Temperature dependent virulence of the entomopathogenic nematodes against immatures of the oriental fruit fly, Bactrocera dorsalis Hendel (Diptera: Tephritidae)

Egyptian Journal of Biological Pest Control

Table 1 Corrected percent mortality (mean ± SE) in Bactrocera dorsalis maggots (3rd instar) exposed to different EPNs at different temperature degrees and time periods (DF = 24, F = 6.20, P = 0.00)

Time (days)	Temperature (°C)	Percent mortality (mean ± SE) in B. dorsalis maggots
Time (days)	Temperature (°C)	Heterorhabditis bacteriophora	H. indica	Steinernema carpocapsae	S. asiaticum
3	15	17.18 ± 1.62 tu	12.95 ± 1.66 u	17.19 ± 1.60 tu	19.32 ± 1.65 tu
	20	44.91 ± 2.05 m–q	38.58 ± 1.98 o–r	33.18 ± 1.87 qrs	29.91 ± 1.90 rst
	25	55.41 ± 2.15 i–n	46.92 ± 1.99 l–q	38.18 ± 2.06 o–r	44.41 ± 1.87 m–q
	30	63.90 ± 2.25 f–j	59.65 ± 2.07 g–l	44.81 ± 2.07 m–q	59.65 ± 2.06 g–l
	35	72.92 ± 2.32 d–g	68.35 ± 2.25 e–i	55.41 ± 2.32 i–n	72.25 ± 2.15 d–g
6	15	42.74 ± 2.11 n–r	34.18 ± 1.90 qrs	38.34 ± 1.90 o–r	21.92 ± 1.70 stu
	20	68.15 ± 2.25 e–i	59.25 ± 2.07 g–l	51.18 ± 2.25 j–o	63.08 ± 1.99 f–j
	25	85.15 ± 2.29 a–d	61.78 ± 2.19 g–k	63.83 ± 2.30 f–j	70.58 ± 2.25 e–h
	30	79.16 ± 2.33 cde	85.14 ± 2.36 a–d	76.64 ± 2.33 c–f	76.34 ± 2.33 c–f
	35	87.49 ± 2.37 abc	87.49 ± 2.40 abc	87.49 ± 2.39 abc	87.49 ± 2.39 abc
9	15	60.15 ± 2.19 g–k	53.65 ± 2.15 j–n	35.98 ± 1.99 pqr	49.18 ± 1.98 k–p
	20	75.24 ± 2.33 c–f	60.49 ± 2.19 g–k	58.02 ± 2.32 h–m	71.31 ± 2.07 e–h
	25	77.93 ± 2.33 cde	69.01 ± 2.30 e–h	77.25 ± 2.41 cde	80.14 ± 2.33 b–e
	30	93.38 ± 2.90 ab	93.37 ± 2.90 ab	86.75 ± 2.39 abc	86.75 ± 2.39 abc
	35	97.79 ± 3.05 a	95.58 ± 3.01 a	97.83 ± 3.01 a	95.58 ± 2.15 a

*The numbers followed by different letters are significantly different from each other (Tukey’s HSD test, α = 0.05)