A study on the emergence sequence of pupal parasitoids of the pine processionary moth,<i>Thaumetopoea pityocampa</i>

Bonsignore, Carmelo Peter; Manti, Francesco; Castiglione, Elvira; Vacante, V.

doi:10.1080/09583157.2011.566322

Cited by 4 publications

(14 citation statements)

References 12 publications

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“…are recognized parasitoids of Lepidoptera and include C. cunae and C. amplue for Hyphantria cunea (Drury, 1773), (Boriani, 1994;Zhong-Qi & Baur, 2004). Adult ichneumonid C. rudis were found to emerge 1 year after pupal parasitism, confirming results from similar studies reported elsewhere (Tarasco, 1995;Bonsignore et al, 2011). In the current study, C. rudis from pupae in 2010 emerged in May 2011, corroborating the presence of adults in the field during May and June (Tarasco, 1995 for South Italy).…”

Section: Discussionsupporting

confidence: 91%

“…The hypogeic pupal period is variable in relation to the climate (Battisti et al , 2000; Pimentel et al , 2010). Prolonged yearly diapause is known for pupae of this species, but does not always occur (Pimentel et al , 2010; Bonsignore et al , 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Although there is no clear evidence for the impact of parasitoids on PPM populations, several studies have suggested that parasitoids cause significant mortality of this species (Buxton, 1990; Tarasco, 1995; Schmidt et al , 1999; Battisti et al , 2000). During their development, PPMs are susceptible to attack by a range of hymenopteran and dipteran parasitoid species, including parasitoids of egg, larvae and pupae (Biliotti, 1955; Du Merle, 1969; Tsankov et al , 1996; Schmidt et al , 1999; Lòpez-Sebastián et al , 2007; Bonsignore et al ., 2011). PPMs are also attacked by invertebrate predators, including ants, beetles and spiders, as well as by vertebrates, such as birds, shrews and voles, and also by pathogens (Way et al ., 1999; Battisti et al , 2000; Er et al ., 2007; Ince et al , 2008; Hatice et al ., 2009; Barbaro & Battisti, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Interactions between pupae of the pine processionary moth (Thaumetopoea pityocampa) and parasitoids in aPinusforest

Bonsignore

Manti

Castiglione

2015

Bull. Entomol. Res.

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Parasitoids are significant enemies of many economically important insects and there is some evidence to suggest that their actions have a role in terminating the outbreaks of forest Lepidoptera populations. In this study, we examined the impact of parasitoids on the pupae of the pine processionary moth, and highlighted the presence of several parasitoid species for this developmental stage. A higher rate of parasitism was found when the pupal density in the soil was reduced, but the rate of parasitism was not influenced by pupal morphological traits or by the presence or absence of a cocoon around a pupa. Of the external factors examined, a delay in the time of descent of larvae from the trees had a positive effect on the level of parasitism. Observational data indicated that dipteran and hymenopteran were the most abundant parasitoids to emerge from moth pupae. Our study highlights the complexity of the parasitoid-host dynamics, and stresses the importance of carefully determining environmental effects on host-parasitoid relations.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Interactions between pupae of the pine processionary moth (Thaumetopoea pityocampa) and parasitoids in aPinusforest

Bonsignore

Manti

Castiglione

2015

Bull. Entomol. Res.

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“…Thus, clearings within forests are suitable sites for PPMs as they create edges and open areas where their processioning larvae can pupate in sunexposed soils. Pine forests with suitable pupation sites for supporting large aggregations of PPM occur in southern Italy (Bonsignore et al, 2011(Bonsignore et al, , 2015.…”

Section: Experimental Sitementioning

confidence: 99%

“…Pine processionary moth pupae from each of the marked colonies were extracted from the soil starting 1.5 months after the larvae buried themselves. The pupae collected may have included individuals in diapause from previous years, but this was considered a minor problem because very few individuals were reported entering diapause in a previous study at these pupation sites (Bonsignore et al, 2011). The pupae were grouped according to the colony they were in and taken to a laboratory where the numbers and presence/absence of cocoons were recorded.…”

Section: Survey Of Pupation Sites and Pupae Collectionmentioning

confidence: 99%

Pupal traits and adult emergence in the pine processionary moth Thaumetopoea pityocampa (Lepidoptera: Notodontidae) are affected by pupal density

Bonsignore¹,

Manti²,

Castiglione³

et al. 2019

Eur. J. Entomol.

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The expectation is that the phenology of an herbivore is infl uenced by abiotic factors and its own population density during development. In this study, we investigated how the pupal density affected the pupal traits and emergence of Thaumetopoea pityocampa moths over a period of 3 years in two clearings in a pine forest. The pupae were larger in years when the pupal density was high and in the clearing exposed to less solar radiation. There was no relationship between the time of pupation and pupal size. Large pupae were positively correlated with an early emergence of adult moths and a longer period of adult emergence. Up to 13.9% of the pupae developed without cocoons, especially in years when they were abundant, but this did not affect the emergence of the moths. Incidence of pupal diapause was density-dependent and only occurred at a low level in dense populations. Overall, our results indicate that gregariousness confers important fi tness-related advantages in this species.

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Egg parasitoid complex of the pine processionary moth in NW Italy

Ferracini,

Pogolotti,

Vercelli

et al. 2023

Biocontrol Science and Technology

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A study on the emergence sequence of pupal parasitoids of the pine processionary moth,Thaumetopoea pityocampa

Cited by 4 publications

References 12 publications

Interactions between pupae of the pine processionary moth (Thaumetopoea pityocampa) and parasitoids in aPinusforest

Interactions between pupae of the pine processionary moth (Thaumetopoea pityocampa) and parasitoids in aPinusforest

Pupal traits and adult emergence in the pine processionary moth Thaumetopoea pityocampa (Lepidoptera: Notodontidae) are affected by pupal density

Egg parasitoid complex of the pine processionary moth in NW Italy

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