Eradication programs of two sweetpotato pests, Cylas formicarius and Euscepes postfasciatus, in Japan with special reference to their dispersal ability

Seiichi Moriya, Takahisa Miyatake

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Eradication programs are being implemented for 2 sweetpotato weevil pests, Cylas formicarius and Euscepes postfasciatus, in the Ryukyu Islands located in the southernmost part of Japan by the application of the sterile insect technique (SIT). As it is essential for the implementation of the programs to assess the dispersal ability of the weevils, recent studies were reviewed. Both the flight and walking ability of C. formicarius was much higher in males than in females when determined in the laboratory. Synthesized sex pheromone of C. formicarius has been used as a strong lure to capture the males in the field. Results of the mark-recapture experiments suggest that a distance of at least 2 km is needed for the range of the buffer zone to separate the SIT target area from others. Since E. postfasciatus is unable to fly, only the walking ability was evaluated in the laboratory, indicating that the females exhibited a fairly higher locomotion activity compared with the males. Since no effective attractant for E. postfasciatus has been identified yet, information on the dispersal activity in the field is limited. Fundamental studies should be conducted to determine the dispersal ability of both weevil pests to implement successfully the eradication programs.

Original languageEnglish
Pages (from-to)227-234
Number of pages8
JournalJapan Agricultural Research Quarterly
Volume35
Issue number4
Publication statusPublished - Oct 2001

Fingerprint

Euscepes postfasciatus
Cylas formicarius
Weevils
sterile insect technique
Japan
pests
walking
Curculionidae
Walking
Insects
Cylas formicarius elegantulus
insect
Sex Attractants
attractant
sex pheromone
Ryukyu Archipelago
buffer zone
locomotion
attractants
Locomotion

Keywords

  • Kagoshima
  • Okinawa
  • Sex pheromone
  • Sterile insect technique (SIT)

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)

Cite this

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abstract = "Eradication programs are being implemented for 2 sweetpotato weevil pests, Cylas formicarius and Euscepes postfasciatus, in the Ryukyu Islands located in the southernmost part of Japan by the application of the sterile insect technique (SIT). As it is essential for the implementation of the programs to assess the dispersal ability of the weevils, recent studies were reviewed. Both the flight and walking ability of C. formicarius was much higher in males than in females when determined in the laboratory. Synthesized sex pheromone of C. formicarius has been used as a strong lure to capture the males in the field. Results of the mark-recapture experiments suggest that a distance of at least 2 km is needed for the range of the buffer zone to separate the SIT target area from others. Since E. postfasciatus is unable to fly, only the walking ability was evaluated in the laboratory, indicating that the females exhibited a fairly higher locomotion activity compared with the males. Since no effective attractant for E. postfasciatus has been identified yet, information on the dispersal activity in the field is limited. Fundamental studies should be conducted to determine the dispersal ability of both weevil pests to implement successfully the eradication programs.",
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