Host preference and nymph performance of B and Q putative species of Bemisia tabaci on three host plants

2012 ◽  
Vol 85 (4) ◽  
pp. 423-430 ◽  
Author(s):  
Xiaoguo Jiao ◽  
Wen Xie ◽  
Shaoli Wang ◽  
Qingjun Wu ◽  
Long Zhou ◽  
...  
2010 ◽  
Vol 63 ◽  
pp. 275-275
Author(s):  
A.J. Puketapu

The tomato/potato psyllid Bactericera cockerelli (Sulc) (Hemiptera Triozidae) is an introduced pest of solanaceous crops in New Zealand A range of established plants play host to Bactericera cockerelli including three traditional Maori food sources taewa or Maori potatoes (Solanum tuberosum ssp andigena) kumara (Ipomoea batatas) and poroporo (Solanum aviculare) Taewa and kumara are highly susceptible to summer B cockerelli infestation whilst poroporo an evergreen plant remains susceptible yearround and provides overwintering refuge Extensive monitoring of each host plant was carried out to determine the significance of each host in the lifecycle of B cockerelli in New Zealand Poroporo was monitored from late autumn for 6 months to determine if the plant served as a significant overwintering host for the pest after harvesting summer crops Taewa and kumara plants were monitored throughout the summer growing season on a weekly basis increasing to twice a week as populations proliferated Host plants were monitored both in the natural environment and under laboratory conditions Data collected contributed to tracking population development of B cockerelli on each host including the length of each life stage (ie egg nymph adult) Comparisons between the three hosts revealed host preference host suitability and the significance of each host in the lifecycle progression of B cockerelli


2015 ◽  
Vol 20 (1) ◽  
pp. 133-137 ◽  
Author(s):  
Mohan Sharma ◽  
Prem Bahadur Budha

The host preference of whitefly Bemisia tabaci was experimented in four economically important vegetable plants viz. tomato, brinjal, capsicum and cucumber in 2012-2013. It was found that preference of whitefly for feeding under both conditions free-choice and no-choice was significantly different after 24 hours, 48 hours, 72 hours and 96 hours. Cucumber was the most preferred host plant for oviposition while capsicum was the least.Journal of Institute of Science and Technology, 2015, 20(1): 133-137


2018 ◽  
Vol 80 (2) ◽  
pp. 257
Author(s):  
S.C. Kedar ◽  
R.K. Saini ◽  
K.M. Kumaranag
Keyword(s):  

2010 ◽  
Vol 100 (3) ◽  
pp. 359-366 ◽  
Author(s):  
J. Xu ◽  
P.J. De Barro ◽  
S.S. Liu

AbstractThe worldwide distribution and extensive genetic diversity of the whitefly Bemisia tabaci has long been recognized. However, whether B. tabaci is a complex species or a species complex has been a subject of debate. Recent phylogenetic analyses suggest that B. tabaci is a cryptic species complex composed of at least 24 morphologically indistinguishable species. Here, we conducted crossing experiments and demonstrated reproductive incompatibility among three of the 24 putative species. Our data and those of previously reported crossing experiments among various putative species of B. tabaci were collated to reveal the pattern of reproductive isolation. The combined results provide strong support to the proposition that B. tabaci is a cryptic species complex.


Nematology ◽  
2003 ◽  
Vol 5 (5) ◽  
pp. 713-720 ◽  
Author(s):  
Andrew Cuthbertson ◽  
Justine Head ◽  
Keith Walters ◽  
Alistair Murray

AbstractThe integration of infective juveniles of the entomopathogenic nematode, Steinernema feltiae, with chemical insecticides to control second instar stages of the sweetpotato whitefly, Bemisia tabaci, was investigated. The effects of direct exposure for 24 h to field rate dilutions of four insecticides (imidacloprid, buprofezin, teflubenzuron and nicotine) on nematode infectivity to Galleria mellonella larvae were tested in a sand tube bioassay. Teflubenzuron had the least adverse effect on the nematodes whilst imidacloprid, buprofezin and nicotine significantly reduced nematode infectivity. The impact of dry insecticide residue present on tomato and verbena foliage on nematode infectivity against B. tabaci larvae was investigated for buprofezin, teflubenzuron and nicotine (imidacloprid is a systemic pesticide and no residues would occur on foliage). No significant reduction on the level of control of B. tabaci was recorded when compared with the infectivity of nematodes applied to residue-free foliage of either tomato or verbena plants. Nematodes in combination with imidacloprid gave significantly higher B. tabaci larvae mortality compared to either treatment individually on both host plants. The integration of S. feltiae and these chemical agents into an integrated pest management programme for the control of B. tabaci is discussed.


2011 ◽  
Vol 11 (1) ◽  
pp. 47-56
Author(s):  
Hendrival Hendrival ◽  
Purnama Hidayat ◽  
Ali Nurmansyah

The study of host range and population dynamic of B. tabaci in red chili pepper fiel dswas conducted in Sub-district of Pakem, District of Sleman, Province of Daerah Istimewa Yogyakarta during dry season of May-October 2009. The study of host plants of B. tabaci from the red chili pepper fields revealed that there were 27 species of host plants belong to 22 genera of 13 families including crops and weeds. The host plants belong to families of Araceae, Amaranthaceae, Asteraceae, Brassicaceae, Capparidaceae, Convolvulaceae, Euphorbiaceae, Lamiaceae, Oxalidaceae, Papilionaceae, Rubiaceae, Solanaceae and Sterculiaceae. The host plant families of Asteraceae and Euphorbiaceae had the most abundant population of B. tabaci. Geminivirus-like symptoms were found in the weeds of A. conyzoides and A. boehmerioides. Population of B. tabaci adults correlated with abundance of host plant species found in the red chili pepper fields. The population of B. tabaci in red chili pepper fields was affected by natural enemy population. Population dynamic of the parasitoid Eretmocerus sp. correlated with population dynamic of the parasitized nymph of B. tabaci. Parasitoid Eretmocerus sp. was potentially good in controlling population of B. tabaci nymph in red chili pepper fields.


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