(18.97.14.84)
[ij] [ij] [ij] 
Email id
 

Journal of Entomological Research
Year : 2009, Volume : 33, Issue : 1
First page : ( 45) Last page : ( 49)
Print ISSN : 0378-9519. Online ISSN : 0974-4576.

Seasonal incidence of predatory wasps in A. mellifera colony having different number of frames

Varshneya Indu1, Pandey Ajay Kumar2, Mall P., (Late) Rathore R.R.S.

Department of Entomology, G.B. Pant University of Agriculture & Technology, Pantnagar, Udhamsingh Nagar - 263 145, Uttarakhand, India.

1Biosciences Campus, Inderprastha Engineering College, Sahibabad, Ghaziabad (UP), 201 010; E-mail: drindugupta@yahoo.com.

2Department of Entomology, College of Forestry & Hill Agriculture, G. B. Pant University of Ag. & Tech., Hill Campus, Ranichauri, Tehri Garhwal, (Uttarakhand), 294 199; E-mail: drajay2002@rediffmail.com.

Accepted:  10  February,  2009.

Abstract

An attempt was made to study the seasonal incidence of predatory wasp in Apis mellifera colony having different number of frames at G. B. Pant University of Agriculture & Technology, Pantnagar. All the three species of wasps i.e. Vespa tropica haematoides, Vespa orientalis and Polistis hebraeus commenced their visit over the colonies from July (early rainy season) and started to decline from the month of November. Maximum activity of predatory wasp was recorded between last fortnight of September (late rainy season) to first fortnight of October (early autumn season) during both the years. No wasp was recorded during winter, spring and summer season during study. Correlation study revealed that there was significant positive correlation between the wasps’ population and minimum temperature (r = 0.287), maximum humidity (r = 0.380) and minimum (r = 0.434) humidity. Positive correlation was also recorded between wasp population and number of frames in the hive.

Top

  
║ Site map ║ Privacy Policy ║ Copyright ║ Terms & Conditions ║ Page Rank Tool
862,331,982 visitor(s) since 30th May, 2005.
All rights reserved. Site designed and maintained by DIVA ENTERPRISES PVT. LTD..
Note: Please use Internet Explorer (6.0 or above). Some functionalities may not work in other browsers.