Impact of entomopathogenic nematodes on adults of<i>Phyllotreta</i>spp. (<i>Coleoptera: Chrysomelidae</i>) under laboratory conditions

Trdan, S.; Vidrih, M.; Valič, N.; Laznik, Žiga

doi:10.1080/09064710701467001

Cited by 28 publications

(37 citation statements)

References 21 publications

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“…(Trdan et al, 2006) and flea beetles (Phyllotreta spp.) (Trdan et al, 2008). The results of these experiments confirmed already known facts that -in optimal conditions -EPNs represent very effective agents to control insect pests.…”

Section: Discussionsupporting

confidence: 79%

Entomopathogenic nematode Steinernema feltiae (Filipjev) (Rhabditida: Steinernematidae) recorded for the first time in Slovenia

Laznik¹,

Tóth²,

Lakatos³

et al. 2008

Acta Agriculturae Slovenica

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In Slovenia only recently entomopathogenic nematodes were recorded for the first time. In the beginning of 2007, the presence of Steinernema affine was confirmed. During the further investigations in the same year Steinernema feltiae was recorded on the arable field near Cerknica. In the previous year this field was planted with chicory. In Slovenia, until now the entomopathogenic nematodes had a status of an exotic agents and their use was allowed only in the laboratory experiments. We expect that in Slovenia the use of these biological agents against insect pests will become important alternative to insecticides as it is known in many other countries of the world. Key wordsbiological control, entomopathogenic nematodes, exotic agents, Slovenia, Steinernema affine, Steinernema feltiae IZVLEČEK ENTOMOPATOGENA OGORČICA Steinernema feltiae (Filipjev) (Rhabditida: Steinernematidae) PRVIČ UGOTOVLJENA V SLOVENIJI V Sloveniji so bile entomopatogene ogorčice prvič ugotovljene šele nedavno. V začetku leta 2007 je bila potrjena zastopanost vrste Steinernema affine, med nadaljnjimi raziskavami v istem letu pa je bila na njivi v bližini Cerknice najdena tudi ogorčica Steinernema feltiae. Na omenjenem zemljišču so leto prej pridelovali radič. Doslej so imele entomopatogene ogorčice v Sloveniji status tujerodnih organizmov, njihova uporaba pa je bila dovoljena le v laboratorijskih poskusih. Pričakujemo, da bo v Sloveniji uporaba omenjenih naravnih sovražnikov škodljivih žuželk postala pomembna alternativa insekticidom, kar je sicer že znano v številnih drugih državah sveta.

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Section: Discussionsupporting

confidence: 79%

Entomopathogenic nematode Steinernema feltiae (Filipjev) (Rhabditida: Steinernematidae) recorded for the first time in Slovenia

Laznik¹,

Tóth²,

Lakatos³

et al. 2008

Acta Agriculturae Slovenica

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“…The main reason for the use of relatively high concentrations of nematode suspensions is the fact, that the nematodes were also tested against the Colorado potato beetle adults. The adults are known as less susceptible to nematodes attack (Svendsen & Steenberg, 2000), therefore higher concentrations of nematode suspensions were also used in many of previous studies on the efficacy of these biological control agents (Lacey et al, 1993;Trdan et al, 2008). About five potato leaves were placed in each of several 14 cm (diameter) Petri dishes lined with filter paper disks.…”

Section: Laboratory Bioassaymentioning

confidence: 99%

“…But all preliminary research on this agent has been conducted under laboratory conditions (Trdan et al, 2006, Trdan et al, 2008. We have now investigated the ability of EPNs to infect larvae and adults of the Colorado potato beetle in a rearing chamber.…”

