Overwintering of ladybirds (Coleoptera: Coccinellidae) on Scots pine in Central Europe

Holecová, Milada; Zach, Peter; Hollá, Katarína; Šebestová, Miroslava; Klesniaková, Mária; Šestáková, Anna; Honěk, Alois; Nedvěd, Oldřich; Parák, Michal; Martinková, Zdeňka; Holec, Juraj; Viglášová, Sandra; Brown, Peter; Roy, Helen E.; Kulfan, Ján

doi:10.14411/eje.2018.065

Cited by 30 publications

(20 citation statements)

References 39 publications

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“…Alternatively, the presence of larvae and pupae of ladybirds may be unusual for Passer during winter, as they are normally present from May to August in the wild (Kula & Nedvěd, 2011). This might result in some hesitancy to attack them, due to unfamiliarity, whereas they may be more willing to attack adult ladybirds that overwinter on tree branches (Holecová et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Response of passerine birds and chicks to larvae and pupae of ladybirds

Aslam

Veselý

Nedvěd

2019

Ecological Entomology

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1. Few, if any, experimental tests have demonstrated the anti‐predator protection of the developmental stages of ladybirds (Coleoptera: Coccinellidae) against vertebrates, despite the fact that both the visual appearance of ladybirds and the content of defensive compounds fulfil the definition of an aposematic prey. 2. In this study, avian predators of three species were confronted with fourth‐instar larvae and pupae of the harlequin ladybird (Harmonia axyridis) – a large, conspicuous, and toxic ladybird species. 3. The selected predators differed in their individual experience and attitude to ladybirds. Wild‐caught great tits (Parus major) strongly avoided attacking ladybirds in general, whereas wild‐caught tree sparrows (Passer montanus) were willing to include ladybirds in their diet. Domestic chicks (Gallus gallus domesticus) have never been confronted with ladybirds but usually show avoidance of aposematic signals. In this study, great tits and domestic chicks avoided both developmental stages, but in the case of chicks the avoidance had to be learned over the course of repeated encounters. Sparrow avoidance was significantly lower, with more than one‐third of the prey being attacked and eaten. 4. The protection of both developmental stages of ladybirds is similar to adults, despite substantially different visual appearance.

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Section: Discussionmentioning

confidence: 99%

Response of passerine birds and chicks to larvae and pupae of ladybirds

Aslam

Veselý

Nedvěd

2019

Ecological Entomology

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“…Judging by the seasonal occurrence of H. axyridis on Scots pine in the invaded range (Pendleton andPendleton, 1997-2020;Brown and Roy, 2018;Holecová et al, 2018), we expected the presence of the ladybird in Scots pine forest all year round (prediction 1). As H. axyridis prefers habitats within urban and agricultural landscapes over semi-natural landscapes in the early years of invasion (Brown et al, 2008;Grez et al, 2014), we expected low densities of the ladybird on pine trees (prediction 2).…”

Section: Introductionmentioning

confidence: 98%

“…(Roy et al, 2016;Viglášová et al, 2017;Brown and Roy, 2018;Honěk et al, 2015Honěk et al, , 2019. The ladybird is also found on coniferous trees, specifically Scots pine, Pinus sylvestris L. (Roy et al, 2016;Brown and Roy, 2018;Holecová et al, 2018), Austrian pine, Pinus nigra Arn. (Adriaens et al, 2008) and Norway spruce, Picea abies (L.) Karsten (J. Kulfan, P. Zach, unpublished data).…”

Section: Introductionmentioning

confidence: 99%

“…Despite this, coniferous trees within Europe have not been systematicallly studied throughout the whole year as hosts of H. axyridis. Brown and Roy (2018) surveyed H. axyridis on Scots pine from April to October, and Holecová et al (2018) from October to March.…”

