Distribution patterns of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) eggs, nymphs and adults in a Malaysian citrus orchard
Spatial distribution of eggs, nymphs and adults of Diaphorina citri (Hemiptera: Psyllidae) was studied in a commercial orchard in SW Sarawak, Malaysia, using mean–variance test, the index of dispersion, and the negative binomial distribution. To further ascertain and confirm the distribution pattern...
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| Format: | Article |
| Language: | English |
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Phytoparasitica.
2018
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| Online Access: | http://psasir.upm.edu.my/id/eprint/72318/ http://psasir.upm.edu.my/id/eprint/72318/1/Distribution%20patterns%20of%20Diaphorina%20citri%20Kuwayama%20.pdf |
| _version_ | 1848857089572601856 |
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| author | Leong, Sui Sien Leong, Stephen Chan Teck Abang, Fatimah Beattie, G. Andrew C. Kueh, Roland Jui Heng |
| author_facet | Leong, Sui Sien Leong, Stephen Chan Teck Abang, Fatimah Beattie, G. Andrew C. Kueh, Roland Jui Heng |
| author_sort | Leong, Sui Sien |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Spatial distribution of eggs, nymphs and adults of Diaphorina citri (Hemiptera: Psyllidae) was studied in a commercial orchard in SW Sarawak, Malaysia, using mean–variance test, the index of dispersion, and the negative binomial distribution. To further ascertain and confirm the distribution pattern in the population of the psyllid, dispersion indices (index of mean crowding, Lloyd’s index of patchiness, Taylor’s power law and Iwao’s patchiness regression) were calculated. Measurable tests showed that distribution of eggs and nymphs in naturally occurring psyllid populations was highly aggregated, resulting from initially aggregated migration of adults and a contagious dispersion of them on flushes as the population density increased of metals in the present study can be used as suitable reference for future studies. |
| first_indexed | 2025-11-15T11:52:00Z |
| format | Article |
| id | upm-72318 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:52:00Z |
| publishDate | 2018 |
| publisher | Phytoparasitica. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-723182020-05-04T07:00:09Z http://psasir.upm.edu.my/id/eprint/72318/ Distribution patterns of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) eggs, nymphs and adults in a Malaysian citrus orchard Leong, Sui Sien Leong, Stephen Chan Teck Abang, Fatimah Beattie, G. Andrew C. Kueh, Roland Jui Heng Spatial distribution of eggs, nymphs and adults of Diaphorina citri (Hemiptera: Psyllidae) was studied in a commercial orchard in SW Sarawak, Malaysia, using mean–variance test, the index of dispersion, and the negative binomial distribution. To further ascertain and confirm the distribution pattern in the population of the psyllid, dispersion indices (index of mean crowding, Lloyd’s index of patchiness, Taylor’s power law and Iwao’s patchiness regression) were calculated. Measurable tests showed that distribution of eggs and nymphs in naturally occurring psyllid populations was highly aggregated, resulting from initially aggregated migration of adults and a contagious dispersion of them on flushes as the population density increased of metals in the present study can be used as suitable reference for future studies. Phytoparasitica. 2018-06 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/72318/1/Distribution%20patterns%20of%20Diaphorina%20citri%20Kuwayama%20.pdf Leong, Sui Sien and Leong, Stephen Chan Teck and Abang, Fatimah and Beattie, G. Andrew C. and Kueh, Roland Jui Heng (2018) Distribution patterns of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) eggs, nymphs and adults in a Malaysian citrus orchard. Israel Journal of Entomology, 48 (1). 49 - 62. ISSN 2224-6304 http://www.entomology.org.il/publications-10/15 10.5281/zenodo.1298369 |
| spellingShingle | Leong, Sui Sien Leong, Stephen Chan Teck Abang, Fatimah Beattie, G. Andrew C. Kueh, Roland Jui Heng Distribution patterns of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) eggs, nymphs and adults in a Malaysian citrus orchard |
| title | Distribution patterns of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) eggs, nymphs and adults in a Malaysian citrus orchard |
| title_full | Distribution patterns of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) eggs, nymphs and adults in a Malaysian citrus orchard |
| title_fullStr | Distribution patterns of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) eggs, nymphs and adults in a Malaysian citrus orchard |
| title_full_unstemmed | Distribution patterns of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) eggs, nymphs and adults in a Malaysian citrus orchard |
| title_short | Distribution patterns of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) eggs, nymphs and adults in a Malaysian citrus orchard |
| title_sort | distribution patterns of diaphorina citri kuwayama (hemiptera: psyllidae) eggs, nymphs and adults in a malaysian citrus orchard |
| url | http://psasir.upm.edu.my/id/eprint/72318/ http://psasir.upm.edu.my/id/eprint/72318/ http://psasir.upm.edu.my/id/eprint/72318/ http://psasir.upm.edu.my/id/eprint/72318/1/Distribution%20patterns%20of%20Diaphorina%20citri%20Kuwayama%20.pdf |