Responses of Neodiprion sertifer (Hym., Diprionidae) larvae to variation in needle resin acid concentration in Scots pine

Oecologia ◽  
1986 ◽  
Vol 70 (1) ◽  
pp. 77-84 ◽  
Author(s):  
Stig Larsson ◽  
Christer Bj�rkman ◽  
Rolf Gref
Keyword(s):  
Scots Pine ◽  
Acid Concentration ◽  
Resin Acid ◽  
Neodiprion Sertifer

Oviposition and Larval Performance of European Pine Sawfly in Relation to Irrigation, Simulated Acid Rain and Resin Acid Concentration in Scots Pine

Oikos ◽  
1995 ◽  
Vol 74 (2) ◽  
pp. 273 ◽  
Author(s):  
K. Saikkonen ◽  
S. Neuvonen ◽  
P. Kainulainen
Keyword(s):  
Acid Rain ◽  
Scots Pine ◽  
Acid Concentration ◽  
Resin Acid ◽  
Simulated Acid Rain ◽  
Larval Performance ◽  
Pine Sawfly ◽  
European Pine Sawfly

scholarly journals Terpene and resin acid contents in Scots pine stem lesions colonized by the rust fungus Cronartium pini

2021 ◽  
Author(s):  
Juha Kaitera ◽  
Juha Piispanen ◽  
Ulrich Bergmann
Keyword(s):  
Scots Pine ◽  
Rust Fungus ◽  
Resin Acid ◽  
Stem Lesions

scholarly journals Heavy metal concentrations in males and females of three pine diprionids (Hymenoptera)

1990 ◽  
Vol 1 (3) ◽  
pp. 175-179 ◽  
Author(s):  
Kari Heliövaara ◽  
Rauno Väisänen ◽  
Eero Kemppi ◽  
Martin Lodenius
Keyword(s):  
Heavy Metal ◽  
Scots Pine ◽  
Neodiprion Sertifer ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations ◽  
Diprion Pini ◽  
First Instar ◽  
Unpolluted Site ◽  
Males And Females

Heavy metal concentrations (Cu, Fe, Ni, Cd) in the cocoons of three gregarious pine diprionids, Gilpinia socia, Diprion pini and Neodiprion sertifer, were compared between the species and sexes. The sawflies were reared in the laboratory in colonies from the first instar larvae, being fed on Scots pine (Pinus sylvestis) needles collected from a heavily polluted or a relatively unpolluted site. The levels of copper, iron and nickel were two to three times as high in N. sertifer as in the two other species. Cadmium showed bioaccumulation in all three species. In N. sertifur and G. socia reared on polluted needles, the metal concentrations were higher in males than in females.

Neodiprion sertifer defoliation causes long-term systemic changes of oxidative enzyme activities in Scots pine needles

2009 ◽  
Vol 3 (4) ◽  
pp. 209-214
Author(s):  
Una Andersone ◽  
Ineta Samsone ◽  
Gederts Ievinsh
Keyword(s):  
Scots Pine ◽  
Enzyme Activities ◽  
Pine Needles ◽  
Oxidative Enzyme ◽  
Neodiprion Sertifer ◽  
Scots Pine Needles

Anaerobic Detoxification of a Chemi-Thermomechanical Pulp Effluent by Two Acclimating Sludges

1994 ◽  
Vol 29 (4) ◽  
pp. 471-486 ◽  
Author(s):  
Alain Patoine ◽  
Raynald Côté ◽  
Marcel Paquet
Keyword(s):  
Acid Concentration ◽  
Resin Acid ◽  
Granular Sludge ◽  
Growth Cycle ◽  
Bacterial Degradation ◽  
Thermomechanical Pulp ◽  
Batch Reactors ◽  
Toxic Substances ◽  
Growth Cycles ◽  
Major Toxicity

