Observations on Rice Planthoppers Collected over the East China Sea in June and July, 1974

Hirao, Jutaro; Ito, Kosuke

doi:10.1303/jjaez.24.121

Cited by 10 publications

(5 citation statements)

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“…Rice planthoppers are long-distance migratory species. BPH and WBPH cannot overwinter in northeastern Asian countries, including Japan, Korea and Northern China, and annually migrate there from lower latitude regions in May, June and July (Kisimoto 1976;Hirao and Ito 1980). WBPHs stylopized by E. japonicus were captured in the East China Sea (Noda 1986;Kifune and Maeta 1986), which indicates that Elenchus also migrates for long distances with the host planthopper every year.…”

Section: Three Genotypes In E Japonicusmentioning

confidence: 99%

The strepsipteran parasite Elenchus japonicus (Strepsiptera, Elenchidae) of planthoppers consists of three genotypes

et al. 2011

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The twisted-wing parasite Elenchus japonicus is a major parasitoid of rice planthoppers (Hemiptera: Delphacidae), including the brown planthopper Nilaparvata lugens, the white-backed planthopper Sogatella furcifera, and the small brown planthopper Laodelphax striatellus. Another Elenchus species, E. yasumatsui, which is considered to be synonymous with E. japonicus, has also been described in southern Asia. However, limited biological and molecular data on this important parasitoid of rice planthoppers are available. In this study, E. japonicasstylopized planthoppers were obtained from various regions in Asia and Japan. Sequences of the nuclear 18S ribosomal RNA gene and the mitochondrial cytochrome oxidase I gene of the strepsipterans were analyzed from 40 samples of E. japonicus: 14 from N. lugens, 6 from S. furcifera and 20 from L. striatellus. Sequence analysis of these samples revealed three genotypes of E. japonicus. Of the three types of E. japonicus, one was isolated only from L. striatellus from northern Japan. The other two types were found in all three rice planthopper species collected from a wide area in Asia. These results suggest that the three different genotypes of Elenchus can be associated with a particular geographical region and/or planthopper species. The relationship between two previously described Elenchus species and the present three genotypes needs to be elucidated.

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Section: Three Genotypes In E Japonicusmentioning

confidence: 99%

The strepsipteran parasite Elenchus japonicus (Strepsiptera, Elenchidae) of planthoppers consists of three genotypes

et al. 2011

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“…This insect is able to overwinter in most parts of Japan (Kisimoto, 1989). A considerable number of SBPHs have been caught together with the brown planthopper and white-backed planthopper over the East China Sea (Kisimoto, 1972;Iijima, 1973;Hirao, 1974;Hirao and Ito, 1980;Ogawa et al, 1988). It is presumed that SBPH is able to migrate to Japan from overseas.…”

Section: Introductionmentioning

confidence: 99%

Insecticide susceptibility of the small brown planthopper, Laodelphax striatellus Fallen(Homoptera: Delphacidae), collected from East Asia.

Endo

Takahashi

Tsurumachi³

2002

Appl. Entomol. Zool.

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The insecticide susceptibility of the small brown planthopper, Laodelphax striatellus Fallén, collected from East Asia in 1992-1994, was examined by the topical application method. The LD 50 values of organophosphorus insecticide for the northern Vietnam populations (HAI, HAN, VIN) and the JIN population (Yunnan Province, China) were smaller than those of the FU (Zhejiang Province, China), IB (central Japan) and KU (southwestern Japan) populations. The LD 50 values of organophosphorus and carbamate insecticides for the northern Vietnam populations were almost the same as that for the Fukuoka (western Japan) population examined in 1967. The LD 50 values of organophosphorus insecticides did not differ among the FU (Zhejiang Province, China), IB (central Japan), and KU (southwestern Japan) populations. The LD 50 values of carbamates for the KU population were the largest, and those for the northern Vietnam population were the smallest. The carbamate susceptibility of acetylcholinesterase in the KU population was lower than that in the HAI population. Therefore, we considered that insensitivity of acetylcholinesterase for carbamate was one of the carbamate resistant factors in the KU population. The LD 50 values of etofenprox, fenvalerate, and imidacloprid showed no differences among all the populations tested, respectively.

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“…An alternative view is that outbreaks are caused by long-distance migration events. Potential to migrate is indicated by catches of a considerable number of SBPH at high altitudes or over the sea with N. lugens and S. furcifera , two species which annually migrate to China from the Indochina Peninsula riding the air currents in the early spring 10 11 . Moreover, a comparison of insecticide susceptibility between Chinese and Japanese populations coupled with a backward trajectory analysis indicated that SBPH can fly from China to Japan 12 .…”

mentioning

confidence: 99%

Evidence for high dispersal ability and mito-nuclear discordance in the small brown planthopper, Laodelphax striatellus

Sun

Wang

Zhang

et al. 2015

Sci Rep

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Understanding dispersal ability in pest species is critical for both theoretical aspects of evolutionary and population biology and from a practical standpoint, such as implementing effective forecasting systems. The small brown planthopper (SBPH), Laodelphax striatellus (Fallén), is an economically important pest, but few data exist on its dispersal ability. Here, we used mitochondrial and nuclear markers to elucidate the population genetic structure of SBPH and of the parasitic bacterium Wolbachia throughout temperate and subtropical China. Our results showed that the SBPH populations in China lack significant differences in genetic structure, suggesting extensive gene flow. Multilocus sequence typing revealed that Wolbachia infection was systematic and due to the same strain (wStri) within and across populations. However, the mtDNA haplogroups had a nonrandom distribution across the sampling localities, which correlated to latitudinal and climatic gradients. We explain this mito-nuclear discordance as a result of historical population recolonization or mitochondria adaptation to climate.

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Observations on Rice Planthoppers Collected over the East China Sea in June and July, 1974

Cited by 10 publications

References 0 publications

The strepsipteran parasite Elenchus japonicus (Strepsiptera, Elenchidae) of planthoppers consists of three genotypes

The strepsipteran parasite Elenchus japonicus (Strepsiptera, Elenchidae) of planthoppers consists of three genotypes

Insecticide susceptibility of the small brown planthopper, Laodelphax striatellus Fallen(Homoptera: Delphacidae), collected from East Asia.

Evidence for high dispersal ability and mito-nuclear discordance in the small brown planthopper, Laodelphax striatellus

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