Acaricidal and repellent activities of Litsea cubeba (Lour.) oil and 3,7-dimethyl-2,6-octadienal against Haemaphysalis longicornis (Acari: Ixodidae)

Applied Biological Chemistry

Table 1 Acaricidal activities of Litsea cubeba oil against Haemaphysalis longicornis unfed nymphs and adults

Samples	Developmental stage	LC₅₀ (mg/mL) (95% CL)^a	LC₉₀ (mg/mL) (95% CL) ^a	Slope ± SE	χ² value (df, p)
Litsea cubeba	Nymphs	39.34 (34.25–44.31)	70.74 (61.76–92.81)	5.51 ± 0.89	4.714 (5, 0.452)
Litsea cubeba	Adults	47.64 (41.94–53.09)	78.99 (68.65–97.93)	5.84 ± 0.95	5.338 (6, 0.501)
Negative control	Nymphs	–^b	–	–	–
Negative control	Adults	–	–	–	–

^aLC₅₀ (LC₉₀) is the average of three determinations, with 20 ticks per replication, exposed for 24 h
^bNo activity