Biodiversity

Around the year 1975, the rice crop yields in Maharashtra, India, started declining. Strangely, this was correlated to the introduction of frog dissection in colleges in this state. How are they linked? During this period, colleges in India introduced frog dissection for their science students. Truckloads of frogs were caught from paddy fields and sent to colleges where they were used in laboratory experiments. The frogs are carnivores and eat pests that thrive on paddy. As their populations declined, the pests went up in numbers and brought down the crop yield.