Seasonal development of Leptotrombidium scutellare (Acari : Trombiculidae) observed by experimental rearing in field conditions

Takahashi, M.; Misumi, Hiroyasu; Matsuzawa, Hirofumi; Morita, Koji; Tsuji, Osamu; Hori, Eitaro; Kawamura, Akiyoshi; Tanaka, Hiroshi

doi:10.7601/mez.45.113

Cited by 6 publications

(5 citation statements)

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“…Asanuma (1983) (Suzuki, 1973(Suzuki, , 1977; called the Direct method by Suzuki, 1980), and also from the ground surface using a black cloth (Suzuki and Tabaru, 1987; (Fig, 1) (1980). Suzuki (l978, 1980Suzuki (l978, , 1981 Takahashi et al (1993Takahashi et al ( , 1994 …”

mentioning

confidence: 99%

Trombiculid fauna and seasonal occurrence of Leptotrombidium scutellare and Leptotrombidium pallidum in endemic and non-endemic areas for tsutsugamushi disease in Oita Prefecture, Japan

Pham¹,

Suzuki

Otsuka³

et al. 1999

Jap. J. Sanit. Zool.

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confidence: 99%

Trombiculid fauna and seasonal occurrence of Leptotrombidium scutellare and Leptotrombidium pallidum in endemic and non-endemic areas for tsutsugamushi disease in Oita Prefecture, Japan

Pham¹,

Suzuki

Otsuka³

et al. 1999

Jap. J. Sanit. Zool.

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“…1.5% of the engorged larvae were recovered between 144 and 156 hrs. and the period of feeding was the longest ( Usually, engorgement of some species of larval trombiculid mites takes an average of 30 to 60 hours (Arai, 1955;Asanuma, 1959;Obata and Aoki, 1958;Takahashi et al 1991), but the duration of periods in which the Iarvae of L. intermedium bite human skin and that of mice were longer than those observed by the investigators as mentioned above.…”

Section: Methodsmentioning

confidence: 88%

“…The infestation rate of L. intermedium exposed on human skin was 1.5% (2/130) in the present study, and it is fairly low compared with that of L. scutellare (15.0--40.0%) (Sasa et at. 1953: Kitaoka et al, 1953Hayashi and Tanaka, 1955;Toriyama et at., 1988) (Obata and Aoki, 1958;Takahashi et al 1991). Obata, 1961;Takahashi et al, 1991 (Arai, 1955;Sasa, 1956;Toriyarna et al 1988 (Tamiya, 1962;Nakata, 1976).…”

Section: Nii-electronic Library Servicementioning

confidence: 99%

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Dermatosis caused by the bite of trombiculid mite larvae, Leptotrombidium intermedium (Nagayo, Mitamura et Tamiya, 1920) (Prostigmata : Trombiculidae)

Misumi

Takahashi

et al. 2000

Jap. J. Sanit. Zool.

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“…The geographical distribution of scrub typhus vectors across the Republic of Korea (ROK) 15 , which has been studied since 1980, has been dominated by two species, Leptotrombidium pallidum in the northeastern provinces and L. scutellare in the southwestern provinces 16 . Japanese studies found that L. scutellare grew from mites to adults between April and August, whereas L. pallidum emerged from June and peaked in late July, August, and early September 17 .…”

Section: Introductionmentioning

confidence: 99%

The Association Between Climate Factors and Scrub Typhus Incidence in South Korea in 2001–2019

Seo

Choi

Hong

2022

Preprint

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Background: Global warming has compromised human health by increasing the incidence of infectious diseases. Scientific evidence is required to expand the knowledge of the association between meteorological factors and the incidence of infectious diseases. Our study focused on meteorological factors such as ambient temperature (AT), humidity, and scrub typhus incidence.Objective: We aimed to investigate the long-term effects of AT and relative humidity (RH) elevation on scrub typhus incidence in South Korea.Method: Meteorological variables were combined with scrub typhus cases reported from 2001 to 2019 in South Korea. A generalized additive model was used to explore the nonlinearity of the lagged association between meteorological variables and weekly scrub typhus incidence. To explore the long-term association between meteorological factors and scrub typhus incidence, the difference between annual mean AT or the annual number of heatwave days during 2001 to 2019 and those of the period 1971–2000 were linearly regressed on annual cumulative scrub typhus incidence.Results: Association between weekly scrub typhus incidence and mean temperature or relative humidity with 15 weeks lags showed V- or U- shaped relationship. Above the threshold temperature (14.9°C to 17.0°C), scrub typhus incidence increased by 1.85% (95% CI: 1.5, 2.2) per 0.1°C elevation in mean temperature with 15 weeks lags. Scrub typhus incidence increased by 3.7% (95% CI: 2.7%, 4.8%) and 2.5% (95% CI: 1.6%, 3.3%) per 0.1°C increase in annual mean temperature and per one day increase in heat wave days.Conclusion: Mean AT elevation and RH increase in summer were associated with an increased incidence of scrub typhus in the fall. Increases in annual mean AT and annual number of heatwave days were associated with an increase in the incidence rate during 2001–2019.

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Seasonal development of Leptotrombidium scutellare (Acari : Trombiculidae) observed by experimental rearing in field conditions

Cited by 6 publications

References 1 publication

Trombiculid fauna and seasonal occurrence of Leptotrombidium scutellare and Leptotrombidium pallidum in endemic and non-endemic areas for tsutsugamushi disease in Oita Prefecture, Japan

Trombiculid fauna and seasonal occurrence of Leptotrombidium scutellare and Leptotrombidium pallidum in endemic and non-endemic areas for tsutsugamushi disease in Oita Prefecture, Japan

Dermatosis caused by the bite of trombiculid mite larvae, Leptotrombidium intermedium (Nagayo, Mitamura et Tamiya, 1920) (Prostigmata : Trombiculidae)

The Association Between Climate Factors and Scrub Typhus Incidence in South Korea in 2001–2019

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