Effects of organic and inorganic lead on the oxygen equilibrium curves of the fresh water field crab,Barytelphusa guerini

  title={Effects of organic and inorganic lead on the oxygen equilibrium curves of the fresh water field crab,Barytelphusa guerini},
  author={Sudheer Tulasi and J. V. Ramana Rao},
  journal={Bulletin of Environmental Contamination and Toxicology},
  • S. Tulasi, J. V. Ramana Rao
  • Published 1 February 1989
  • Chemistry, Medicine
  • Bulletin of Environmental Contamination and Toxicology
Haemocyanin serves as normal transporter of oxygen in many Arthropods. The oxygen equilibrium curves have been described for the haemocyanins of many Arthropods and Molluscs. Oxygen equilibrium curves of the blood reveal the relationship between the oxygen tension and the percentage saturation of the haemocyanin. The shape of the oxygen equilibrium curves vary in position from sigmoid to hyperbolic in different animals or even undulatory as shown in some chitons. Oxygen equilibrium curves are… 
Effect of Cadmium and Zinc Salts on Energy Metabolism and Survival of Unio tumidus Philipsson
  • P. Kaspler
  • Chemistry, Medicine
    Journal of basic and clinical physiology and pharmacology
  • 1999
It can be suggested that Cd is more toxic due to late- term decrease in oxygen consumption whereas Zn resulted only in transient early-term decrease, and late-term activation of aerobic metabolism.
Respiratory, acid–base and metabolic responses of the freshwater crayfish Cherax destructor to lead contamination
There was almost no change in the acid–base status of Pb impacted crayfish in comparison to controls, which strongly suggests that Pb promotes a hypometabolic state as well as an elevation of the threshold P O 2 at which anaerobiosis would be initiated.
Effects of lead nitrate on oxygen consumption of fresh water prawn, Macrobrachium dayanum (Crustacea-Decapoda)
Freshwater prawn, Macrobrachium dayanum were subjected to acute concentration, 116.46 mg/l (96 hr LC50 value) and sub-acute concentration, 29.12 mg/l (25% of 96 hr LC50 value) of lead nitrate to
A Human Health Risk Assessment of Heavy Metal Bioaccumulation in Nile Tilapia Oreochromis niloticus from Lake Chivero, Zimbabwe
Lake Chivero’s catchment covers the urban areas of Harare and Chitungwiza, which contribute immensely to the pollution of the lake through urban runoff, sediments, sewage effluents, industrial


Acid-base balance and blood gas changes in the fresh water field crab,Barytelphusa guerini, on exposure to organic and inorganic lead
The haemolymph of the fresh water crab was found to accumulate high amounts of lead on exposure to organic and inorganic lead, so the present investigation has been undertaken to study the ha Hemolymph acid-base status on Exposure to subtoxic levels of organic andinorganic lead.
Lead uptake and lead loss in the fresh water field crab,Barytelphusa guerini, on exposure to organic and inorganic lead
The present investigation has been undertaken to study the uptake and loss of lead on exposure to subtoxic levels or organic and inorganic lead.
Hemocyanin synthesis during hypo-osmotic stress in the shore crab Carcinus maenas (L.)
A possible osmoregulatory function for hemocyanin is suggested in terms of information obtained in the present study and current findings relative to amino-acid metabolism during hypo-osmotic stress.
It seems possible that calcium may play a role in modifying the oxygen transport function of hemocyanin by changing the degree of aggregation, since the calcium concentration in crayfish blood changes during the molting cycle.
Uptake and metabolism of lead and cadmium in coho salmon (Oncorhynchus kisutch).
Coho salmon exposed to water-borne lead and cadmium accumulated relatively high concentrations of each metal in gills, liver and kidney (primarily the posterior segment), where substantial proportions were bound to proteins of 8900 molecular weight.
The Respiratory Characteristics of Chiton Hemocyanins
The present study attempts to characterize the properties of the hemocyanins of the chitons and, by comparison with the blood of cephalopods, the Amphineura, to determine their evolutionary relationships among the classes of mollusks.
Physiological properties of the blood and haemocyanin of the scorpion Heterometrus pulvipes.
There is a normal Bohr effect from pH 10 → 8 and a reverse Bohr effects from pH 8 → 6.
Hemocyanin synthesis in the American lobster, Homarus americanus
Stressing lobsters by replacing 40–80% of their hemolymph volume with physiological saline or by placing lobsters in 50% seawater for 8 hr did not induce hemocyanin biosynthesis, and in vitro incorporation of [14C]aspartic acid into proteins by tissue extracts, followed by hemOCyanin immunoprecipitation, indicated the hepatopancreas is the site of hemcyanin synthesis.
Long-Term Effects of Lead Exposure on Three Generations of Brook Trout (Salvelinus fontinalis)
Exposure of three generations of brook trout (Salvelinus fontinalis) to mean total lead concentrations showed that all second-generation trout exposed to 235 and 474 μg Pb/liter showed positive responses to lead.
Comparative physiology: blood pigments.
  • C. Manwell
  • Chemistry, Medicine
    Annual review of physiology
  • 1960