Abdel-Baky .
Economic Entomology Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt.
A.H. Abdel-Salam
Economic Entomology Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt.
ABSTRACT
Two biotypes of the whitefly, Bemisia tabaci, were recorded in Dakahelia and Damietta Governorates, Egypt. Biotype "B" or Bemisia argentifolii has a wide host range occurring on squash, tomato, cabbage, cotton and duranta plants, while Biotype Q was recorded only on lantana plants. Squash plants attracted the silverleaf whitefly (SLWF), B. argentifolii, in both spring and fall plantations with significantly higher abundance in the latter. The correlation coefficient between SLWF life stages was discussed. Occurrence of the SLWF on squash plants indicated that the middle and lower leaves were preferred to nymphs and adults. Meanwhile all squash leaves were suitable for SLWF females to lay eggs, with higher deposition on the middle ones. In the field, B. argentifolii infestations were associated with silvering leaves disorder. The symptoms appeared after 21.5 and 17.5 days in the spring and fall plantations, respectively. Meanwhile in the laboratory, the same symptoms were observed 16.5 days after infestation.
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How to cite this article
Abdel-Baky . and A.H. Abdel-Salam, 2000. Relative Abundance of the Silverleaf Whitefly, Bemisia argentifolii Bellows and Perring, on Squash Plants in Egypt. Pakistan Journal of Biological Sciences, 3: 223-230.
DOI: 10.3923/pjbs.2000.223.230
URL: https://scialert.net/abstract/?doi=pjbs.2000.223.230
DOI: 10.3923/pjbs.2000.223.230
URL: https://scialert.net/abstract/?doi=pjbs.2000.223.230
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