The egg parasitoids ofThaumetopoea pityocampa in the atlas Mountains near Marrakech (Morocco)

Schmidt, Hans‐Werner; Mirchev, P.; Tsankov, G.

doi:10.1007/bf02981091

Cited by 25 publications

(41 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pine processionary moth Thaumetopoea pityocampa is an important defoliator of pine and cedar forests in the southern (Morocco and Algeria) Mediterranean region (Schmidt et al 1997) but few studies have addressed this system despite the important growth loss which results from defoliations (Graf and Mzibri 1994;Sbabdji 1997). The pine recessionary moth differs from most defoliating insects in that it feeds during the winter on mature needles, completing larval development before the growth of the new shoots.…”

Section: Introductionmentioning

confidence: 99%

Effects of Atlas cedar (Cedrus atlantica) defoliation on performance of the pine processionary moth (Thaumetopoea pityocampa)

Sbabdji

Kadik²

2011

J Pest Sci

View full text Add to dashboard Cite

The pine processionary moth (Thaumetopoea pityocampa) is an important defoliating insect of native cedar stands in Northern Africa. In 2002 and 2003, we studied the size of needles of Atlas cedar trees that had been defoliated or not in the previous year, and compared the oviposition preference and larval performance of processionary moth on these two types of trees in cedar stands of central Algeria. Needle length and their number per needle cluster were twice as high on non-defoliated trees than on defoliated trees. There were about ten times fewer egg batches on defoliated than on non-defoliated trees in both study years. Young larvae raised in the laboratory on the foliage of previously defoliated trees were smaller compared to those fed on the foliage from healthy trees. Larval colonies transferred to trees in the field showed two times higher mortality on defoliated trees. It was concluded that the decline in population density in defoliated stands often observed after outbreaks results both from the fact that the female moths avoid laying their eggs on defoliated trees and the lower performance of larvae which later feed on the new-grown needles.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of Atlas cedar (Cedrus atlantica) defoliation on performance of the pine processionary moth (Thaumetopoea pityocampa)

Sbabdji

Kadik²

2011

J Pest Sci

View full text Add to dashboard Cite

show abstract

“…The fi tness of females is mainly dependent on their ability to fi nd hosts, and evaluating their life-history entails examining traits such as the percentage of eggs parasitized and percentage parasitoid emergence, development time, sex ratio and longevity (Bigler et al, 1991;Fournet et al, 2001;Perera & Hemachandra, 2014). The solitary synovigenic egg parasitoid Ooencyrtus pityocampae can be utilized in the biological control of the pine processionary moth due to its biological characteristics, which are as follows: it is successful in parasitizing this host both in the laboratory and the fi eld, has a short development time, long adult longevity, is able to successfully overwinter as a diapausing female and can locate its host by responding to its sex pheromone (Biliotti, 1958;Battisti et al, 1990;Tiberi, 1990;Tsankov et al, 1996Tsankov et al, , 1999Schmidt et al, 1997Schmidt et al, , 1999Mirchev et al, 2004). For this reason, successful mass and laboratory rearing of this parasitoid is very important.…”

Section: Discussionmentioning

confidence: 99%

Tendency and consequences of superparasitism for the parasitoid Ooencyrtus pityocampae (Hymenoptera: Encyrtidae) in parasitizing a new laboratory host, Philosamia ricini (Lepidoptera: Saturniidae)

Tunca¹,

Buradino²,

Colombel³

et al. 2016

Eur. J. Entomol.

View full text Add to dashboard Cite

“…2) were assembled from a literature review and various databases including the entry for processionaria del pino in the Atlas Linguistico Y Etnographico de Castilla-La Mancha [21], [25], [45], [46], [47]. Noting the recent range expansion by T. pityocampa , presumably in response to climate warming [23], [24], we took care to define a geographic dataset describing species presence that corresponded as closely as possible to the climate dataset used for fitting our niche model (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Seasonal dry stress appears to affect T. pityocampa in central Spain and the south of Italy and Greece. Dry stress becomes limiting in northern Africa where the dry stress parameters were fitted to the single known point location at Marrakech in Morocco [47]. Heat stress appears to affect T. pityocampa in parts of southern Spain and at Marrakech.…”

Section: Methodsmentioning

confidence: 99%

Linking Climate Suitability, Spread Rates and Host-Impact When Estimating the Potential Costs of Invasive Pests

et al. 2013

View full text Add to dashboard Cite

Biosecurity agencies need robust bioeconomic tools to help inform policy and allocate scarce management resources. They need to estimate the potential for each invasive alien species (IAS) to create negative impacts, so that relative and absolute comparisons can be made. Using pine processionary moth (Thaumetopoea pityocampa sensu lato) as an example, these needs were met by combining species niche modelling, dispersal modelling, host impact and economic modelling. Within its native range (the Mediterranean Basin and adjacent areas), T. pityocampa causes significant defoliation of pines and serious urticating injuries to humans. Such severe impacts overseas have fuelled concerns about its potential impacts, should it be introduced to New Zealand. A stochastic bioeconomic model was used to estimate the impact of PPM invasion in terms of pine production value lost due to a hypothetical invasion of New Zealand by T. pityocampa. The bioeconomic model combines a semi-mechanistic niche model to develop a climate-related damage function, a climate-related forest growth model, and a stochastic spread model to estimate the present value (PV) of an invasion. Simulated invasions indicate that Thaumetopoea pityocampa could reduce New Zealand’s merchantable and total pine stem volume production by 30%, reducing forest production by between NZ$1,550 M to NZ$2,560 M if left untreated. Where T. pityocampa is controlled using aerial application of an insecticide, projected losses in PV were reduced, but still significant (NZ$30 M to NZ$2,210 M). The PV estimates were more sensitive to the efficacy of the spray program than the potential rate of spread of the moth. Our novel bioeconomic method provides a refined means of estimating potential impacts of invasive alien species, taking into account climatic effects on asset values, the potential for pest impacts, and pest spread rates.

show abstract

The egg parasitoids ofThaumetopoea pityocampa in the atlas Mountains near Marrakech (Morocco)

Cited by 25 publications

References 7 publications

Effects of Atlas cedar (Cedrus atlantica) defoliation on performance of the pine processionary moth (Thaumetopoea pityocampa)

Effects of Atlas cedar (Cedrus atlantica) defoliation on performance of the pine processionary moth (Thaumetopoea pityocampa)

Tendency and consequences of superparasitism for the parasitoid Ooencyrtus pityocampae (Hymenoptera: Encyrtidae) in parasitizing a new laboratory host, Philosamia ricini (Lepidoptera: Saturniidae)

Linking Climate Suitability, Spread Rates and Host-Impact When Estimating the Potential Costs of Invasive Pests

Contact Info

Product

Resources

About