EFFECT OF DIETS AND TEMPERATURE DEGREES ON THE BIOLOGICAL ASPECTS OF THE LAELAPID MITE, OLOLAELAPS USSURIENSIS BREGETOVA & KOROLEVA, 1964

Document Type : Original Article

Authors

1 Plant Protection Research Institute, A.R.C. Dokki, Giza, Egypt

2 Zoology Dept., Fac. Sci., (Girls), Al-Azhar Univ., Nasr City, Cairo, Egypt

Abstract

The biological aspects of the laelapid mite, Ololaelaps ussuriensis (Laelapidae: Mesostigmata) was investigated at laboratory conditions under different diets and two temperature degrees. The obtained results showed that the diets as acarid mite , Tyrophagus putrescentiae (Schrank) and free living nematodes, Rhabditella muscicola (Andrassy) and  temperature degrees (15 and 25 ºC) were significantly influenced the periods of  incubation period, longevity and life span of the predatory mite, O. ussuriensis, but there was no significant differences  in the case of combination or  interaction between these factors .Data , also,  indicated that the adult female of O. ussuriensis  laid more eggs (41.8 eggs) when fed on the free living nematode at 25 ºC compared with the acarid mite diet . The lowest number of laid eggs (33 eggs) was observed when the females fed on T. putrescentiae at 15 ºC.

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