Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Relative attractiveness of some volatiles to the introduced pine bark beetles, Hylastes ater and Hylurgus ligniperda (Curculionidae: Scolytinae).

Abstract

Raw turpentine, α- and β-pinene, and ethanol were as attractants to Hylastes ater and Hylurgus ligniperda. These volatiles were tested alone and in combination with ethanol using multiple funnel traps in cut-over Pinus radiata forest in North Island, New Zealand. Compared with combinations of α- and β-pinene, and ethanol, raw turpentine alone was a poor attractant for Hylurgus ligniperda and Hylastes ater. With the addition of ethanol, raw turpentine was the most attractive volatile combination to Hylastes ater, while α-pinene and ethanol, and β-pinene and ethanol were the most attractive volatile combinations to Hylurgus ligniperda. The addition of ethanol had a synergistic effect on all attractants, except α-pinene to Hylastes ater. Raw turpentine and ethanol is a suitable, low cost volatile combination for use in programmes to monitor populations of these bark beetles, and is a particularly effective attractant for use in Hylastes ater trapping programmes.