Potential adaptation of a Q biotype whitefly population from poinsettia to field crops

Xiangshun Hu, Timothy J. Dennehy, Xinzhi Ni, Huiyan Zhao, Robert L. Nichols, Xianchun Li

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The invasive Q biotype whitefly was first detected in the US on poinsettia in 2004 and is still not a pest outside of greenhouse environments in the US. To assess the potential for the establishment of the Q biotype on field crops, population cage experiments were conducted to compare the performance of a poinsettia-derived Q population named P'06 on poinsettia and six field crops (alfalfa, tomato, melon, cotton, cowpea and cabbage). P'06 adults reared on poinsettia as nymphs laid eggs on all six field crops. Significantly more eggs were laid on alfalfa, tomato, melon and cotton than on cabbage, cowpea and poinsettia. These eggs hatched and the nymphs developed to adults on the six field crops. Relative to poinsettia, whitefly survival was similar on cowpea, alfalfa, tomato and cabbage, but significantly higher on cotton and melon. Moreover, P'06 had significantly shorter development times from egg to adult on cotton, melon, cowpea, tomato and alfalfa than they did on poinsettia. However, the F1 adults raised on the six field crops had significantly shorter lifespans and laid 11- to 18-fold fewer eggs than did the F1 adults raised on poinsettia. Taken together, while P'06 may have some potential to establish on field crops, the shorter lifespans and extremely low fecundities of the F1 adults raised on the six field crops suggests that P'06 is incapable of rapidly adapting to them. Poor adaptation to field crops may explain, at least partially, why the Q biotype has not established in the US field system.

Original languageEnglish (US)
Pages (from-to)719-728
Number of pages10
JournalInsect Science
Volume18
Issue number6
DOIs
StatePublished - Dec 2011

Fingerprint

Cucurbitaceae
Euphorbia pulcherrima
whitefly
Hemiptera
biotype
Medicago sativa
Lycopersicon esculentum
field crops
Aleyrodidae
biotypes
Eggs
Crops
Brassica
Nymph
crop
melons
alfalfa
cowpeas
Population
Cotton

Keywords

  • Bemisia tabaci
  • Host adaptation
  • Life history traits
  • Population establishment
  • Q-biotype

ASJC Scopus subject areas

  • Insect Science
  • Ecology, Evolution, Behavior and Systematics
  • Agronomy and Crop Science
  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Potential adaptation of a Q biotype whitefly population from poinsettia to field crops. / Hu, Xiangshun; Dennehy, Timothy J.; Ni, Xinzhi; Zhao, Huiyan; Nichols, Robert L.; Li, Xianchun.

In: Insect Science, Vol. 18, No. 6, 12.2011, p. 719-728.

Research output: Contribution to journalArticle

Hu, Xiangshun ; Dennehy, Timothy J. ; Ni, Xinzhi ; Zhao, Huiyan ; Nichols, Robert L. ; Li, Xianchun. / Potential adaptation of a Q biotype whitefly population from poinsettia to field crops. In: Insect Science. 2011 ; Vol. 18, No. 6. pp. 719-728.
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