Feeding under predation risk: potential sex-specific response of perch (Perca fluviatilis)

2013 ◽  
Vol 23 (3) ◽  
pp. 478-480 ◽  
Author(s):  
Satu Estlander ◽  
Leena Nurminen
Keyword(s):  
Predation Risk ◽  
Perca Fluviatilis ◽  
Specific Response ◽  
Perch Perca Fluviatilis ◽  
Risk Potential

Predation risk and competition affect habitat use of adult perch, Perca fluviatilis

2020 ◽  
Vol 96 (3) ◽  
pp. 669-680
Author(s):  
Christina Henseler ◽  
Marie C. Nordström ◽  
Anna Törnroos ◽  
Martin Snickars ◽  
Erik Bonsdorff
Keyword(s):  
Habitat Use ◽  
Predation Risk ◽  
Perca Fluviatilis ◽  
Perch Perca Fluviatilis

Individual responses to predation risk and food density in perch (Perca fluviatilis L.)

1997 ◽  
Vol 75 (12) ◽  
pp. 2027-2035 ◽  
Author(s):  
A. C. W. Utne ◽  
E. Brännäs ◽  
C. Magnhagen
Keyword(s):  
Predation Risk ◽  
Perca Fluviatilis ◽  
Individual Characteristics ◽  
Food Distribution ◽  
Food Density ◽  
Patch Choice ◽  
Stage Of Development ◽  
Perch Perca Fluviatilis ◽  
Mature Fish ◽  
Slow Growing

Perch, Perca fluviatilis, of different sizes and ages were allowed to choose between two feeding patches differing in food ratio and (or) predation risk (presence versus absence of a pike, Esox lucius). The aim of our study was to test whether food-patch choice and risk-taking behaviour (time with the predator present) were related to size, phenotype (fast- versus slow-growing) and (or) stage of development (mature versus immature). Movements of individual fish were continuously monitored with an automatic system employing passive integrated transponder (PIT) tags. Food distribution did not seem to be important in determining perch distribution. Predation risk, however, had a significant influence. The presence of a predator in a patch significantly reduced the proportion of time spent in that feeding patch by all perch. However, the strength of this effect was dependent on individual characteristics, both the slow-growing phenotype and the mature fish spending a significantly lower proportion of time in the risky patch than the fast-growing and immature fish. Switching rates, which differed between character groups, also had an effect on growth rate, varying with predation risk.

scholarly journals Personalities in a crowd: What shapes the behaviour of Eurasian perch and other shoaling fishes?

2012 ◽  
Vol 58 (1) ◽  
pp. 35-44 ◽  
Author(s):  
Carin Magnhagen
Keyword(s):  
Decision Making ◽  
Predation Risk ◽  
Fish Species ◽  
Public Information ◽  
Perca Fluviatilis ◽  
Individual Characteristics ◽  
Eurasian Perch ◽  
Perch Perca Fluviatilis ◽  
Consensus Decision Making ◽  
Consensus Decision

Abstract Lately, there has been an increasing interest in intraspecific variation in behaviour, and numerous studies on personality have been performed in a variety of animals, including several fish species. Individuals have been divided into coping style categories or arranged along a behaviour gradient, such as the bold/shy continuum. However, many fish species live in groups, and the social environment can influence the behaviour of an animal in different ways. There may be conflicts within groups due to competition for resources, and dominance hierarchies are commonly found. On the other hand, there are many benefits of consensus decision-making within the group. Conformity of behaviour is probably adaptive, due to the benefit of public information on, for example, food resources and predation risk. Accordingly, studies of fish shoals have found evidence of consensus decision-making. Furthermore, factors in the environment, such as predation risk would also influence the behaviour expressed. To be able to understand behaviour patterns in a group of fish, it is necessary to consider the variation of individual characteristics, and how the group, as well as other environmental factors, affects the behaviour of individuals. Here, I will review studies on different aspects of personality within a social context in fish, with a special emphasis on the Eurasian perch Perca fluviatilis.

Consumption of plant material by perch (Perca fluviatilis)

2016 ◽  
Vol 65 (2) ◽  
pp. 95-97 ◽  
Author(s):  
Tomáš Zapletal ◽  
Zdeněk Adámek ◽  
Pavel Jurajda ◽  
Kevin Roche ◽  
Lucie Všetičková ◽  
...  
Keyword(s):  
Plant Material ◽  
Perca Fluviatilis ◽  
Perch Perca Fluviatilis
Sign in / Sign up

Export Citation Format

Share Document