CAJ | 학술논문

许多粉虱寄生蜂雌蜂对粉虱若虫的攻击方式不仅是寄生，而且还能取食。本文以海氏桨角蚜小蜂Eretmocerus hayati作为测试寄生蜂，Q隐种烟粉虱和温室白粉虱作为寄主，在非选择和双向选择条件下调查了寄生蜂对寄主的取食和寄生选择性。研究结果表明，非选择试验条件下，海氏桨角蚜小蜂48 h内取食1～4龄烟粉虱和温室白粉虱若虫的数量分别为10.7、6.4、6.7、5.0头和4.4、3.7、2.8、2.3头，寄生1～4龄烟粉虱若虫的数量分别为22.1、27.5、25.4、16.5头，但不能寄生各龄期温室白粉虱若虫；而在选择试验条件下，寄生蜂取食1～4龄烟粉虱若虫的数量分别为同龄期温室白粉虱若虫数量的1.8、2.6、2.5、1.5倍。说明寄生蜂的取食寄主能力明显受寄主种类和龄期的影响。海氏桨角蚜小蜂更适合用来防治烟粉虱，但不适于防治温室白粉虱。
허다분슬기생봉자봉대분슬약충적공격방식불부시기생，이차환능취식。본문이해씨장각아소봉Eretmocerus hayati작위측시기생봉，Q은충연분슬화온실백분슬작위기주，재비선택화쌍향선택조건하조사료기생봉대기주적취식화기생선택성。연구결과표명，비선택시험조건하，해씨장각아소봉48 h내취식1～4령연분슬화온실백분슬약충적수량분별위10.7、6.4、6.7、5.0두화4.4、3.7、2.8、2.3두，기생1～4령연분슬약충적수량분별위22.1、27.5、25.4、16.5두，단불능기생각령기온실백분슬약충；이재선택시험조건하，기생봉취식1～4령연분슬약충적수량분별위동령기온실백분슬약충수량적1.8、2.6、2.5、1.5배。설명기생봉적취식기주능력명현수기주충류화령기적영향。해씨장각아소봉경괄합용래방치연분슬，단불괄우방치온실백분슬。
Many species of parasitoids not only parasitize whitefly hosts but can also feed them. Host feeding and parasitism preference in Eretmocerus hayati for nymphs of Bemisia tabaci Q biotype and Trialeurodes vaporariorum was studied under no-choice and paired-choice conditions. In no-choice test, the number of 1st to 4th instar nymphs of B. tabaci predated by a female E. hayati in 48 h was 10.7, 6.4, 6.7, and 5.0, respectively, and the number of 1st to 4th instar nymphs parasitized was 22.1, 27.5, 25.4, and 16.5, respectively. In contrast, the number of 1st to 4th instar nymphs of T. vaporariorum fed by a female E. hayati in 48 h was 4.4, 3.7, 2.8, and 2.3, respectively, and no nymphs was parasitized. In paired-choice test with the same stage nymphs of B. tabaci and T. vaporariorum, the number of 1st to 4th nymphs of B. tabaci fed by E. hayati was 1.8, 2.6, 2.5, and 1.5 folds more than those of T. vaporariorum, respectively. These results indicate that whitefly host species and host stage affect host feeding and parasitism capacity of parasitoids. E. hayati has the potential to be used as a bio-control agent for control of the invasive whitefly B. tabaci, but not for the indigenous whitefly T. vaparariorum.