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Diet-dependent habitat shifts at different life stages of two sympatric primate species

  • Joseph J ErinjeryEmail author
  • Mewa Singh
  • Rafi Kent
Article
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Abstract

A shift or expansion of the realized niche at different life stages is often ignored while implementing conservation actions. We tested whether habitat extent and associations at different life stages of two sympatric primate species belonging to the same taxonomic family vary with respect to their dietary requirements. We expected the groups and solitary males of a frugivorous species to have a smaller extent of suitable habitat than those of a folivorous species. We used MaxEnt modelling to create habitat suitability maps using occurrence records and high-resolution remotely sensed environmental layers for groups and solitary males of highly frugivorous lion-tailed macaques and highly folivorous Nilgiri langurs in the Western Ghats, India. We found that the Nilgiri langur groups and lion-tailed macaque groups occupied a similar extent in our study area. However, due to weaker restrictions, the Nilgiri langur groups were observed to inhabit a broader variety of habitats than the lion-tailed macaque groups. Solitary males of both the lion-tailed macaque and Nilgiri langur migrate throughout the landscape, with only a 50% habitat overlap with their respective groups. We propose that a species’ dietary requirements have differential effects on habitat use, especially during dispersal, at the solitary stage in males.

Keywords

Habitat shift life stage langur macaque male dispersal solitary males 

Notes

Acknowledgements

We thank the Kerala and Tamil Nadu Forest Departments for granting us permission to conduct field work in the forest areas of Kerala and Tamil Nadu. MS and JJE thank SERB and J.C. Bose Fellowship during which this article was prepared.

Supplementary material

12038_2019_9865_MOESM1_ESM.docx (143 kb)
Supplementary material 1 (DOCX 142 kb)

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© Indian Academy of Sciences 2019

Authors and Affiliations

  1. 1.Department of Geography and EnvironmentBar-Ilan UniversityRamat-GanIsrael
  2. 2.Biopsychology Laboratory and Institute of ExcellenceUniversity of MysoreMysoreIndia
  3. 3.Evolutionary and Organismal Biology UnitJawaharlal Nehru Centre for Advanced Scientific ResearchBangaloreIndia

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