Distribution patterns of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) eggs, nymphs and adults in a Malaysian citrus orchard

Authors

  • Sui Sien Leong Faculty of Agriculture and Food Sciences, Universiti Putra Malaysia, Campus Bintulu Sarawak, Nyabau Road, 97008 Bintulu, Sarawak, Malaysia. E-mail: leongsuisien@upm.edu.my
  • Stephen Chan Teck Leong Faculty of Agriculture and Food Sciences, Universiti Putra Malaysia, Campus Bintulu Sarawak, Nyabau Road, 97008 Bintulu, Sarawak, Malaysia
  • Fatimah Abang Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia
  • G. Andrew C. Beattie Centre for Plant and Food Science, University of Western Sydney, Locked Bag 1797, Penrith, New South Wales 2751, Australia https://orcid.org/0000-0002-4667-9704
  • Roland Jui Heng Kueh Faculty of Agriculture and Food Sciences, Universiti Putra Malaysia, Campus Bintulu Sarawak, Nyabau Road, 97008 Bintulu, Sarawak, Malaysia

Abstract

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.

 

Cite as: Leong, S.S., Leong, S.Ch.Te., Abang, F., Beattie, G.A.C. & Kueh, R.J.H. 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.

DOI: 10.5281/zenodo.1298369

urn:lsid:zoobank.org:pub:1663B320-F264-4FF-8B05-A023FCA370D7

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Published

2021-05-05

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