Author： Matter M. M. El-Shershaby Mahasen Farag N. A. Gesraha M. A.
Publisher： Taylor & Francis Ltd
ISSN： 0323-5408
Source： Archives of Phytopathology and Plant Protection, Vol.44, Iss.2, 2011-01, pp. : 127-134
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
Temperature had various effects on the predacious efficacy of immature and mature stages of the coccinellid predator, Stethorus punctillum on the two-spotted spider mite, Tetranychus urticae. In the case of immature stages, food consumption at the lowest tested temperature (15°C) was significantly higher than that at higher temperatures (25 and 35°C). On the contrary, positive correlation between food consumption and temperature was evaluated in the case of adult predator. Regarding predator responses to different prey density, a high positive correlation between food consumption and prey density was evaluated among 4th instar larvae of the predator, followed by adult predator, while younger instars did not show reasonable increases with increasing prey densities. These results confirm that larval and adult stages of S. punctillum exhibit “Type II” functional response. In conclusion, the 4th instar larvae and adult predator are the most preferable stages in winter and summer crops to control T. urticae, respectively.
Related content
By Khalk Amira Abdel Momen Faten
Archives of Phytopathology and Plant Protection, Vol. 42, Iss. 8, 2009-08 ,pp. :
Access to resources
Recommend
Archives of Phytopathology and Plant Protection, Vol. 43, Iss. 3, 2010-02 ,pp. :
By Adandonon Appolinaire Vayssieres Jean-Francois Sinzogan Antonio Van Mele Paul
International Journal of Pest Management, Vol. 55, Iss. 4, 2009-09 ,pp. :
By Peng R. K. Christian K. Gibb K.
International Journal of Pest Management, Vol. 45, Iss. 3, 1999-07 ,pp. :
By Zaher M. Momen F. M. Rasmy A. H. Nawar M. S. Abou-Elella G.
Archives of Phytopathology and Plant Protection, Vol. 40, Iss. 4, 2007-08 ,pp. :