Insect Fauna and Its Ecological Features in Kot Dam in the Northern Aravalli Range Bordering Indian Desert

Asian Resonance (P: ISSN No. 0976-8602 RNI No. UPENG/2012/42622 VOL.-9, ISSUE-4, October 2020 E: ISSN No. 2349-9443)Paper Submission: 15/10/2020, Date of Acceptance: 25/10/2020, Date of Publication: 26/10/2020 

Abstract




Saroj Bugalia

 Associate Professor, Dept. of Zoology, S.K. Govt. Girls P.G. College Sikar, Rajasthan, India




Neena Gupta

 Associate Professor, Dept. of Zoology, S.K. Govt. Girls P.G. College Sikar, Rajasthan, India

The Kot dam is situated in the western foot-hills of the Aravalli bordering the Indian desert. It holds water that has narrower and lower ranges of temperature, pH, EC, TDS and alkalinity as compared to the surface waters in the Indian desert. It has better light penetration and dissolved oxygen and reveals considerably narrow range of seasonal thermal fluctuations. Insect fauna in the dam, studied for 15 months, was represented by 19 species belonging to orders Coleoptera (8), Hemiptera (7), Odonata (1) and Diptera (3), besides some larval forms. The total insect population ranged from 5 to 112/l with an annual average of 35/l. The periodicity of occurrence was different among insect genera, however, most of the forms preferred the period of moderate environmental conditions during monsoon and early winter. The coleopteran species belonged to five families. Hemiptera was represented by eight bug species belonging to six families. Notonecta glauca was the most dominant bug. While Culex larvae were recorded during monsoon in the water column, rat-tailed larvae and Chironomus larvae were recorded from the littoral sediments. Former two were found only during late monsoon; whereas latter one was recorded throughout the year in considerably high number during monsoon and winter. The dam shows many a species common with those in desert waters, however, some of them differ in their population and seasonality of occurrence. Greater component of bugs than beetles is a striking feature of this Aravalli water that is absolutely opposite to most of the desert waters which offer more tough conditions of existence that are of course well tolerated by hardy beetles. 

 

for full paper please visit below link : 

http://www.socialresearchfoundation.com/upoadreserchpapers/1/385/2011260746301st%20saroj%20bugalia.pdf

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