caa a22 4500 397570694 CHVBK 20180308164840.0 cr unu---uuuuu 161202e19961201xx s 000 0 eng 10.1093/ee/25.6.1360 doi (NATIONALLICENCE)oxford-10.1093/ee/25.6.1360 Intraplant and Interplant Movement of Bemisia argentifolii (Homoptera: Aleyrodidae) Crawlers [Elektronische Daten] [Charles G. Summers, Albert S. Newton, Debbie Estrada] Whitefly crawlers are thought to move only a few millimeters after eclosing from the egg before settling to feed. In the field, however, we observed that crawlers of Bemisia argentifolii Bellows & Perring appeared to move from senescent leaves on which they hatched to new leaves higher up on the plant. Laboratory studies were conducted to determine if crawlers were capable of moving upward to leaves higher up on the plant (intraplant movement), or laterally between plants (interplant movement). B. argentifolii crawlers readily moved along the stem of 4 test plants and settled on leaves 2:50 mm from their initial point of origin on the stems. Crawlers traveled an average distance of 73.5 ± 2.0,69.9 ± 3.5,64.3 ± 2.2 and 55.0 ± 0.9 mm on broccoli, Brassica oleracea variety botrytis L.; annual sowthistle, Sonchus oleraceus L.; prickly lettuce, Lactuca serriola L.; and cheeseweed, Malva parvifolia L., respectively, to find a suitable leaf on which to settle. The maximum distance traveled by a single individual from the point of origin to settling on a leaf was 204 mm on annual sowthistle. Eighty to 100% of the crawlers successfully reaching a leaf settled on the abaxial surface; the remainder settled on the adaxial surface. Between 7 and 12% of the crawlers successfully moved between the test plants, migrating from a senescent leaf of 1 plant (source leaf) to a healthy leaf (destination leaf) of a 2nd plant. Crawler movement may be important in whitefly overwintering because emerging crawlers can move from senescent leaves, which would not support development to the adult stage, to healthy leaves on either the same or adjacent plants where they can complete their development. © 1996 Entomological Society of America Population Ecology nationallicence Bemisia argentifolii nationallicence crawlers nationallicence movement nationallicence dispersal nationallicence Summers Charles G. Department of Entomology, University of California, Davis, CA 95616 aut Newton Albert S. Department of Entomology, University of California, Davis, CA 95616 aut Estrada Debbie Department of Entomology, University of California, Davis, CA 95616 aut Environmental Entomology Oxford University Press 25/6(1996-12-01), 1360-1364 0046-225X 25:6<1360 1996 25 ee https://doi.org/10.1093/ee/25.6.1360 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.6.1360 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Summers Charles G. Department of Entomology, University of California, Davis, CA 95616 aut NATIONALLICENCE 700 1- Newton Albert S. Department of Entomology, University of California, Davis, CA 95616 aut NATIONALLICENCE 700 1- Estrada Debbie Department of Entomology, University of California, Davis, CA 95616 aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/6(1996-12-01), 1360-1364 0046-225X 25:6<1360 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