caa a22 4500 386361851 CHVBK 20180307111918.0 cr unu---uuuuu 161130e198902 xx s 000 0 eng 10.4039/Ent121149-2 doi S0008347X00028595 pii (NATIONALLICENCE)cambridge-10.4039/Ent121149-2 Langor David W. Department of Entomology, University of Alberta, Edmonton, Alberta, Canada T6G 2E3 HOST EFFECTS ON THE PHENOLOGY, DEVELOPMENT, AND MORTALITY OF FIELD POPULATIONS OF THE MOUNTAIN PINE BEETLE, DENDROCTONUS PONDEROSAE HOPKINS (COLEOPTERA: SCOLYTIDAE) [Elektronische Daten] [David W. Langor] Phenology, fecundity, development, and mortality were studied for co-occurring, declining populations of Dendroctonus ponderosae Hopkins in limber pine and lodgepole pine at two sites in the Porcupine Hills of southwestern Alberta in 1985-1986. Beetles reared in lodgepole pine emerged and attacked new hosts 7-8 days earlier than those in limber pine in 1985. Beetles were able to utilize over two-thirds of the length of each limber pine bole but only about one-third of the length of each lodgepole pine bole. Also, beetles infesting limber pine had significantly higher fecundity, produced more eggs per centimetre of gallery length, and their progeny developed faster and survived better than beetles infesting lodgepole pine. There was no apparent phenological or other barrier that might inhibit gene flow between D. ponderosae populations in limber pine and lodgepole pine. In the area studied, limber pine was a better host for D. ponderosae reproduction, development, and survival than was lodgepole pine. Thus, beetle populations may be able to increase much more quickly in limber pine, arguing for regular monitoring of these populations. Copyright © Entomological Society of Canada 1989 The Canadian Entomologist Cambridge University Press 121/2(1989-02), 149-157 0008-347X 121:2<149 1989 121 TCE https://doi.org/10.4039/Ent121149-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent121149-2 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Langor David W. Department of Entomology, University of Alberta, Edmonton, Alberta, Canada T6G 2E3 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 121/2(1989-02), 149-157 0008-347X 121:2<149 1989 121 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge