Climate change as a possible driver of invasion and differential in HSP70 expression in two genetically distinct populations of the invasive killer shrimp, Dikerogammarus villosus

Global climate change is known to affect physiological processes in charge of cellular stress response. That often results in forcing many organisms to shift their biogeographic distribution ranges. It also holds true for euryoecious and highly invasive species like the killer shrimp, Dikerogammarus...

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Bibliographic Details
Published in:Biological invasions 2018-08, Vol.20 (8), p.2047-2059
Main Authors: Hupało, Kamil, Riss, H. Wolfgang, Grabowski, Michał, Thiel, Jacqueline, Bącela-Spychalska, Karolina, Meyer, Elizabeth I.
Format: Article
Language:English
Subjects:
Aquatic ecosystems
Cellular stress response
Climate change
Climatic conditions
Cross-breeding
Developmental Biology
Dikerogammarus villosus
Ecology
Freshwater & Marine Ecology
Freshwater ecosystems
Global climate
Global warming
Hsp70 protein
Introduced species
Invasive species
Life Sciences
Original Paper
Plant Sciences
Population genetics
Populations
Temperature effects
Temperature tolerance
Thermal stress
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Summary:Global climate change is known to affect physiological processes in charge of cellular stress response. That often results in forcing many organisms to shift their biogeographic distribution ranges. It also holds true for euryoecious and highly invasive species like the killer shrimp, Dikerogammarus villosus. In this study we compare the level of response to thermal stress in two genetically diversified populations of the amphipod D. villosus on the cellular level, namely HSP70 expression. The results show clear difference in HSP70 expression, that can be a direct consequence of the different climatic conditions both populations faced along their invasion routes. We conclude that the eastern population of D. villosus is more sensitive to thermal stress than the western population, hence its invasion potential may be lower than that of the latter. Considering the thermal tolerance of both populations and global warming, we can make some predictions about further spread of D. villosus , including the possibility of an emergence of the super-invader that may arise after cross-breeding of both populations, imposing even larger threat to the freshwater ecosystems.
ISSN:1387-3547
1573-1464
DOI:10.1007/s10530-018-1679-2