Harlequin ladybird Harmonia axyridis Pall. (Coleoptera, Coccinellidae) in Armenia

Kalashian, M.Yu.; Ghrejyan, T. L.; Karagyan, Gayane

doi:10.1134/s207511171704004x

Cited by 6 publications

(4 citation statements)

References 6 publications

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“…axyridis quickly spread and became common across the Black Sea coast of the Caucasus and adjacent regions. By 2018, it has been recorded in Armenia, Georgia and south Russia: Adygea, the Krasnodar territory, the Stavropol territory, the Rostov region, Dagestan, Kabardino-Balkaria and North Ossetia (Fig 1) [13, 14, 15]. The releases of Ha .…”

Section: Introductionmentioning

confidence: 99%

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Coinvasion by the ladybird Harmonia axyridis (Coleoptera: Coccinellidae) and its parasites, Hesperomyces virescens (Ascomycota: Laboulbeniales) and Parasitylenchus bifurcatus (Nematoda: Tylenchida, Allantonematidae), in the Caucasus

et al. 2018

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The study of parasites in recently established populations of invasive species can shed light on the sources of invasion and possible indirect interactions between the alien species and native ones. We studied parasites of the global invader Harmonia axyridis (Coleoptera: Coccinellidae) in the Caucasus. In 2012, the first established population of Ha. axyridis was recorded in the Caucasus in Sochi (south of European Russia, Black Sea coast). By 2018, the ladybird had spread to a vast area: Armenia, Georgia and south Russia (Adygea, the Krasnodar territory, the Stavropol territory, Dagestan, Kabardino-Balkaria and North Ossetia). The examination of 213 adults collected in Sochi in 2018 showed that 53% were infested with Hesperomyces virescens fungi (Ascomycota: Laboulbeniales) and that 8% were infested with Parasitylenchus bifurcatus nematodes (Nematoda: Tylenchida, Allantonematidae). The examined Ha. axyridis specimens were free of the parasitic mite Coccipolipus hippodamiae. An analysis of the phylogenetic relationships of P. bifurcatus based on 18S rDNA confirmed the morphological identification of this species. Hesperomyces virescens and P. bifurcatus were first recorded in the Caucasus and Russia, although they are rather widespread in Europe. This likely indicates that they appeared as a result of coinvasion with their host because the populations of Ha. axyridis, He. virescens and P. bifurcatus in the Caucasus are isolated from the main parts of the ranges of these species in Europe. The nearest localities of Ha. axyridis is on another shore of the Black Sea, and the nearest localities of He. virescens and P. bifurcatus are more than 1000 km from the Caucasus. It is impossible to determine whether the first founders of the Caucasian population were infested with the parasites or whether the parasites were introduced by specimens of Ha. axyridis that arrived later from Europe. Harmonia axyridis was released in the region for pest control, but laboratory cultures are always free of He. virescens and P. bifurcatus. Therefore, the detection of He. virescens and P. bifurcatus indicates that the population of Ha. axyridis in the Caucasus could not have derived exclusively from released specimens. We did not find He. virescens on 400 specimens of 29 other ladybird species collected from the same localities as Ha. axyridis in the Caucasus. No reliable correlation between infestation by He. virescens and that by P. bifurcatus has been found. In addition to these two parasites, an unidentified species of the order Mermithida was recorded. This is the first documented case of Ha. axyridis infestation by a parasitic nematode of this order in nature.

