Emerging Trends in Climate Change (ETCC)
Year : 2022, Volume : 1, Issue : 3
First page : (1) Last page : (8)
Article doi: : http://dx.doi.org/10.18782/2583-4770.115
Impact of Temperature on Sex Ration of Gharial Population in National Chambal Sanctuary, Rajasthan
Krishnendra Singh Nama1, Hari Mohan Meena2*, Kiran Choudhary3 1,3Assistant Professor, Department of Botany, Lzebra College, Kota, Rajasthan 2Field Biologist, Ranthambore Tiger Reserve, Sawai Madhopur, Rajasthan
*Corresponding Author E-mail: harimeenawls@gmail.com
Received: 11.09.2022 | Revised: 27.xx.2022 | Accepted: 10.12.2022
ABSTRACT
Temperature dependent sex determination (TSD) is a type of environmental sex determination. It is a natural process, but due to changing climate, this process is getting disturbed. A vivid example of this is the disturbing sex ratio of alligators in the Chambal river of Rajasthan. The annual census shows that although there has been a steady increase in the overall number of gharials in the NCS, but there have been clear and noticeable changes in their sex ratio in relation to the annual temperature. In 2016, the difference in male: female ratio was 1:8.32, which reached 1:13.4 in 2020. Thus, after 2016, where there has been a relative decrease in the mean temperature, its effect is visible in gharials in the form of an increased number of females, while the number of males has increased much less than that of gharials in the NCS, Rajasthan part. The sex ratio shows the deviation from the perspective of climate.
Keywords: Chambal River, Gharial, Nesting Behaviours, M/F Ratio, Climate Change.
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Nama, K. S., Meena, H. M., & Choudhary, K. (2022). Impact of Temperature on Sex Ration of Gharial Populationin National Chambal Sanctuary, Rajasthan, Emrg. Trnd. Clim. Chng.1(3), 1-8. doi: http://dx.doi.org/10.18782/2583-4770.115
