Ecology driving genetic variation: a comparative phylogeography of jungle cat (Felis chaus) and leopard cat (Prionailurus bengalensis) in India.
BACKGROUND
Comparative phylogeography links historical population processes to current/ecological processes through congruent/incongruent patterns of genetic variation among species/lineages. Despite high biodiversity, India lacks a phylogeographic paradigm due to limited comparative studies. We compared the phylogenetic patterns of Indian populations of jungle cat (Felis chaus) and leopard cat (Prionailurus bengalensis). Given similarities in their distribution within India, evolutionary histories, body size and habits, congruent patterns of genetic variation were expected.


RESULTS
We collected scats from various biogeographic zones in India and analyzed mtDNA from 55 jungle cats (460 bp NADH5, 141 bp cytochrome b) and 40 leopard cats (362 bp NADH5, 202 bp cytochrome b). Jungle cats revealed high genetic variation, relatively low population structure and demographic expansion around the mid-Pleistocene. In contrast, leopard cats revealed lower genetic variation and high population structure with a F(ST) of 0.86 between North and South Indian populations. Niche-model analyses using two approaches (BIOCLIM and MaxEnt) support absence of leopard cats from Central India, indicating a climate associated barrier. We hypothesize that high summer temperatures limit leopard cat distribution and that a rise in temperature in the peninsular region of India during the LGM caused the split in leopard cat population in India.


CONCLUSIONS
Our results indicate that ecological variables describing a species range can predict genetic patterns. Our study has also resolved the confusion over the distribution of the leopard cat in India. The reciprocally monophyletic island population in the South mandates conservation attention.
National Centre for Biological Sciences, Bangalore, Karnataka, India. shomitam@gmail.com
Shomita
S
Mukherjee
Anand
A
Krishnan
Krishnapriya
K
Tamma
Chandrima
C
Home
R
R
Navya
Sonia
S
Joseph
Arundhati
A
Das
Uma
U
Ramakrishnan
D000818:Animals; D001483:Base Sequence; D002335:Carnivora / Q000235:genetics*; D017931:DNA Primers; D004463:Ecology; D014644:Genetic Variation; D005843:Geography; D006239:Haplotypes; D007194:India; D010802:Phylogeny; D016133:Polymerase Chain Reaction
D017931:DNA Primers