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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue Sep 2008, 29 (5)                                     Back

Interactions between marine facultative epiphyte Chlamydomonas sp

Effect of some abiotic factors on population buildup of Idioscopus clypealis (Lethierry) in western Uttar Pradesh


Akash Varshneya* and K.S. Rana


Environmental Research Laboratory, Department of Zoology, Agra College, Agra - 282 002 , India


(Received: November 15, 2006; Revised received: June 25, 2007;? Accepted: July 02, 2007)


Abstract: Idioscopus clypealis (Lethierry) is commonly known as mango leaf hopper. The hopper reduces mongo production by causing non setting of flower and dropping of immature fruits. The first appearance of hoppers (0.12 and 0.16) on the branches of mango trees was recorded in February, which is correlated with increase in maximum (23.89oC and 24.29oC) and minimum temperature (11.46oC and 11.88oC) and decrease in relative humidity (88.15% and 86.85%). Peak hopper population (5.88 and 6.46) was recoded in May on temperature range of (40.34oC and 40.88oC) and (27.22oC and 27.62oC) as maximum and minimum, which was very high, whereas, relative humidity was very low (55.80% and 55.09%). With the increase in maximum and minimum temperature and decrease in relative humidity, hopper population raised. Thus, maximum and minimum temperature positively affected the hopper population, whereas, relative humidity had negative effect, but rainfall showed no significant effect, as it was fluctuating.


Key words:?? Idioscopus clypealis (Lethierry), Population, Temperature, Relative humidity, Rainfall

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