Rothamsted England literature-based vital rates Leptohylemyia coarctata 1964-1972

Vital rates were constructed from data tables in Bardner, R., K.E. Fletcher, M.G. Jones &J.R. Lofty. 1973. Fluctuations in populations of wheat bulb fly (Leptohylemyia coarctata) at Rothamsted. Annals of Applied Biology 74:25-34. The original data came from Stackyard field, Rothamsted Expt. Station, Harpenden, Hertfordshire, England. I assumed that sex ratio was 1:1, and and emigration happened at the adult stage. Survival rates are for egg to March/April larva, and March/April larva to adult.