STEINERNEMATID NEMATODES WERE EVALUATED AGAINST THE THREE MAJOR CRUCIFEROUS INSECT PESTS: the imported cabbageworm Artogeia rapae, the diamondback moth Plutella xylostella, and the cabbage looper Trichoplusia ni. LC(50) values of S. carpocapsae All, S. feltiae UK, S. feltiae 27, and S. riobrave 335 were 18.2, 3.6, 5.7, and 8.3 on A. rapae L(2); 24.5, 2.3, 6.0, and 15.5 on P. xylostella L(3); an...

• Metarhizium VOCs, 1-octen-3-ol and 3 octanone, influence behaviour of EPN. High doses octanone repel or kill EPN infective juveniles. volatiles reduce infectivity insect hosts. VOCs immobilise insects. Volatiles affect reproduction inside host. The entomopathogenic fungus (EPF) brunneum occupies the same ecological niche as nematodes (EPN), with both competing for insects a food source in rhi...

The oriental fruit fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae), is an important pest of various crops. Little known about the role naturally present soil-entomopathogens play in its mortality. Preimaginal mortality B. during pupation soil was determined 3-dl plastic pots laboratory, simulating natural conditions. Eleven treatments included standard potting soil, sterilized sand, no...

A soil survey for entomopathogenic nematodes was conducted throughout the nine islands of the Azorean archipelago. Forty-six out of 1,180 samples (3.9%) were positive, with Heterorhabditis spp. isolated from 30 sites on six islands and Steinernema spp. isolated from 16 sites on three islands. São Miguel and Terceira Islands were positive for both genera, and Pico Island was positive only for St...