apparent in the field in mid April. The importance of the winter months for larval establishment of S. discoideus was determined in Canterbury. Chlorpyrifos applied at 0.6kg a.i. ha⁻¹ on …
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