クビアカツヤカミキリ Aromia bungii Faldermann）幼虫に対 …

1 53 51 62 29 2017 .. Aromia bungii Faldermann .. Efficacy of Insecticides against Larvae of Red Necked Longhorn Beetle, Aromia bungii (Faldermann) (Coleoptera: Cerambycidae). Takuro Yasuoka (Research Division, Yokohama Plant Protection Station, 1-6-10, Shin-Yamashita, Naka-ku, Yokohama, Kanagawa, 231-0801 Japan. Res. Bull. Pl. Prot. Japan. 53: 51-62. (2017). Abstract: Aromia bungii (Faldermann) (Coleoptera: Cerambycidae) , which is one of the serious pests of the Prunus species, was discovered in Japan in 2012. To find an effective measure against the pest, the efficacy of three insecticides, namely acetamiprid, fenpropathrin and metaflumizone, was tested for larvae of A.)

2 bungii that had infested flowering cherries Prunus (Cerasus) x yedoensis in the field. The larval mortality with each insecticide was evaluated by counting the number of active frass ejection holes ( those with ongoing frass ejection observed) over a certain period of time after injecting the insecticide into the holes. The number of active frass ejection holes was remarkably reduced and the reduction rates were 100%, and 100% with acetamiprid (400 ppm solution) , fenpropathrin (200 ppm aerosol) and metaflumizone (2500 ppm solution) , respectively. In some cases, frass ejection ceased for 1 to 3 weeks even at trees without insecticide injection.

3 This is interpreted to mean that the presence of live larvae may not necessarily be associated with frass ejection, suggesting that detection of infesting larvae by ejected frass observation may have limitations and that several injections should be applied to ensure effective control of the larvae of A. bungii . Key Words: Aromia bungii , acetamiprid, fenpropathrin, metaflumizone, pest control , 2015 .. 2015 . Aromia bungii Faldermann .. EPPO, 2015 . 2008 Prunus persica P. salicina P. mume . P. Cerasus yedoensis . 2011 2012 Diospyros kaki Populus . EPPO, 2014 European and Salix Quercus . Mediterranean Plant Protection Organization EPPO Hua, 2009.

4 Pest Risk Analysis: PRA . EPPO . EPPO A1 2015, EPPO EPPO, 2015 6 7. Wang et al,. 2007 .. EPPO, 2015 2012 . , 2014 . 52 53 . 6 7 .. 2 4 EPPO, 2015 1 . 1 .. 130cm . 2cm .. Steinernema carpocapsae . Hu et al., Wang et al., 2007 2 . 2016 12 .. 1 . Table 1 Research site and number of tested trees Synanthedon hector Bulter . , 2008 .. Number of planted . Number of Research site trees of P. yedoensis . tested trees at the site .. 2 1 . Tatebayashi 29 24. Gunma city .. 100 39. Akiruno city Tokyo 3 . 60 5. Fussa city 2 3 .. 400 26 . Saitama Soka city 2 . 2 . Table 2 Frass characteristics of Aromia bungii and Synanthedon hector.

5 Shape Contents Color 1 A).. 1E . 1 C, E). Cylindrical frass (Fig. 1A) . Wood chips are short and wide, not (Powdery such as (Fig. 1E) when larvae Varies from light yellow Aromia bungii fibrous. infest roots which are exposed to the to dark brown. Containing numerous wood chips and surface of the ground, or when the f ew a m o r p h o u s o r b a r re l s h ap e d infested trees weaken and reduce the excrement pellets (Fig. 1C, E). production of tree sap).. 1 B . 1 D, F 1 B, D .. Synanthedon Wood chips are occasionally coarse and Usually dark brown. Usually amorphous frass (Fig. 1B). hector fibrous. Excrement pellets in (often with bleeding sap).

6 C o n t a i n i n g f e w wo o d c h i p s a n d frass appear reddish nu m e ro u s b a l l o r b a r r e l s h ap e d (Fig. 1B, D). excrement pellets (Fig. 1D, F). 2017 3 53. 1 (A, C, E) (B, D, F) (A, B) (C, D, E, F) (E, F) . 1mm . 1 (A, Fig. C, E) (B, 1 Frass of Aromia bungii (A, C, E) and Synanthedon hector (B, D, F). C, D,D, F) (A, E and B) F are magnified by Scale bar in the . figure represents 1 mm. (C, D, E, F) (E, F) 1mm .. Fig. 1 Frass of Aromia bungii (A, C, E) and Synanthedon hector (B, D, F). C, D, E and F are magnified by Scale bar in the figure represents 1 mm. 2 . 54 53 . 3 1000 l . 3 1000 l .. Fig. 3 Device for injecting the insecticides made of 1000 l pipette Fig.

