There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
Guate, I agree Food supply is one of the factor in tiger's body mass. But, if no tiger bigger than near 200kg found in last 3 decades, then that tells different story. Big gene tigers will usually have access to larger territory, good food supply. Do you have any record of any bigger tiger captured in RFE after 1950 till today ? If not, then it is pretty much safe to assume, maximum body mass of modern wild amur tiger is near 200kg, that is their maximum genetic capacity. But, bigger amur tiger gene pool is maintained in captivity. That has to be taken into account when we talk about amur tiger as species until captive gene pool is introduced into wild and old pre-1950 genetic diversity is brought back.
It is very hard fact, humans have done massive damage to wildlife. Amur tigers, Gir lions, ranthambore, sariska, panna and so many tiger reserves in India poachers destroyed the gene pool. Once gene pool which was evolved over many thousand years is lost, it will never come back. At-least Amur tigers have good representation of gene pool in captivity. Bengal tigers have nothing of that sort, they rely on wild.