Entomologia Sinica (2003) 10, 121-129

Chang-Chi Chu, James S. Buckner, Kamil Karut, Thomas P. Freeman, Dennis R. Nelson and Thomas J. Hennebeny (2003)
A survey of sizes and weights of Bemisia tabaci (Homoptera:Aleyrodidae) B Biotype life stages from field grown cotton and cantaloupes
Entomologia Sinica 10 (2), 121-129
Abstract: Size and weight measurements were made for all the life stages of Bemisia tabaci (Gennadius) B biotype from field grown cotton (Gossypium hirsutum L.) and cantaloupe (Cucumis melo L., var. cantalupensis) in Phoenix, AZ and Fargo, ND, USA in 2000 and 2001. Nymphal volumes were derived from the measurements. The average nymphal volume increase for settled 1st to the late 4th instar was exponential. The greatest increase in body volume occurred during development from the 3rd to early 4th instar. Nymphs on cotton leaves were wider, but not longer compared with those on cantaloupe. Ventral and dorsal depth ratios of nymphal bodies from 1st to late 4th instars from cantaloupe leaves were significantly greater compared with those from cotton leaves. During nymphal development from 1st to 4th instar, the average (from the two host species) ventral body half volume increased by nearly 51 times compared with an increase of 28 times for the dorsal body half volume. Adult female and male average lengths, from heads to wing tips, were 1126 µm and 953 µm, respectively. Average adult female and male weights were 39 and 17 µg, respectively. Average widths, lengths, and weights of eggs from cotton and cantaloupe were, 99 µm, 197 µm, and 0.8 µg, respectively. Average widths, lengths, and weights for exuviae of non-parasitized nymphs from both cotton and cantaloupe were 492 µm, 673 µm, and 1.20 µg, respectively; and widths, lengths, and weights of parasitized nymph exuviae were 452 µm, 665 µm, and 3.62 µg, respectively. Both exuviae from non-parasitized and parasitized nymphs from cotton leaves were wider, longer, and heavier than those from cantaloupe leaves.
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Link to article at publishers website
Database assignments for author(s): Chang Chi Chu, Kamil Karut

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Bemisia tabaci biotype MEAM1	Cotton (Gossypium)	U.S.A. (SW)
	Bemisia tabaci biotype MEAM1	Melon (Cucumis melo)	U.S.A. (mid N)