Desert rodents like the Indian gerbil ( Tatera indica) and Meriones are carriers of plague, but are resistant to the disease. Another group of rodents, which includes the house rat ( Rattus rattus ) and the bandicoot ( Bandicota bengalensis ), is highly susceptible to plague, which is transferred by fleas ( Xenopsylla cheopsis and X astia ). Decimation of plants and insects species that the rodents fed on has increased competition for food between the two groups
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/unhealthy-trend
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/land-degradation
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/canal-irrigation
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/infectious-diseases
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rajasthan