Diversity and abundance of insect pollinator fauna in coriander (Coriandrum sativum L.) and ajwain (Trachyspermum ammi L.) in north Karnataka
2022
Maragoor, Hasen | Vastrad, A.S. | Jambagi, Suresh R. | Kinnal, Chetana
Coriander (Coriandrum sativum L.) and ajwain (Trachyspermum ammi L.) are the two important seed spices being domesticated and marketed in India. Understanding the abundance and diversity of insect fauna which are actively involved in cross pollination of them is crucial in production of higher quality seed yield. During the study period, coriander flowers were visited by 17 species of pollinators (5 Hymenopterans, 6 Dipterans, 2 Coleopterans and 4 Lepidopterans) and 23 species of pollinators (6 Hymenopterans, 10 Dipterans, 2 Coleopterans and 5 Lepidopteran) were documented on ajwain flowers from the districts surveyed (Gadag, Haveri and Dharwad districts for coriander; Vijayapura, Bagalkot and Dharwad districts for ajwain). Diversity (Simpson index of diversity, Shannon-Wiener index, Evenness and Similarity index) of pollinators in coriander was higher in Gadag followed by Haveri and Dharwad districts. In ajwain, the diversity (Simpson index of diversity, Shannon-Wiener index, Evenness and Similarity index) of pollinators was higher in Vijayapura followed by Bagalkot and Dharwad districts. Meanwhile, in both coriander and ajwain, Apis florea was the most predominant pollinator followed by A. cerana indica which need to be conserved through potential conservative agronomical practices to enhance the seed yield.
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