Section: Introductionmentioning

confidence: 99%

Activity of four entomopathogenic nematode species against different developmental stages of Colorado potato beetle, Leptinotarsa decemlineata (Coleoptera, Chrysomelidae)

et al. 2009

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SummaryFour entomopathogenic nematode species (Steinernema feltiae, S. carpocapsae, Heterorhabditis bacteriophora, and H. megidis) were tested in a laboratory bioassay for the efficacy of these pathogens in controlling the larvae and adults of the Colorado potato beetle, Leptinotarsa decemlineata. The main aim of the study was to develop an efficient sustainable control method against the pest. With this we could develop a strategy of potato production with the intention of diminishing or even preventing the appearance of pest resistance to insecticides. The activity of these biological agents was assessed at three different temperatures (15, 20, and 25 °C) and three concentrations (200, 1000, and 2000 infective juveniles per individual). Mortality of three stages (young and old larvae and adults) was determined 2, 4, and 7 days after treatment. At 15 °C entomopathogenic nematodes showed the lowest efficacy against all insect stages. No significant differences in efficacy was determined at 20 and 25 °C as all nematodes caused prompt death of all stages. At all temperatures young larvae were most susceptible. However, when controlling overwintered adults for the purpose of preventing the mass appearance of Colorado potato beetle, we recommend an application of higher concentrations of S. feltiae suspension.

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“…Based on laboratory trials, Trdan et al (2008) concluded that several species of EPNs would be suitable for the control of the adults of Phyllotreta spp. in Brassica crops in Slovenia.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of entomopathogenic nematodes (Rhabditida: Steinernematidae and Heterorhabditidae) against the striped flea beetle, Phyllotreta striolata

Xu¹,

Clercq

Moens

et al. 2010

BioControl

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The striped flea beetle, Phyllotreta striolata (F.) (Coleoptera: Chrysomelidae), is an economically important pest on crucifer vegetables worldwide. Twenty isolates of entomopathogenic nematodes (EPNs) (Rhabditida: Steinernematidae and Heterorhabditidae) were evaluated against soil-dwelling stages of the flea beetle in the laboratory. The corrected mortalities and reproduction rates at a concentration of 36 infective juveniles (IJs) cm -2 surface area of sand against third instars of the pest greatly differed among the tested isolates, ranging from 6.7% to 100%. When tested over a range of temperatures from 15°C to 35°C, 25°C was found to be the optimal temperature for four selected nematode isolates (Steinernema carpocapsae All, Steinernema pakistanense 94-1, Heterorhabditis indica LN2 and H. indica 212-2) to infect the third instar and reproduce in the cadavers. S. pakistanense 94-1 and H. indica 212-2 showed markedly greater heat-tolerance compared to S. carpocapsae All and H. indica LN2. Corrected mortalities and reproduction rates increased as the concentration of IJs increased from 4 to 36 IJs cm -2 . The LC 50 values of S. carpocapsae All, S. pakistanense 94-1, H. indica LN2 and 212-2 were 17.1, 15.5, 6.5 and 5.9 IJs cm -2 , respectively. The third instars larvae and pupae of P. striolata were more susceptible to the four nematode isolates than the first and second instars. Higher pathogenicity and greater heat tolerance and reproduction potential makes H. indica 212-2 the most promising candidate for the biological control of P. striolata under the field conditions of South China.

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Impact of entomopathogenic nematodes on adults ofPhyllotretaspp. (Coleoptera: Chrysomelidae) under laboratory conditions

Cited by 28 publications

References 21 publications

Entomopathogenic nematode Steinernema feltiae (Filipjev) (Rhabditida: Steinernematidae) recorded for the first time in Slovenia

Entomopathogenic nematode Steinernema feltiae (Filipjev) (Rhabditida: Steinernematidae) recorded for the first time in Slovenia

Activity of four entomopathogenic nematode species against different developmental stages of Colorado potato beetle, Leptinotarsa decemlineata (Coleoptera, Chrysomelidae)

Efficacy of entomopathogenic nematodes (Rhabditida: Steinernematidae and Heterorhabditidae) against the striped flea beetle, Phyllotreta striolata

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