Detection of Ipomeamarone in Feed Sweet Potatoes on the Poisoning by Moldy Sweet Potatoes

Ishii, Takumichi; Beppu, Akira; Nakanishi, A.; Moriki, Hiraku; Yasuda, K.; Tabara, Norio; Yamanaka, Naoaki

doi:10.12935/jvma.65.355

Cited by 1 publication

(1 citation statement)

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“…and Euscepes postfasciatus (Raman & Alleyne, ). Tubers infested by these weevils produce ipomeamarones, belonging to sesquiterpene group, which not only gives them a bitter taste, but also has a toxic effect on animals (Nakanishi, ; Ishii et al , ). Thus, weevil‐infested tubers cannot be used for any purpose.…”

Section: Introductionmentioning

confidence: 99%

Reduced dispersal and survival in the sweet potato weevil (Euscepes postfasciatus) after irradiation

Ichinose

Yasuda

Yamashita

et al. 2016

Agri and Forest Entomology

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1 In southern Japan, sweet potato weevils Euscepes postfasciatus (Fairmaire) are being eradicated using the sterile insect technique because of their damaging effects on sweet potato crops. However, the effect of irradiation on the dispersal and survival of this species needs to be evaluated. 2 We observed the dispersal of normal and irradiated weevils for 21 days after their release in a sweet potato field during all four seasons, and estimated their survival using the Weibull function. 3 Normal weevils generally moved further than irradiated weevils, and all weevils had greater dispersal distances in the summer than in the winter, with spring and autumn intermediate between these two extremes (summer: 0.23 m/day versus 0.29 m/day; winter: 0.15 m/day versus 0.07 m/day; spring: 0.20 m/day versus 0.17 m/day; autumn: 0.20 m/day versus 0.15 m/day, respectively). 4 Normal weevils had low variation in mean life expectancy (approximately 8 days throughout the year), whereas the life expectancy of irradiated weevils was drastically reduced in the summer (2.20 days). 5 The implications of these results for the efficiency of this eradication technique are discussed.

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Section: Introductionmentioning

confidence: 99%