The effect of prey resources on evolutionary and ecological dynamics of prey (Serratia marcescens) and predator (Tetrahymena thermophila)
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Ravintoresurssin ajallisen vaihtelun vaikutus saaliin (Serratia marcescens -bakteeri) ja pedon (Tetrahymena thermophila -alkueläin) evolutiiviseen ja ekologiseen dynamiikkaan
Koivu, Maija (2010)Resurssit ovat yksi tärkeimmistä eliöiden evoluutioon vaikuttavista ympäristötekijöistä. Esimerkiksi eliöiden kyky kilpailla ja puolustautua voivat kehittyä erilailla ravintoympäristöstä ja sen muutoksista riippuen: hyvä ... -
Predation on Multiple Trophic Levels Shapes the Evolution of Pathogen Virulence
Friman, Ville-Petri; Lindstedt, Carita; Laakso, Jouni; Mappes, Johanna (Public Library of Science, 2009)The pathogen virulence is traditionally thought to co-evolve as a result of reciprocal selection with its host organism. In natural communities, pathogens and hosts are typically embedded within a web of interactions with ... -
Top-down effects of a lytic bacteriophage and protozoa on bacteria in aqueous and biofilm phases
Zhang, Ji; Örmälä, Anni-Maria; Mappes, Johanna; Laakso, Jouni (John Wiley & Sons Ltd., 2014)Lytic bacteriophages and protozoan predators are the major causes of bacterial mortality in natural microbial communities, which also makes them potential candidates for biological control of bacterial pathogens. However, ... -
Protist predation can select for bacteria with lowered susceptibility to infection by lytic phages
Örmälä, Anni-Maria; Ojala, Ville; Hiltunen, Teppo; Zhang, Ji; Bamford, Jaana; Laakso, Jouni (BioMed Central Ltd., 2015)Background: Consumer-resource interactions constitute one of the most common types of interspecific antagonistic interaction. In natural communities, complex species interactions are likely to affect the outcomes of ... -
Evolution of signal diversity : predator-prey interactions and the maintenance of warning colour polymorphism in the wood tiger moth Arctia plantaginis
Rönkä, Katja (University of Jyväskylä, 2017)Aposematic organisms avoid predation by advertising defences with warning signals. The theory of aposematism predicts warning signal uniformity, yet variation in warning coloration is widespread. The chemically defended ...