This report is a part of research on pests occurring in grapevine orchards in export complexes (Hwangsung in Gyeonggi, Sangju and Yeongcheon in Gyeongbuk, Namwon in Junbuk and Yeongdong in Chungbuk) from 2010 to 2012. This research was conducted to evaluate the distribution and difference in damage rates depending on management types of grapevine orchards (domestic sale farm vs. export farm). Damage by Arbordia spp. occurred only in 2010 and differed depending on localities and individual farms in the same area. Numbers of orchards damaged by Arbordia spp. were one, two and four in Hwasung, Namwon and Sangju, respectively, and the damage rate was below 6.2%. There was no damage in the orchards in 2011 and 2012, however, Arbordia spp. were collected on sticky traps in the orchards. A. nigrigena and A. kakogawana were the dominant species in Yeongcheon and Yeongdong, respectively, in 2011. A. kakogawana, A. maculifrons and A. nigrigena were collected on sticky traps in 2012. Collected numbers of Arbordia spp. were different depending on localities and management types of the orchards (domestic sale vs. export). A. kakogawana was the dominant species in all the survey sites and the densities were higher in the domestic sale farms than in the export farms.

This study was carried out to investigate the antimicrobial resistance pattern and distribution of resistance gene determinants in fecal E. coli from chicken. Antimicrobial susceptibility test was performed on a total of 109 fecal E. coli isolates from chicken, collected in Gyeonggi, Chungbuk, Jeonnam and Jeonbuk province from March to November 2003, by the disk agar diffusion method. Eighteen commonly used antimicrobial agents approved in Korea as veterinary medicine were tested: ampicillin (AM), amoxicillin/clavulanic acid (AMC), cephalothin (CF), cefozolin (CZ), cefoxitin (FOX), cefotaxime (CTX), cefepime (FEP), imipenem (IPM), streptomycin (S), gentamicin (GM), amikacin (AN), ciprofloxacin (CIP), enrofloxacin (ENO), norfloxacin (NOR), trimethoprim/sulfamethoxazole (SXT), erythromycin (E), chloramphenicol (C) and tetracycline (TE). Higher resistance rates (≥50%) were observed against 9 antimicrobial agents including AM, CF, S, CIP, ENO, NOR, SXT, E and TE. Resistance was most frequent for TE in 105 E. coli isolates (96.3%). Twenty-two isolates (20.2%) of the isolates showed multiple antimicrobial resistance to 8, and 19 isolates (17.4%) showed to 7 antimicrobial agents. The distribution of the resistance gene determinants for S and TE was assessed by PCR in resistant isolates. Thirty isolates possessed the strA, strB, and aadA gene, 25 isolates possessed the strA and strB gene among the 66 streptomycin-resistant isolates. Fifty one isolates possessed only the tetA gene, 22 isolates possessed the tetA and tetB gene, 11 isolates possessed only the tetB gene among the tetracycline-resistant isolates.