Host range testing of the nearctic beneficial parasitoid Neodryinus typhlocybae

Strauss, Gudrun

doi:10.1007/s10526-008-9187-4

Cited by 3 publications

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“…In Europe, N. typhlocybae depends on the presence of its host species M. pruinosa, whereas three other flatid host species are known in north america (Guglielmino and Olmi 1997). Neodryinus typhlocybae has a narrow host range and will only attack the target species, as this is the sole host species for the parasitoid present in austria (Strauss 2009). In austria, several inoculative releases of N. typhlocybae would initially be necessary at sites heavily infested with M. pruinosa in Vienna and Graz.…”

Section: Discussionmentioning

confidence: 99%

“…The widespread presence of green areas, gardens and hedges aids the expansion of population of N. typhlocybae (Girolami and Mazzon 1999). Spread of N. typhlocybae to host-free places has no relevance, since establishment would be impossible as no other host species occur in austria (Strauss 2009). …”

Section: Probability Of Spreadmentioning

confidence: 99%

“…Since the north american planthopper Metcalfa pruinosa (Say 1830) (Hemiptera: Flatidae) was first reported from northern Italy in 1979, it has spread into new areas of the Mediterranean and is now widely distributed in several European countries (nicoli 1997;Strauss 2009). this polyphagous planthopper species has become a serious pest in agriculture and public green space by forming dense populations which subsequently cause severe damage in orchards, vineyards, ornamentals and urban areas (Zangheri and donadini 1980;Girolami and Camporese 1994).…”

Section: Introductionmentioning

confidence: 99%

“…In a first step, the host specificity of N. typhlocybae was investigated in laboratory host range tests with respect to non-target plant-and leafhopper species in austria (Strauss 2009). The results of these tests support the assumption that N. typhlocybae is host specific to species of the family Flatidae, of which only the introduced pest species occurs in austria.…”

Section: Introductionmentioning

confidence: 99%

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Environmental risk assessment for Neodryinus typhlocybae, biological control agent against Metcalfa pruinosa, for Austria

Strauss

2013

European Journal of Environmental Sciences

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The potential environmental risks of Neodryinus typhlocybae, a parasitic wasp from North America, were evaluated with regard to its safe use as an exotic biocontrol agent for the planthopper Metcalfa pruinosa in Austria. Following an earlier host range study of N. typhlocybae conducted in the laboratory, the present study assessed the potential for establishment and spread as well as negative indirect effects on non-target organisms. The potential release sites in Austria were analysed for matching of the climatic requirements for establishment of N. typhlocybae. The two proposed release locations, Vienna and Graz, have a predominantly similar climate to the parasitoid's region of origin, though the comparably cooler mean summer temperatures might result in a low emergence rate of the partial second generation. The natural spread potential of N. typhlocybae was reviewed and is considered to be sufficiently good for released individuals to reach nearby sites infested with M. pruinosa. However, a perceptible spreading of N. typhlocybae females only occurs a few years after release and seems to be strongly dependent on the host density. Gelis areator, a hyperparasitoid of N. typhlocybae known to occur in Austria, might have negative effects on the population of the beneficial organism. Advantages and disadvantages of chemical and biological control methods against M. pruinosa were evaluated. It is concluded that N. typhlocybae is very well suited as a biological control agent for M. pruinosa in Austria, as no adverse effects on non-target species are expected but its release offers advantages with regard to sustainable and environmentally friendly pest management.

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Section: Discussionmentioning

confidence: 99%

Section: Probability Of Spreadmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Environmental risk assessment for Neodryinus typhlocybae, biological control agent against Metcalfa pruinosa, for Austria

Strauss

2013

European Journal of Environmental Sciences

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“…In 1987, N. typhlocybae was introduced in Italy into the Veneto region for the biological control of Metcalfa pruinosa (Say) (Hemiptera, Flatidae). First detected in Italy in 1979, this planthopper native of the United States rapidly spread because of its polyphagy and lack of natural enemies (Strauss, 2009;Zangheri & Donadini, 1980). Among the parasitoids in North America, N. typhlocybae was considered the most promising control agent.…”

mentioning

confidence: 99%

Exotic Insects in Italy: An Overview on Their Environmental Impact

Jucker¹,

Lupi²

2011

The Importance of Biological Interactions in the Study of Biodiversity

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Toxicity of Plant Essential Oils and Their Spray Formulations against the Citrus Flatid Planthopper Metcalfa pruinosa Say (Hemiptera: Flatidae)

Kim¹,

Ji²,

Seo³

et al. 2013

The Korean Journal of Pesticide Science

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The insecticidal activity of 124 plant essential oils and control efficacy of six experimental spray formulations (SF) containing 0.25, 0.5, 1, 2.5, 5, and 10% of the selected oils was examined against both nymph and adult of the citrus flatid planthopper, Metcalfa pruinosa using direct contact applications (leaf dipping and spray). Reponses varied according to dose (1,000 and 500 mg/L). When exposed at 1,000 mg/L for 24 h using leaf dipping assay, 19 essential oils showed strong mortality (100%) among 124 essential oils screened. At 500 mg/L, 100% mortality was observed in cinnamon technical, cinnamon green leaf, cinnamon #500, cassia tree, citronella java and pennyroyal followed by origanum, thyme white, grapefruit, savory, fennel sweet, aniseed and cinnamon bark showed considerable mortality (93.3-80%) against nymphs of M. pruinosa. The moderate mortality (73.3-60%) was found in thyme red, tagetes, calamus, lemoneucalptus and geranium. Oils applied as SF-10% sprays provided 100 % mortality against adult M. pruinosa. One hundred mortalities were achieved in cinnamon technical at >SF-0.5 formulation, in cinnamon #500, cinnamon green leaf and penny royal at >SF-2.5. To reduce the level of highly toxic synthetic insecticides in the agricultural environment, the active essential oils as potential larvicides could be provided as an alternative to control M. pruinosa populations.

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Host range testing of the nearctic beneficial parasitoid Neodryinus typhlocybae

Cited by 3 publications

References 0 publications

Environmental risk assessment for Neodryinus typhlocybae, biological control agent against Metcalfa pruinosa, for Austria

Environmental risk assessment for Neodryinus typhlocybae, biological control agent against Metcalfa pruinosa, for Austria

Exotic Insects in Italy: An Overview on Their Environmental Impact

Toxicity of Plant Essential Oils and Their Spray Formulations against the Citrus Flatid Planthopper Metcalfa pruinosa Say (Hemiptera: Flatidae)

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