our goal in the experimental design was to have as many unique combinations of paired larvae as possible,talking into account both the mother and the population where she was collected in each of four experimental groups and to be consistent in our selection of pairs across the groups.The groups included pairs of (1)siblings(larvae from the same female),(2) larvae from the same population (different females collected in the same pool),(3) larvae from close poppulation(different females collected in the same different lower Galilee breeding sites),(4) larvae from distnat poppulation (one larva from a female in a Mount carmel pool and another from a Lower Galilee pool).