Using the Mark-and-Release Method in the Estimation of Adult Population of Sweet Potato Weevil, Cylas formicarius (Fabricius) in a Sweet Potato Field

Sugimoto, Tuyosi; SAKURATANl, Yasuyuki; Setokuchi, Osamu; Kamikado, Takahiro; Kiritani, Keiji; Okada, Toshitsugu

doi:10.1303/aez.29.11

Cited by 7 publications

(6 citation statements)

References 9 publications

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“…To recognize each individual for longitudinal analysis, we spotted the elytra of the weevil with oily drying paint (Magic Opaque Color, Teranishi, Osaka, Japan). The marking method, which was similar to that used by Sugimoto et al (1994), did not affect weevil mortality. Two incubators were used to maintain each sex separately to minimize the effect of pheromone on weevil behaviour.…”

Section: Methodsmentioning

confidence: 99%

Age‐dependent investment in death‐feigning behaviour in the sweetpotato weevil Cylas formicarius

Kuriwada

Kumano

Shiromoto

et al. 2011

Physiological Entomology

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Because life-history theory predicts that risky behaviours such as mating should increase as life expectancy decreases, predatory avoidance is expected to decrease with age. However, this prediction has not been examined. In the present study, the effect of age on death-feigning behaviour, a form of predatory avoidance behaviour in the sweetpotato weevil Cylas formicarius (Summers) (Coleoptera: Brentidae), is investigated by performing a longitudinal study. Because the effects of mating history and age usually cannot be distinguished, mating history is controlled. The results show that only female weevils decrease the investment in death-feigning behaviour with age, whereas male weevils do not show any age-related change. In addition, death-feigning behaviour of mated females is longer than that of virgin females, possibly because additional mating partners would be not needed by mated females.

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Section: Methodsmentioning

confidence: 99%

Age‐dependent investment in death‐feigning behaviour in the sweetpotato weevil Cylas formicarius

Kuriwada

Kumano

Shiromoto

et al. 2011

Physiological Entomology

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“…3), we determined that sterile weevil release controlled wild weevils to nearly zero in patches with a low weevil density (poor patches), but failed to control them in patches with a high weevil density (rich patches). This difference in the effect of sterile weevil release among patches would be mainly related to the low dispersal ability of this weevil, especially in the presence of host plant foliage (Sugimoto et al, 1994a).…”

Section: Discussionmentioning

confidence: 99%

“…2). However, this does not indicate the peak of the seasonal abundance of the wild population, because the captivity efficiency of the tuber trap tends to fall with the thick growth of host plants around them (Sugimoto et al, 1994a). Namely, wild host plants grew thickest during summer to autumn, and so the captivity efficiency of the trap fell during this season in spite of the peak of the wild population (Yasuda, 1995).…”

Section: Root Trapsmentioning

confidence: 97%

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Efficiency of the sterile insect release method as an eradication measure for the sweet potato weevil, Cylas formicarius(Fabricius)(Coleoptera: Brentidae) in the field.

Setokuchi

Sugimoto

Yamaguchi

et al. 2001

Appl. Entomol. Zool.

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A small scale experiment was carried out to eradicate the sweet potato weevil, Cylas formicarius (Fabricius) by the sterile weevil release method from 1994 to 1996 on the islet, Kiyamajima, 35 ha, of the Amami Islands, Kagoshima Prefecture, Japan. Weevils were mass-reared with fresh sweet potato roots at 27°C and roots filled with the weevils were irradiated with gamma ray, 80 Gy on the 27th to 28th days after oviposition (newly eclosed adult). Sterile weevils were stained with fluorescent dyes and released by hand on host plant foliages. Monitoring was done by both pheromone traps and root traps throughout the experimental period. From 11 January, 1994 to 19 July, 1994, ca. 32,000 sterile weevils were released every 10 d as a rule all over the island. This trial suggested the necessity of a denser release of sterile weevils for successful eradication. Thus, for intensive release ca. 16,000 sterile weevils were released every 10 d as a rule from 29 July, 1994 to 5 September, 1995 in a restricted area, 13 ha, as the release zone. The wild population in the release zone was controlled to zero or at least nearly to zero after summer in 1995. Only a few unmarked males were captured by pheromone traps for one year after the final release of sterile weevils on 5 September, 1995, which was probably immigrants from outside of the release zone. No weevils were found in the reexamination of root traps and dissection of wild host plants carried out in September in 1996.

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“…The dispersal ability of many pest insects associated with SIT programs has been investigated [e.g., Mediterranean fruit fly, Ceratitis capitata (Wiedemann) (Wakid, 1976); melon fly, Bactrocera cucurbitae (Coquillett) (Hamada, 1980; Nakamori & Soemori, 1981); screw‐worm, Cochliomyia hominivorax (Coquerel) (Mayer & Atzeni, 1993); boll weevil, Anthonomus grandis grandis Boheman (Johnson et al., 1975, 1976; Culin et al., 1990); C. formicarius (Cockerham et al., 1954; Mason et al., 1990; Sugimoto et al., 1994a,b; Miyatake et al., 1995, 1997, 2000; Shimizu & Moriya, 1996b,c; Moriya & Hiroyoshi, 1998; Kumano et al., 2007); and E. postfasciatus (Kinjo et al., 1995; Shimizu & Morita, 1996a,c; Yasuda, 1996a,b; Nakamoto & Takushi, 2001). Most of these studies have focused on either the dispersal ability of irradiated insects in the laboratory or that of non‐irradiated insects in the field.…”

Section: Introductionmentioning

confidence: 99%

Irradiation does not affect field dispersal ability in the West Indian sweetpotato weevil, Euscepes postfasciatus

Kumano

Kawamura

Haraguchi

et al. 2008

Entomologia Exp Applicata

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The effect of irradiation on the dispersal ability of males and females of the flightless West Indian sweetpotato weevil, Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae), a major sweet potato pest, was examined in the field using mark-release-recapture techniques. To evaluate the dispersal ability of the weevil, we released 7 619 weevils in two replicates (July and August 2007). Each replicate lasted 5 days from release to sampling and consisted of one weevil release and two weevil samplings. Thirty-two traps were placed in lines corresponding to eight compass directions and in four distance classes (8, 12, 16, and 20 m) in each replicate. We captured 709 (9.3%) weevils in the two replicates. Weevils dispersed at least 20 m from the release point in 2 days, regardless of sex or irradiation. Dispersal was strongly affected by wind direction, and in both replicates most weevils were recaptured in upwind directions. The mean dispersal distance for non-irradiated weevils was about 11 m per 2 days. Although there were some differences between sexes in recapture rate and dispersal distance, there was no consistent difference between irradiated and non-irradiated weevils in dispersal distance. We conclude that irradiation does not affect the dispersal ability of flightless E. postfasciatus in the field.

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Using the Mark-and-Release Method in the Estimation of Adult Population of Sweet Potato Weevil, Cylas formicarius (Fabricius) in a Sweet Potato Field

Cited by 7 publications

References 9 publications

Age‐dependent investment in death‐feigning behaviour in the sweetpotato weevil Cylas formicarius

Age‐dependent investment in death‐feigning behaviour in the sweetpotato weevil Cylas formicarius

Efficiency of the sterile insect release method as an eradication measure for the sweet potato weevil, Cylas formicarius(Fabricius)(Coleoptera: Brentidae) in the field.

Irradiation does not affect field dispersal ability in the West Indian sweetpotato weevil, Euscepes postfasciatus

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