Volume : V, Issue : III, March - 2016

BREEDING BIOLOGY OF OLIGONYCHUS BIHARENSIS (HIRST) (ACARI: TETRANYCHIDAE) A PEST ON COW PEA

Sangeetha G Kaimal

Abstract :

 Post emyonic development of Oligonychus biharensis (Hirst) was traced on cow pea in the laboratory at 30 + 2oC & 70 + 5% RH. Reå of the life stages of the mite was carried out following leaf flotation technique. The life cycle of the species was found to comprise both sexual and parthenogenetic generations with slight variations in their respective durations. The respective durations of pre–oviposition period, oviposition period and post–oviposition period were found to be 1.5 days, 11.5 + 0.75 days and 0.9 + 0.25 day. Ovipositional rate of the species was observed to be 50.9 + 4.7 eggs and 40.2 + 1.4 eggs for mated and unmated females respectively. Total duration of sexual development and parthenogenetic development was observed to be 6.45 + 0.05 days and 6.0 + 0.07 days respectively. The sex ratio (male: female) was 1–2: 10.

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Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

Sangeetha G Kaimal BREEDING BIOLOGY OF OLIGONYCHUS BIHARENSIS (HIRST) (ACARI: TETRANYCHIDAE) A PEST ON COW PEA International Journal of Scientific Research, Vol : 5, Issue : 3 March 2016

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