Effects of environmental conditions in the period of early ontogenesis on the formation of defensive behavior in juvenile roach Rutilus rutilus (Cyprinidae)

Смирнова, Е. С.; Gerasimov, Yu. V.

doi:10.1134/s0032945210010157

Cited by 3 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mechanisms of trophic differentiation based on the intraspecific differences in the ability to risk. The impact of predators may have evolutionary consequences (Portz and Harold, 2004;Walsh and Reznick, 2008;Smirnova and Gerasimov, 2010). Individual behavior plays an important role in the success of defensive activity (Lister and Neff, 2006;Vilhunen et al, 2008).…”

Section: Biotopic Segregation and Trophic Polymorphism In The Populatmentioning

confidence: 99%

Behavioral mechanisms of trophic differentiation in benthivorous fish

Gerasimov

2012

J. Ichthyol.

Self Cite

View full text Add to dashboard Cite

The base of the behavioral mechanism responsible for trophic differentiation in fish is determined: during feeding, specialized benthivores use space more selectively, while in nonspecialized fish, accidental components play an important role in the foraging behavior that determines the difference in its efficiency in the compared groups of fish species. Consequently, the specialized fish are able to optimize their behavior at a lower stability of the food distribution. The mechanism of density regulation based upon the polymorphism of social behavior serves as the base for the intraspecific trophic differentiation in fish. We show that species specific and intraspecific differences in the ability to risk build the base of trophic differentiation under pres sure of a predator.

show abstract