Description, biologie et importance d'une nouvelle espèce d'Allantonematidae [Nématode] parasite des coccinelles aphidiphages:Parasitylenchus coccinellinae, n. sp.

Iperti, G.; Waerebeke, D. Van

doi:10.1007/bf02371781

Cited by 12 publications

(22 citation statements)

References 6 publications

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“…The major morphological characters used for identification of the nematodes did not significantly differ from the description of Parasitylenchus coccinellinae by Iperti & van Waerebeke (1968) (Fig. 1).…”

Section: Resultsmentioning

confidence: 98%

“…The length of gravid females, the distance from vulva to apex expressed as % of total body length, the length and width of free-living females all lie within the ranges described for P. coccinellinae. However, the egg dimension and the length of the tail of the nematodes found in H. axyridis exceed measures given by Iperti & van Waerebeke (1968). We measured an average egg width of 28 µ and a tail length of 64 µ compared to 18-23 µ and 30-41 µ for eggs and tail, respectively in Propylea 14-punctata (Iperti & van Waerebeke, 1968).…”

Section: Resultsmentioning

confidence: 99%

“…However, the egg dimension and the length of the tail of the nematodes found in H. axyridis exceed measures given by Iperti & van Waerebeke (1968). We measured an average egg width of 28 µ and a tail length of 64 µ compared to 18-23 µ and 30-41 µ for eggs and tail, respectively in Propylea 14-punctata (Iperti & van Waerebeke, 1968). These differences are not sufficient to warrant a new species at this time, however, more material and molecular analysis of nematodes are needed for a definitive species identification.…”

Section: Resultsmentioning

confidence: 99%

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Parasitylenchus sp. (Tylenchomorpha: Allantonematidae) parasitizing field populations of Harmonia axyridis (Coleoptera: Coccinellidae)

Harding¹,

Poinar²,

Dimitrova³

et al. 2011

Eur. J. Entomol.

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Abstract. Adults of the invasive harlequin ladybird, Harmonia axyridis (Coleoptera: Coccinellidae), were found to be parasitized by nematodes (Tylenchomorpha: Allantonematidae) in Denmark. The nematodes were identified as Parasitylenchus sp. Major morphological characters of the nematodes did not differ significantly from Parasitylenchus coccinellinae Iperti & van Waerebeke 1968, but minor deviations in egg dimension and tail length were measured. Parasitism was only recorded in early autumn, with prevalence ranging from 2 to 33%. Adult and juvenile nematodes occurred together in the body cavity of both female and male H. axyridis.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Parasitylenchus sp. (Tylenchomorpha: Allantonematidae) parasitizing field populations of Harmonia axyridis (Coleoptera: Coccinellidae)

Harding¹,

Poinar²,

Dimitrova³

et al. 2011

Eur. J. Entomol.

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“…While no sequences are available for the species P. coccinellinae Iperti and Waerebeke to assess the phylogenetic relationship of these two related species, the bifurcated tail has not been reported for P. coccinellinae (Iperti andvan Waerebeke, 1968, Poinar andSteenberg, 2012). Therefore, based on morphological and molecular characters this is a first report of nematodes P. bifurcatus parasitizing multicolored Asian lady beetles H. axyridis in Slovenia.…”

Section: Resultsmentioning

confidence: 99%

First report of nematodes Parasitylenchus bifurcatus Poinar & Steenberg, 2012 parasitizing multicolored Asian lady beetle Harmonia axyridis (Pallas, 1773) in Slovenia

Stare

Širca

Urek

2017

AAS

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In years 2015 and 2016 around 200 specimens of ladybird species Harmonia axyridis were collected in Slovenia. Ladybirds were dissected and checked under stereomicroscope for presence of nematodes. Nematodes were discovered in samples of ladybirds H. axyridis collected at Brdo pri Lukovici and Trboje. The incidence of parasitized ladybirds was around 30 %. Nematodes were analysed morphometrically and the characteristic features of Parasitylenchus bifurcatus nematodes were observed: straight stylet lacking basal thickenings, a bursa and a forked tail tip in the vermiform females and juvenile males. The identity was confirmed with 18S rDNA region sequence (acc. no. LT629306 and LT629307) which showed high similarity (>99.9 % nucleotide identity) to the P. bifurcatus sequences in the public domain. This is a first report of P. bifurcatus nematode species found parasitizing ladybird Harmonia axyridis in Slovenia. The species compromises fecundity of its host and has therefore a potential to be used as a biological control agent to control high abundance of invasive H. axyridis ladybirds.

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“…Parasitic nematodes of the families Allantonematidae and Mermitidae are able to infest ladybird populations (Iperti 1964). For example, Iperti (1964) found a parasitic nematode (later described as Parasitylenchus coccinellinae Iperti & Van Waerebeke (Tylenchida: Allantonematidae) in Iperti and van Waerebeke (1968)) parasitizing the intestine of adults of several ladybirds, particularly Propylea quatuordecimpunctata (L.) (Coleoptera: Coccinellidae) and Oenopia conglobata (L.) (Coleoptera: Coccinellidae). Parasitism rates in P. quatuordecimpunctata reached up to 46% in early autumn.…”

Section: Nematodesmentioning

confidence: 99%

Current and potential management strategies against Harmonia axyridis

Kenis

Roy

Zindel

et al.

From Biological Control to Invasion: The Ladybird Harmonia Axyridis as a Model Species

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This paper reviews the current and potential methods to control the harlequin ladybird, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae), an Asian predatory beetle invasive in Europe and the Americas where it has become a human nuisance, a grape and wine pest and a threat to native biodiversity. Current methods to manage this invasive species include: techniques to mechanically prevent adult beetles from entering buildings in autumn or to remove aggregates of beetles inside buildings, e.g. using various trapping methods; the use of insecticides on buildings or in vineyards to prevent aggregation in houses or on grapes; cultivation practices in vineyards to lower the impact of the ladybird on grape production and wine quality; remedial treatments for wine tainted by the ladybird. Other methods are presently being developed or considered. Semiochemicals could be used as deterrents or as attractants to develop more efficient trapping systems in buildings and open fields. Natural enemies include pathogens, parasitoids, predators and a parasitic mite but few of them show potential as biological control agents. While management methods presently used or under development may eventually solve the problems caused by beetles aggregating in buildings or vineyards, the issue of H. axyridis populations outcompeting native species is much more challenging. Only the sudden adaptation of a native natural enemy or the importation of a natural enemy from the area of origin of the ladybird may M. Kenis (&) Á R.

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Description, biologie et importance d'une nouvelle espèce d'Allantonematidae [Nématode] parasite des coccinelles aphidiphages:Parasitylenchus coccinellinae, n. sp.

Cited by 12 publications

References 6 publications

Parasitylenchus sp. (Tylenchomorpha: Allantonematidae) parasitizing field populations of Harmonia axyridis (Coleoptera: Coccinellidae)

Parasitylenchus sp. (Tylenchomorpha: Allantonematidae) parasitizing field populations of Harmonia axyridis (Coleoptera: Coccinellidae)

First report of nematodes Parasitylenchus bifurcatus Poinar & Steenberg, 2012 parasitizing multicolored Asian lady beetle Harmonia axyridis (Pallas, 1773) in Slovenia

Current and potential management strategies against Harmonia axyridis

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