Diurnal Changes in Micro-Habitat Usage and Behavior of Cylas formicarius (FABRICIUS) (Coleoptera: Curculionidae) Adults

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

doi:10.1303/aez.29.307

Cited by 26 publications

(11 citation statements)

References 2 publications

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“…Here, the performance of the wild population of C. formicarius observed from fall to the following spring in the southwestern islands is as follows. The nighttime temperature is important to the weevil regarding its seasonal performance, because it is active during the night due to its nocturnality (Sakuratani et al, 1994). According to reports on its seasonal trends on Kikaijima Is., ca.…”

Section: Discussionmentioning

confidence: 99%

Cold tolerance of the sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), from the Southwestern Islands of Japan

Kandori

Kimura

Tsumuki

et al. 2006

Appl. Entomol. Zool.

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The cold tolerance of Cylas formicarius from five islands in the southwest of Japan was studied. The thermal threshold of the reproductive activity of adults tended to be lower and the supercooling point of the pupae was a little higher for the Okinawa-Honto population than for the others. The cold tolerance of the adult weevils was slightly accelerated by cold acclimation to 15°C for 4 d. Reproductive diapause induced under 10L : 14D increased cold tolerance significantly. Therefore, the cold tolerance of adult weevils would be accelerated by both cold acclimation at decreasing temperatures from autumn to winter and reproductive diapause induced by short daytime hours. When considering the increased cold-tolerence of C. formicarius through such mechanisms together with the temperature conditions in winter at the northern edge of its distribution area in the USA, C. formicarius probably has the capability to survive in the coastal zone of the Pacific Ocean in southern and central Japan.

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Section: Discussionmentioning

confidence: 99%

Cold tolerance of the sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), from the Southwestern Islands of Japan

Kandori

Kimura

Tsumuki

et al. 2006

Appl. Entomol. Zool.

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“…We investigated the mating behavior of C. formicarius group weevils in two experiments. All the observations were started at 1700 hours because C. formicarius group weevils mate in the evening (Sakuratani et al 1994). After sunset at 1800 hours, the mating behavior was observed under a ßash-light (GENTOS SuperFire X SF-303X, Saint-Gentleman Co. Ltd., Tokyo, Japan) covered with red cellophane.…”

Section: Methodsmentioning

confidence: 99%

Is Elytral Color Polymorphism in Sweetpotato Weevil (Coleoptera: Brentidae) a Visible Marker for Sterile Insect Technique?: Comparison of Male Mating Behavior

Shiromoto¹,

Kumano²,

Kuriwada³

et al. 2011

jnl. econ. entom.

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The sterile insect technique (SIT) is widely used for suppressing or eradicating target pest insect populations. In the eradication programs using the SIT, a large number of sterile insects are marked and released in the field. In Japan, Cylas fonnrmicarius (F.) group (Coleoptera: Brentidae) weevils are marked with a fluorescent powder dye to monitor the progress of such programs. However, this monitoring technique is not fully effective because of the disappearance or contamination of the dye. Therefore, an alternative marking method is required. Currently, a rare color morph such as piceous elytra (PE) is used for visible marking of C. formicarius group weevils. A PE-monomorphic strain has previously been established by artificial selection from a small locally distributed population; this can lead to reduced survival and genetic changes in behavioral traits due to inbreeding depression. In this study, we evaluated the survival rate and mating behavior of PE males of C. formicarius group. The characteristics of the PE males were similar to those of the wild strain (WS) males. Thus, we considered that PE males were suitable for visible marking in the eradication programs using the SIT.

