Distribution of Smooth-coated Otters Lutrogale perspicillata (Mammalia: Carnivora: Mustelidae): in Ratnagiri, Maharashtra, India

Swanand Patil,Kranti Yardi

doi:10.11609/jott.7652.14.1.20511-20516

Abstract

This report describes the distribution of Smooth-coated Otters in Ratnagiri, Maharashtra, and investigates the utility of scat counts for quantifying otter occurrence. The study duration was from February to June 2020. Surveys were conducted along the Jog River in Anjarle and Aade River in Aadekond using camera traps. The results subjected to principal component analysis indicated that the occurrence of Smooth-coated Otters at Anjarle is 76% and at Aadekond 48%. We also mapped the distribution and threats associated with Smooth-coated Otters. This study serves as a baseline for efforts to support long-term otter research and conservation.

Highlights

Otters are prime indicators of the status of wetland ecosystems, where they are often the key predators
This paper aims to provide scientific data on the distribution and status of otters in Anjarle, Ratnagiri
Part of the local population is aware of the otters and their whereabouts; knowledge of otters is scarce amongst the general population in India, and the villagers and tourists coming to Anjarle are no different

Summary

Introduction

Otters are prime indicators of the status of wetland ecosystems, where they are often the key predators. According to the IUCN Red List, the conservation status of the Smooth-Coated Otter Lutrogale perspicillata is ‘Vulnerable’ (Image 1) It is listed in the CITES under Appendix I, and in India, it is a Scheduled II species under the Wildlife (Protection) Act, 1972, which prevents/. Direct observations and counting individuals are difficult especially since the Smooth-coated Otter is both elusive and has a large home range. For such species, indirect field census methods (Tracks, scat, territory marking sites, dens) have been developed to estimate their distribution, and their population trends (Wilson & Delahay 2001; Sittenthaler et al 2020)

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