7 3 Device for injecting the insecticides made of 1000 l pipette tip and spray nozzle. tip and spray nozzle. 1 . 2 . 2 . Fig. 2 Plastic bag for confirming the frass ejection. Fig. 2 Plastic bag for confirming the frass ejection. 1 . 4 (A) (B) . Fig. 4 Method of insecticide injection. Frass was removed (A) and the insecticide was injected into the frass ejection hole (B). 4 (A) (B) . 4 2 .. 1 mm 10mm . Fig. 4 Method of insecticide injection. Frass was removed (A) and the insecticide was injected into .. the frass ejection hole (B).. 12mm . 2, 3 . Lot No. TEG-901 50 400ppm .. 2 .. , Lot No. TMMCE15A 200ppm . , . Lot No. 100.

8 2500ppm 3 4 . 2017 3 55. 1 . 25ml . 5 15 3 . 1 6 . 3 . 3 7 14 21 . 28 . 3 14 . 28 . 1 2 .. 1 . 2 100 .. 100 100 .. 3 . 28 .. 100 100 1 .. 2 . 2 1 1 . 2016 6 20 7 18 2 7 20 2 28 10 7 . 8 17 1 . 2016 7 25 8 22 2 8 25 21 9 22 1 2016 8 2 3 . 9 9 6 2 9 9 10 7 . 1 6 2 . 21 8 30 2 5 . 20 10 7 . 2 6 3 . 11 .. 5 (A) (B) . 5 (A) . Fig. 5 Adult exit hole made by larva (A). White arrows show frass ejection holes. Bark removed (B). (B) . Fig. 5 Adult exit hole made by larva (A). White arrows show frass ejection holes. Bark removed (B). 56 53 . 3 Aromia bungii . Table 3 Number of larval frass ejection holes of Aromia bungii after insecticide injection.

9 Number of frass ejection 1).. holes % reduction of frass . Concentration Date of insecticide ejection Insecticide Research site Number of (ppm) injection Days after treatment (% reduction of frass sample trees ejection relative to 0 3 7 14 21 28 control)1). 2016 6 20 5 10 4 5 2 2 2. 20 Jun. 2016 ( ). Tatebayashi city, Gunma 2016 7 20 5 13 7 5 3 3 3. 20 Jul. 2016 ( ). 400. Acetamiprid 2016 7 25 7 11 4 1 2 1 1. 25 Jul. 2016 ( ). Akiruno city and 2016 8 25 . Fussa city, Tokyo 9 11 3 0 0 0 0 100. 25 Aug. 2016. 2016 7 25 10 14 0 1 1 1 1. 25 Jul. 2016 ( ). Akiruno city and 2016 8 25 Fussa city, Tokyo 10 14 3 3 4 4 4. 25 Aug. 2016 ( ).

10 200. Fenpropathrin 2016 8 9 2) 9 12 1 2 3 2 3. 9 Aug. 2016 . Soka city, Saitama 2016 9 9 ). 10 11 1 1 2 2 0. 9 Sep. 2016 ( )3). 2016 6 20 7 11 7 5 2 2 2. 20 Jun. 2016 ( ). Tatebayashi city, Gunma 2016 7 20 . 9 14 11 4 1 0 0 100. 20 Jul. 2016. 2500. Metaflumizone 2016 7 25 9 12 7 2 1 1 1. 25 Jul. 2016 ( ). Akiruno city and 2016 8 25 Fussa city, Tokyo 9 12 7 2 2 1 1. 25 Aug. 2016 ( ). 2016 6 20 . 7 11 11 11 9 10 9. 20 Jun. 2016. Tatebayashi city, Gunma 2016 7 20 . 8 13 13 11 12 12 11. 20 Jul. 2016. 2016 7 25 6 10 10 8 9 8 8. 25 Jul. 2016. - Control Akiruno city and 2016 8 25 . Fussa city, Tokyo 6 11 11 10 9 8 9. 25 Aug. 2016.