Efficacy of indigenous isolates of Beauveria bassiana (Balsamo) Vuillemin (Deuteromycota: Hyphomycetes) against the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae)

Egyptian Journal of Biological Pest Control

Table 5 Percentage mortalities of 0–48-h-old adults of Leptinotarsa decemlineata in response to the tested Beauveria bassiana isolates at 3, 5, 7, and 9 days after treatment under laboratory conditions

Isolate name	Percent mortality (±SE) from a single-dose trial^*				df	F	P
Isolate name	3 days	5 days	7 days	9 days	df	F	P
BbKm-1	0.0±0.0^aB**	6.7±3.3^cdB	13.3±3.3^bB	36.7±8.8^eA	11	10.2	0.004
BbKm-2	0.0±0.0^aC	16.7±3.3^abcdBC	26.7±6.7^abAB	40.0±0.0^deA	11	20.5	0.000
BbDm-1	6.7±3.3^aC	33.3±3.3^aB	43.3±6.7^abB	93.3±3.3^abA	11	67.6	0.000
BbFn-3	0.0±0.0^aC	3.3±3.3^dBC	13.3±3.3^bB	46.7±3.3^deA	11	54.6	0.000
BbKp-1	3.3±3.3^aB	10.0±5.8^bcdB	23.3±8.8^abAB	53.3±8.8^cdeA	11	9.8	0.005
BbAk-1	0.0±0.0^aC	3.3±3.3^dC	26.7±3.3^abB	56.7±6.7^cdeA	11	41.1	0.000
BbSr-1	10.0±5.8^aB	13.3±8.8^abcdB	30.0±10.0^abB	76.7±6.7^abcA	11	14.8	0.001
BbKr-1	3.3±3.3^aB	10.0±5.8^bcdB	20.0±5.8^abB	80.0±0.0^abcA	11	63.4	0.000
BbDs-2	10.0±5.8^aC	26.7±3.3^abcBC	46.7±8.8^aB	96.7±3.3^aA	11	42.3	0.000
BbMg-1	3.3±3.3^aB	16.7±3.3^abcdB	20.0±0.0^abAB	36.7±6.7^eA	11	11.3	0.003
BbMg-2	16.7±3.3^aB	30.0±0.0^abB	36.7±8.8^abB	93.3±3.3^abA	11	45.7	0.000
BbMp-1	10.0±5.8^aB	26.7±3.3^abcC	50.0±0.0^aB	93.3±6.7^abA	11	58.8	0.000
BbGp-1	3.3±3.3^aB	10.0±5.8^bcdB	23.3±6.7^abB	66.7±8.8^bcdA	11	19.4	0.000
BbKl-1	0.0±0.0^aC	6.7±3.3^cdC	30.0±5.8^abB	80.0±0.0^abcA	11	118.3	0.000
df	41	41	41	41
F	2.2	5.1	3.3	15.7
P	0.035	0.000	0.004	0.000

*In a single-dose trial, all the isolates were tested at a concentration of 1 × 10⁷ conidia/ml
**Means in a column followed by the same lowercase letter are not significantly different, and means in a row followed by the same uppercase letter are not significantly different (Tukey’s HSD test; P < 0.05)