bioRxiv Science⌕ Search

Biology subjects

LYNGDOH, S.

Publications and source records attributed to LYNGDOH, S..

2 recordsLinked to original sources

Predation by Himalayan Wolves: Understanding conflict, culture and co-existence amongst Indo-Tibetan community and large carnivores in High Himalaya

The wolves in the Hindukush-Himalayan region belong to one the most basal lineages within Canis lupus, yet little is known about its ecology, distribution, and behavior. To understand ecological aspects of wolves in this landscape, we predict wolf distribution, diet patterns and conflict perception in Spiti, India using field and remotely sensed information. We collected scats (n = 283) of canid species namely, Wolves, and other predators over a period of 3 years (2014-17) [66]. Wolf diet constituted mostly of domestic prey (79.02 %) while wild prey constituted to 17.80% of wolf diet over the three years. Village surveys recorded only 4% of the respondents confirmed wolf presence and perceived them as a possible threat to various livestock. Over, 98% of the respondents claimed that wolves were not safe for livestock and were averse to its presence. Marginal response curves depicted the model to have positive responses to animal location, LULC, village population, village density and wolf depredation. We found perceived presence/threat distribution wolves in the area significantly differed from actual ecological presence and distribution of wolves. The Himalayan wolf is an apex flagship predator in this fragile high altitude system, whose role is intricately linked with the ecology of the region. The use of such methods can aid in understanding such aspects as well as designing effective long-term conservation strategies for the species.

ecology↗

Catch me if you can: Species interactions and moon illumination effect on mammals of tropical semi-evergreen forest of Manas National Park, Assam, India

Species interaction plays a vital role in structuring communities by stimulating behavioral responses in temporal niche affecting the sympatric associations and prey-predator relationships. We studied relative abundance indices (RAI) and activity patterns of each species, temporal overlap between sympatric species, and effects of moon cycle on predator-prey relationships, through camera-trapping in tropical semi-evergreen forests of Manas National Park. A total of 35 species were photo-captured with 16214 independent records over 7337 trap nights. Overall, relatively high number of photographs was obtained for large herbivores (11 species, n=13669), and low number of photographs were recorded for large carnivores (five species, n=657). Activity periods were classified into four categories: diurnal (day-time), nocturnal (night-time), crepuscular (twilight), and cathemeral (day and night time) of which 52% records were found in diurnal period followed by 37% in nocturnal phase whereas only 11% photographs during twilight. Small carnivores were strictly nocturnal (leopard cat and civets) or diurnal (yellow-throated marten and mongooses); whereas large carnivores were cathemeral (tiger, leopard, clouded leopard and Asiatic black bear). Analysis of activity patterns throughout the 24-h cycle revealed a high degree of temporal overlap (>60%) among most of the sympatric species; however, differences in the activity peaks were found between most of the species pairs. Moon phase was classified according to the percentage of visible moon surface as new (0-25%), waxing (25-50%), waning (50-75%) and full moon (75-100%). Moon phase did not have any correlation with activity of large carnivore and large prey. The large carnivore followed the feed and starve pattern of cyclic activity. The activity of small carnivore was influenced negatively by moonlight (partial correlation r = -0.221, p<0.01). The result suggests that large carnivores were active non-differentially across moon phases; however, small carnivores showed significantly high activity in darker nights. These patterns indicate that small predators may differ their activity temporally as an anti-predator strategy or otherwise to increase their foraging efficiency.

animal behavior and cognition↗