Ecological studies on Japanese encephalitis (JE) in Osaka Prefecture 6. Surveillance of JE virus activity and the vector mosquito abundance during the years 1968-1997

Nakamura, Hiroshi; Yoshida, Masahiro; Kimura, Akio; Yumisashi, Takahiro; Kimura, Tomoaki; Ueba, Noboru; Kunita, Nobuharu

doi:10.7601/mez.53.29_1

Cited by 6 publications

(5 citation statements)

References 13 publications

(1 reference statement)

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“…27 Conversely, the number of Cx. tritaeniorhynchus mosquitoes at the end of July in the 1970s, and from the end of August to the beginning of September after the 1990s in Toyama Prefecture.…”

Section: Discussionmentioning

confidence: 99%

Continuity and Change of Japanese Encephalitis Virus in Toyama Prefecture, Japan

Obara¹,

Yamauchi²,

Watanabe³

et al. 2011

The American Society of Tropical Medicine and Hygiene

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Abstract. To determine the mechanisms of maintenance and evolution of Japanese encephalitis virus (JEV) in a temperate zone, we attempted to isolate JEV from mosquitoes and pigs in Toyama Prefecture, Japan. A total of 87 JEVs were isolated from female Culex tritaeniorhynchus mosquitoes and pigs during [2005][2006][2007][2008][2009]. The prevalence of JEV in Toyama Prefecture was seasonally late in comparison with that of the virus during 1966-1972. Furthermore, JEVs were isolated after the peak in the number of female Cx. tritaeniorhynchus . Among JEV strains isolated in this study, two distinct groups were observed within genotype I of the phylogeny generated from nucleotide sequence information derived from the envelope and capsid/premembrane genes: strains belonging to the major type were isolated during 2005-2009, and strains from the minor type were isolated only in 2007. The major type has exhibited gradual change in its envelope and capsid/ premembrane genes, and all isolates obtained in 2008 and 2009 had a novel deletion of seven nucleotides in the variable region of the 3′-untranslated region.

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Section: Discussionmentioning

confidence: 99%

Continuity and Change of Japanese Encephalitis Virus in Toyama Prefecture, Japan

Obara¹,

Yamauchi²,

Watanabe³

et al. 2011

The American Society of Tropical Medicine and Hygiene

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“…Day & Curtis, 1993; McCreadie, Adler & Masteller, 1994; Lounibos et al. , 1997; Wegbreit & Reisen, 2000; Nakamura et al. , 2002; DeGaetano, 2005).…”

Section: Introductionunclassified

“…Most of these data remain unpublished, but the published studies have contributed to our understanding of predator/prey interactions, local and regional impacts of weather on population dynamics and spatial variability in population dynamics (e.g. Day & Curtis, 1993;McCreadie, Adler & Masteller, 1994;Lounibos et al, 1997;Wegbreit & Reisen, 2000;Nakamura et al, 2002;DeGaetano, 2005). Most freshwater macroinvertebrates are not economically or medically important and their distribution and abundance have not been commonly measured as part of fisheries or pest management programmes.…”

Section: Introductionmentioning

confidence: 99%

Long‐term studies of freshwater macroinvertebrates: a review of the frequency, duration and ecological significance

2006

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1. The importance of a long-term ecological perspective is well documented, yet the availability of long-term data remains limited. This paper highlights the value of long-term ecological studies of freshwater macroinvertebrates by reviewing both the availability of long-term data and recent ecological contributions based on them. 2. A survey of recent literature on stream macroinvertebrates identified 46 papers published between 1987 and 2004 that included long-term (i.e. ‡5 years) data. Most recently published long-term studies of stream macroinvertebrates began collecting data in the 1970s and 1980s and their duration (time between first and last year sampled) was relatively brief (median ¼ 9 years, maximum ¼ 96 years). Most studies did not expand their temporal perspective by incorporating older data collected by other researchers. 3. Recent long-term studies of macroinvertebrates have made major contributions to our understanding of interannual variation and cycles, complex abiotic and biotic interactions, and natural and anthropogenic disturbance and recovery. Without these studies, we would know much less about the magnitude of natural temporal variation, the importance of physical and biological disturbance and interactions, the role of pathogens and introduced species, the overall impact of pollution and the effectiveness of protection and remediation efforts. 4. If we are to encourage long-term perspectives in our science, we need to facilitate the transfer of individual studies, as well as knowledge and data, among scientists. This includes efforts to archive and annotate data more effectively, so that they can be more easily incorporated into future research.

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“…The significance of the difference in mean density was evaluated by t-test after log (1+n) transformation. (Table 2) 2 2 4% (Table 1) 2012 Wada et al, 1975;Nakamura et al, 2002 …”

mentioning

confidence: 97%

Effects of tsunami on distribution and abundance of mosquitoes in rice-field areas in southern Miyagi and Fukushima Prefectures, Japan in 2012, the second year after the Great East Japan Earthquake

Tsuda

Ishida

Yamanouchi

et al. 2013

Jap. J. Sanit. Zool.

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Ecological studies on Japanese encephalitis (JE) in Osaka Prefecture 6. Surveillance of JE virus activity and the vector mosquito abundance during the years 1968-1997

Abstract: Ecological studies on Japanese encephalitis 6. Surveillance of JE virus activity and abundance during the years

Cited by 6 publications

References 13 publications

Continuity and Change of Japanese Encephalitis Virus in Toyama Prefecture, Japan

Continuity and Change of Japanese Encephalitis Virus in Toyama Prefecture, Japan

Long‐term studies of freshwater macroinvertebrates: a review of the frequency, duration and ecological significance

Effects of tsunami on distribution and abundance of mosquitoes in rice-field areas in southern Miyagi and Fukushima Prefectures, Japan in 2012, the second year after the Great East Japan Earthquake

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