Period of adult activity and response to wood moisture content as major segregating factors in the coexistence of two conifer longhorn beetles, Callidiellum rufipenne and Semanotus bifasciatus (Coleoptera: Cerambycidae)

Title:

Period of adult activity and response to wood moisture content as major segregating factors in the coexistence of two conifer longhorn beetles, Callidiellum rufipenne and Semanotus bifasciatus (Coleoptera: Cerambycidae)

Creator:

Iwata, Ryûtarô, Maro, Takahisa, Yonezawa, Yasushi, Yahagi, Tôru, and Fujikawa, Yoshirô

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:7097b4cb-eb8e-40fa-88d9-9229427263a6
uuid:7097b4cb-eb8e-40fa-88d9-9229427263a6

Subject:

Cerambycidae, Callidiellum rufipenne, Semanotus bifasciatus, coexistence of species, resource partitioning, diel activity, wood moisture content, temperature, and sunshine

Type:

article, model:article, and TEXT

Description:

The cerambycid borers Callidiellum rufipenne (Motschulsky) and Semanotus bifasciatus (Motschulsky) infest coniferous logs in Japan, with the latter distributed in the north and at high altitudes, where both species occur sympatrically. Semanotus bifasciatus adults were active at low temperatures and very active after sunset, and less active but never inactive in the daytime, whereas C. rufipenne adults were usually active at high temperatures and almost only in the daytime. At an almost constant temperature, C. rufipenne adults were almost inactive at night, whereas S. bifasciatus adults showed only an obscure decline in activity in the morning. Of a horizontal log, the upper surface tended to be drier and lower surface wetter, and C. rufipenne larvae grew large if they were in the upper part of a log, whereas S. bifasciatus larvae grew large if in the lower part. Thus, the coexistence of these two species can be ascribed to two major segregation factors: adult segregation based on temperature and sunshine, and larval segregation associated with the moisture content of the wood.

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

European Journal of Entomology | 2007 Volume:104 | Number:2

Harvested from:

CDK

Metadata only:

false