The COVID pandemic has magnified our fear of bats, but their conservation is crucial to prevent such events from arising again.
Try this PYQ from CSP 2014:
Q.Consider the following:
- Bats
- Bears
- Rodents
The phenomenon of hibernation can be observed in which of the above kinds of animals?
(a) 1 and 2 only
(b) 2 only
(c) 1, 2 and 3
(d) Hibernation cannot be observed in any of the above
Bats
- Bats are the largest mammalian group after rodents, with over 1,300 species making up a quarter of all mammals.
- They occur on all continents except Antarctica and are particularly diverse in South Asia, with 114 species of insect-eating bats and 14 fruit bats, also known as “flying foxes”, occurring in India.
- They roost in large colonies on trees, tree hollows, caves, rock crevices and abandoned manmade structures.
- They play a unique role in maintaining ecosystem structure, making a singular contribution to our food production, economy and well-being.
- They are the only mammals capable of true flight and have a unique sonar-based echolocation mechanism to capture prey at night.
Their significance
1) Seed dispersal
- About 29 per cent of all bats depend upon plants for food.
- The diet of fruit-eating bats consists largely of flowers and fruits such as mangoes, bananas, guavas, custard apples, figs, tamarind and many species of forest trees.
- Therefore, bats play a vital role in seed dispersal and forest regeneration. Studies have shown that seedlings raised from bat dispersed seeds show higher germination and vigorous growth.
2) Pollination
- Studies have found that bats play a vital role in pollination, mainly of large-flowered plants, and in crop protection.
- Fruit bats (Megachiroptera) being large, require big flowers with copious amounts of nectar.
- Bats are major pollinators for many species of mangroves which are important for coastal ecosystems and local livelihoods.
3) Production boost
- Insects are a major problem for agriculture, destroying up to 26 per cent of the annual production of crops worldwide every year, roughly amounting to $470 billion.
- Insectivorous bats, which make up 70 per cent of all bat species, are voracious predators of nocturnal insects and crop pests.
- Some large insectivorous bats are also reported to feed on small rodents. Thus they contribute directly to enhancing the crop productivity with tremendous economic impact.
4) Soil fertility
- Bats contribute significantly to soil fertility and nutrient distribution due to their large numbers, high mobility and varied habitats for roosting and foraging.
- Bat droppings provide organic input to soil and facilitate nutrient transfer, contributing to soil fertility and agricultural productivity. The practice is harmless vis-a-vis human health.
5) Health benefits
- Several species of bats, in fact, contribute to human health by reducing populations of mosquitoes and other insect vectors that spread malaria, dengue, chikungunya and other diseases.
- It is reported that a small bat may feed on almost 5,000 mosquitoes each and every feeding night far more than other measures adopted to eliminate them.
Their conservation
- According to the IUCN, about 5 per cent of bats are categorised as endangered and another 11 per cent are data deficient.
- Further, some species of fruit bats are categorised under Schedule 5 of the Wildlife (Protection) Act, 1973, along with other vermin species like rats, making it difficult to legally conserve them.
Conclusion
- The pandemic has demonstrated that conservation of biodiversity and natural habitats is absolutely essential to prevent such events from arising again.
- Understanding the role played by bats helps us appreciate how their absence can greatly affect all facets of our lives.
- Viruses don’t jump directly from bats or other animals to humans.
- Rather, illicit trade in wildlife, high levels of hunting for the consumption of wild meat, and destruction of natural habitats are responsible for this.
