Larvicidal effect of Cedrus libani seed oils on mosquito Culex pipiens

Figures & data

Table 1.  Locations of C. libani populations in Turkey and contents of essential oil in their seeds.

Population	Altitude (m)	Latitude N	Longitude E	Mean essential oil (%)
Avlankuzu Mountain, Elmalı, Antalya	1100	36°34′48″	29°57′57″	0.80
Camkuyusu, Elmalı, Antalya	1800	36°35′86″	30°01′55″	1.25
Degirmenlik, Mut, Mersin	1800	36°41′20″	33°03′34″	2.50
Sogutozu, Mut, Mersin	1650	36°46′30″	33°32′20″	2.75
Aslankoy, Mersin	1800	37°00′00″	34°14′00″	1.75
Pozantı, Adana	1320	37°30′32″	34°57′38″	1.25

Table 2.  LC₅₀ values [ppm (95% confidence limits)] at 24 h of essential oil application of six C. libani populations against third–fourth instar C. pipiens.

Avlankuzu	Camkuyusu	Degirmenlik	Sogutozu	Aslankoy	Pozantı
105.5	109.3	59.0	116.0	66.6	47.8
(91.7–118.5)	(68.5–147.6)	(22.3–119.2)	(101.2–130.0)	(10.0–210.0)	(4.2–150.4)

Table 3.  Mean percent mortality ± SE of seed essential oils from six C. libani populations at six concentrations when compared with temephos (TMP) and a distilled water (DW) control.

Dose (ppm)	Avlankuzu	Camkuyusu	Degirmenlik	Sogutozu	Aslankoy	Pozantı
10	14.8 ± 2.8^b,A	16.7 ± 1.0^b,A	20.0 ± 1.0^b,A	15.9 ± 1.0^b,A	26.5 ± 1.0^b,AB	32.8 ± 1.0^b,B
25	16.9 ± 2.8^b,A	21.3 ± 1.8^b,AB	32.1 ± 1.0^bc,ABC	22.7 ± 0.0^b,AB	28.0 ± 1.8^b,C	39.0 ± 2.0^bc,BC
50	22.7 ± 1.0^b,A	22.0 ± 1.0^b,A	47.0 ± 1.0^d,B	20.3 ± 1.0^b,A	39.0 ± 1.8^b,A	46.9 ± 2.0^bc,B
100	48.2 ± 2.8^c,A	53.4 ± 1.8^c,A	51.0 ± 1.0^cd,A	46.0 ± 2.8^c,A	45.6 ± 2.8^b,A	54.5 ± 2.8^c,A
200	88.8 ± 3.7^d,C	78.7 ± 2.0^d,AB	73.5 ± 1.0^e,A	87.2 ± 2.8^d,BC	71.8 ± 1.8^c,A	67.7 ± 2.8^d,BC
400	100.0 ± 0.0^e,A	100.0 ± 0.0^e,A	100.0 ± 1.0^f,A	100.0 ± 0.0^e,A	100.0 ± 0.0^d,A	100.0 ± 0.0^d,A
TMP	100.0 ± 0.0^e,A	100.0 ± 0.0^e,A	100.0 ± 1.0^f,A	100.0 ± 0.0^e,A	100.0 ± 0.0^d,A	100.0 ± 0.0^d,A
DW	0.0 ± 0.0^a,A	0.0 ± 0.0^a,A	0.0 ± 0.0^a,A	0.0 ± 0.0^a,A	0.0 ± 0.0^a,A	0.0 ± 0.0^a,C

Means followed by the same lower case letter within a given population (columns) are not significantly different (Duncan’s multiple range test, p < 0.05); means followed by the same upper case letter at a given dose (row) are not significantly different (Duncan’s multiple range test, p < 0.05).