Pomphorhynchus laevis: The Intestinal Acanthocephalan as a Lead Sink for its Fish Host, Chub (Leuciscus cephalus)

Sures, Bernd; Siddall, Roy

doi:10.1006/expr.1999.4437

Cited by 138 publications

(136 citation statements)

References 17 publications

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“…2). It could be shown in laboratory studies that acanthocephalan infected fish have lower metal levels in their tissues than uninfected conspecifics (Sures & Siddall, 1999;Sures et al, 2003). Similar results are also available from other host-parasite systems (Evans et al, 2001;Bergey et al, 2002).…”

Section: Combined Effects Of Pollutants and Parasitessupporting

confidence: 54%

Environmental Parasitology. Interactions between parasites and pollutants in the aquatic environment

Sures

2008

Parasite

131

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Summary :In recent years there has been an increasing number of papers showing how parasitism and pollution can interact with each other in aquatic organisms. Among the variety of investigated aspects especially the combined effects of pollution and simultaneous infection on the health of aquatic hosts (molluscs, crustaceans, fish, mammals) is of considerable interest. Effects of pollution on the occurrence and distribution of parasites is another interesting field of "Environmental Parasitology" attracting increasing attention. This mini-review presents some promising examples of interdisciplinary studies paying attention to the fact that under natural conditions no organism will only be affected by either parasites or pollution.

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Section: Combined Effects Of Pollutants and Parasitessupporting

confidence: 54%

Environmental Parasitology. Interactions between parasites and pollutants in the aquatic environment

Sures

2008

Parasite

131

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“…Bile-metal complexes formed in the fish liver pass down the bile duct into the small intestine, where in the infected fish acanthocephalans take up bile-bound metals and reduce the amount of metals available for reabsorption by the host. In uninfected fish bile-bound metals can either be reabsorbed by the intestinal wall or, to a lesser extent, excreted with the faeces (Sures and Siddall 1999). Our results indicate that even in the river water with the low metal contamination, P. laevis reduced Cu and Cd levels in the chub gastrointestinal tissue and, therefore, parasites should be taken into account as a potential confounding factor in the environmental risk assessment studies.…”

Section: The Comparison Of Spatial Metal Distribution In the Chub Gasmentioning

confidence: 81%

“…It is evident that site-specific differences were more pronounced in uninfected chub for Cu and Cd, which levels were 6.0 and 1.5 times, respectively, higher than in the chub infected with P. laevis. Previous studies revealed that acanthocephalans can reduce metal levels in the tissues of their hosts (Sures and Siddall 1999;Sures 2008). Bile-metal complexes formed in the fish liver pass down the bile duct into the small intestine, where in the infected fish acanthocephalans take up bile-bound metals and reduce the amount of metals available for reabsorption by the host.…”

Section: The Comparison Of Spatial Metal Distribution In the Chub Gasmentioning

confidence: 99%

Metal Bioavailability in the Sava River Water

Dragun

Marijić

Vuković³

et al. 2014

The Handbook of Environmental Chemistry

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Metals present one of the major contamination problems for freshwater systems, such as the Sava River, due to their high toxicity, persistence, and tendency to accumulate in sediment and living organisms. The comprehensive assessment of the metal bioavailability in the Sava River encompassed the analyses of dissolved and DGT-labile metal species of nine metals (Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) in the river water, as well as evaluation of accumulation of five metals (Cd, Cu, Fe, Mn, and Zn) in three organs (liver, gills and gastrointestinal tissue) of bioindicator organism, fish species European chub (Squalius cephalus L.). This survey was conducted mainly during the year 2006, in two sampling campaigns, in April/May and September, as periods representative for chub spawning and postspawning. Additionally, metal concentrations were determined in the intestinal parasites acanthocephalans, which are known for their high affinity for metal accumulation. Metallothionein concentrations were also determined in three chub organs, as a commonly applied biomarker of metal exposure. Based on the metal concentrations in the river water, the Sava River was defined as weakly contaminated and mainly comparable with unpolluted rivers, which enabled the analyses of physiological variability of metal and metallothionein concentrations in the chub organs, as well as establishment of their constitutive levels.

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“…The fish treated with increasing concentrations of lead nitrate showed varying accumulation of lead as was evident by the whitening of the intestine. Discolouration of the intestine has also been observed in fresh water fish Leuciscus cephalus exposed to cadmium (Sures and Siddall, 1999). However, to determine the extent of accumulation of lead nitrate in the body of the adult fish, estimation of lead in dry weight ash needs to be carried out.…”

Section: Discussion:-mentioning

confidence: 99%

Toxicity Study of Lead Nitrate on Freshwater Fish Cirrhina Mrigala.

Fernandes¹

2016

IJAR

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Chemicals present in the environment tend to alter the physiology of flora and fauna. Heavy metals tend to accumulate in the biosphere by virtue of their non-biodegradable nature. It is known that accumulation of heavy metals in tissues and organs results in cellular and molecular damage in various species (Cestari et al., 2004;Flora et al., 2012). The present study demonstrates the morphological and biochemical effects associated with the accumulation of the heavy metal lead in adult fish, Cirrhina mrigala (Common Indian Carp). Adults of Cirrhina mrigala were exposed to increasing concentrations of lead nitrate for a span of 96 hours, post which anatomical and biochemical changes were monitored. External morphology of adult fish and that of the liver and intestine were also qualitatively examined. The liver of treated fish appeared enlarged and had more mass compared with the control, whereas the intestine showed discolouration indicating ingestion of lead. Enzymes indicating stress and cellular damage were assayed in liver extracts prepared from exposed fish. The enzymes studied were succinate dehydrogenase, alanine transaminase, aspartate transaminase, acid phosphatase and alkaline phosphatase. A significant increase was foundin the activity of all of the enzymes except succinate dehydrogenase probably indicating hepatotoxicity. Succinate dehydrogenase activity was seen to have decreased, possibly indicating oxidative stress. Analysis of the neural marker enzyme acetylcholinesterase in brain extracts from these fish also showed a significant decrease in its activity which could lead to a misregulation in neurotransmission. These results directly reflect on the toxicity caused by accumulation of lead in the adult fish.Copy Right, IJAR, 2016,. All rights reserved.

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Pomphorhynchus laevis: The Intestinal Acanthocephalan as a Lead Sink for its Fish Host, Chub (Leuciscus cephalus)

Cited by 138 publications

References 17 publications

Environmental Parasitology. Interactions between parasites and pollutants in the aquatic environment

Environmental Parasitology. Interactions between parasites and pollutants in the aquatic environment

Metal Bioavailability in the Sava River Water

Toxicity Study of Lead Nitrate on Freshwater Fish Cirrhina Mrigala.

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