geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Effect of selenium on the uptake of methyl mercury across perfused gills of rainbow trout Oncorhynchus mykiss


, : Effect of selenium on the uptake of methyl mercury across perfused gills of rainbow trout Oncorhynchus mykiss. Aquatic Toxicology (amsterdam). 40(4): 361-373,.

The uptake of methyl mercury was measured across the perfused gills of rainbow trout Oncorhynchus mykiss. The effect of selenium, either in the blood (perfusion medium), or in the water was investigated. Methyl mercury was effectively taken up from the water across the gills into the perfusate. The uptake rate reached a stable level after 30 min perfusion. When the gills were placed in mercury free water after exposure to mercury in the water for 1 h, they continued to liberate significant amounts of accumulated mercury into the perfusate. Exposure to selenite (SeIV) or selenate (VI) (0.075-0.75 muM) in the external medium did not affect the uptake of methyl mercury across the gills or the liberation of the metal from the gills. Internal selenite or selenate (7.5 muM) augmented the uptake of methyl mercury across the gills and internal selenite also increased the amounts of liberated methyl mercury from the gills in the unload period. Internal selenium, increased the mercury accumulation in the gills, whereas, external selenium did not alter the mercury accumulation in the gills. Uptake of selenium from the water across the gills occurred very slowly.

US$19.90

DOI: 10.1016/s0166-445x(97)00061-1


Other references

Amlaner, C.J.Jr ; Korzyniowski, R.; Bender, R.; Stout, J.F., 1978: Design of a remotely controlled loco motory platform useful in ethological studies. A platform capable of movement from 1 point to another under remote control was designed for use in behavior studies. Electrical and mechanical design criterion for the platform are discussed, and schematics and engineering drawings are included....

Laskin, D.M.; Greene, C.S., 1972: Influence of the doctor-patient relationship on placebo therapy for patients with myofascial pain-dysfunction (MPD) syndrome. Journal of the American Dental Association 85(4): 892-894

Y.G.ngFu; Zhang ShuiSong; X.J.nSen; Chen Hong; Long XueWu; Feng ZeXing, 1997: Dynamic simulation of nutrient element in Casuarina equisetifolia forest ecosystem. Studies of a 15 year old Casuarina equisetifolia forest ecosystem in Huian, Fujian province, China, showed that 99.5% of the total mass of nutrients in this ecosystem was in the soil layer. The annual absorption of nutrient in the ecosystem was 23...

Tong Jinnan, 1997: A study on the Griesbachian cyclostratigraphy of Meishan Section, Changxing, Zhejiang Province. The Griesbachian of Meishan Section, Changxing County, Zhejiang Province, Southeast China is composed of a series of multilevel cycles of the mudrock-limestone bundles. The composition of the bundles and their stacking patterns are the excellent m...

Fenwick, M.L.; Walker, M.J.; Petkevich, J.M., 1978: On the association of virus proteins with the nuclei of cells infected with herpes simplex virus. In cells infected with herpes simplex virus, HSV-I, newly synthesized polypeptides accumulated in the nucleus at different rates, which did not change during the first 6 h after infection. Canavanine, an arginine analog, prevented the nuclear accu...

Pauerstein C.J., 1974: Current concepts in obstetrics and gynecology the fallopian tube a reappraisal. Current Concepts in Obstetrics And Gynecology The Fallopian Tube A Reappraisal 196

Ward-Smith, A.J.; Radford, P.F., 2000: Energy conversion rates during sprinting with an emphasis on the performance of female athletes. Computed results from a mathematical model of the bioenergetics of sprinting, which incorporates a three-equation representation of anaerobic metabolism, were compared with measured distance-time data for female athletes from the finals of the 100...

Cui, Y.; Zhao, D.H., 1995: Effects of isoprenaline on delayed rectifier potassium current in isolated guinea pig ventricular myocytes. AIM: To study the effects of isoprenaline (Iso) on the delayed rectifier potassium current (I-k) in isolated guinea pig ventricular myocytes. METHODS: Single cells were isolated from guinea pig ventricle. I-k was studied under voltage clamp condit...

Michaelsen Per; Henderson Robert A., 2000: Facies relationships and cyclicity of high-latitude, Late Permian coal measures, Bowen Basin, Australia. The Late Permian Moranbah Coal Measures are developed throughout the northern and central Bowen Basin, eastern Australia, and are subject to large-scale opencut coal mining activity. They were deposited in a rapidly subsiding retroarc foreland bas...

El-Zuway, S.; Farrokhyar, F.; Kachur, E., 2016: Myelopathic signs and functional outcome following cervical decompression surgery: a proposed myelopathy scale. OBJECTIVE Cervical spondylotic myelopathy (CSM) is the most common cause of spinal cord dysfunction in adults. In spite of this, the impact of the changes in myelopathic signs following cervical decompression surgery and their relationship to func...