Immigration of Cnaphalocrocis medinalis GUENEE and Spoladea recurvalis FABRICIUS and the rice field and the seaside during the Bai-u season in 1996.

Miyahara, Yoshio

doi:10.4241/kyubyochu.43.63

Cited by 2 publications

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“…It is well established that, under laboratory conditions, adult C. medinalis benefit from the availability of sugars (Waldbauer, 1979; Waldbauer & Marciano, 1979), including leafhopper honeydew (Waldbauer et al , 1980). Increased longevity and fecundity in the laboratory has naturally led to speculation that field biology is influenced by nectar (Miyahara, 1997). Although little is known about C. medinalis nutrition in the field (Waldbauer et al , 1980), the significance of nectar is borne out by a report of C. medinalis adults feeding on flowers of the Chinese chaste tree Vitex cannabifolia (Verbenaceae) (Wu, 1991).…”

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confidence: 99%

Parasitoids of the rice leaffolder Cnaphalocrocis medinalis and prospects for enhancing biological control with nectar plants

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et al. 2011

Agri and Forest Entomology

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1 The rice leaffolder Cnaphalocrocis medinalis (Guenée) (Lepidoptera: Pyralidae) is a serious rice pest in Asia. The conspicuous foliar damage caused by C. medinalis larvae leads to early-season insecticide applications that disrupt the biological control of this and other pest species. 2 Despite the often dramatic impact of C. medinalis, rice plants can tolerate severe defoliation with no impact on grain yield, although persuading farmers to withhold insecticide application has proven very difficult. 3 The present review assesses the prevention of damage caused by C. medinalis via biological control using parasitoids. Information on the indigenous parasitoids of C. medinalis is drawn together for the first time from the non-English literature published in Asia. This is integrated with the wider English language literature to provide a comprehensive analysis of the parasitoid fauna. 4 Survey studies have been conducted in many Asian countries in recent decades, showing that parasitoids of rice pests can achieve high rates of parasitism but are far from consistent as a mortality factor. There is much less work available on the biology of leaffolder parasitoids in rice and there is an unexpected dearth of studies regarding increasing their performance by providing nectar sources, which is a widely explored approach for other crop systems. 5 It is concluded that the recently reported work in which nectar plants are established on rice bunds to support planthopper parasitoids may have significant benefit for leaffolder parasitoids. The use of plant species, however, that are selective in not allowing adult moths to feed will be essential.

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Section: Introductionmentioning

confidence: 99%

Parasitoids of the rice leaffolder Cnaphalocrocis medinalis and prospects for enhancing biological control with nectar plants

Gurr

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Catindig

et al. 2011

Agri and Forest Entomology

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Flight activity, reproduction, and adult nutrition of the beet webworm, Spoladea recurvalis (Lepidoptera: Pyralidae)

Shirai

2006

Appl. Entomol. Zool.

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The adult longevity, reproductive period, age-specific flight activity, suitable temperature range for flight, and effect of adult feeding on the subsequent flight of Spoladea recurvalis Fabricius were studied in the laboratory. Flight activity was evaluated using a tethered flight-mill. Females had a pre-oviposition period of 3 d, and continued to lay eggs up to 20 d post-emergence. Females flew longest between 17 and 23°C, and 10% of females were capable of continuous long-duration flight even at 12°C. Females flew more actively in their pre-oviposition period, but the females' reproduction period was not clearly separated from their active flight period. The mating status of females had no clear effect on their flight activity. Uptake of honey solution (nectar) was essential for adult survival, and the survival rate was reduced markedly when honey solution was withheld. When honey solution was supplied after 5 d of starvation, the overall longevity of the moths was the same as that of the moths continuously supplied with honey solution since emergence. When honey solution was removed even for 1 d, subsequent flight activity was significantly depressed. Thus, the prediction that the strong propensity for long flights by S. recurvalis may be derived from their dispersal flights to seek flower nectar was not supported from the present experiment.

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Immigration of Cnaphalocrocis medinalis GUENEE and Spoladea recurvalis FABRICIUS and the rice field and the seaside during the Bai-u season in 1996.

Cited by 2 publications

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Parasitoids of the rice leaffolder Cnaphalocrocis medinalis and prospects for enhancing biological control with nectar plants

Parasitoids of the rice leaffolder Cnaphalocrocis medinalis and prospects for enhancing biological control with nectar plants

Flight activity, reproduction, and adult nutrition of the beet webworm, Spoladea recurvalis (Lepidoptera: Pyralidae)

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