TY - JOUR

T1 - Contributions to the knowledge on biology and phenology of Cryphalus piceae (Coleoptera: Curculionidae: Scolytinae)

AU - Justesen, Mathias Just

AU - Hansen, Aslak Kappel

AU - Thomsen, Iben Margrete

AU - Byriel, David Bille

AU - Ro-Poulsen, Hjalte

AU - Ravn, Hans Peter

PY - 2020

Y1 - 2020

N2 - The small fir bark beetle (Cryphalus piceae) was discovered in Denmark in 2012. Since then, several local outbreaks in greenery plantations have occurred, with numerous dead Noble firs (Abies procera) reported. The aim of this study was to investigate the life cycle and behavioral patterns of C. piceae in Denmark, compared with a literature review of the general life cycle. Currently, C. piceae has been recorded from 24 plantations spread across Denmark. Experimental results confirm the possibility of two complete generations a year plus pertaining sister generation. Cryphalus piceae is generally considered a secondary bark beetle, and in Denmark it was mainly associated with Heterobasidion infected trees. However, its ability to overwinter in living healthy trees makes it a potential vector of unwanted diseases and therefore preventive control methods could be desired. Based on the life cycle, a yearly sanitary cutting in either mid-May or mid-June is recommended, as a control method against C. piceae in monocultures. In Danish greenery plantations, preventive measures against Heterobasidion were evaluated as the most important factor to avoid dead A. procera and the pertaining high populations of C. piceae.

AB - The small fir bark beetle (Cryphalus piceae) was discovered in Denmark in 2012. Since then, several local outbreaks in greenery plantations have occurred, with numerous dead Noble firs (Abies procera) reported. The aim of this study was to investigate the life cycle and behavioral patterns of C. piceae in Denmark, compared with a literature review of the general life cycle. Currently, C. piceae has been recorded from 24 plantations spread across Denmark. Experimental results confirm the possibility of two complete generations a year plus pertaining sister generation. Cryphalus piceae is generally considered a secondary bark beetle, and in Denmark it was mainly associated with Heterobasidion infected trees. However, its ability to overwinter in living healthy trees makes it a potential vector of unwanted diseases and therefore preventive control methods could be desired. Based on the life cycle, a yearly sanitary cutting in either mid-May or mid-June is recommended, as a control method against C. piceae in monocultures. In Danish greenery plantations, preventive measures against Heterobasidion were evaluated as the most important factor to avoid dead A. procera and the pertaining high populations of C. piceae.

KW - Cryphalus piceae

KW - greenery plantation

KW - Heterobasidion annosum

KW - life cycle

KW - sanitary cutting

KW - secondary bark beetle

KW - small fir bark beetle

U2 - 10.1080/02827581.2020.1797868

DO - 10.1080/02827581.2020.1797868

M3 - Journal article

AN - SCOPUS:85088962247

VL - 35

SP - 468

EP - 475

JO - Scandinavian Journal of Forest Research

JF - Scandinavian Journal of Forest Research

SN - 0282-7581

IS - 8

ER -