University of Jyväskylä | JYX Digital Repository

  • English  | Give feedback |
    • suomi
    • English
 
  • Login
JavaScript is disabled for your browser. Some features of this site may not work without it.
View Item 
  • JYX
  • Opinnäytteet
  • Väitöskirjat
  • View Item
JYX > Opinnäytteet > Väitöskirjat > View Item

The evolution of temperature tolerance and invasiveness in a fluctuating thermal environment

Thumbnail
View/Open
1.5 Mb

Downloads:  
Show download detailsHide download details  
Published in
Jyväskylä studies in biological and environmental science
Authors
Saarinen, Kati
Date
2016
Discipline
Ekologia ja evoluutiobiologia

 
The consequences of the climate change on species are still uncertain, despite of intensive research. Currently, rising temperature is not the only concern, since the climate change scenarios also predict increases in the amount of disturbances, such as storms, floods, and thermal fluctuations. Disturbances have also been shown to affect species’ evolution, for example by selecting for traits that are advantageous in fluctuating environments but are also facilitating invasiveness. In this thesis, I study the consequences of evolving in a fluctuating thermal environment by utilizing bacterial microcosms. First I tested the effects of fluctuating vs. constant temperature on the evolution of temperature tolerance, both in one-species setting (I) and with multiple species (II). Then I studied how pre-adaptations to fluctuating vs. constant temperature, together with environmental conditions, affect invasion success (III). Additionally I also tested the effects of propagule pressure and genetic diversity on invasion success (IV). The results of the studies I and II show that constant and fluctuating thermal environments require different kinds of adaptations, as measurements taken in constant environments (traditional tolerance curve approach) did not reveal the adaptations to fluctuating environment. In study III, I found that fluctuations during invasion as well as pre-adaptations to fluctuating environment increased the invasion success of the invader. However, in study IV, I did not find any clear evidence that high propagule pressure or high genetic variance would have increased invasion success. To conclude, the results in this thesis demonstrate that adaptations that aid species to cope with disturbed environments can also lead to increased invasiveness. Furthermore, these adaptations might not be detectable using traditional measurement methods, which could, in the worst case, lead to incorrect conclusions and management actions, when considering climate-change driven extinction risks, or the effects of invasive species on natural environments. ...
Publisher
University of Jyväskylä
ISBN
978-951-39-6459-7
ISSN Search the Publication Forum
1456-9701
Contains publications
  • Article I: Ketola, T., Saarinen, K. 2015. Experimental evolution in fluctuating environments: tolerance measurements at constant temperatures incorrectly predict the ability to tolerate fluctuating temperatures. Journal of Evolutionary Biology 28: 800-806. DOI: 10.1111/jeb.12606
  • Article II: Saarinen, K., Laakso, J., Lindström, L., Ketola, T. Constant and fluctuating thermal environments require different adaptations: evolution experiments with nine bacterial species. Submitted manuscript.
  • Article III: Saarinen, K., Lindström, L., Ketola, T. Double-trouble with the climate change? Environmental fluctuations increase invasion success and select for more invasive genotypes. Manuscript.
  • Article IV: Saarinen, K., Lindström, L., Ketola, T. Experimental invasions in bacterial microcosms: no effect of propagule pressure or genotypic diversity on invasion success. Manuscript.
Keywords
invaasiolajit kokeellinen evoluutio adaptation bacteria disturbed environment experimental evolution invasion temperature fluctuation tolerance curve evoluutio luonnonvalinta sopeutuminen leviäminen vieraslajit ympäristönmuutokset lämpötila ilmastonmuutokset bakteerit
URI

http://urn.fi/URN:ISBN:978-951-39-6459-7

Metadata
Show full item record
Collections
  • Väitöskirjat [3299]

Related items

Showing items with similar title or keywords.

  • Experimental evolution of evolutionary potential in fluctuating environments 

    Ketola, Tarmo; Kronholm, Ilkka (Wiley, 2023)
    Variation is the raw material for evolution. Evolutionary potential is determined by the amount of genetic variation, but evolution can also alter the visibility of genetic variation to natural selection. Fluctuating ...
  • Responses to Developmental Temperature Fluctuation in Life History Traits of Five Drosophila Species (Diptera: Drosophilidae) from Different Thermal Niches 

    Manenti, Tommaso; Kjærsgaard, Anders; Munk Schou, Toke; Pertoldi, Cino; Moghadam, Neda N.; Loeschcke, Volker (MDPI AG, 2021)
    Temperature has profound effects on biochemical processes as suggested by the extensive variation in performance of organisms across temperatures. Nonetheless, the use of fluctuating temperature (FT) regimes in laboratory ...
  • Adaptation to fluctuations in temperature by nine species of bacteria 

    Saarinen, Kati; Laakso, Jouni; Lindström, Leena; Ketola, Tarmo (Blackwell Publishing Ltd, 2018)
    Rapid environmental fluctuations are ubiquitous in the wild, yet majority of experimental studies mostly consider effects of slow fluctuations on organism. To test the evolutionary consequences of fast fluctuations, we ...
  • Evolutionary rescue at different rates of environmental change is affected by trade‐offs between short‐term performance and long‐term survival 

    Liukkonen, Martta; Kronholm, Ilkka; Ketola, Tarmo (Wiley-Blackwell, 2021)
    As climate change accelerates and habitats free from anthropogenic impacts diminish, populations are forced to migrate or to adapt quickly. Evolutionary rescue (ER) is a phenomenon, in which a population is able to avoid ...
  • The effect of environmental fluctuations on the invasion success of bacterial invader Serratia marcescens 

    Räsänen, Emmi (2017)
    Ilmastonmuutoksen on odotettu lisäävän ympäristöolosuhteissa tapahtuvien vaihteluiden määrää. Teorian mukaan nämä vaihtelut voisivat lisätä vieraslajien levittäytymistä uusille alueille, mikäli ne vaikuttavat ekologisiin ...
  • Browse materials
  • Browse materials
  • Articles
  • Conferences and seminars
  • Electronic books
  • Historical maps
  • Journals
  • Tunes and musical notes
  • Photographs
  • Presentations and posters
  • Publication series
  • Research reports
  • Research data
  • Study materials
  • Theses

Browse

All of JYXCollection listBy Issue DateAuthorsSubjectsPublished inDepartmentDiscipline

My Account

Login

Statistics

View Usage Statistics
  • How to publish in JYX?
  • Self-archiving
  • Publish Your Thesis Online
  • Publishing Your Dissertation
  • Publication services

Open Science at the JYU
 
Data Protection Description

Accessibility Statement

Unless otherwise specified, publicly available JYX metadata (excluding abstracts) may be freely reused under the CC0 waiver.
Open Science Centre