Nematicidal Activity of Akylamine against the Pine Wood Nematode,Bursaphelenchus lignicolus

Abstract

In random screening of nematicidal compounds against the pine wood nematode Bursaphelenchus lignicolus using the so-called immersion test, a series of mono-and di-functional alkanes, aromatics and other miscellaneous compounds (total 105) were tested. Among these, thenalkylamines were identified as the most potentially-active nematicidal compound. Relationship between nematicidal activity and the carbon-chain length of amines, mono-basic acids and alcohols was observed. Among those tested, n-octadecylamine showed the highest activity (LC50; 8.61 x 10-6 M, 2.08 ppm) on a molar basis.

Fatty Amines from Little Black Ants, Monomorium minimum, and Their Biological Activities Against Red Imported Fire Ants, Solenopsis invicta

“…It was found that spraying 10 mg/ml decylamine on alfalfa was repellent to the honey bee, Apis mellifera in the field (Atkins et al 1975). Decylamine and dodecylamine also showed high nematicidal activity against the pine wood nematode, Bursaphelenchus xylophilus (Nagase et al 1982), the latter being more active than the former. In this study, decylamine showed significantly higher toxicity and digging suppression against S. invicta than dodecylamine, thus indicating that the biological activity of fatty amines may be species dependent.…”

“…However, it may be that decylamine bonds to its target site more readily than dodecylamine. In a nematicidal activity test, water solutions were used (Nagase et al 1982). Dodecylamine should have a lower water solubility than decylamine, therefore, there must be reasons other than water solubility, that causes decylamine to have lower toxicity than dodecylamine against nematodes.…”

Pest Risk Analysis (PRA) for the territories of the European Union (as PRA area) on Bursaphelenchus xylophilus and its vectors in the genus Monochamus

“…Attempts to use biological control agents such as parasitoids and pathogens against Monochamus spp. have, so far, proved unsuccessful (Nagase et al, 1982;Ogawa, 1988;Matsuda et al, 1989).…”