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Section: Introductionmentioning

confidence: 99%

“…axyridis continued at least to 2010 [16]. Therefore, it is unclear whether the population in the Caucasus originated from the released specimens or appeared a result of an expansion of the invasive European range of the species [12, 15, 17].…”

Section: Introductionmentioning

confidence: 99%

Coinvasion by the ladybird Harmonia axyridis (Coleoptera: Coccinellidae) and its parasites, Hesperomyces virescens (Ascomycota: Laboulbeniales) and Parasitylenchus bifurcatus (Nematoda: Tylenchida, Allantonematidae), in the Caucasus

et al. 2018

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“…Then H. axyridis quickly spread and became common all over the Black Sea coast of the Caucasus and in adjacent regions. By 2018 it has been recorded in Armenia, Georgia including Abkhazia, and south Russia: Adygea, Krasnodar territory, Stavropol territory, Rostov region, Dagestan, Kabardino-Balkaria and North Ossetia (Fig 1) [12–14]. The releases of H. axyridis continued at least to 2010 [15].…”

Section: Introductionmentioning

confidence: 99%

“…The releases of H. axyridis continued at least to 2010 [15]. So it was unclear if the population in the Caucasus originated from released specimens or appeared a result of expansion of European invasive range of the species [11, 14, 16].…”

Section: Introductionmentioning

confidence: 99%

Co-invasion of the ladybird Harmonia axyridis and its parasites Hesperomyces virescens fungus and Parasitylenchus bifurcatus nematode to the Caucasus

Spiridonov

et al. 2018

Preprint

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Study of parasites in recently established populations of invasive species can shed lite on sources of invasion and possible indirect interactions of the alien species with native ones. We studied parasites of the global invader Harmonia axyridis (Coleoptera: Coccinellidae) in the Caucasus. In 2012 the first established population of H. axyridis was recorded in the Caucasus in Sochi (south of European Russia, Black sea coast). By 2018 the ladybird has spread to the vast territory: Armenia, Georgia and south Russia: Adygea, Krasnodar territory, Stavropol territory, Dagestan, Kabardino-Balkaria and North Ossetia. Examination of 213 adults collected in Sochi in 2018 have shown that 53% of them are infested with Hesperomyces virescens fungi (Ascomycota: Laboulbeniales) and 8% with Parasitylenchus bifurcatus nematodes (Nematoda: Tylenchida, Allantonematidae). Examined H. axyridis specimens were free of parasitic mite Coccipolipus hippodamiae. An analysis of the phylogenetic relationships of Parasitylenchus bifurcatus based on 18S rDNA confirmed the morphological identification of this species. Hesperomyces virescens and Parasitylenchus bifurcatus are firstly recorded from the Caucasus and Russia, though widespread in Europe. It probably indicates that they appeared as a result of co-invasion with their host. Harmonia axyridis was released in the region for pest control, but laboratory cultures are always free of H. virescens and P. bifurcatus. Therefore, detection of H. virescens and P. bifurcatus indicates that population of H. axyridis in the Caucasus cannot derive exclusively from released specimens. We did not find H. virescens on 400 specimens of 31 other ladybird species collected in the same localities with H. axyridis in the Caucasus. No reliable correlation between infestation by H. virescens and P. bifurcatus has been found. Besides these two parasites an unidentified species of the order Mermithida is recorded. It is the first documented case of H. axyridis infestation by a parasitic nematode of this order in nature.

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Problems of Invasive Plants and Animals

Fayvush,

Aleksanyan,

Arakelyan

et al. 2023

Biodiversity of Armenia

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Harlequin ladybird Harmonia axyridis Pall. (Coleoptera, Coccinellidae) in Armenia

Cited by 6 publications

References 6 publications

Coinvasion by the ladybird Harmonia axyridis (Coleoptera: Coccinellidae) and its parasites, Hesperomyces virescens (Ascomycota: Laboulbeniales) and Parasitylenchus bifurcatus (Nematoda: Tylenchida, Allantonematidae), in the Caucasus

Coinvasion by the ladybird Harmonia axyridis (Coleoptera: Coccinellidae) and its parasites, Hesperomyces virescens (Ascomycota: Laboulbeniales) and Parasitylenchus bifurcatus (Nematoda: Tylenchida, Allantonematidae), in the Caucasus

Co-invasion of the ladybird Harmonia axyridis and its parasites Hesperomyces virescens fungus and Parasitylenchus bifurcatus nematode to the Caucasus

Problems of Invasive Plants and Animals

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