S17RS SGFB No. 20 (Frosted Decal Name Labels)

To allocate a maximum of two thousand nine hundred forty dollars and zero cents (2940.00) from the Student Government Initiatives Account to fund forty-nine (49) frosted vinyl decal name labels on the doors of ten (10) University buildings

F15RS SGR No. 20 (HC Decoration Disposal)

A RESOLUTION To urge and request that Greek Life and the department of Campus Life dispose of all Homecoming decorations in an eco-friendly manner

Figure 3 data: effects of selection treatment and ambient salinity on heat tolerance

Data used to generate figure 3. Mortality as a function of temperature for three selection treatmnts (HS= high salinity, LS = low salinity, U = control) at three ambient salinities (low= 15ppt, med = 35 ppt, high = 70 ppt)

Adaptation to climate change: trade‐offs among responses to multiple stressors in an intertidal crustacean

Trade‐offs may influence both physiological and evolutionary responses to co‐occurring stressors, but their effects on both plastic and adaptive responses to climate change are poorly understood. To test for genetic and physiological trade‐offs incurred in tolerating multiple stressors, we hybridized two populations of the intertidal copepod Tigriopus californicus that were divergent for both heat and salinity tolerance. Starting in the F(2) generation, we selected for increased tolerance of heat, low salinity, and high salinity in replicate lines. After five generations of selection, heat‐selected lines had greater heat tolerance but lower fecundity, indicating an energetic cost to tolerance. Lines selected for increased salinity tolerance did not show evidence of adaptation to their respective environments; however, hypo‐osmotic selection lines showed substantial loss of tolerance to hyperosmotic stress. Neither of the salinity selection regimes resulted in diminished heat tolerance at ambient salinity; however, simultaneous exposure to heat and hypo‐osmotic stress led to decreased heat tolerance, implying a physiological trade‐off in tolerance to the two stressors. When we quantified the transcriptomic response to heat and salinity stress via RNA sequencing, we observed little overlap in the stress responses, suggesting the observed synergistic effects of heat and salinity stress were driven by competing energetic demands, rather than shared stress response pathways

Data from: Adaptation to climate change: trade-offs among responses to multiple stressors in an intertidal crustacean

Trade-offs may influence both physiological and evolutionary responses to co-occurring stressors, but their effects on both plastic and adaptive responses to climate change are poorly understood. To test for genetic and physiological trade-offs incurred in tolerating multiple stressors, we hybridized two populations of the intertidal copepod Tigriopus californicus that were divergent for both heat and salinity tolerance. Starting in the F2 generation, we selected for increased tolerance of heat, low salinity, and high salinity in replicate lines. After five generations of selection, heat-selected lines had greater heat tolerance but lower fecundity, indicating an energetic cost to tolerance. Lines selected for increased salinity tolerance did not show evidence of adaptation to their respective environments; however, hypo-osmotic selection lines showed substantial loss of tolerance to hyperosmotic stress. Neither of the salinity selection regimes resulted in diminished heat tolerance at ambient salinity; however, simultaneous exposure to heat and hypo-osmotic stress led to decreased heat tolerance, implying a physiological trade-off in tolerance to the two stressors. When we quantified the transcriptomic response to heat and salinity stress via RNA sequencing, we observed little overlap in the stress responses, suggesting the observed synergistic effects of heat and salinity stress were driven by competing energetic demands, rather than shared stress response pathways

Figure 2: Mortality data for selected lines and controls

Mortality as a function of temperature for Tigriopus californicus lines selected for increased heat tolerance (Treatment = SEL) and Controls (Treatment = U

Figure 5 data: survival under starvation conditions for four selection treatments at three salinities

Figure 5 data: number of surviving copepods (out of 10 adult females) under starvation conditions for four selection treatments (HS = high salinity, LS = low salinity, TS = selection for increased heat tolerance, U = control) at three exposure salinities (low=5ppt, med=35ppt, high=90ppt