âFDA-clearedâ means a test system has been reviewed by the FDA and has been determined to be substantially equivalent to a test system already legally marketed for the same use. This could apply to waived, moderate or high complexity test systems.
The study estimates that there are now 3,890 wild tigers, up from 3,200 in 2010, when countries announced a historic commitment to double the population by 2022. Countries appear to be heading toward their goal, and this is the first time tiger numbers have been increasing globally in more than a hundred years.
A tiger can consume up to 88 pounds of meat at one time. On average, tigers give birth to two or three cubs every two years. If all the cubs in one litter die, a second litter may be produced within five months. Tigers generally gain independence at two years of age and attain sexual maturity at age three or four for females and at four or five years for males. Juvenile mortality is high howeverâabout half of all cubs do not survive more than two years. Tigers have been known to reach the age of 26 years in the wild. Males of the largest subspecies, the Amur (Siberian) tiger, may weigh up to 660 pounds. For males of the smallest subspeciesâthe Sumatran tigerâupper range is at around 310 pounds. Within each subspecies, males are heavier than females.