caa a22 4500 388092904 CHVBK 20180307125256.0 cr unu---uuuuu 161130e199902 xx s 000 0 eng 10.4039/Ent131107-1 doi S0008347X00009731 pii (NATIONALLICENCE)cambridge-10.4039/Ent131107-1 SPRUCE BEETLE (COLEOPTERA: SCOLYTIDAE) SURVIVAL IN STUMPS AND WINDFALL [Elektronische Daten] Survival of the spruce beetle, Dendroctonus rufipennis Kirby, from egg to adult, proportion of 1- and 2-year-cycle adults, and egg and egg gallery production per attack were investigated over five generations in stumps and windfall in central British Columbia. Densities of attacks, egg gallery lengths, and brood in various stages of development were obtained by repeated sampling throughout the life cycle. Spruce beetle populations remained at suboutbreak levels throughout the duration of the study. There were generally no differences by area, host type, or infestation year in any of the measured variables. The mean numbers (±SD) of eggs per attack and eggs per centimetre of egg gallery were 80.8 (54.3) and 5.4 (4.6), respectively. Brood survival from egg to adult averaged 6.8%. The lowest and highest survival from egg to adult occurred in the same years as when the lowest and highest percentage of 1-year-cycle adults were produced, respectively. On average, 51.8% of the beetles in stumps and 19.1% of beetles in windfall developed on a 1-year cycle. Copyright © Entomological Society of Canada 1999 Safranyik L. Canadian Forest Service, Natural Resources Canada, 506 W. Burnside Road,Victoria, British Columbia, Canada V8Z 1M5 Linton D.A. Canadian Forest Service, Natural Resources Canada, 506 W. Burnside Road,Victoria, British Columbia, Canada V8Z 1M5 The Canadian Entomologist Cambridge University Press 131/1(1999-02), 107-113 0008-347X 131:1<107 1999 131 TCE https://doi.org/10.4039/Ent131107-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent131107-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Safranyik L. Canadian Forest Service, Natural Resources Canada, 506 W. Burnside Road,Victoria, British Columbia, Canada V8Z 1M5 NATIONALLICENCE 700 1- Linton D.A. Canadian Forest Service, Natural Resources Canada, 506 W. Burnside Road,Victoria, British Columbia, Canada V8Z 1M5 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 131/1(1999-02), 107-113 0008-347X 131:1<107 1999 131 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge