Cohort life table for the Manu giant otter population, 1991 to 2006 cohorts (excluding 1997 and 1998).

x(Age) = age interval (starting at 0.5 yrs which is when cubs are first censused), Nx = number of individuals per age class, mx = fecundity (half number of offspring born to parent aged x), Sx = age specific probability of survival to following year, lx = probability of survival from birth to age x, lxmx = average number of offspring born to female at age x (age specific contribution to reproduction), xlxmx = mother’s age when each offspring was born, Ex = life expectancy (average lifespan remaining for an individual of age x).Cohort life table for the Manu giant otter population, 1991 to 2006 cohorts (excluding 1997 and 1998).