caa a22 4500 388092807 CHVBK 20180307125256.0 cr unu---uuuuu 161130e199908 xx s 000 0 eng 10.4039/Ent131521-4 doi S0008347X00010130 pii (NATIONALLICENCE)cambridge-10.4039/Ent131521-4 GROUND AND AERIAL MOVEMENT OF ADULT COLORADO POTATO BEETLE (COLEOPTERA: CHRYSOMELIDAE) IN A UNIVOLTINE POPULATION [Elektronische Daten] Pitfall and screen traps were used around potato Solanum tuberosum L. (Solanaceae) plots to detect directional patterns of prediapause (two seasons) and postdiapause (one season) movement in a univoltine population of the Colorado potato beetle, Leptinotarsa decemlineata (Say), from Quebec. Prediapause beetles were sampled for diapause readiness using a feeding-digging test. In 1994, a plot left unprotected from the beetle (moderately defoliated) was monitored. In 1995, movement around a plot left unprotected from the beetle (severely defoliated) was compared to that from a plot protected (only lightly defoliated) by inundative release of the potato beetle predator Perillus bioculatus Say (Hemiptera: Pentatomidae). Movement frequency by postdiapause beetles in spring 1995 was low compared with 1994 prediapause movement, especially on the ground. Low-frequency flying persisted over several weeks of postdiapause beetle oviposition, with only a brief period of directionality. Flight movement by satiated prediapause beetles in August 1994 and 1995 was strongly directional, being oriented toward the closest forest border east of the plots, where sampling confirmed overwintering. In both years, satiated prediapause beetles also emigrated by walking, but mostly from densely populated and defoliated plots. Newly emerged (unsatiated) prediapause beetles emigrated en masse from severely defoliated plants, and did so exclusively by walking. Directional walking contrasted with directional flying in being predominantly oriented south-westward to northwestward, suggesting cueing on the sun position during warm hours of the day. Copyright © Entomological Society of Canada 1999 Noronha Christine Département de biologie, Centre de Recherche en Horticulture, Université Laval, Cité Universitaire, Québec, Quebec Canada G1K 7P4 Cloutier Conrad Département de biologie, Centre de Recherche en Horticulture, Université Laval, Cité Universitaire, Québec, Quebec Canada G1K 7P4 The Canadian Entomologist Cambridge University Press 131/4(1999-08), 521-538 0008-347X 131:4<521 1999 131 TCE https://doi.org/10.4039/Ent131521-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent131521-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Noronha Christine Département de biologie, Centre de Recherche en Horticulture, Université Laval, Cité Universitaire, Québec, Quebec Canada G1K 7P4 NATIONALLICENCE 700 1- Cloutier Conrad Département de biologie, Centre de Recherche en Horticulture, Université Laval, Cité Universitaire, Québec, Quebec Canada G1K 7P4 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 131/4(1999-08), 521-538 0008-347X 131:4<521 1999 131 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge