Combined effects of chemical and temperature stress onChironomus ripariuspopulations with differing genetic variability

Matthias Oetken, Lucas S. Jagodzinski, Christian Vogt, Adrienne Jochum, Jörg Oehlmann
2009 Journal of Environmental Science and Health. Part A: Toxic/Hazardous Substances and Environmental Engineering  
Exposure to pollutants under multiple environmental stressors (e.g., climate change and global warming) and the genetic diversity of populations are suspected to have serious impacts on populations and ecosystems but have only rarely been analysed. In the present study, we investigated the effects of the biocide tributyltin (TBT) within a temperature gradient (17, 20 and 23 • C) on life history parameters of a genetically diverse (GEN+) and a highly inbred population (GEN−) of the midge
more » ... us riparius. While endpoints, mortality and reproduction parameters were considered, the population growth rate as an integrative endpoint was determined. We found severe effects for GEN−, indicating that populations with lower genetic diversity are more endangered by combined stressors such as increasing temperature and chemical pollution compared to genetically diverse populations.
doi:10.1080/10934520902996849 pmid:19827487 fatcat:ssd3ob4k4bhlvn6pmhdnpmdp24