Section: Introductionmentioning

confidence: 99%

“…Over the period April 2013-March 2015 we sampled Scots pine trees to (1) investigate changes in the densities of H. axyridis in Scots pine stands systematically all year round, (2) examine the effects of selected stand characteristics (variables), including tree age and canopy closure, on the densities of H. axyridis, and (3) assess the favourability of Scots pine forest for the reproduction and overwintering of H. axyridis. The study is an extension to the winter surveys of native ladybirds in the presence of H. axyridis from the same forest (Holecová et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Scots pine forest in Central Europe as a habitat for Harmonia axyridis: temporal and spatial patterns in the population of an alien ladybird

et al. 2020

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Understanding of habitat favourability has wide relevance to the invasion biology of alien species. We studied the seasonal dynamics of the alien ladybird Harmonia axyridis (Coleoptera: Coccinellidae) in monoculture Scots pine forest stands in south-west Slovakia, Central Europe, from April 2013 to March 2015. Adult H. axyridis were collected monthly across seven randomly selected pine stands of different ages and canopy closure, from the lower branches of pine trees, and larvae were recorded qualitatively. Adults were recorded all year round, most abundantly in November and least abundantly in February. The relationship between the abundance of H. axyridis and selected forest stand characteristics was modelled using the negative binomial Generalized Additive Model with penalized spline component in month (seasonality) effect, year, canopy closure and age effects and the random effect of forest stand (sample area effect). The abundance of H. axyridis was significantly influenced by the age of stand and seasonality (with month granularity) for both closed and open canopy stands, whereas the effects of canopy closure and sample area were not significant. The bimodal pattern of seasonal dynamics of H. axyridis on Scots pine was common for closed and open canopy stands, with two peaks reflecting the cyclic movement of the species from and to overwintering sites. Harmonia axyridis utilized certain pine stands preferably for foraging during the growing season and certain stands for refuge during winter. The ladybirds were found in highest numbers in the 15 year old closed canopy stand (overwintering site). The occurrence of both adults and larvae in most stands indicated a suitability of Scots pine forest for ladybird breeding. The model of year-round dynamics of H. axyridis has been presented for the first time within the invaded range of the ladybird in Europe.

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Are the ladybugs Cryptolaemus montrouzieri and Exochomus quadripustulatus (Coleoptera: Coccinellidae) candidate predators of Toumeyella parvicornis (Hemiptera: Coccidae)?

Di Sora,

Rossini,

Contarini

et al. 2024

Pest Management Science

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BackgroundToumeyella parvicornis is an alien pest of recent introduction in Italy that infests stone pines (Pinus pinea L.), its main host plant in Europe. Infestations are currently controlled through endotherapic treatments, but the high costs and the long‐term inefficacy highlight the need for alternative control strategies applicable in natural systems as well. An analysis of the effectiveness of autochthonous and naturalized predators is the first step to achieve this goal. This work focused on two candidate predators, Exochomus quadripustulatus and Cryptolaemus montrouzieri (Coleoptera: Coccinellidae), that may potentially control T. parvicornis. The analysis was carried out under laboratory‐controlled and semi‐field conditions.ResultsLaboratory tests were carried out to assess: (i) the predation rate of the ladybugs over different densities of pest preimaginal stages, and (ii) the effect of the presence of heterospecific and conspecific predators on the attractiveness of prey colonies. Semi‐field experimentations were carried out by wrapping infested stone pine twigs with net sleeves and applying one of three treatments: (i) Exochomus quadripustulatus, (ii) Cryptolaemus montrouzieri, and (iii) control containing only the pest population. Both the ladybugs were attracted by T. parvicornis, offered as prey. Exochomus quadripustulatus was more attracted to conspecific and heterospecific ladybugs than Cryptolaemus montrouzieri and responded to prey more quickly.ConclusionsThe results obtained could be useful for planning further experimentations to explore the potential use of these predators in biological control programs that may be applied in infested areas. Besides the use in an urban context, where pesticide use is strongly limited, the release of natural enemies may help safeguard stone pine forests. © 2024 Society of Chemical Industry.

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Overwintering of ladybirds (Coleoptera: Coccinellidae) on Scots pine in Central Europe

Cited by 30 publications

References 39 publications

Response of passerine birds and chicks to larvae and pupae of ladybirds

Response of passerine birds and chicks to larvae and pupae of ladybirds

Scots pine forest in Central Europe as a habitat for Harmonia axyridis: temporal and spatial patterns in the population of an alien ladybird

Are the ladybugs Cryptolaemus montrouzieri and Exochomus quadripustulatus (Coleoptera: Coccinellidae) candidate predators of Toumeyella parvicornis (Hemiptera: Coccidae)?

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