caa a22 4500 397572123 CHVBK 20180308164844.0 cr unu---uuuuu 161202e19960801xx s 000 0 eng 10.1093/ee/25.4.776 doi (NATIONALLICENCE)oxford-10.1093/ee/25.4.776 Diurnal Field Patterns of Honeydew Sugar Secretion by Bemisia argentifolii (Homoptera: Aleyrodidae) Nymphs on Cotton [Elektronische Daten] [Wee L. Yee, Donald L. Hendrix, Nick C. Toscano, Chang Chi Chu, Thomas J. Henneberry] Honeydew secretion by nymphal field populations of silverleaf whitefly, Bemisia argentifolii Bellows & Perring, on cotton was documented during 10-, 14-, or 24-h periods in the Imperial Valley, California. Honeydew drops were collected on water-sensitive paper by placing 5th main stem node leaves inside open-ended plastic bags with strips of paper. Honeydew drops were also collected directly on open-ended plastic bags placed on leaves, and honeydew sugars were analyzed using gradient anion-exchange high performance liquid chromatography. No consistent diurnal patterns of honeydew drop secretion emerged, but on 1 of the 4 d drop numbers were higher in the morning (0500-1100 hours) than in the afternoon and evening (1500-1900 hours), and drops were collected throughout one 24-h period. On 3 of the 4 d, higher quantities of honeydew sugars were collected in the morning (0500 hours) than in the evening (1500-1900 hours). Quantities and percentages of honeydew sugars ranked as follows: trehalulose > melezitose > sucrose > fructose > glucose. This ranking, with minor exceptions, did not change during the day (0500-1900 hours). Trehalulose accounted for ≈30% of the total sugar mass in the honeydew. Honeydew sugar secretion and composition did not show a clear or consistent relationship with either leaf water potentials or temperatures. © 1996 Entomological Society of America Population Ecology nationallicence Bemisia argentifolii nationallicence honeydew sugar nationallicence diurnal patterns nationallicence Yee Wee L. Department of Entomology, University of California, Riverside, CA 9252l aut Hendrix Donald L. Western Cotton Research Laboratory, USDA-ARS, Phoenix, AZ 85040 aut Toscano Nick C. Department of Entomology, University of California, Riverside, CA 9252l aut Chu Chang Chi Western Cotton Research Laboratory, USDA-ARS, Brawley, CA 92227 aut Henneberry Thomas J. Western Cotton Research Laboratory, USDA-ARS, Phoenix, AZ 85040 aut Environmental Entomology Oxford University Press 25/4(1996-08-01), 776-782 0046-225X 25:4<776 1996 25 ee https://doi.org/10.1093/ee/25.4.776 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.4.776 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yee Wee L. Department of Entomology, University of California, Riverside, CA 9252l aut NATIONALLICENCE 700 1- Hendrix Donald L. Western Cotton Research Laboratory, USDA-ARS, Phoenix, AZ 85040 aut NATIONALLICENCE 700 1- Toscano Nick C. Department of Entomology, University of California, Riverside, CA 9252l aut NATIONALLICENCE 700 1- Chu Chang Chi Western Cotton Research Laboratory, USDA-ARS, Brawley, CA 92227 aut NATIONALLICENCE 700 1- Henneberry Thomas J. Western Cotton Research Laboratory, USDA-ARS, Phoenix, AZ 85040 aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/4(1996-08-01), 776-782 0046-225X 25:4<776 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford