In experimental ecosystems that accommodate perch fry (Perca fluviatilis), significant structural changes within the benthic communities occurred under the effect of fish feeding on oligochaetes and on the larvae of chidonomids and other insects. Perch fry began to consume benthic animals at early developmental stages (C1-C2). The transition to regular feeding under experimental condition occurred at the D2-E stage (days 30-40), when the benthic community reached a developmental peak. The quantitative parameters characterizing the compositions of perch stomach contents and the main groups of zoobenthos closely correlated with each other. The dynamics of quantitative parameters of these animal groups (except for mollusks) proved to be determined both by the specific features of their life cycles and by the degree of consumption.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Transcriptome analysis reveals the importance of phototransduction during the first-feeding in mandarin fish (Siniperca chuatsi).
Funct Integr Genomics
October 2024
College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, No.1, Shizishan Street, Hongshan District, Wuhan, Hubei, 430070, China.
The mandarin fish (Siniperca chuatsi), as a typical freshwater carnivorous fish, has high economic value. Mandarin fish have a peculiar feeding habit of feeding on other live fry during the first-feeding period, while rejecting zooplankton or particulate feed, which may be attributed to the low expression of zooplankton-associated gene sws1 in mandarin fish. The domesticated strain of mandarin fish could feed on Artemia at 3 days post hatching (dph).
View Article and Find Full Text PDFNursing of Pike-Perch () in Recirculating Aquaculture System (RAS) Provides Growth Advantage in Juvenile Growth Phase.
Animals (Basel)
January 2023
Research Centre of Aquaculture and Fisheries, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Anna-Liget Str. 35, H-5540 Szarvas, Hungary.
This study aimed to estimate the efficacy of two pike-perch juvenile production technologies: exclusive Recirculating Aquaculture System (RAS) culture (the RAS group) and pond larviculture with a transfer to the RAS at the 42nd day post-hatch (DPH). Both direct weaning on dry feed (the Pond-D group) and 10-day gradual weaning using bloodworms (the Pond-B group) after transfer to the RAS were evaluated in pond-nursed fry. Their survival and morphometric indices were monitored after the RAS habituation period (first 10 days), after the 18-day post-habituation period and after an additional 30 days of on-grow.
View Article and Find Full Text PDFMandarin fish (Sinipercidae) genomes provide insights into innate predatory feeding.
Commun Biol
July 2020
College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, Wuhan, China.
Mandarin fishes (Sinipercidae) are piscivores that feed solely on live fry. Unlike higher vertebrates, teleosts exhibit feeding behavior driven mainly by genetic responses, with no modification by learning from parents. Mandarin fishes could serve as excellent model organisms for studying feeding behavior.
View Article and Find Full Text PDFSystemic infection in European perch with thermoadapted virulent Aeromonas salmonicida (Perca fluviatilis).
J Fish Dis
May 2019
Centre for Fish and Wildlife Health, University of Bern, Bern, Switzerland.
In non-salmonid fish, Aeromonas salmonicidacan cause local infections with severe skin ulcerations, known as atypical furunculosis. In this study, we present a systemic infection by a virulent A. salmonicidain European perch (Perca fluviatilis).
View Article and Find Full Text PDFBiochemical effects of commercial feedstuffs on the fry of climbing perch () and its impact on Swiss albino mice as an animal model.
Toxicol Rep
April 2018
Department of Genetic Engineering and Biotechnology, Faculty of Biological Science and Technology, Jessore University of Science and Technology, Jessore, 7408, Bangladesh.
This study assesses the biochemical effects of commercially available fish feedstuffs on the fry of climbing perch (). Subsequently, its impact on experimental animal, Swiss albino mice, is also examined. In order to access the impact of commercial fish feed and feed consumption fish on the experimental animal, the proximate, biochemical and histopathological analyses were done using standard methods.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!