Asymmetric consequences of host plant occupation on the competition between the whiteflies Bemisia tabaci cryptic species MEAM1 and Trialeurodes vaporariorum (Hemiptera: Aleyrodidae). Issue 12 (26th February 2014)

• Record Type: Journal Article
• Authors: Zhang, Gui‐Fen; Lövei, Gábor L; Hu, Man; Wan, Fang‐Hao
• Is Part Of: Pest management science. Volume 70:Issue 12(2014:Dec.)
• Page Start: 1797
• Page End: 1807
• Publication Date: 2014-02-26
• Subjects: Pests -- Control -- Periodicals; Pesticides -- Periodicals; 632.9
• DOI: 10.1002/ps.3713
• Languages: English
• ISSNs: 1526-498X

Abstract

<abstract abstract-type="main" id="ps3713-abs-0001"> <title>Abstract</title> <sec id="ps3713-sec-0001" sec-type="section"> <title>BACKGROUND</title> <p id="ps3713-para-0001">The two common whitefly species, <italic>Bemisia tabaci</italic> (Gennadius) MEAM1 and <italic>Trialeurodes vaporariorum</italic> (Westwood), often co‐occur on their host plants. The effect of host plant occupation by one species on later‐arriving conspecific individuals or on the other competing species was examined.</p> </sec> <sec id="ps3713-sec-0002" sec-type="section"> <title>RESULTS</title> <p id="ps3713-para-0002">Resource preoccupied by <italic>T. vaporariorum</italic> had mostly negative effects on the life history parameters of later‐arriving conspecifics. Red‐eyed nymph and immature survival of <italic>T. vaporariorum</italic> decreased when resource was preoccupied by conspecifics, irrespective of the previous occupation scenario. However, resource preoccupied by <italic>T. vaporariorum</italic> had only minor detrimental effects on the performance of later‐arriving <italic>B. tabaci</italic> MEAM1. In the opposite colonisation sequence, previous occupation by <italic>B. tabaci</italic> MEAM1 had no significant effects on the life history parameters of later‐arriving conspecifics, but severe detrimental effects were observed on the performance of later‐arriving <italic>T. vaporariorum</italic>. Total immature survival of <italic>T. vaporariorum</italic> decreased in both weak and strong previous occupation situations by <italic>B. tabaci</italic> MEAM1.</p> </sec> <sec id="ps3713-sec-0003" sec-type="section"> <title>CONCLUSION</title> <p id="ps3713-para-0003">The interspecific interactions between <italic>B. tabaci</italic> MEAM1 and <italic>T. vaporariorum</italic> were asymmetric, with <italic>B. tabaci</italic> MEAM1 being the superior competitor. This superiority could partially explain the rapid spread of <italic>B. tabaci</italic> MEAM1 in China. © 2013 Society of Chemical Industry</p> </sec> </abstract>