Amur Tigers

[Sabre]

(10-14-2016, 06:31 AM)GrizzlyClaws Wrote: The Bergmann rule only applies when both subspecies have the similar prey base, then the one that lives in the colder climate tends to be larger.

BTW, the Northern Bengal is the most exotic variety, and I am not sure if the captivity does show their presence. They are the largest variety among the Bengal subspecies, just like the Manchurian for the Amur subspecies.

Regardless about the prey base, from the genetic perspective, I think it is legit to say, Amur: Manchurian > Russian > Korean, Bengal: North Indian > Central Indian > South Indian.

I honestly not sure. The siberian tiger once inhabited southernmost part of Korea to 80 km northernmost of Ust'Maya of the Sibera which is very close to the North Pole. Temperature goes below -50 degrees there. Less human interference and probably similar prey base back in early 1900s. Siberian tiger once found in westernmost record as the lake Baikal. I know it's areas occasionally used by tigers. But Siberian tiger population was stable in the Russian states like Khabarovsk, Amur, Zabaylkalsk, and Buryatia. Only the Primorsky siberian tiger from Russia is smaller than Manchurian siberian tiger

I believe the Siberian tiger in those area could surpass the size of the Manchurian Siberian tiger. Unfortunately, it's impossible to know since those records are 1800s to 1905 and there is no description about the size. The siberian tiger in those areas are in Russia/Siberia are 100% mystery.
Also, what about the Siberian tiger size from the Liaodong peninsula?? I don't know anything about past Siberian tiger sizes are in there. Probably smaller than Manchurian tiger.

So far I know is there is no captive Siberian tiger from Manchuria before 1950s. This is what Peter agrees too.

"The Bergmann rule only applies when both subspecies have the similar prey base, then the one that lives in the colder climate tends to be larger."
Then how come bald eagles in Florida and Arizona are smaller than bald eagles living in northern part of North America regardless of prey base? Reply