Oral contraceptives to check monkey population

The answer to India’s out-of-control monkey menace could be the little pill.

Scientists with the Dehradun-based Wildlife Institute of India (WII) are trying to control the cheeky monkeys — not spay or neuter the animals but offer them a family planning vaccine called porcine zona pellucida that has shown its potency in America.

The contraceptive programme, if cleared for use, will be the first in India where dwindling forests have driven the highly adaptable and opportunistic monkeys towards villages and cities.

Trials are being conducted in Uttarakhand, the Himalayan state that has nearly 150,000 monkeys, according to a forest department estimate.

Neighbouring Himachal Pradesh too has monkeys on its back, and the state tried out a catch-and-sterilise programme to little effect. The animal is declared a vermin in many districts, which wildlife lovers call a euphemism for the death sentence as the tag permits culling.

That got the scientists at WII to look for an alternative. They have been doing a pilot project on oral contraceptives in a 20 square km area of the tree-lined institute, studying monkey behaviour and food habits.

Test results have been satisfactory, and the scientists are confident that the contraceptive will keep the runaway monkey population down.

But the challenge would be to get the Central Drug Standard Control Organisation, which reports to the ministry of health and family welfare, on board.

The vaccine is not available in India and must be imported from the US. Each shot would cost at least ₹6,000 — a sum that needs to cross multiple layers of bureaucratic turnstiles.

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