Effects of angler’s groundbaits on fish physiology and growth

Abstract Although angler’s groundbaits (GBs) can be an important food resource for fish, we do not know much about the effects of GB consumption on the growth and health of fish. To fill this knowledge gap, we conducted a controlled, six-week long feeding trial (feeding ration: 2% of body weight) wi...

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Main Authors: Dorottya Lilla Fazekas, László Antal, László Ardó, Béla Halasi-Kovács, Zsuzsanna J. Sándor, Zsolt Pirger, Flórián Tóth, Zoltán Vitál, András Specziár, Attila Mozsár
Format: Article
Language:English
Published: Nature Portfolio 2024-11-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-024-79880-4
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author Dorottya Lilla Fazekas
László Antal
László Ardó
Béla Halasi-Kovács
Zsuzsanna J. Sándor
Zsolt Pirger
Flórián Tóth
Zoltán Vitál
András Specziár
Attila Mozsár
author_facet Dorottya Lilla Fazekas
László Antal
László Ardó
Béla Halasi-Kovács
Zsuzsanna J. Sándor
Zsolt Pirger
Flórián Tóth
Zoltán Vitál
András Specziár
Attila Mozsár
author_sort Dorottya Lilla Fazekas
collection DOAJ
description Abstract Although angler’s groundbaits (GBs) can be an important food resource for fish, we do not know much about the effects of GB consumption on the growth and health of fish. To fill this knowledge gap, we conducted a controlled, six-week long feeding trial (feeding ration: 2% of body weight) with common carp at 22 °C (Cyprinus carpio, mean initial body weight: 557 g) to test the effect of two GBs composed mostly of animal-derived ingredients (AN-GBs) and two plant-based GBs (PL-GBs) relative to one aquaculture feed, as a control (five treatment altogether). Consumption of PL-GBs resulted in lower growth rate than AN-GBs, presumably due to the low protein content. However, the unit biomass increment per unit nitrogen input was higher in PL-GBs. Although PL-GBs resulted in reduction of hepatic energy reserves, hepatosomatic index, viscerosomatic index, and body condition did not differ among the treatments. We did not find differences in expression of inflammatory cytokines in the liver. In conclusion, AN-GBs more effectively increases the carrying capacity of fisheries, but fish sequester a higher portion of nitrogen content of PL-GBs –PL-GB input can be more effectively counterbalanced by fish removal. Finally, the GB consumption does not pose a health risk to fish.
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spelling doaj-art-95d023068fdf48aa9806bd4f44f41a132024-11-24T12:26:49ZengNature PortfolioScientific Reports2045-23222024-11-0114111110.1038/s41598-024-79880-4Effects of angler’s groundbaits on fish physiology and growthDorottya Lilla Fazekas0László Antal1László Ardó2Béla Halasi-Kovács3Zsuzsanna J. Sándor4Zsolt Pirger5Flórián Tóth6Zoltán Vitál7András Specziár8Attila Mozsár9Research Center for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life SciencesDepartment of Hydrobiology, University of DebrecenResearch Center for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life SciencesResearch Center for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life SciencesResearch Center for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life SciencesHUN-REN Balaton Limnological Research InstituteMTA-ÖK Lendület “Momentum” Fluvial Ecology Research Group, Institute of Aquatic Ecology, HUN-REN Centre for Ecological ResearchResearch Center for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life SciencesHUN-REN Balaton Limnological Research InstituteHUN-REN Balaton Limnological Research InstituteAbstract Although angler’s groundbaits (GBs) can be an important food resource for fish, we do not know much about the effects of GB consumption on the growth and health of fish. To fill this knowledge gap, we conducted a controlled, six-week long feeding trial (feeding ration: 2% of body weight) with common carp at 22 °C (Cyprinus carpio, mean initial body weight: 557 g) to test the effect of two GBs composed mostly of animal-derived ingredients (AN-GBs) and two plant-based GBs (PL-GBs) relative to one aquaculture feed, as a control (five treatment altogether). Consumption of PL-GBs resulted in lower growth rate than AN-GBs, presumably due to the low protein content. However, the unit biomass increment per unit nitrogen input was higher in PL-GBs. Although PL-GBs resulted in reduction of hepatic energy reserves, hepatosomatic index, viscerosomatic index, and body condition did not differ among the treatments. We did not find differences in expression of inflammatory cytokines in the liver. In conclusion, AN-GBs more effectively increases the carrying capacity of fisheries, but fish sequester a higher portion of nitrogen content of PL-GBs –PL-GB input can be more effectively counterbalanced by fish removal. Finally, the GB consumption does not pose a health risk to fish.https://doi.org/10.1038/s41598-024-79880-4
spellingShingle Dorottya Lilla Fazekas
László Antal
László Ardó
Béla Halasi-Kovács
Zsuzsanna J. Sándor
Zsolt Pirger
Flórián Tóth
Zoltán Vitál
András Specziár
Attila Mozsár
Effects of angler’s groundbaits on fish physiology and growth
Scientific Reports
title Effects of angler’s groundbaits on fish physiology and growth
title_full Effects of angler’s groundbaits on fish physiology and growth
title_fullStr Effects of angler’s groundbaits on fish physiology and growth
title_full_unstemmed Effects of angler’s groundbaits on fish physiology and growth
title_short Effects of angler’s groundbaits on fish physiology and growth
title_sort effects of angler s groundbaits on fish physiology and growth
url https://doi.org/10.1038/s41598-024-79880-4
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