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http://dx.doi.org/10.5423/PPJ.NT.09.2012.0135

Morphometric Variation in Pine Wood Nematodes, Bursaphelenchus xylophilus and B. mucronatus, Isolated from Multiple Locations in South Korea  

Moon, Yil-Sung (Division of Forest Insect Pests and Diseases, Korea Forest Research Institute)
Son, Joung A (Division of Forest Insect Pests and Diseases, Korea Forest Research Institute)
Jung, Chan Sik (Division of Forest Insect Pests and Diseases, Korea Forest Research Institute)
Publication Information
The Plant Pathology Journal / v.29, no.3, 2013 , pp. 344-349 More about this Journal
Abstract
Intraspecific variation in morphometry of pine wood nematodes Bursaphelenchus xylophilus and B. mucronatus in relation to geographical locations in South Korea was investigated using morphometric characters (body length, a, b and c ratio, stylet length, and spicule length for a male nematode and V (%) value for a female nematode). B. xylophilus was isolated from Pinus thunbergii in Jinju (1998), Ulsan (2000), Yangsan (2000), Mokpo (2001) and Jeju (2004), and from P. densiflora in Gumi (2001). B. mucronatus was isolated from P. thunbergii in Jinju (1991) and from P. densiflora in Milyang (2001). The body length of male and female B. xylophilus had the highest coefficient of variability and showed significant differences among geographical locations. The V (%) value for female B. xylophilus showed the lowest coefficient of variability, changing little with geographical area and host plant. All morphometric characters in B. mucronatus except for stylet length and female body length showed no significant differences between locations or hosts, suggesting they may not be affected by geographical area or host plant.
Keywords
geographical location; intraspecific variation; pine wilt disease; Pinus densiflora; Pinus thunbergii;
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