Question: does fitness (as used in biology) and survival have the same meaning

Answer: No, The term ``Darwinian fitness'' can be used to make clear the distinction with physical fitness. Fitness does not include a measure of survival or life-span; Herbert Spencer's well-known phrase ``survival of the fittest'' should be interpreted as: ``Survival of the form (phenotypic or genotypic) that will leave the most copies of itself in successive generations.''