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“…Diketahui bahwa kulit umbi dekat pangkal batang merupakan tempat yang disukai oleh imago betina C. formicarius untuk meletakkan telurnya (Sakuratani et al 1994;Samantaray & Korada, 2016). Larva instar I yang baru keluar dari telur langsung makan umbi yang ada, yang menimbulkan kerusakan pada umbi tersebut.…”

Section: Hasil Dan Pembahasanunclassified

Perbandingan Metode Aplikasi Jamur Entomopatogen Beauveria Bassiana Untuk Pengendalian Cylas Formicarius (Coleoptera: Curculionidae)

Prayogo¹

2017

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA

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Comparing application methods of entomopathogenic fungus Beauveria bassiana to control Cylas formicarius (Coleoptera: Curculionidae). Cylas formicarius is a major pest of sweet potatoes. The tuber damage caused by C. formicarius reaches 100%. The research objective was to compare application methods of entomopathogenic fungi Beauveria bassiana to control C. formicarius. The research was conducted at the entomology screen house of Indonesian Legume and Tuber Crops Research Institute (ILETRI) at Malang, East Java, from January to September 2013. The treatment consisted of 12 application methods, each was repeated three times. The results showed that application of B. bassiana into the planting pit, soaking the sweet potato cuttings into the conidial suspension of B. bassiana for 30 minutes before planting, followed by spray application with two week interval (2 to 12 weeks after planting, WAP) or P4 was effective in suppressing C. formicarius population and tuber damage. Tuber weight obtained from P4 treatment was 1.4 kg plant -1 , while from the chemical insecticide was only 1.1 kg plant -1 . Tuber damage from P4 treatment was lower ( 5%) than that from chemical insecticide treatment (42%). Therefore, application of B. bassiana conidial suspension in the planting pit, continued by soaking the sweet potato cuttinginto the B. bassiana conidial suspension for 30 minutes before planting, and followed by spray applications of B. bassiana conidial suspension at two-week intervals ( 2-12 WAP) or P4 method can be recommended to control C. formicarius.Key words: adult, egg, larvae, tuber damage, tuber weight ABSTRAKPerbandingan metode aplikasi jamur entomopatogen Beauveria bassiana untuk pengendalian Cylas formicarius (Coleoptera:Ccurculionidae). Cylas formicarius merupakan hama utama ubi jalar. Kerusakan yang disebabkan C. formicarius mencapai 100%. Penelitian ini bertujuan untuk membandingkan metode aplikasi jamur entomopatogen, Beauveria bassiana dalam mengendalikan C. formicarius. Penelitian dilakukan di rumah kasa entomologi, Balai Penelitian Tanaman Aneka Kacang dan Umbi (BALITKABI), Malang pada bulan Januari sampai dengan September 2013. Perlakuan terdiri atas 12 metode aplikasi, masing-masing perlakuan diulang tiga kali. Hasil penelitian menunjukkan bahwa aplikasi konidia B. bassiana ke dalam lubang tanam, perendaman stek ke dalam suspensi konidia jamur B. bassiana selama 30 menit sebelum tanam, dilanjutkan aplikasi semprot dengan interval dua minggu mulai umur 2 sampai dengan 12 minggu setelah tanam (MST) (P4) efektif menekan populasi C. formicarius dan kerusakan umbi. Berat umbi perlakuan P4 mencapai 1,4 kg tanaman -1 , sedangkan perlakuan aplikasi insektisida kimia hanya 1,1 kg tanaman -1 . Kerusakan umbi perlakuan P4 hanya 5%, sedangkan kerusakan umbi pada aplikasi insektisida kimia mencapai 42%. Efikasi perlakuan P4 dapat dilihat dari populasi telur, larva maupun imago pada waktu panen lebih sedikit dibandingkan dengan perlakuan lainnya. Oleh karena itu, aplikasi suspensi konidia B. bassiana pada luba...

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Diurnal Changes in Micro-Habitat Usage and Behavior of Cylas formicarius (FABRICIUS) (Coleoptera: Curculionidae) Adults

Cited by 26 publications

References 2 publications

Cold tolerance of the sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), from the Southwestern Islands of Japan

Cold tolerance of the sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), from the Southwestern Islands of Japan

Is Elytral Color Polymorphism in Sweetpotato Weevil (Coleoptera: Brentidae) a Visible Marker for Sterile Insect Technique?: Comparison of Male Mating Behavior

Perbandingan Metode Aplikasi Jamur Entomopatogen Beauveria Bassiana Untuk Pengendalian Cylas Formicarius (Coleoptera: Curculionidae)

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