Seasonal abundance and development of the Asian longhorned beetle and natural enemy prevalence in different forest types in China

Publication date: December 2016 Source:Biological Control, Volume 103 Author(s): Houping Liu, Leah S. Bauer, Tonghai Zhao, Ruitong Gao, Therese M. Poland Seasonal abundance and population development of the Asian longhorned beetle (ALB), Anoplophora glabripennis (Motschulsky) (Coleoptera: Cerambycidae), and prevalence of its natural enemies were studied on Hankow willow (Salix matsudana Koidz.) at an urban forest site (Anci) and a rural forest site (Tangerli) in Hebei province in northern China from June to October, 2002. Overall, ALB abundance was significantly lower in the urban forest in Anci than in the rural forest in Tangerli. Population density ranged from 0 to 1.0 pupae/branch, 0.1 to 0.7 adults/tree, 0.1 to 9.2 eggs/branch, and 5.9 to 18.4 larvae/branch at Anci, and 0.1 to 0.9 pupae/branch, 0.1 to 1.6 adults/tree, 0 to 22.9 eggs/branch, and 5.0 to 34.1 larvae/branch at Tangerli, respectively. A significant effect of sampling date was observed for all ALB life stages. Significantly fewer 3rd and 4th size class larvae were found in the urban forest at Anci compared to the rural forest at Tangerli. Prevalence of the gregarious larval-pupal ectoparasitoid Dastarcus helophoroides (Fairmaire) (= D. longulus) (Coleoptera: Bothrideridae) did not differ between Anci and Tangerli, but percent parasitism differed among sampling dates and peaked in June at 32.8±7.4% at Anci and 12.0±3.5% at Tangerli. Parasitism was lowest in August in Tangerli and September in Anci when...

Source: Biological Control - September 15, 2016 Category: Biology Source Type: research