| prothrombin-activator (thromboplastin) generation in the blood of water snake (natrix piscator). | the generation of prothrombin-activator (thromboplastin) in water snake (natrix piscator) is clearly delayed, compared to a mammalian system, but the final activity is well comparable to that in man, when homologous sources of "phospholipid" (erythrocyte-lysate) and of substrate plasma are employed in one stage "thromboplastin generation test". the use of heterologous source of either of the above reagents resulted in significantly longer clotting times; hence the need for homologous source of a ... | 1981 | 7330828 |
| cytogenetic characterization and fluorescence in situ hybridization of (gata)10 repeats on established primary cell cultures from indian water snake (natrix piscator) and indian mugger (crocodylus palustris) embryos. | sex determination among reptiles has continued to draw the attention of geneticists and the mechanisms involved have been extensively studied and documented in the past 3 decades. the setting up of primary cell lines of reptilian tissues is an important tool in the present study which is a unique aspect not applied in earlier studies. establishing the cell lines from various species of reptiles would help in our understanding of the mechanisms of evolution and differentiation of sex chromosomes. ... | 2010 | 20339292 |
| erythropoietin, testosterone, and thyroxine in the erythropoietic response of the snake, xenochrophis piscator. | the erythropoietic response of snakes was examined after injecting human urinary erythropoietin (ep), testosterone propionate (tp), and l-thyroxine (t4), separately and in combinations, into starved ophids. the effect of starvation was reflected by a decrease in the number of erythrocytes, a fall in hemoglobin concentration, and a decline in hematocrit. statistically significant elevation of erythrocyte number, hemoglobin concentration, and hematocrit was observed at 24 hr following the administ ... | 1984 | 6714657 |
| [a new ascarid, ophidascris n. sp., parasite of natrix piscator (schlegel) in south vietnam]. | | 1970 | 5537817 |
| ascaridia galli infection in a checkered keelback (xenochrophis piscator) snake. | the checkered keelback is also known as asiatic water snake and is common species of non-venomous snake known to occur in india. the present study report the occurrence of ascaridia galli infection in a checkered keelback snake, which was found dead near veterinary college hostel premises. the post-mortem examination of the snake revealed catarrhal exudate without ingesta in the stomach and showed gastric ulcerations with edema. large numbers of round worms were packed in the lumen of small inte ... | 2017 | 28316392 |
| parathyroid gland of the freshwater snake natrix piscator schneider. | the structure and function of the parathyroid glands of freshwater snake, natrix piscator, were studied. n. piscator has two pairs of parathyroid glands which are composed of cell cords of typical endocrine appearance, and follicles are absent. parathyroidectomy was followed by significant (p less than 0.001) hypocalcemia and hyperphosphatemia throughout the 5th week of experimental period. following parathyroidectomy, calcium and phosphate concentrations in bone were significantly (p less than ... | 1983 | 6884764 |
| hepatozoon and theileria species detected in ticks collected from mammals and snakes in thailand. | we report the detection of hepatozoon and theileria in 103 ticks from mammals and snakes in thailand. by using a genus-specific 18s rrna pcr, hepatozoon and theileria spp. were detected in 8% and 18%, respectively, of ticks (n=79) removed from mammals. of the ticks removed from snakes (n=24), 96% were infected with hepatozoon spp., but none were infected with theileria. phylogenetic analysis revealed that hepatozoon spp. detected from dermacentor astrosignatus and dermacentor auratus ticks from ... | 2015 | 25736475 |
| regulation of prolactin secretion by hypothalamus in some cold blooded vertebrates. | effect of homoplastic hypothalamic extract (hhe) on the release of prolactin from the pituitary gland of three aquatic animals -- the fish, clarias batrachus, the amphibian, rana tigrina and the reptile, natrix piscator was studied. release of prolactin from the pituitary gland in the above animals was blocked within 4 hours by cg 603 (100 microgram/g body wt.) injection. administration of hhe and perphenazine (15 microgram/g body wt.) in such animals resulted in significantly increased level of ... | 1980 | 7439126 |
| thermoregulatory behavior is widespread in the embryos of reptiles and birds. | recent studies have demonstrated that thermoregulatory behavior occurs not only in posthatching turtles but also in turtles prior to hatching. does thermoregulatory behavior also occur in the embryos of other reptile and bird species? our experiments show that such behavior is widespread but not universal in reptile and bird embryos. we recorded repositioning within the egg, in response to thermal gradients, in the embryos of three species of snakes (xenochrophis piscator, elaphe bimaculata, and ... | 2014 | 24561606 |
| karyological studies on six species of indian snakes (colubridae: reptilia). | detailed chromosomal analyses have been carried on six species of snakes, viz. ahaetulla nasutus, chrysopelea ornata, dendrelaphis ahaetulla, xenochrophis piscator, enhydris enhydris and acrochordus granulatus. on the basis of these studies, evidence is presented to show that inversions, and in some instances centric fissions and translocations, have played an important role in bringing about structural repatterning in this group, and that the subfamily acrochordinae is the most primitive, so fa ... | 1980 | 7428439 |
| differential suppressive effects of testosterone on immune function in fresh water snake, natrix piscator: an in vitro study. | reptiles represent the crucial phylogenetic group as they were the ancestors of both birds and mammals hence very important to study. the objectives of the present study were to investigate the potential roles of testosterone in the innate immune responses and splenic lymphocyte proliferation in fresh water snake, natrix piscator. animals were mildly anesthetized and spleens were taken out to study the splenic macrophage phagocytosis, super oxide production and nitrite release using in vitro tes ... | 2014 | 25101765 |
| embryonic growth and mobilization of energy and material during incubation in the checkered keelback snake, xenochrophis piscator. | we collected 20 checkered keelback snakes (xenochrophis piscator) to study embryonic growth and mobilization of energy and material during incubation. females laid eggs between late may and late june. the eggs were incubated at 27 degrees c (+/-0.3). one egg from each clutch was dissected at five-day intervals starting at oviposition. the mean incubation length at 27 degrees c was 48.9 days. we identified three phases of embryonic growth or yolk depletion in x. piscator. phase 1, between oviposi ... | 2009 | 18930161 |
| effect of various vitamin d metabolites on serum calcium and inorganic phosphate in the freshwater snake natrix piscator. | vitamin d3 (650 pmol and 6.50 nmol/100 g body wt), 25-hydroxyvitamin d (650 pmol and 6.50 nmol/100 g body wt), and 1,25-dihydroxyvitamin d (65 pmol and 650 pmol/100 g body wt) were administered daily to the freshwater snake natrix piscator for 15 days. both serum calcium and inorganic phosphate levels were increased significantly in all of the treated groups. this is the first report of hypercalcemia and hyperphosphatemia in reptiles induced by 25-hydroxyvitamin d and 1,25-dihydroxyvitamin d. | 1995 | 8575658 |
| influence of prolactin administration on the ultimobranchial body and parathyroid glands of the freshwater snake, natrix piscator. | the effects of ovine prolactin (10 i.u./100 g body wt) on the ultimobranchial body and parathyroid glands were investigated in natrix piscator for 15 days. the ultimobranchial body of the prolactin treated specimens depicts signs of increased activity whereas the parathyroid glands exhibit reduced activity. | 1994 | 7936558 |
| ultimobranchial body and parathyroid glands of the freshwater snake natrix piscator in response to vitamin d3 administration. | vitamin d3 (20 i.u./100 g body wt) was administered to the freshwater snake natrix piscator for 15 days. elevation of serum calcium and inorganic phosphate levels was observed after the treatment. the ultimobranchial body became active whereas the parathyroid glands exhibited reduced activity. | 1992 | 1322444 |
| effect of pinealectomy on annual testicular cycle of indian chequered water snake, natrix piscator. | pinealectomy for 60 days (noted every month of the year), in the tropical indian chequered water snake. natrix piscator, caused inhibition of testicular growth during late progressive and active phases and retarded the rate of regression during regressive phase; during sexually inactive phase the testes remain partially active. the weight of the accessory sex organs, vas deferens, and kidney (along with the renal sex segment activity) followed the same pattern as that of the testes. thus, it may ... | 1989 | 2591715 |
| effect of melatonin and 5-methoxytryptamine administration on the testis and pineal gland activity of the fresh-water snake, natrix piscator. | effects of melatonin (amt) and 5-methoxytryptamine (mt) were studied on the testicular activity cycle of the fresh-water snake, natrix piscator. the subcutaneous implantation and the injections (morning as well as evening) of these two methoxyindoles prevented testicular recrudescence, retarded the testicular active phase, and accelerated the rate of regression of testes, while having no effect on the inactive testes. contrary to this, these two compounds increased the pineal gland weight during ... | 1988 | 3272549 |
| calcitonin effects on serum calcium level of the freshwater snake, natrix piscator. | | 1986 | 3956995 |
| serum calcium level of freshwater snake, natrix piscator, in response to vitamin d3 administration. | the effect of i.m. injection of vitamin d3 (25 iu/100 g b.wt) on serum calcium level was investigated in natrix piscator. this treatment evokes hypercalcemia at day 3 which progresses up to day 5. thereafter, a decline was observed in the serum calcium level at day 10 and day 15. | 1986 | 3020236 |
| ultimobranchial gland of the freshwater snake natrix piscator schneider. | | 1982 | 7129077 |
| thyroid function in adrenaline-induced changes in the intermediary metabolism of the chequered water-snake (natrix piscator). | injection of adrenaline in ten daily doses of 100 micrograms each into the chequered water-snake, natrix piscator, stimulated glycogenolysis and lipid esterification in the liver and lipolysis in the adipose tissue of control snakes. in both thyroidectomized and control snakes plasma protein levels decreased significantly after hormone treatment, although there was no change in concentrations of muscle glycogen and plasma lactic acid. in thyroidectomized snakes, the hormone stimulated oxidation ... | 1982 | 7119645 |
| seasonal variation in the oxygen consumption of tissues in the water snake natrix piscator with special reference to hibernation. | | 1980 | 7390550 |
| effect of parathyroidectomy in the water snake, natrix piscator. | | 1979 | 499763 |
| annual variation and role of male hormone in the renal beta-glucuronidase activity of the chequered water snake, natrix piscator. | | 1977 | 832810 |
| effect of thyroidectomy, i-thyroxine and temperature on hemopoiesis in the chequered water snake, natrix piscator. | | 1976 | 992339 |
| effects of thyroid hormone on the chemical constituents of different tissues of the chequered water-snake, natrix piscator. | | 1975 | 1205121 |
| hemopoietic response to male hormone in the chequered water-snake, natrix piscator. | | 1975 | 1205119 |
| metabolic effects of testosterone in the chequered water-snake, natrix piscator. | in the water-snake, natrix piscator, the following are depressed by orchidectomy and restored to normal by testosterone treatment: glucose, free and esterified fatty acids and triglycerides in plasma, hepatic triglycerides, and total esterified fatty acids. the increase in hepatic free fatty acids and muscle glycogen was also reduced to the level found in intact snakes. moreover, although castration had no effect, testosterone caused a significant increase in liver weight and plasma protein, and ... | 1975 | 1151231 |
| variations in thyroid activity and respiratory rate during a 24-hr period and role of testosterone and thyroxine on the oxidative metabolism of the water snake, natrix piscator. | | 1975 | 48490 |
| changes of glucose metabolism after thyroidectomy in chequered water snake (natrix piscator). | thyroidectomy reduced the rate of removal of glucose from the blood of the chequered water snake (natrix piscator) maintained at 40 +/- 2.0 degrees c. | 1975 | 1084275 |
| effects of administration of cortisone and hydrocortisone in the water snake, natrix piscator (russell). | | 1974 | 4615064 |
| effects of thyroidectomy on the chequered water-snake, natrix piscator. | | 1974 | 4823255 |
| w chromosome in the indian water snake (checkered keel back) natrix piscator (colubridae). | | 1968 | 5637627 |
| molecular identification of three indian snake species using simple pcr-rflp method. | three endangered indian snake species, python molurus, naja naja, and xenochrophis piscator are known to be significantly involved in illegal trade. effective authentication of species is required to curb this illegal trade. in the absence of morphological features, molecular identification techniques hold promise to address the issue of species identification. we present an effective pcr-restriction fragment length polymorphism method for easy identification of the three endangered snake specie ... | 2010 | 20384921 |
| morphologic and morphometric characteristics of ascaroid worm, ophidascaris piscatori in xenochrophis piscator snake in sidoarjo, indonesia. | the study was conducted to describe the morphology and morphometry of nematode worm in the stomach of xenochrophis piscator snake macroscopically and microscopically using light and scanning electron microscopy (sem). | 2018 | 30250378 |
| effect of castration and of male hormone administration on the tissue respiration and thyroid activity of the checkered water snake, natrix piscator. | | 1974 | 4817325 |
| photoperiodic manipulation modulates the innate and cell mediated immune functions in the fresh water snake, natrix piscator. | objectives of the current work were to investigate the role of photoperiod and melatonin in the alteration of immune responses in a reptilian species. animals were kept on a regimen of short or long days. blood was obtained and leucocytes were isolated to study various innate immune responses. lymphocytes were separated from blood by density gradient centrifugation and were used to study proliferation. respiratory burst activity was measured through nitrobluetetrazolium reduction assay while nit ... | 2020 | 32895425 |
| daily and seasonal rhythms in immune responses of splenocytes in the freshwater snake, natrix piscator. | present study was designed to examine daily and seasonal variability in the innate immune responses of splenocytes in the fresh water snake, natrix piscator. animals were mildly anesthetized and spleen was aseptically isolated and processed for macrophage phagocytosis, nbt reduction, nitrite production, splenocyte proliferation and serum lysozyme activity. samples were collected at seven time points, viz., 0000, 0400, 0800, 1200, 1600, 2000 and 0000 h during three different seasons, namely summe ... | 2015 | 25723391 |