Effects of warming on development rates on Karner Blue Butterfly laboratory data (2011-2012)

The dataset is associated with a project that examines effects of climate change on the federally endangered Karner blue butterfly (Lycaeides melissa samuelis) by subjecting different life stages of the Karner blue to both historically average temperature regimes and temperature regimes 2, 4, and 6 degrees Celsius above historic means. This dataset is composed of two spreadsheets: one for data collected in 2011, and the other for data collected in 2012. All experimental subjects were from an experimental colony of Karner blues maintained at the University of Notre Dame and derived from Karner blues collected, under USFWS permit, from Indiana Dunes National Lakeshore in 2010. Karner blues were subjected to the different temperature regimes starting at the egg stage and continuing through larval, pupal, and adult stages, if the individual survived through those stages. For each individual Karner blue, and for both years, the dataset contains the following variables: butterfly ID, Final Stage attained, Sex, Treatment, Generation, Adult Mass, Hatch Date, Adult Eclosion Date, Development time, and Egg Output for females. The 2011 dataset also includes some additional variables: Hatch/Eclosion Dates, Pupal Mass, Development Time, Degree Days at 12C lower threshold (the accumulative thermal units an individual experienced throughout the whole life above 12 Celsius degree), and daily Degree Days with same threshold. The 2012 dataset includes additional variables: wing area, abdominal area, thorax-ventral length, and snout-ventral length.