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Linking behavioural type with cannibalism in Eurasian perch

Andersson, Matilda L. (author)
Uppsala universitet,Institutionen för ekologi och genetik,Lund University
Hulthén, Kaj (author)
Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Akvatisk ekologi,Forskargrupper vid Lunds universitet,Division aquatic ecology,Department of Biology,Faculty of Science,Aquatic Ecology,Lund University Research Groups
Blake, Charlie (author)
Lund University ; Webster University, USA
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Brönmark, Christer (author)
Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Akvatisk ekologi,Forskargrupper vid Lunds universitet,Division aquatic ecology,Department of Biology,Faculty of Science,Aquatic Ecology,Lund University Research Groups
Nilsson, Per Anders, 1968- (author)
Karlstad University,Lunds universitet,Karlstads universitet,Institutionen för miljö- och livsvetenskaper (from 2013),Lund University,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Akvatisk ekologi,Forskargrupper vid Lunds universitet,Division aquatic ecology,Department of Biology,Faculty of Science,Aquatic Ecology,Lund University Research Groups
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 (creator_code:org_t)
2021-12-03
2021
English.
In: PLOS ONE. - : Public Library Science. - 1932-6203. ; 16:12
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The propensity to kill and consume conspecifics (cannibalism) varies greatly between and within species, but the underlying mechanisms behind this variation remain poorly understood. A rich literature has documented that consistent behavioural variation is ubiquitous across the animal kingdom. Such inter-individual behavioural differences, sometimes referred to as personality traits, may have far-reaching ecological consequences. However, the link between predator personality traits and the propensity to engage in cannibalistic interactions remains understudied. Here, we first quantified personality in Eurasian perch (Perca fluviatilis), measured as activity (time spent moving) and sociability (time spent near conspecifics). We then gave perch of contrasting behavioural types the option to consume either conspecific or heterospecific (roach, Rutilus rutilus) prey. Individual perch characterized by a social-active behavioural phenotype (n = 5) selected roach before being cannibalistic, while asocial-inactive perch (n = 17) consumed conspecific and heterospecific prey evenly. Thus, asocial-inactive perch expressed significantly higher rates of cannibalism as compared to social-active individuals. Individual variation in cannibalism, linked to behavioural type, adds important mechanistic understanding to complex population and community dynamics, and also provides insight into the diversity and maintenance of animal personality.

Subject headings

NATURVETENSKAP  -- Biologi -- Ekologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Ecology (hsv//eng)
NATURVETENSKAP  -- Biologi -- Etologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Behavioural Sciences Biology (hsv//eng)

Keyword

sexual cannibalism
population
personality
ecology
fluviatilis
evolution
boldness
Biology
Biologi

Publication and Content Type

ref (subject category)
art (subject category)

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