Efficacy of entomopathogenic nematodes against neonate
larvae of <Emphasis Type="Italic">Capnodis tenebrionis</Emphasis> (L.) (Coleoptera:
Buprestidae) in laboratory trials |
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Authors: | Email author" target="_blank">Fernando?GARCíA DEL PINOEmail author Ana?MORTON |
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Institution: | (1) Departamento Biología Animal, Vegetal y Ecología, Facultad de Ciencias, Universidad Autónoma de Barcelona, Bellaterra, Barcelona, E-08193, Spain |
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Abstract: | The efficacy of five entomopathogenic nematode strains of the families Steinernematidae and Heterorhabditidae was tested against the neonate larvae of Capnodis tenebrionis. The nematode strains screened included two of Steinernema carpocapsae (Exhibit and M137), and one each of S. feltiae (S6), S. arenarium (S2), and Heterorhanditis bacteriophora (P4). Exposure of neonate larvae of Capnodis to 10 and 150 infective juveniles (IJs) per larva (equivalent to 3 and 48 IJs/cm2 respectively) in test tubes with sterile sand, resulted in mortality between 60–91% and 96–100%, respectively. At a concentration of 150 IJs/larva, all of the nematode strains were highly virulent. Both S. carpocapsae strains (Exhibit and M137) caused infection and mortality to larvae more quickly than the other strains. However, at a lower concentration assay (10 IJs/larva), S. arenarium was the most virulent strain. The penetration rate as an indicator of entomopathogenic nematode infection was also evaluated. The highest value was recorded for S. arenarium (36%), followed by H. bacteriophora (30.6%), S. feltiae (23.1%), and S. carpocapsae (20.7%). |
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Keywords: | biological control Buprestidae Capnodis tenebrionis Heterorhabditis bacteriophora infectivity neonate larvae penetration rate Steinernema arenarium Steinernema carpocapsae Steinernema feltiae |
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