The success of pine sawflies in relation to 3-carene and nutrient content of Scots pine foliage

Lyytikäinen, Päivi

doi:10.1016/0378-1127(94)90002-7

Cited by 5 publications

(4 citation statements)

References 19 publications

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“…These results suggest that different mechanisms underlie the noxious effect of the foliage. The analysis of foliage conducted here confirmed the important differences in composition among Scots pine clones and that Scots pine with 3‐carene‐rich foliage enables a low survival rate of D. pini larvae, in contrast with Lyytikai¨nen 's results (L yytikai¨nen , 1994), although all the clones tested in our study belong to Lyytikäinen 's intermediate group. The clones used in our study were from three different places in Europe and T obolski and H anover (1971) revealed that 3‐carene richness of Pinus sylvestris foliage varies with provenance.…”

Section: Discussionsupporting

confidence: 80%

“…High larval survival of D. pini is correlated with the presence of taxifolin, a phenolic compound (A uger et al., 1991). L yytikai¨nen , 1994) found no significant relation between 3‐carene content and the development of N.sertifer , D. pini and Gilpinia pallida (Klug) (Hym., Diprionidae). She nonetheless categorized Scots pine clones according to the percentage of 3‐carene and not according to its levels in foliage.…”

Section: Introductionmentioning

confidence: 99%

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Variation in the suitability of Pinus sylvestris to feeding by two defoliators, Diprion pini (Hym., Diprionidae) and Graellsia isabellae galliaegloria (Lep., Attacidae)

Barre¹,

Goussard²,

Geri³

2003

J Applied Entomology

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Feeding bioassays were conducted on several Pinus sylvestris clones to establish if there were any differences in suitability for two pine defoliators: the sawfly Diprion pini L. (Hym., Diprionidae), which causes considerable damage in Europe, and the rare and protected moth Graellsia isabellae galliaegloria Oberthür (Lep., Attacidae). There were significant differences in survival, weight, sex‐ratio and female fecundity of D. pini on Scots pine clones. However, sawfly survival appeared to be the most stable variable in time and three clone categories were revealed by conducting feeding bioassays on 16 clones. The survival of G. isabellae galliaegloria until the formation of the chrysalis was significantly different among clones. It varied from 35 to 75% but no clear clone category was distinguished. The two clone classifications according to insect survival showed differences. In particular, one unsuitable clone for D. pini development appeared to be favourable to moth development. The 3‐carene richness of foliage was significantly linked with sawfly survival and the monoterpene composition of foliage was not linked with G. isabellae galliaegloria survival.

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Section: Discussionsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Variation in the suitability of Pinus sylvestris to feeding by two defoliators, Diprion pini (Hym., Diprionidae) and Graellsia isabellae galliaegloria (Lep., Attacidae)

Barre¹,

Goussard²,

Geri³

2003

J Applied Entomology

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“…of 1 larvae =0.0323 g) measured on the 8th day of larval feeding on the Scots pine saplings. Approximately third-instar N. sertifer larvae were weighed in groups as described by Lyytikaïnen 45.…”

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confidence: 99%

Needle Removal by Pine Sawfly Larvae Increases Branch-Level VOC Emissions and Reduces Below-Ground Emissions of Scots Pine

Ghimire

Markkanen

Kivimäenpää

et al. 2013

Environ. Sci. Technol.

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Climate warming is expected to increase the frequency of insect outbreaks in Boreal conifer forests. We evaluated how needle removal by the larvae of two diprionid sawfly species affects the composition and quantity of VOC emissions from Pinus sylvestris L. saplings. Feeding damage significantly increased the rate of localized VOC emissions from the damaged branch. The emissions of total monoterpenes (MTs) were dominating (96-98% of total VOCs) and increased by14-fold in Neodiprion sertifer-damaged branches and by 16-fold in Diprion pini-damaged branches compared to intact branches. Emissions of δ-3-carene, α-pinene, sabinene, and β-phellandrene were most responsive. Feeding damage by N. sertifer larvae increased the emission rates of total sesquiterpenes by 7-fold (4% of total VOCs) and total green leaf volatiles by 13-fold (<1% of total VOCs). The VOC emissions from N. sertifer larvae constituted nearly 25% of the total branch emissions. N. sertifer feeding in the lower branches induced 4-fold increase in MT emissions in the top crown. Defoliation of Scots pine by D. pini significantly reduced the below-ground emissions of total MTs by approximately 80%. We conclude that defoliators could significantly increase total VOC emissions from the Scots pine canopy including MT emissions from resin storing sawfly larvae.

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“…For each experimental pine, we collected 20 needles of the previous year from the branch that hosted the sheltered groups after the sawfly larvae had spun cocoons. The collected needles reflect the food quality that the larvae experienced as the response of pine to sawfly defoliation has not been found to induce an immediate or delayed induced response (Niemelä et al ., 1991; Lyytikäinen, 1994; McMillin & Wagner, 1997; Lyytikäinen‐Saarenmaa, 1999; Nordkvist et al ., 2019). The collected needles were immediately folded in aluminium foil and placed in a plastic box containing dry ice to avoid any resin acid degradation.…”

Section: Methodsmentioning

confidence: 99%

Effect of forest stand type on host plant quality and direct and indirect effects on pine sawfly performance

Bellone

Björkman

Schmidt

et al. 2020

Agri and Forest Entomology

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1 Observed lower levels of herbivory in mixed compared with monoculture stands have been hypothesized to depend on top-down forces, through higher predation pressure by natural enemies or through bottom-up mechanisms through plant quality effects on herbivore performance. 2 In this study, we compared the performance measured as host plant induced mortality, cocoon weight, and predation mortality of the European pine sawfly Neodiprion sertifer (Geoffroy) (Hymenoptera, Diprionidae) in mixed and monoculture forest stands. 3 We did not observe a difference in host plant induced mortality, cocoon weight, or predation mortality between mixed and monoculture forest stands. We did find an effect of local conditions around each experimental tree on pine sawfly performance. For example, the nitrogen content of pine needles is negatively affected by the proportion of pine around the experimental tree, which in turn increases the survival of sawfly larvae. 4 The results suggest that local conditions around individual trees are more important for the performance of the European pine sawfly than stand type, i.e. mixed or monoculture plant stands. 5 We conclude that the ongoing trend for diversification within commercial forestry calls for more research where the effects of both bottom-up and top-down effects are studied at several spatial scales.

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The success of pine sawflies in relation to 3-carene and nutrient content of Scots pine foliage

Cited by 5 publications

References 19 publications

Variation in the suitability of Pinus sylvestris to feeding by two defoliators, Diprion pini (Hym., Diprionidae) and Graellsia isabellae galliaegloria (Lep., Attacidae)

Variation in the suitability of Pinus sylvestris to feeding by two defoliators, Diprion pini (Hym., Diprionidae) and Graellsia isabellae galliaegloria (Lep., Attacidae)

Needle Removal by Pine Sawfly Larvae Increases Branch-Level VOC Emissions and Reduces Below-Ground Emissions of Scots Pine

Effect of forest stand type on host plant quality and direct and indirect effects on pine sawfly performance

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