J. For. Sci., 2007, 53(20):53-56 | DOI: 10.17221/2158-JFS

Contribution to knowledge of Hylesinus fraxini (Panzer, 1779) (Coleoptera: Scolytidae) natural enemies from Northern Moravia (Czech Republic)

O. Nakládal, M. Turčáni
Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic

Predation by natural enemies was studied as mortality factors of Hylesinus fraxini in 2006-2007. Predation by birds was not recorded and predation rate by insect reached 0.1%. Only one insect predator was reared - Thanasimus formicarius (Linnaeus, 1758). The total rate of parasitism was 54.0%. At least 8 species of parasitoids from the order Hymenoptera were recorded. The most abundant parasitoid was Eurytoma morio Boheman, 1836 (44.1% from the total number of all reared parasitoids; 23.8% of the total mortality), subsequently Eurytoma arctica Thomson, 1876 (31.7%; 17.1%), Cheiropachus quadrum (Fabricius, 1787) (12.8%; 6.9%), Braconidae (6.3%; 3.4%), Rhaphitelus maculatus Walker, 1834 (3.9%; 2.1%), Mesopolobus sp. (0.5%; 0.3%), were not identified Pteromalidae (0.5%; 0.3%) and Tetrastichus sp. (0.2%; 0.1%).

Keywords: predators; parasitoids; natural enemies; bark beetles; Hylesinus fraxini; Thanasimus formicarius; Cheiro- pachus quadrum; Eurytoma morio; Eurytoma arctica; Czech Republic; Central Europe

Published: December 31, 2007  Show citation

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Nakládal O, Turčáni M. Contribution to knowledge of Hylesinus fraxini (Panzer, 1779) (Coleoptera: Scolytidae) natural enemies from Northern Moravia (Czech Republic). J. For. Sci. 2007;53(Special Issue):53-56. doi: 10.17221/2158-JFS.
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