Feeding range of age 1+ year Eurasian perch <i>Perca fluviatilis</i> in the Baltic Sea

Bergendahl, Ida Ahlbeck; Holliland, Per B.; Hansson, Sture; Karlöf, Oliver

doi:10.1111/jfb.13285

Cited by 4 publications

(2 citation statements)

References 36 publications

(83 reference statements)

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“…Perch was sampled at two locations (Kalmar,56 • 40.306 N;16 • 21.578 E and Figeholm,57 • 22.321 N;16 • 33.340 E) separated by a swimming distance of approximately 80 km along the southeast Baltic coast of Sweden. This spatial separation exceeds the general dispersal pattern and home ranges (∼20 km) of Baltic Sea perch (Craig, 2000;Ahlbeck Bergendahl et al, 2017;Hansson et al, 2019) such that the locations likely harbor specific host populations with non-overlapping home ranges. This is also supported by comparisons of microsatellite data from Baltic Sea perch, including our study area, that show genetic clusters (populations) at a much finer spatial resolution than our two locations (Bergek and Björklund, 2009;Olsson et al, 2011).…”

Section: Study Systemmentioning

confidence: 86%

Fish Skin Microbiomes Are Highly Variable Among Individuals and Populations but Not Within Individuals

et al. 2022

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Fish skin-associated microbial communities are highly variable among populations and species and can impact host fitness. Still, the sources of variation in microbiome composition, and particularly how they vary among and within host individuals, have rarely been investigated. To tackle this issue, we explored patterns of variation in fish skin microbiomes across different spatial scales. We conducted replicate sampling of dorsal and ventral body sites of perch (Perca fluviatilis) from two populations and characterized the variation of fish skin-associated microbial communities with 16S rRNA gene metabarcoding. Results showed a high similarity of microbiome samples taken from the left and right side of the same fish individuals, suggesting that fish skin microbiomes can be reliably assessed and characterized even using a single sample from a specific body site. The microbiome composition of fish skin differed markedly from the bacterioplankton communities in the surrounding water and was highly variable among individuals. No ASV was present in all samples, and the most prevalent phyla, Actinobacteria, Bacteroidetes, and Proteobacteria, varied in relative abundance among fish hosts. Microbiome composition was both individual- and population specific, with most of the variation explained by individual host. At the individual level, we found no diversification in microbiome composition between dorsal and ventral body sites, but the degree of intra-individual heterogeneity varied among individuals. To identify how genetic and phenotypic characteristics of fish hosts impact the rate and nature of intra-individual temporal dynamics of the skin microbiome, and thereby contribute to the host-specific patterns documented here, remains an important task for future research.

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Section: Study Systemmentioning

confidence: 86%

Fish Skin Microbiomes Are Highly Variable Among Individuals and Populations but Not Within Individuals

et al. 2022

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“…Perch forms local populations along the coast, with genetic, growth and condition differences over short distances (Hansson, 1985;Bergek and Björklund, 2009;Bergek et al, 2010;Ahlbeck Bergendahl et al, 2017). These local populations are potentially responsive to changes in local exploitation pressure.…”

Section: Supplement 4 -Review Of Published Studies On Cormorant Preda...mentioning

confidence: 99%

Competition for the fish – fish extraction from the Baltic Sea by humans, aquatic mammals, and birds

Hansson

Bergström

Bonsdorff

et al. 2017

ICES Journal of Marine Science

107

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Seals and fish-eating birds have increased in the Baltic Sea and there is concern that they compete with fisheries. Using data from around year 2010, we compare consumption of different fish species by seals and birds to the catch in the commercial and recreational fishery. When applicable this is done at the geographical resolution of ICES subdivisions. Predation by birds and mammals likely has limited impact on the populations of the commercially most important species (herring, sprat, and cod). In the central and southern Baltic, seals and birds consume about as much flatfish as is caught by the fishery and competition is possible. Birds and seals consume 2-3 times as much coastal fish as is caught in the fishery. Many of these species are important to the fishery (e.g. perch and whitefish) and competition between wildlife and the fishery is likely, at least locally. Estimated wildlife consumption of pike, sea trout and pikeperch varies among ICES subdivisions and the degree of competition for these species may differ among areas. Competition between wildlife and fisheries need to be addressed in basic ecosystem research, management and conservation. This requires improved quantitative data on wildlife diets, abundances and fish production.

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Site fidelity in perch (Perca fluviatilis) and roach (Rutilus rutilus) in two Baltic Sea coastal areas

Hansson

Larsson

Walve

2019

Estuarine, Coastal and Shelf Science

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Feeding range of age 1+ year Eurasian perch Perca fluviatilis in the Baltic Sea

Cited by 4 publications

References 36 publications

Fish Skin Microbiomes Are Highly Variable Among Individuals and Populations but Not Within Individuals

Fish Skin Microbiomes Are Highly Variable Among Individuals and Populations but Not Within Individuals

Competition for the fish – fish extraction from the Baltic Sea by humans, aquatic mammals, and birds

Site fidelity in perch (Perca fluviatilis) and roach (Rutilus rutilus) in two Baltic Sea coastal areas

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