Tock, Hing Chua and BH Lim (1979) Distribution pattern of diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) on choy-sum plants. Zeitschrift Für Angewandte Entomologie, 88. pp. 170-175. ISSN 0931-2048 (P-ISSN) , 1439-0418 (E-ISSN)
![[img]](https://eprints.ums.edu.my/style/images/fileicons/text.png) |
Text
Distribution pattern of diamondback moth, Plutella xylostella .ABSTRACT.pdf Download (89kB) |
Abstract
The distribution of all life-stages of Plutella xylostella (L.) on Choy-sum plants (Brassica rapa var. Spinach mustard) was investigated. The adults had a random distribution (P > 0.05), while the immature stages had a negative binomial (aggregated) distribution (P > 0.05). The adults and eggs were found mainly on the upper surface (P < 0.001) while the larvae (except the first instar) and pupae on the lower leaf surface (P < 0.001). The first instars were usually in the mines of leaves hollowed out by their feeding activities. The adults (P < 0.05), eggs (P < 0.001) and larvae (P < 0.05) were recorded mainly on the fully-opened leaves of intermediate age while the pupae (P < 0.01) on the oldest (also lowest) leaves. The larvae after hatching from eggs tended to clump together although they later dispersed as they grow, only to aggregate again during pupation.
| Item Type: | Article |
|---|---|
| Keyword: | Plutella xylostella , Choy-sum plants |
| Subjects: | Q Science > QL Zoology > QL1-991 Zoology > QL360-599.82 Invertebrates > QL461-599.82 Insects |
| Department: | FACULTY > Faculty of Medicine and Health Sciences |
| Depositing User: | DG MASNIAH AHMAD - |
| Date Deposited: | 08 Sep 2022 11:09 |
| Last Modified: | 08 Sep 2022 11:09 |
| URI: | https://eprints.ums.edu.my/id/eprint/34078 |
Actions (login required)
 |
View Item |