Control of Pest Mole Crickets (orthoptera: Gryllotalpidae) in Bahiagrass Pastures with the Nematode Steinernema Scapterisci (rhabditida: Steinernematidae)
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Pathogenicity of Steinernema scapterisci to Selected Invertebrates.
Steinernema scapterisci was more pathogenic to insects tested in the order Orthoptera than to those in the orders Lepidoptera or Hymenoptera; it was not pathogenic to earthworms. The nematode also infected and killed the mole crickets Scapteriscus acletus and S. vicinus when released four successive times at 10-day intervals in containers of soil infested with the nematode.
متن کاملNectar-seeking and host-seeking by Larra bicolor (Hymenoptera: Crabronidae), a parasitoid of Scapteriscus mole crickets (Orthoptera: Gryllotalpidae).
Larra bicolor F. (Hymenoptera: Crabronidae) is a specialist parasitoid of Scapteriscus (Orthoptera: Gryllotalpidae) mole crickets, attacking adults and medium to large nymphs of the hosts. Adult wasps derive energy from plant nectars. In replicated trials in pastures in northern Florida, many more wasps fed on nectar of Spermacoce verticillata F. (Rubiaceae), a non-native plant, than on nectar ...
متن کاملSusceptibility of Pupae of Two Cocoon-forming Lepidopterous Species to the Entomogenous Nematode, Neoaplectana carpocapsae (Rhabditida: Steinernematidae).
T h e intent would be to reduce or delay the nematode populat ion build-up until an acceptable yield was assured, as is usual with toxic nonfumigant nematicides. An added benefit of nematode control with amino acids is the human nutr i t ional value of any residual material. Furthermore, these findings clearly establish the feasibility of alternative chemotherapy as a practical, safe means of m...
متن کاملMode of Entry and Sites of Development of Steinernema scapterisci in Mole Crickets.
Infective juvenile steinernematid nematodes have been reported to enter their insect hosts through the mouth, anus, and spiracles (1-3,5-8). Information is lacking, however, for Steinernema scapterisci Nguyen & Smart, 1990 (4), a promising biological control agent of mole crickets in the genus Scapteriscus. This paper reports on the mode of entry of S. scapterisci into mole crickets and the pri...
متن کاملThe influence of insecticides on the viability of entomopathogenic nematodes (Rhabditida: Steinernematidae and Heterorhabditidae) under laboratory conditions.
BACKGROUND In order to increase our knowledge on the susceptibility of entomopathogenic nematode (EPN) species to agrochemicals, the compatibility of the infective juveniles (IJs) of the EPN (Steinernema and Heterorhabditis) with eight chemical and bio-insecticides was investigated under laboratory conditions. The effect of direct IJ exposure to insecticides for 6 and 24 h was tested in a Petri...
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تاریخ انتشار 2007