The influence of zinc and copper on the latency period for feeding and the food uptake in common carp, Cyprinus carpio L.

Кузьмина, В. В.

doi:10.1016/j.aquatox.2010.12.018

Cited by 20 publications

(9 citation statements)

References 36 publications

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“…Similar findings such as apathy, slow movement, and decreased food intake were described in juvenile common carp during the first two weeks of exposure to copper at a concentration of 0.80 µmol/l (50 µg/l) (De Boeck et al 1997). An impairment in feeding behaviour was also observed in common carp exposed to 1 µmol/l (64 µg/l) of copper (Kuzmina 2011).…”

Section: Discussionmentioning

confidence: 80%

Biochemical, haematological and oxidative stress responses of common carp (Cyprinus carpio L.) after sub-chronic exposure to copper

Ševčíková¹,

Modrá²,

Blahová³

et al. 2016

Vet. Med.

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ABSTRACT:The aim of the present study was to investigate the impact of copper-based pesticides (at concentrations of copper of 20, 30, 40 and 70 µg/l) on one-year-old common carp (Cyprinus carpio L.) during 28 days of exposure. Abnormal behaviour was observed in fish exposed to 70 µg/l from Day 14. Histological alterations were noticed only in liver in the groups exposed to 40 and 70 µg/l. Significant changes (P ˂ 0.05) in almost all haematological indices were found, especially in the group exposed to the highest concentration of copper (70 µg/l). Biochemical analysis revealed various significant (P ˂ 0.05) differences among the tested groups. Significant differences in copper tissue concentration (P ˂ 0.05) among groups were found in liver, gills and kidney. Among antioxidative enzymes, significant changes were revealed mainly in catalase and glutathione-S-transferase activity (P ˂ 0.05). In gills, metallothionein content increased significantly (P ˂ 0.05) in the group exposed to the highest copper concentration (70 µg/l) compared with the other tested groups, including the control. A significant (P ˂ 0.05) change in total glutathione content was recorded in liver and gills, although the reduced/oxidised ratio was not affected. Oxidative damage to lipids increased significantly (P ˂ 0.05) with increasing copper concentration in liver and kidney. The results demonstrate the deleterious influence of copper on common carp even at low, environmentally relevant concentrations.

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Section: Discussionmentioning

confidence: 80%

Biochemical, haematological and oxidative stress responses of common carp (Cyprinus carpio L.) after sub-chronic exposure to copper

Ševčíková¹,

Modrá²,

Blahová³

et al. 2016

Vet. Med.

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“…The marked inhibition in the process of spermatogenesis due to Cd and Pb pollution simulates with that described by Mousa and Mousa [24] who found a decline in the gonadal activity as reflected by decreasing of sperm amount in the ripe testis. The high levels of heavy metals may interfere with the release of hormones and disturb the feedback mechanisms of gonadal cycle) [39].…”

Section: Discussionmentioning

confidence: 99%

Impact of Environmental Contaminants on the Testes of Oreochromis niloticus with Special Reference to Ultrastructure of Spermatozoa in Lake Manzala (Egypt)

Shalaby¹,

Migeed²

2012

J Environ Anal Toxicol

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IntroductionThe importance of Nile tilapia, Oreochromis niloticus in aqua cultures is due to its spreading in most countries of the world [1]. It breads in captivity and wide variety of water conditions [2]. Lake Manzalah (LM) is one of the most important lakes in Egypt that provides more than 70% of the total fishery of the country [3] and considered as a highly polluted with toxic heavy metals and pesticides due to progressive increase of industrial and agricultural drainage, as well as sewage out fall from the surrounding governorates [4]. The mean values of some heavy metals (Cd, Pb, Fe, Cr and Mn) recorded in LM were higher than the world permissible levels [5] and according to the Egyptian laws [6]. Such heavy metals are not lethal to fish, but concentrated in their flesh and create a hazard to the consumer [7,8]. Cd, Pb, Zn, and Cr are considered the main causes of pollution in aquatic ecosystem [9]. The serious effect of these metals is derived from their persistence, toxicity and bioaccumulation, and consequently exert dangerous problem to man [10]. Experimental studies on heavy metals proved that they could impair the respiratory functions of the gills; consequently death in fish is probably caused by tissue hypoxia [11]. Metals affect not only the fish morphology, but also all biological activities [12]. Among the heavy metals; Cd and Pb are the serious heavy metals that produce histopathological alterations including liver damage [13], respiratory dysfunctions [14], testicular and ovarian alterations [15][16][17]. These pathological alterations were primarily attributed to damage of cell membranes which allows higher uptake of Cd and Pb and thus the injury extends to more critical targets [18]. Many studies focused on bioaccumulation of heavy metals in fish and biological studies. Thus we aimed in this work to study the testicular histopathological alterations of Oreochromis niloticus using light microscope and the mature sperm using TEM. Materials and Methods Samples collectionSamples of water and 48 specimen of Nile tilapia, Oreochromis niloticus about 14-20 cm in length and 120-200 g in weight were collected from two areas; Demitta branch of RN at Mansoura city as a control site and LM as a polluted area during the spawning season from March-June and transported to the laboratory in tanks provided with oxygen pump. The fish were weighed, dissected and the testes were Abstract Background: Pollution of the aquatic environment by inorganic and organic chemicals is a major factor posing serious threat to the survival of aquatic organisms including fish. Lake Manzala (LM) is one of the Egypt's northern Delta Lakes situated on the Mediterranean Coast of the Delta. It is affected by drainage water polluted by different heavy metals that their concentrations exceed the maximum world permissible levels.

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“…During the past five decades several studies have investigated the effects of various contaminants on fish olfaction, with metals being the most studied class of contaminant. While the effect of copper on olfaction has received most of the attention (Hara et al, 1976;Julliard et al, 1996;Beyers and Farmer, 2001;Baldwin et al, 2003;Carreau and Pyle, 2005;Bettini et al, 2006;Sandahl et al, 2006;Kolmakov et al, 2009;Dew et al, 2012Dew et al, , 2014, other metals such as nickel (Brown et al, 1982;Tallkvist et al, 1998;Dew et al, 2014), zinc (Brown et al, 1982;Cancalon, 1982;Kuz'mina, 2011), and cadmium (Baker and Montgomery, 2001;Scott et al, 2003;Blechinger et al, 2007) have also been studied. Regardless of the extensive efforts to explore the effects of copper on olfaction, the underlying mechanism of olfactory toxicity of copper remains unknown.…”

Section: Introductionmentioning

confidence: 97%

Dietary sodium protects fish against copper-induced olfactory impairment

et al. 2015

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The influence of zinc and copper on the latency period for feeding and the food uptake in common carp, Cyprinus carpio L.

Cited by 20 publications

References 36 publications

Biochemical, haematological and oxidative stress responses of common carp (Cyprinus carpio L.) after sub-chronic exposure to copper

Biochemical, haematological and oxidative stress responses of common carp (Cyprinus carpio L.) after sub-chronic exposure to copper

Impact of Environmental Contaminants on the Testes of Oreochromis niloticus with Special Reference to Ultrastructure of Spermatozoa in Lake Manzala (Egypt)

Dietary sodium protects fish against copper-induced olfactory impairment

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