Citation
Abdul Ghani Ibrahim, . The biology and natural control of the scale Drepanococcus chiton (Green)(Homoptera: Coccidae) a minor pest of carambola in Malaysia. pp. 209-212. ISSN 0126-6128
Abstract
The scale Drepanococcus chiton (Green) (Homoptera: Coccidae) is a potential pest of carambola variety B10 Averrhoa carambola. The insects caused drying of shoots and flower stalks. The regimental spraying of insecticides against the fruit flies Bactrocera dorsalis possibly gave rise to a build-up of scale populations in a carambola orchard at Sungai Long Ulu Langat Selangor. The development of eggs to adult maturity at 28 (plus minus) 1.5 degree C was 49.9 (plus minus) 1.06 days. A female scale could produce an average of 1081.9 (plus minus) 256.0 eggs with 97.9 viability. However only 2.5 of these eggs are being parasitised by an egg-parasitoid Eunotus sp. (Hymenoptera: Pteromalidae). The average monthly parasitisation by Eunotus sp. from August 1992 to February 1993 was 40.6. The parasitic larva was capable of destroying 93.2 of the scale's eggs during its larval development. The sex ratio of male to female parasitoid was 1 : 1
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Abstract
The scale Drepanococcus chiton (Green) (Homoptera: Coccidae) is a potential pest of carambola variety B10 Averrhoa carambola. The insects caused drying of shoots and flower stalks. The regimental spraying of insecticides against the fruit flies Bactrocera dorsalis possibly gave rise to a build-up of scale populations in a carambola orchard at Sungai Long Ulu Langat Selangor. The development of eggs to adult maturity at 28 (plus minus) 1.5 degree C was 49.9 (plus minus) 1.06 days. A female scale could produce an average of 1081.9 (plus minus) 256.0 eggs with 97.9 viability. However only 2.5 of these eggs are being parasitised by an egg-parasitoid Eunotus sp. (Hymenoptera: Pteromalidae). The average monthly parasitisation by Eunotus sp. from August 1992 to February 1993 was 40.6. The parasitic larva was capable of destroying 93.2 of the scale's eggs during its larval development. The sex ratio of male to female parasitoid was 1 : 1
Additional Metadata
| Item Type: | Article |
|---|---|
| Additional Information: | Summary (En Ms) |
| AGROVOC Term: | AVERRHOA CARAMBOLA |
| AGROVOC Term: | DESARROLLO BIOLOGICO |
| AGROVOC Term: | ETAPAS DE DESARROLLO |
| AGROVOC Term: | COCCIDAE |
| AGROVOC Term: | PLAGAS DE PLANTAS |
| AGROVOC Term: | PARASITISMO |
| AGROVOC Term: | PTEROMALIDAE |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:57 |
| URI: | http://webagris.upm.edu.my/id/eprint/20981 |
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