Post mortem analyses in vultures across India
and its neighboring countries traced diclofenac and its derivative compounds in
their carcasses. Therefore, it is inferred that biomagnification of diclofenac
from the consumed infected domestic animal carcasses contributes mortality by
causing renal failure and hepatic damages in vultures.
However, reports also indicate that both
extrinsic environmental and intrinsic cellular causes might also be
contributing factors. It offers a debate to confirm whether only diclofenac is
the primary
cause of vulture mortality versus their susceptibility to microbial pathogens,
diseases or physiological conditions, such as oxidative stress due to
diclofenac biomagnification.
It is observed that natural disasters such as
heavy cyclonic storm which affect arboreal life may be one of the major causes
of the death of vultures in some parts of India. Therefore, extrinsic insults
such as heavy cyclonic storms are believed to be also contributing factor to
affect arboreal life including vultures in some other parts of the world. A
perspective is made on the above facts as a cause of catastrophic mortality of
vultures in India.
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