Table 2. Basic characteristics of B. xylophilus (YB-1 isolate).

			Mean Life span
			mated		non-mated
Physiological properties of YB-1 isolates*	Average duration of egg laying (days±SD, n = 60)	Mean fecundity per adult female (mean±SD, n = 60)	Male	Female	Male	Female
Basic Characteristics	14±2 days	149±25 eggs	17 days	18 days	45 days	51 days

*Worms obtained at a certain stage were grown to young adults. One female and three males were placed on each observation plate and cultured at 25°C for several days.