Moths are key pollinators in Himalayan ecosystem

Study of a dozen species revealed the presence of pollen grains
Moths are widely considered as pests, but a recent study by scientists of Zoological Survey of India (ZSI) has revealed that these group of insects are pollinators to a number of flowering plants in the Himalayan ecosystem. Under the project titled “ Assessment of Moths ( Lepidoptera ) As Significant Pollinators in the Himalayan Ecosystem of North Eastern India”, scientists collected moth samples from different ecosystem. The analysis of proboscis, a long and thread-like organ used to suck flower sap, of a dozen moth species’ revealed the presence of pollen grains. “Most of the studies on plant pollinators or plant- pollinator network are focused on diurnal interactions between the insects and plants. This particular study is based on plant- moth interactions, as a nocturnal phenomenon, ” Navneet Singh, principal investigator of the project, told The Hindu . The study was carried out in states such as Arunachal Pradesh, Sikkim and West Bengal. According to Dr. Singh, proboscis of different moths belonging to families of moths, such as Erebidae and Sphingidae, were found to contain pollen of several flowering plants, including Rhododendron. Experts also pointed out that similar studies on ascertaining the role of moths in pollination are being undertaken different parts of the world. Kailash Chandra, director of ZSI, emphasised that the study was unique, as scientist are looking at a new group of insects (moths) as pollinators. Usually bees, wasps and butterflies are considered as prominent pollinators. “About 90% of the world’s flowering plants are pollinated by animals. Therefore, pollinators are essential for the genetic exchange among flowering plants and the biodiversity among plants,” Dr. Chandra said. In India, estimates put the number of of moth species at nearly 12,000. Researchers have pointed out that almost two-thirds of common large moth species have declined over the last 40 years in some parts of world. One of main reasons for the decline is light pollution (an increase in artificial light in moth habitats).
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