Diet, stable isotopes and morphology of Eurasian perch (Perca fluviatilis) in littoral and pelagic habitats in the northern Baltic Proper

Mustamäki, Noora; Cederberg, Tommy Licht; Mattila, Johanna

doi:10.1007/s10641-013-0169-8

Cited by 35 publications

(28 citation statements)

References 37 publications

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“…Perch were used because they are a common predatory fish in the Baltic Sea and also a main fish predator of sticklebacks in the area where we collected the fish (e.g., Gross 1978;Mustamäki et al 2014;Byström et al 2015). Several aspects make the threespine stickleback an ideal species for this study.…”

Section: Study Speciesmentioning

confidence: 99%

Resemblance to the Enemy’s Eyes Underlies the Intimidating Effect of Eyespots

Kjernsmo

Merilaita

2017

The American Naturalist

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/pure/about/ebr-terms Online enhancement: appendix.abstract: Eyespots of some prey are known to deter predators, but the reason for this response has not yet been established, and thus the taxonomically widespread occurrence of this color pattern has remained an evolutionary conundrum. Two alternative hypotheses propose that (1) the eyelike appearance of the pattern falsely indicates the presence of the predator's own enemy or (2) predators are hardwired to be cautious toward conspicuous prey. Earlier research has pertained mainly to eyespots in butterflies. Here we tested the hypothesis that eyespots resemble eyes by utilizing the lateral position of eyes in fishes. This allowed us to produce eyelike displays that did not have the round appearance of eyespots. Our study indicates that eye mimicry is an important factor evoking hesitation in predators. Moreover, we present direct evidence that this is because predators associate eyelike displays with the threat posed by their own enemies.

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Section: Study Speciesmentioning

confidence: 99%

Resemblance to the Enemy’s Eyes Underlies the Intimidating Effect of Eyespots

Kjernsmo

Merilaita

2017

The American Naturalist

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“…The European perch, Perca fluviatilis (L.), is an omnivorous predator, and its diet varies depending on the habitat, turbidity, and food availability. Generally, the juvenile perch feeds on zooplankton and gradually shifts to a diet of macroinvertebrates and fish (Mustamäki et al 2013). This species also changes habitats during the ontogeny (from the pelagic zone to the littoral zone) (Olin et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Concentrations of 18 Elements in Muscle, Liver, Gills, and Gonads of Sichel (Pelecus cultratus), Ruffe (Gymnocephalus cernua), and European Perch (Perca fluviatilis) in the Danube River near Belgrade (Serbia)

Subotić

Višnjić-Jeftić

Spasić

et al. 2015

Water Air Soil Pollut

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The analysis of 18 elements in muscle, liver, gills, and gonads of sichel (Pelecus cultratus), ruffe (Gymnocephalus cernua), and European perch (Perca fluviatilis), caught at a polluted segment of the Danube River near Belgrade, was carried out with the aim to expand the knowledge about the ecotoxicology of these species for monitoring purposes and the possible impact on human health. Generally, the elemental concentration significantly differed between species and tissues (p<0.0001), and a statistical interaction between these two factors was observed (p<0.0001). In muscle and liver, concentrations of Hg and Se were statistically higher in ruffe than in sichel and European perch. In gills, statistically highest concentrations of Mn, Sr, and Zn were found in sichel, and of Fe in European perch. In gonads, statistically highest concentrations of As were detected in sichel, of Zn in ruffe, and of Mn and Mo in European perch. The highest number of coefficients of partial correlations between fish weight and element levels was found in sichel (11 in total). Of all analyzed elements, Al and B had the highest number of partial correlations in tissues. The levels of Hg exceeded the maximum acceptable concentration (0.5 mg kg −1 ) in all muscle samples, which can pose a risk for human consumption. Different diet preferences of the investigated fish species resulted in a different accumulation of elements in tissues, and ruffe (as a species that consume mainly benthic macroinvertebrates) accumulated the highest level of Hg, which makes it suitable for monitoring of this element in water bodies.

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“…() and Mustamäki et al . () and the age 1+ year P . fluviatilis that are in focus for this study feed primarily on mysid shrimps and benthic invertebrates.…”

Section: Introductionmentioning

confidence: 64%

“…There are several previous studies showing that P . fluviatilis are reasonably sedentary (Bergek & Björklund, ; Bergek et al ., ) and may specialize on a demersal or more pelagic life (Hjelm et al ., ; Svanbäck & Eklöv, ; Mustamäki et al ., ).…”

Section: Discussionmentioning

confidence: 99%

“…Site fidelity may make fishes respond to local environmental conditions and has been reported to induce morphological differences in P . fluviatilis (Svanbäck & Persson, ; Olsson & Eklöv, ; Olsson et al ., ; Faulks et al ., ) due to differences in diet (Hjelm et al ., ; Svanbäck & Eklöv, ; Mustamäki et al ., ) and predation pressure (Eklöv & Svanbäck, ). Hence, body condition can be an important tool when studying feeding ranges as P .…”

Section: Introductionmentioning

confidence: 99%

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

Bergendahl

Holliland

Hansson

et al. 2017

Journal of Fish Biology

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Using the widespread Eurasian perch Perca fluviatilis as a model organism, feeding ranges were investigated using stable-isotope ratios (δ N and δ C) and body condition. Differences were found between closely located sampling sites in a littoral area without obvious migration barriers, indicating that individual fish had small feeding ranges. Body condition differences between sampled stations were consistent over 4 years. Such sedentary behaviour is important to consider in, e.g. fisheries management and environmental monitoring, as local catch regulations may be meaningful or geographic stability in sampling locations may reduce noise in data.

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Diet, stable isotopes and morphology of Eurasian perch (Perca fluviatilis) in littoral and pelagic habitats in the northern Baltic Proper

Cited by 35 publications

References 37 publications

Resemblance to the Enemy’s Eyes Underlies the Intimidating Effect of Eyespots

Resemblance to the Enemy’s Eyes Underlies the Intimidating Effect of Eyespots

Concentrations of 18 Elements in Muscle, Liver, Gills, and Gonads of Sichel (Pelecus cultratus), Ruffe (Gymnocephalus cernua), and European Perch (Perca fluviatilis) in the Danube River near Belgrade (Serbia)

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

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