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Nutritive metal uptake in teleost fish
This review will assess physiological, pharmacological and recent molecular evidence to outline possible uptake pathways in the gills and intestine of teleost fish involved in the acquisition of three of the most abundant transition metals necessary for life; iron, copper, and zinc. Expand
2 - Feeding, digestion and absorption of nutrients
This chapter summarizes the current state of knowledge, or lack thereof, highlighting the similarities and differences of fish digestive physiology relative to that of the more well studied mammalian systems. Expand
Dogmas and controversies in the handling of nitrogenous wastes: The effect of feeding and fasting on the excretion of ammonia, urea and other nitrogenous waste products in rainbow trout
The results showed that calculation of the NQ based on total nitrogen excretion may overestimate protein utilisation in aerobic metabolism because of significant excretion of N in the form of proteins and amino acids, whereas the use of summed ammonia-N and urea-N excretion probably underestimates the contribution of protein towards aerobic metabolism. Expand
Physiological characterisation of a pH- and calcium-dependent sodium uptake mechanism in the freshwater crustacean, Daphnia magna
  • C. Glover, C. Wood
  • Chemistry, Medicine
  • Journal of Experimental Biology
  • 1 March 2005
A mechanism of sodium influx in Daphnia magna that involves the electrogenic 2Na+/1H+ exchanger is suggested, in addition to data showing amiloride inhibition of Sodium influx (Ki=180 μmol l–1), which is suggested to be responsible for the increase in whole body sodium levels. Expand
Heterogeneity of natural organic matter amelioration of silver toxicity to Daphnia magna: effect of source and equilibration time.
The present results suggest that heterogeneity of NOM and silver-NOM equilibration time will have to be accounted for in future models of silver toxicity to D. magna and that laboratory toxicity testing using Nom and metals should account for the effects of metal-Nom equilibrations time. Expand
Application of genomics and proteomics for study of the integrated response to zinc exposure in a non-model fish species, the rainbow trout.
Differential screening of a heterologous cDNA array and protein profiling using Surface Enhanced Laser Desorption/Ionisation are concluded that these approaches are viable to non-model species although both have clear limitations. Expand
Calcium/cadmium interactions at uptake surfaces in rainbow trout: waterborne versus dietary routes of exposure.
Results suggest that Ca2+ and Cd share common pathway(s)/transport mechanism(s) in the gill and gut and that increased gastrointestinal Ca2-supplemented uptake likely caused downregulation of branchial and gastrointestinal Ca1+ and therefore Cd uptake pathways. Expand
Assessment of a mussel as a metal bioindicator of coastal contamination: relationships between metal bioaccumulation and multiple biomarker responses.
Tissue and whole organism responses provided insight into the biological stress responses of mussels to metal contaminants, indicating that such measurements could be a useful addition to biomonitoring programmes in NZ. Expand
The influence of salinity on copper accumulation and its toxic effects in estuarine animals with differing osmoregulatory strategies.
Findings indicate that physiology, as opposed to water chemistry, exerts the greatest influence over copper toxicity, and an understanding of the physiological limits of marine and estuarine organisms may be critical for calibration of predictive models of metal toxicity in waters of high and fluctuating salinities. Expand
Impairment of green-lipped mussel (Perna canaliculus) physiology by waterborne cadmium: relationship to tissue bioaccumulation and effect of exposure duration.
Impairments of clearance rates were strongly correlated with tissue Cd accumulation, suggesting that P. canaliculus may be a species useful as an indicator species for trace metal pollution in coastal environments. Expand