Evidence map›Paper›PMID 34471177›Full record

ArticleScientific reports2021

Contrasting structural complexity differentiate hunting strategy in an ambush apex predator.

Milan Říha, Karl Ø Gjelland, Vilém Děd, Antti P Eloranta, Ruben Rabaneda-Bueno, Henrik Baktoft, Lukáš Vejřík, Ivana Vejříková, Vladislav Draštík, Marek Šmejkal and 6 more

Abstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

16 authors.

Milan ŘíhaBiology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, České Budějovice, Czech Republic. milan.riha@hbu.cas.cz.
Karl Ø GjellandNorwegian Institute for Nature Research (NINA), Tromsö, Norway.
Vilém DědBiology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, České Budějovice, Czech Republic.
Antti P ElorantaDepartment of Biological and Environmental Science, University of Jyväskylä, Jyväskylä, Finland.
Ruben Rabaneda-BuenoBiology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, České Budějovice, Czech Republic.
Henrik BaktoftNational Institute of Aquatic Resources, Technical University of Denmark (DTU Aqua), Vejlsøvej 39, 8600, Silkeborg, Denmark.
Lukáš VejříkBiology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, České Budějovice, Czech Republic.
Ivana VejříkováBiology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, České Budějovice, Czech Republic.
Vladislav DraštíkBiology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, České Budějovice, Czech Republic.
Marek ŠmejkalBiology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, České Budějovice, Czech Republic.
Michaela HolubováBiology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, České Budějovice, Czech Republic.
Tomas JůzaBiology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, České Budějovice, Czech Republic.
Carolyn RostenNorwegian Institute for Nature Research (NINA), Trondheim, Norway.
Zuzana SajdlováBiology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, České Budějovice, Czech Republic.
Finn ØklandNorwegian Institute for Nature Research (NINA), Trondheim, Norway.
Jiří PeterkaBiology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, České Budějovice, Czech Republic.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Structural complexity is known to influence prey behaviour, mortality and population structure, but the effects on predators have received less attention. We tested whether contrasting structural complexity in two newly colonised lakes (low structural complexity lake-LSC; high structural complexity-HSC) was associated with contrasting behaviour in an aquatic apex predator, Northern pike (Esox lucius; hereafter pike) present in the lakes. Behaviour of pike was studied with whole-lake acoustic telemetry tracking, supplemented by stable isotope analysis of pike prey utilization and survey fishing data on the prey fish community. Pike displayed increased activity, space use, individual growth as well as behavioural differentiation and spent more time in open waters in the LSC lake. Despite observed differences between lakes, stable isotopes analyses indicated a high dependency on littoral food sources in both lakes. We concluded that pike in the HSC lake displayed a behaviour consistent with a prevalent ambush predation behaviour, whereas the higher activity and larger space use in the LSC lake indicated a transition to more active search behaviour. It could lead to increased prey encounter and cause better growth in the LSC lake. Our study demonstrated how differences in structural complexity mediated prominent changes in the foraging behaviour of an apex predator, which in turn may have effects on the prey community.

Indexed as

EcosystemFood ChainAnimalsEsocidaeLakesPredatory Behavior

Identifiers

PMID34471177
PMCPMC8410764

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.