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Fluctuating temperature leads to evolution of thermal generalism and preadaptation to novel environments.

• Tarmo Ketola, Lauri Mikonranta, +5 authors Jouni Laakso
• Evolution; international journal of organic…
• 2013

Environmental fluctuations can select for generalism, which is also hypothesized to increase organisms' ability to invade novel environments. Here, we show that across a range of temperatures,… (More)

Different food sources elicit fast changes to bacterial virulence.

• Tarmo Ketola, Lauri Mikonranta, Juha Laakso, Johanna Mappes
• Biology letters
• 2016

Environmentally transmitted, opportunistic bacterial pathogens have a life cycle that alternates between hosts and environmental reservoirs. Resources are often scarce and fluctuating in the… (More)

Life History Trade-Offs and Relaxed Selection Can Decrease Bacterial Virulence in Environmental Reservoirs

• Lauri Mikonranta, Ville-Petri Friman, Jouni Laakso
• PloS one
• 2012

Pathogen virulence is usually thought to evolve in reciprocal selection with the host. While this might be true for obligate pathogens, the life histories of opportunistic pathogens typically… (More)

Evolution of bacterial life-history traits is sensitive to community structure.

• Tarmo Ketola, Lauri Mikonranta, Johanna Mappes
• Evolution; international journal of organic…
• 2016

Very few studies have experimentally assessed the evolutionary effects of species interactions within the same trophic level. Here we show that when Serratia marcescens evolve in multispecies… (More)

Within-host evolution decreases virulence in an opportunistic bacterial pathogen

• Lauri Mikonranta, Johanna Mappes, Jouni Laakso, Tarmo Ketola
• BMC Evolutionary Biology
• 2015

Pathogens evolve in a close antagonistic relationship with their hosts. The conventional theory proposes that evolution of virulence is highly dependent on the efficiency of direct host-to-host… (More)

Insect immunity: oral exposure to a bacterial pathogen elicits free radical response and protects from a recurring infection

• Lauri Mikonranta, Johanna Mappes, Minna Kaukoniitty, Dalial Freitak
• Frontiers in Zoology
• 2014

Previous exposure to a pathogen can help organisms cope with recurring infection. This is widely recognised in vertebrates, but increasing occasions are also being reported in invertebrates where… (More)

Lepidopteran species have a variety of defence strategies against bacterial infections.

• Lauri Mikonranta, Franziska Dickel, Johanna Mappes, Dalial Freitak
• Journal of invertebrate pathology
• 2017

The insect immune system has versatile ways of coping with microbial insults. Currently, innate immune priming has been described in several invertebrates, and the first insights into its mechanistic… (More)

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