Hot-water immersion for disinfestation of lightbrown apple moth (Epiphyas postvittana) and longtailed mealy bug (Pseudococcus longispinus) on persimmons

Hot water treatments combined with cold storage as a tool for Ectomyelois ceratoniae mortality and maintenance of Deglet Noor palm date quality

“…As reported in material and methods, the LT 99 for E. postvittana and P. longispinus insects on Fuyu persimmons ranged from 31.3 to 66.9 min, respectively, when 44 C was used. However, only 8.1 min was needed for E. postvittana and 13.3 min for P. longispinus when the temperature increased to 54 C (Lester et al, 1995;Lay-Yee et al, 1997). Feng et al (2004) reported similar findings for C. pomonella larvae on sweet cherries, reaching 100% mortality at 50 C for 9 min or at 54 C for 5 min.…”

“…The HWT applied were based on previous experiments that were effective in controlling E. postvittana and P. longispinus on Fuyu persimmons, with LT 99 mean values (estimated treatment times for 99% insect mortality) ranging from 31.3 to 66.9 min, respectively, when 44 C were used. However, that time was reduced to 8.1 min for E. postvittana and 13.3 min for P. longispinus when the temperature increased to 54 C (Lester et al, 1995;Lay-Yee et al, 1997). In sweet cherries, HWT provided 100% C. pomonella larvae mortality using 50 C for 10 min and 54 C for 6 min (Feng et al, 2004).…”

“…HWT have been effective in controlling Epiphyas postvittana and Pseudococcus longispinus on Fuyu persimmons (Lester et al, 1995;Lay-Yee et al, 1997), Ceratitis capitata in mango fruit (Jacobi et al, 2001) and Cydia pomonella in sweet cherries, maintaining overall acceptable fruit quality (Feng et al, 2004). The mean lethal time (LT) values (estimated treatment  mortality) was dependent on the type of insect and fruit.…”

Effect of Temperature and Treatment Conditions on the Mortality ofEpiphyas postvittana(Lepidoptera: Tortricidae) Exposed to Ethanol

“…The water bath consisted of a Þberglass tub (110 liters) and a Grant water bath temperature controller unit (Ϯ0.1ЊC accuracy; model GRAV, Grant Instruments, Cambridge, UK). Even temperature within the bath was achieved by circulating the water using a pump (Grundfos pump, model UPS 20 Ð 60B 150 Copenhagen, Denmark) (Lester et al 1995). The water temperature variation was no more than Ϯ0.2ЊC spatially throughout the bath or over time as recorded with an electronic data logger (Grant Squirrel 1250 series, Grant Instruments, Cambridge, UK) (Lay-Yee et al 1997).…”

Ecologically relevant measures of the physiological tolerance of light brown apple moth, Epiphyas postvittana, to high temperature extremes

“…A number of studies have investigated the upper thermal tolerance of E. postvittana in the context of post-harvest control of fruit infestations, using temperature in combination with other stress factors (Whiting et al, 1991;Lester et al, 1995;Beckett and Evans, 1997;Alderson et al, 1998;Tabatabai et al, 2000). In contrast, only one study has been conducted on E. postvittana at an ecologically relevant high temperature, and in this case only a single temperature (Whiting et al, 1995).…”