The use of degree-day models for egg development in Pomacea will serve to increase the effectiveness and efficacy of control measures targeted to egg masses through a better timing in their application, especially in localities with highly variable temperatures. <a href="http://www.bioone.org/doi/abs/10.4002/040.055.0203">http://www.bioone.org/doi/abs/10.4002/040.055.0203</a> __________________________________________ Comparing apples with apples: clarifying th