TAILIEUCHUNG - Development, survival and reproduction of three coccinellids feeding on hyalopterus pruni (Geoffer) (Homoptera: Aphididae)
The development, survival and fecundity of three aphidophagus coccinellid species, Scymnus apetzi (Mulsant), Scymnus subvillosus (Goeze) and Exochomus nigromaculatus (Goeze), were studied under laboratory conditions (25 ± 1, 65 ± 5% RH and 16 L/8D). | Turk J Agric For 26 (2002) 119-124 © TÜB‹TAK Development, Survival and Reproduction of Three Coccinellids Feeding on Hyalopterus pruni (Geoffer) (Homoptera: Aphididae) Remzi ATLIHAN, M. Bora KAYDAN Yüzüncü Y›l University, Faculty of Agriculture, Department of Plant Protection, 65080 Van - TURKEY Received: Abstract: The development, survival and fecundity of three aphidophagus coccinellid species, Scymnus apetzi (Mulsant), Scymnus subvillosus (Goeze) and Exochomus nigromaculatus (Goeze), were studied under laboratory conditions (25 ± 1, 65 ± 5% RH and 16 L/8D). Development time from egg to adult was , and days for S. apetzi, S. subvillosus and E. nigromaculatus, respectively. Mortality rate from egg to adulthood was highest for S. apetzi () followed by S. subvillosus () and E. nigromaculatus (). Duration of the oviposition period was , and days, and the total number of eggs per female was , and for S. apetzi, S. subvillosus and E. nigromaculatus, respectively. According to the life table parameters, net reproduction rate per female (R0), the intrins rate of increase (rm), and mean generation time (T0) were , 0,121 and for S. apetzi; , and for S. subvillosus, and , and for E. nigromaculatus. The results obtained here provide information about the biology of three coccinellids that might be useful for the utilization of these predators in IPM programs against H. pruni. Key Words: Scymnus apetzi, Scymnus subvillosus, Exochomus nigromaculatus Hyalopterus pruni (Geoffer) (Homoptera: Aphididae) ile Beslenen Üç Coccinellid Türünün Geliflme ve Üremesi Özet: Bu çal›flma Hyalopterus pruni (Geoffer) ile beslenen üç coccinellid türü (Scymnus apetzi (Mulsant), Scymnus subvillosus Goeze ve Exochomus nigromaculatus Goeze)’nün laboratuvar koflullar›nda ergin öncesi dönemlerinin geliflme süresi, ölüm oran› ve üreme gücünün incelenmesi amac›yla yürütülmüfltür. .
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