A new distribution record of Steinernema abbasi Elawad, Ahmad and Reid, 1997 (Rhabditida: Steinernematidae) in Japan with a note on its pathogenicity against the turnip moth larvae, Agrotis segetum (Lepidoptera: Noctuidae)

Influence of temperature on pathogenicity of some entomopathogenic nematode isolates (Steinernema spp.) from Japan screened for ability to control some noctuid moth larvae

“…Although the mortality at 25 was almost at the same level among them, S. abbasi OnIr181 caused significantly higher mortality at 30 and 35 (Fig. 5) (Yoshida, 2007). Steinernema abbasi OnIr181 was also highly pathogenic against the late instar larvae of S. litura at 25, 30 and 35 (Fig.…”

“…The first and second screening tests did not identify any steinernematid species/isolates which showed high pathogenicity at temperatures greater than 25 . In contrast Yoshida (2007) reported that S. abbasi OnIr181 from "Iriomote-jima Is." in a subtropical region showed high pathogenicity against late instar larvae of A. segetum at 25 and 30 .…”

“…The isolate S. feltiae HkEr36 caused more than 60% mortality at 10, 15, 20, and 25 , and the mortality was significantly reduced at 7 and 30 . Steinernema abbasi OnIr181 caused more than 80% mortality at 25 and 30 , and the mortality was significantly reduced at 20 and 35 (the modified data derived from Yoshida (2007)). Steinernema carpocapsae All caused more than 70% mortality at 20 and 25 , and the mortality was highly reduced at 10 and 35 (Fig.…”

“…Therefore S. abbasi was added to the present test. The mortality of A. segetum caused by S. abbasi OnIr181 was used in "Results" and "Discussion" after correcting and modifying the mortality data from Yoshida (2007).…”

“…Especially an introduced nematode insecticide product composed of S. carpocapsae is widely being applied to turfgrass, vegetables, fruit trees, flowers, ornamental plants, and so on (JPP-NET, 2009). On the contrary, although more than ten steinernematid species have been recorded from Japan (Mamiya and Ogura, 1990;Mamiya et al, 1995;2001;Phan et al, 2006;Stock et al, 1998;Yoshida, 2003;2004;2007;Yoshida et al, 1998), so far only S. kushidai Mamiya, 1988 has been applied to control white grubs mainly in golf course turfgrass and sweet potato fields (Ando, 1995;Ogura and Oya, 1992;Oya and Kamiwada, 1990;Suzuki et al, 2000).…”