Influence of warming temperatures on coregonine embryogenesis within and among species
Stewart, T. R., Mäkinen, M., Goulon, C., Guillard, J., Marjomäki, T. J., Lasne, E., Karjalainen, J., & Stockwell, J. D. (2021). Influence of warming temperatures on coregonine embryogenesis within and among species. Hydrobiologia, 848(18), 4363-4385. https://doi.org/10.1007/s10750-021-04648-0
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The greatest known global response of lakes to climate change has been an increase in water temperatures. The responses of many lake fishes to warming water temperatures are projected to be inadequate to counter the speed and magnitude of climate change. We experimentally evaluated the responses of embryos from a group of cold, stenothermic fishes (Salmonidae Coregoninae) to increased incubation temperatures. Study groups included cisco (Coregonus artedi) from lakes Superior and Ontario (USA), and vendace (C. albula) and European whitefish (C. lavaretus) from Lake Southern Konnevesi (Finland). Embryos from artificial crossings were incubated at water temperatures of 2.0, 4.5, 7.0, and 9.0°C, and their responses were quantified for developmental and morphological traits. Embryo survival, incubation period, and length-at-hatch were inversely related to incubation temperature whereas yolk-sac volume increased with incubation temperature within study groups. However, varying magnitudes of responses among study groups suggested differential levels of developmental plasticity to climate change. Differential levels of parental effects indicate genetic diversity may enable all study groups to adapt to cope with some degree of changing environmental conditions. Our results suggest that the coregonines sampled within and among systems may have a wide range of embryo responses to warming incubation conditions. ...
PublisherSpringer Science and Business Media LLC
Dataset related to the publicationhttps://github.com/taylorstewart/Stewart-et-al-2021---Coregonine-Temp-Embryo
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Additional information about fundingThis study was funded by the United States Geological Survey under Grant/Cooperative Agreement No. G16AP00087 to the Vermont Water Resources and Lakes Studies Center and G17AC00042 to the University of Vermont. This work was made possible with funds made available to Lake Champlain by Senator Patrick Leahy through the Great Lakes Fishery Commission. A workshop to develop this experiment was supported by INRAE, French National Research Institute for Agriculture, Food, and Environment, the UMR CARRTEL (INRAE - USMB), and the National Science Foundation (award number 1829451). ...
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