EFFICACY OF BACILLUS-SPHAERICUS 2362 AGAINST LARVAE OF ANOPHELES-GAMBIAE UNDER LABORATORY AND FIELD CONDITIONS IN WEST-AFRICA
EFFICACY OF BACILLUS-SPHAERICUS 2362 AGAINST LARVAE OF ANOPHELES-GAMBIAE UNDER LABORATORY AND FIELD CONDITIONS IN WEST-AFRICA
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DOI：
10.1111/j.1365-2915.1987.tb00337.x
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发表时间：
1987-04-01
影响因子：
1.9
通讯作者：
HOUGARD, JM
中科院分区：
文献类型：
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作者：
NICOLAS, L;DARRIET, F;HOUGARD, JM
在布基纳法索博博迪乌拉索地区的小小区田间试验中，将球形芽孢杆菌（Neide）菌株2362的可流动浓缩物用于对抗冈比亚按蚊Giless.l.蚊幼虫。10 g/m2剂量防治3 ~ 4龄幼虫10-15 d，1或0.1 mg/m2剂量防治3-10 d，0.01 g/m2剂量防治2 d，幼虫取食区需1 × 10 ~ 2 ~ 2 × 103活孢子/ml才能完全消灭幼虫。由于孢子被非靶生物和靶生物摄入和/或由于阳光使某些孢子丧失活力。在实验室生物测定和现场条件下，该制剂对冈比亚按蚊和致倦库蚊幼虫的有效性均较低。
A flowable concentrate ofBacillus sphaericus(Neide) strain 2362 was applied againstAnopheles gambiaeGiless.l.mosquito larve in small plot field trials in Bobo‐Dioulasso area, Burkina‐Faso. Third and fourth instar larvae were controlled for 10–15 days with a dosage of 10 g/m2, 3–10 days with 1 or 0.1 mg/m2, and 2 days with 0.01 g/m2.Complete elimination of larval populations required lx102to 2times103viable spores/ml in the larval feeding zone.After treatment, the total numbers of viable spores decreased in the ponds, due to ingestion of spores by non‐target as well as target organisms and/or to loss of viability of some spores by sunlight. This formulation was less effective againstAn.gambiaehan againstCulex quinquefasciatusSay larvae, both in laboratory bioassays and under field conditions.