Laboratory-based comparison for the effects of environmental stressors supports field evidence for the relative importance of pollution on life history and behavior of the pond snail, Lymnaea stagnalis

Moore, Emily M.; Alexander, Mhairi E.; Sloman, Katherine A.; Pereira, M. Glória ORCID: https://orcid.org/0000-0003-3740-0019; Thacker, Sarah A.; Orton, Frances. 2021 Laboratory-based comparison for the effects of environmental stressors supports field evidence for the relative importance of pollution on life history and behavior of the pond snail, Lymnaea stagnalis. Environmental Science & Technology, 55 (13). 8806-8816. https://doi.org/10.1021/acs.est.1c01640

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Official URL: http://dx.doi.org/10.1021/acs.est.1c01640

Abstract/Summary

Biodiversity is declining at an alarming rate globally, with freshwater ecosystems particularly threatened. Field-based correlational studies have “ranked” stressors according to their relative effects on freshwater biota, however, supporting cause-effect data from laboratory exposures are lacking. Here, we designed exposures to elicit chronic effects over equivalent exposure ranges for three ubiquitous stressors (temperature: 22–28 °C; pollution [14 component mixture]: 0.05–50 μg/L; invasive predator cue [signal crayfish, Pacifasticus leniusculus]: 25–100% cue) and investigated effects on physiological end points in the pond snail (Lymnaeastagnalis). All stressors reduced posthatch survival at their highest exposure levels, however, highly divergent effects were observed at lower test levels. Temperature stimulated hatching, growth, and reproduction, whereas pollution delayed hatching, decreased growth, reduced egg number/embryo viability, and induced avoidance behavior. The invasive predator cue stimulated growth and reduced embryo viability. In agreement with field-based ranking of stressors, pollution was identified as having the most severe effects in our test system. We demonstrate here the utility of laboratory studies to effectively determine hierarchy of stressors according to their likelihood of causing harm in the field, which has importance for conservation. Finally, we report negative impacts on life-history traits central to population stability (survival/reproduction) at the lowest pollution level tested (0.05 μg/L).

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1021/acs.est.1c01640
UKCEH and CEH Sections/Science Areas:	Pollution (Science Area 2017-)
ISSN:	0013-936X
Additional Keywords:	pollution, temperature, climate change, invasive species, freshwater, Mollusca, multiple stressor, ecotoxicology
NORA Subject Terms:	Ecology and Environment
Date made live:	14 Jul 2021 16:34 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/530708

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1021/acs.est.1c01640

UKCEH and CEH Sections/Science Areas:

Pollution (Science Area 2017-)

ISSN:

0013-936X

Additional Keywords:

pollution, temperature, climate change, invasive species, freshwater, Mollusca, multiple stressor, ecotoxicology

NORA Subject Terms:

Ecology and Environment