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Allen's rule - Hare and its ears on the Earth [1]. Allen's rule is an ecogeographical rule formulated by Joel Asaph Allen in 1877, [2] [3] broadly stating that animals adapted to cold climates have shorter and thicker limbs and bodily appendages than animals adapted to warm climates.
Life flourishes around the vents - including giant tubeworms reaching lengths of 10 feet (3 meters), mussels, crabs, shrimp, fish and other organisms beautifully adapted to this extreme environment.
In Siberia, annual temperatures fluctuate between +38 and −70 °C (100 and −94 °F) and winter may last for 8 months. [7] Yakutian horses are kept unstabled year-round, and in the roughly 800 years that they have been present in Siberia, they have evolved a range of remarkable morphologic, metabolic and physiologic adaptations to this harsh environment.
The loss of hemoglobin was initially believed to be an adaptation to the extreme cold, as the lack of hemoglobin and red blood cells decreases blood viscosity, which is an adaptation that has been seen in species adapted to cold climates.
As you can see, our resident animals adapt and change for the winter season. Therefore, they fit Meggison’s and Darwin’s rules/statements and we can expect many of them to successfully survive ...
A xerocole (from Greek xēros / ˈ z ɪ r oʊ s / 'dry' and Latin col(ere) 'to inhabit'), [2] [3] [4] is a general term referring to any animal that is adapted to live in a desert. The main challenges xerocoles must overcome are lack of water and excessive heat. To conserve water they avoid evaporation and concentrate excretions (i.e. urine and ...
Japanese macaques can survive in cold temperatures of below −15°C (5°F), and are among very few primates that can do so. Chionophiles are any organisms ( animals , plants , fungi , etc.) that can thrive in cold winter conditions (the word is derived from the Greek word chion meaning " snow ", and -phile meaning "lover").
STORY: The Rajiv Gandhi Zoological Park and Wildlife Research Center has installed fans, coolers, foggers and sprinklers to provide relief to its animals.Elephants were seen having a jovial time ...