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Home Environment

Night pollinators

February 21, 2022
in Environment
Reading Time: 3 mins read
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Night pollinators
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In news– Recently, a new study has revealed that moths (especially nocturnal  pollinators) are vital to pollination in the Himalayan ecosystem of northeast India.

Key Highlights of the study–

  • The study establishes 91 species of moths as potential pollinators of 21 plant families in Sikkim and Arunachal Pradesh in the northeastern Himalayas.
  • The results assume significance as a majority of the pollination-related studies are based on diurnal pollinators (bees and butterflies) and the role of nocturnal pollinators have so far received less scientific attention.
  • In the present study about 65% moths (91 species) carried sufficient quantities of pollen grains to be considered as potential pollinators. 
  • Teliphasa sp. (Crambidae) and Cuculia sp. (Noctuidae) are found to carry the highest quantity of pollen.
  • The Geometridae (geometer moths) and Erebidae (erebid moths, tiger moths, lichen moths, among others ) turned out to be the most important moth families for pollen transportation in the Himalayan region.
  • It has also found frequent interaction of moths with Betulaceae, Fabaceae, Rosaceae and Ericaceae. 
  • Though the Betulaceae is predominantly a wind-pollinated plant family, some recent studies indicate that wind-pollinated plant families also benefit from enhanced dispersal by insects.
  • Another interesting outcome of the study is that the moth species , Achaea janata (a well-known pest of various economically important plants) was identified as a potential pollinator of three plant families, indicating that moths can provide net benefits as pollinators even when acting as larval herbivores of the same species.
  • The research, part of a project funded by the Ministry of Environment, Forest and Climate Change, was among very few large scale studies at a global level where the research team studied the effect of various seasons and different altitudes on the pollination ecology of moths.
  • Generally moths are considered mysterious denizens of nights, and for a long time they were better known as pest species.
  • There are about 12,000 moth species in India and about 160,000 moth species in the world, and the study can go a long way in understanding the role of the nocturnal insect pollinators.

About Moths

  • Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. 
  • Moths vary greatly in size, ranging in wingspan from about 4 mm (0.16 inch) to nearly 30 cm (about 1 foot).
  • Compared with butterflies, moths have stouter bodies and duller colouring. 
  • Moths also have distinctive feathery or thick antennae.
  • The butterflies form a monophyletic group, the moths, comprising the rest of the Lepidoptera, do not. 
  • As with all lepidopterans, the moth life cycle has four stages: egg, larva (caterpillar), pupa (chrysalis), and adult (imago). 
  • The larvae and adults of most moth species are plant eaters.

 

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Source: The Hindu
Tags: News PaperPrelims

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