Estimating the Reproductive Properties of the Sweet Potato Weevil, Cylas formicarius (FABRICIUS) (Coleoptera, Brentidae)

Sugimoto, Tuyosi; Sakuratani, Yasuyuki; Fukui, H.; Kiritani, Keiji; Okada, Toshitsugu

doi:10.1303/aez.31.357

Cited by 27 publications

(32 citation statements)

References 9 publications

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“…However, in our study, exposure to sex pheromone did not affect male mating behavior. Male C. formicarius can mate with several females in a single night (Sugimoto et al 1996;Kuriwada et al 2009). Therefore, behavioral plasticity depending on experience of exposure to sex pheromone will be not adaptive.…”

Section: Discussionmentioning

confidence: 99%

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Pre-exposure to sex pheromone did not affect mating behavior in the sweetpotato weevil Cylas formicarius

et al. 2010

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In sterile insect technique (SIT) programs, the released sterile males are important for their effectiveness. The use of sex pheromones to collect males is economical; however, pre-exposure to sex pheromones may affect male mating behavior, and would thus reduce the effectiveness of the SIT programs. Males exposed to sex pheromone may become attractive to other males due to pheromone adsorption on their body impregnation, prevent mating and reduce the dispersal of sterile males. We examined the effect of pre-exposure to sex pheromone on the mating behavior of male sweetpotato weevil Cylas formicarius. Pre-exposure to high-dose sex pheromone for 24 h did not affect the male mating behavior of C. formicarius, and the exposed males did not attract other males. These results suggest that male C. formicarius that were collected from a mass-rearing facility using sex pheromone can be effectively used in SIT programs.

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Section: Discussionmentioning

confidence: 99%

“…Under the field condition, female weevils secrete sex pheromone, and male weevils search for mating partners using the sex pheromone (Heath et al 1986, Sugimoto et al 1996. If male body absorbs the sex pheromone, mate searching behavior will be disturb by the absorbed sex pheromone.…”

Section: Discussionmentioning

confidence: 99%

Pre-exposure to sex pheromone did not affect mating behavior in the sweetpotato weevil Cylas formicarius

et al. 2010

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“…Therefore, other factors, in addition to food, inßuence the release of pheromone and thus the maleÕs attractivity in the bioassays. In some species, such as Cylas formicarius (F.), pheromone production ended after mating (Sugimoto et al 1996).…”

Section: Discussionmentioning

confidence: 99%

Evidence for a Male-Produced Aggregation Pheromone in <I>Scyphophorus acupunctatus</I> Gyllenhal (Coleoptera: Curculionidae)

Ruiz-Montiel¹,

González‐Hernández²,

Leyva³

et al. 2003

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Olfactory response of male and female Scyphophorus acupunctatus Gyllenhal (Coleoptera: Curculionidae) to volatiles released from the same or opposite conspecifics alone, or combined with host plant volatiles, was evaluated in the laboratory and field. We also evaluated the response to synthetic Rhynchophorinae pheromones in the laboratory. In laboratory tests, attraction of males and females in Y-tube olfactometer to conspecific males was greater than to females and clean air. Males and females preferred the combination males + agave over agave alone. Both sexes were significantly attracted to 2-methyl-4-heptanol and 2-methyl-4-octanol compared with hexane control. In field trials, weevils were successfully caught in the traps baited with conspecifics and plant material. These field results support those of the laboratory bioassays, showing that males attracted conspecific males and females and addition of plant material enhanced the attraction. These results further suggest that S. acupunctatus produces an aggregation pheromone.

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“…Pupae removed from the root were placed in a plastic container. Ten to 13 females and five males were released per Petri dish (type I) several days after adult emergence within a day, as newly emerged adults are very delicate (Sugimoto et al, 1996). They were presented a small disc of three artificial diets or sweet potato root (diameter, 1.2 cm; thickness, 1 cm) cut with a cork borer.…”

Section: Methodsmentioning

confidence: 99%

Rearing the sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae) on an artificial diet developed for the West Indian sweet potato weevil, Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae)

Shimizu

Haruno

Yamagishi

2007

Appl. Entomol. Zool.

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The sweet potato weevil, Cylas formicarius, a serious pest of sweet potato, was reared on an artificial diet originally developed for Euscepes postfasciatus, another serious pest of sweet potato. When larvae were reared individually on the diet, the rate of adult emergence was 46%. The addition of corn oil or sesame oil to this diet improved the rate of larvae reaching the prepupal stage, and enhanced the rate of adult emergence to about 60%. On the other hand, the emergence rate was about 10% when 27-30 larvae were reared in a group. More larvae died at the first instar when reared in a group than when reared individually. In group rearing, frequent physical contact among larvae caused them to die due to injury, before they bored into the diet. Successful boring into the diet seems the first step for successful adult emergence. Females of C. formicarius did not oviposit on the E. postfasciatus diet. Replacement of the sweet potato powder contained in the diet with dried periderm of sweet potato and dried stems of wild morning glory did not improve the situation, even though the females were reproductively mature. Ovarian development was not good when rearing on these artificial diets. It is necessary to develop a novel artificial diet for egg collecting on which females can develop eggs and oviposit.

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Estimating the Reproductive Properties of the Sweet Potato Weevil, Cylas formicarius (FABRICIUS) (Coleoptera, Brentidae)

Cited by 27 publications

References 9 publications

Pre-exposure to sex pheromone did not affect mating behavior in the sweetpotato weevil Cylas formicarius

Pre-exposure to sex pheromone did not affect mating behavior in the sweetpotato weevil Cylas formicarius

Evidence for a Male-Produced Aggregation Pheromone in <I>Scyphophorus acupunctatus</I> Gyllenhal (Coleoptera: Curculionidae)

Rearing the sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae) on an artificial diet developed for the West Indian sweet potato weevil, Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae)

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