Effect of Dietary Metal Exposure on the Locomotor Reactions and Food Consumption in Common Carp Cyprinus carpio (L.)

The effects of dietary zinc, copper or mercury (9.8, 9.5 and 0.66 mg/kg wet weight of forage, respectively) on different aspects of fish feeding behavior in common carp were evaluated. The latency to leave the starting chamber after its front wall was raised ( t 1 ) and latency to feed (latent time...

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Published inInland water biology Vol. 12; no. 3; pp. 356 - 364
Main Authors Kuz’mina, V. V., Komov, V. T., Tarleva, A. F., Sheptitskiy, V. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.07.2019
Springer Nature B.V
Subjects
Aquatic Toxicology
Biodiversity
Biomedical and Life Sciences
Carp
Copper
Cyprinus carpio
Diet
Feeding
Feeding behavior
Feeding habits
Fish
Food
Food consumption
Freshwater & Marine Ecology
Freshwater fishes
Geoecology/Natural Processes
Heavy metals
Larvae
Latency
Life Sciences
Locomotion
Mercury
Mercury (metal)
Metals
Wet weight
Zinc
food consumed
locomotor reactions
mercury
ration
common carp
feeding behavior
copper
zinc
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Summary:The effects of dietary zinc, copper or mercury (9.8, 9.5 and 0.66 mg/kg wet weight of forage, respectively) on different aspects of fish feeding behavior in common carp were evaluated. The latency to leave the starting chamber after its front wall was raised ( t 1 ) and latency to feed (latent time of feeding, t 2 ) as well as the amount of food consumed or ration (the quantity of eaten chironomid larvae for 3 min of observation) were registered. By the end of the experiment under the impact of Hg, the t 1 value increased by 20% and t 2 value increased 5.6 times. The amount of food consumed decreased by 38%. The latency to leave the starting chamber under the impact of metal significantly increased during 20–30 days, followed by decline. The dynamics of the feeding reaction rate under the impact of metal differed: the maximum changes in t 2 value are noted under the impact of Cu: they were increased in the 2nd and 5th decade (3.7 and 6.1 times, respectively). The amount of food consumed in the presence of Zn either increased or remained at the control group level, but under the action of Cu and Hg was in most cases lower (by 37% at the most).
ISSN:1995-0829
1995-0837
DOI:10.1134/S1995082919030106