Gothic (CO) Euphydryas gillettii vital rates 1981-1985, 2002-2004

Data were collected during July-September in 1981 through 1985 and during June-September 2002 through 2004. Mark-release-recapture was done for adult butterflies, and daily survival rate estimated for females using Jolly-Seber methods. Egg clusters were counted, along with number of eggs per cluster. Data were collected each year on egg cluster survival, and in 2004 on larval survival conditional on egg cluster survival. The data were used to construct yearly vital rates, including daily probability of laying an egg cluster, cluster size, survival from egg to diapause, survival over-winter to adult stage, and female daily survival probability.

Population sizes were decreasing during nearly all years included in the data set, although a 1-2 order of magnitude increase in size occured ca. 2000-2, which is not included here.