Distribution pattern of diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) on choy-sum plants

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...

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Main Authors: Tock, Hing Chua, BH Lim
Format: Article
Language:English
Published: Blackwell Publishing Ltd 1979
Subjects:
Online Access:https://eprints.ums.edu.my/id/eprint/34078/1/Distribution%20pattern%20of%20diamondback%20moth%2C%20Plutella%20xylostella%20.ABSTRACT.pdf
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author Tock, Hing Chua
BH Lim
author_facet Tock, Hing Chua
BH Lim
author_sort Tock, Hing Chua
collection UMS
description 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.
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spelling ums.eprints-340782022-09-08T03:09:28Z https://eprints.ums.edu.my/id/eprint/34078/ Distribution pattern of diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) on choy-sum plants Tock, Hing Chua BH Lim QL461-599.82 Insects 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. Blackwell Publishing Ltd 1979 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/34078/1/Distribution%20pattern%20of%20diamondback%20moth%2C%20Plutella%20xylostella%20.ABSTRACT.pdf 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) https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1439-0418.1979.tb02492.x https://doi.org/10.1111/j.1439-0418.1979.tb02492.x https://doi.org/10.1111/j.1439-0418.1979.tb02492.x
spellingShingle QL461-599.82 Insects
Tock, Hing Chua
BH Lim
Distribution pattern of diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) on choy-sum plants
title Distribution pattern of diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) on choy-sum plants
title_full Distribution pattern of diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) on choy-sum plants
title_fullStr Distribution pattern of diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) on choy-sum plants
title_full_unstemmed Distribution pattern of diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) on choy-sum plants
title_short Distribution pattern of diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) on choy-sum plants
title_sort distribution pattern of diamondback moth plutella xylostella l lepidoptera plutellidae on choy sum plants
topic QL461-599.82 Insects
url https://eprints.ums.edu.my/id/eprint/34078/1/Distribution%20pattern%20of%20diamondback%20moth%2C%20Plutella%20xylostella%20.ABSTRACT.pdf
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