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Predation risk as a cost of reproduction.
- C. Magnhagen
- BiologyTrends in ecology & evolution
- 1 June 1991
Effects of sex ratio on intra- and inter-sexual behaviour in sand gobies
LATITUDINAL VARIATION IN LIFE-HISTORY TRAITS IN EURASIAN PERCH
In general, growth rates, mortality rates, and reproductive investment decreased with latitude, whereas age at maturity, size at matured, and life span increased with latitude.
Effects of tank colour and light intensity on feed intake, growth rate and energy expenditure of juvenile Eurasian perch, Perca fluviatilis L.
Express your personality or go along with the group: what determines the behaviour of shoaling perch?
- C. Magnhagen, N. Bunnefeld
- Psychology, Environmental ScienceProceedings of the Royal Society B: Biological…
- 22 September 2009
Most fish showed a shyer behaviour when alone, but bolder individuals changed less between treatments than did shyer ones, suggesting a more influential role of bold fish in the group.
Plastic sex-roles in the common goby – the effect of nest availability
It is suggested that nest site availability affects mating competition and courtship roles in the common goby.
Is boldness affected by group composition in young-of-the-year perch (Perca fluviatilis)?
The behaviour of fish of the different personality types seemed to be based on innate traits, but also modified by the influence of other group members and by habituation to the environment.
Genetic Differentiation Among Stationary and Anadromous Perch (Perca Fluviatilis) in the Baltic Sea
Compared four different perch populations from the northern part of the Gulf of Bothnia (Umea, Sweden), representing two anadromous populations, one lake population and one brackish sea population, revealed highest level of genetic differentiation between the reproductive behavioural forms from around Umea.
Alternative reproductive behaviour in the common goby, Pomatoschistus microps: an ontogenetic gradient?
- C. Magnhagen
- BiologyAnimal Behaviour
- 1 July 1992
Gape size allometry in pike reflects variation between lakes in prey availability and relative body depth
Competition for food in a situation where prey are big may cause a selection for a higher gape size, and this mechanism could be the reason that pike from different lakes vary in relative gAPE size.