Abstract Detoxification of a chemi-thermomechanical pulp effluent (CTMP) was examined by monitoring toxicity and resin acid concentration during treatment in batch reactors. Two treatments were carried out — one performed with an industrial granular sludge and the other with a municipal anaerobic digester sludge. The two sludges were acclimated to the CTMP effluent by successive 6-day suspended growth cycles on fresh effluent. In both cases, several growth cycles showed resin acid and toxicity increases, probably caused by resin acid desorption from bacterial cell walls to the aqueous phase. Detoxification of the effluent was achieved with both sludges during the last growth cycle. Since measurements were performed on filtered samples, the observed decreases of toxicity and resin acid concentration may be the result of bacterial degradation or of adsorption of toxic substances on particulate matter. Major increases of resin acid were associated with major toxicity increases within one given growth cycle.

Differences in Resin Acid Concentration between Brown-Rot Resistant and Susceptible Scots Pine Heartwood

Holzforschung ◽  
2002 ◽  
Vol 56 (5) ◽  
pp. 479-486 ◽  
Author(s):  
A. M. Harju ◽  
P. Kainulainen ◽  
M. Venäläinen ◽  
M. Tiitta ◽  
H. Viitanen
Keyword(s):  
Moisture Content ◽  
Equilibrium Moisture Content ◽  
Scots Pine ◽  
Abietic Acid ◽  
Resin Acid ◽  
Brown Rot ◽  
Decay Resistance ◽  
Resin Acids ◽  
Hydrophobic Properties

Summary The concentration of individual resin acids and the equilibrium moisture content at a relative humidity of 100% were studied in brown-rot resistant and susceptible Scots pine (Pinus sylvestris L.) heartwood. About 90% of the resin acids in the heartwood were of the abietane type, abietic acid being the most abundant. The concentration of resin acids was higher in the decay-resistant heartwood than in the decay-susceptible heartwood. Resin acids are presumably in part responsible for the decay resistance of Scots pine heartwood. However, no clear relationship was found between the concentration of resin acids and the equilibrium moisture content. The role of resin acids may also be ascribed to mechanisms other than their hydrophobic properties alone. The reasons for the slight differences in moisture content between the decay classes require further study.

Utilization of dry matter and elements by larvae of the sawflies Neodiprion sertifer (Geoff.) and Diprion similis (Hartig) feeding on Scots pine needles

1985 ◽  
Vol 63 (3) ◽  
pp. 506-510 ◽  
Author(s):  
F. Slansky Jr. ◽  
W. H. Fogal
Keyword(s):  
Scots Pine ◽  
Dry Matter ◽  
Nitrogen Utilization ◽  
Neodiprion Sertifer ◽  
Phytophagous Insects ◽  
Diprion Similis ◽  
Late Instar ◽  
Range Of Values ◽  
Phosphorus Intake ◽  
Scots Pine Needles

Consumption and proportions of dry matter and various elements utilized by late-instar larvae of Diprion similis (Hartig) and Neodiprion sertifer (Geoff.) feeding on previous years' needles of Scots pine (Pinus sylvestris L.) were determined gravimetrically and by means of cellulose as an indigestible marker substance. The only discrepancy between the two methods was for phosphorus intake by N. sertifer females. Female larvae of D. similis utilized larger proportions of dry matter, nitrogen, and potassium and less phosphorous than female larvae of N. sertifer; both species utilized similar proportions of calcium and magnesium. Combined male–female groups of N. sertifer larvae utilized larger proportions of dry matter, potassium, and magnesium compared with female larvae. The proportions utilized were ranked as follows: nitrogen (50–59%), phosphorous (22–39%), magnesium (15–29%), calcium (9–15%), and potassium (6–17%). Nonpositive sodium budgets precluded calculation of utilization of this element. The proportions of dry matter utilized by these sawflies are similar to those for 10 species of foliage-consuming Hymenoptera and fall toward the lower end of the range of values for phytophagous insects. Nitrogen utilization figures for these sawflies fall within the range of values reported for insects that consume tree foliage.

Areal distribution of a Neodiprion sertifer (Hym., Diprionidae) outbreak on Scots pine as related to stand condition

Ecography ◽  
1984 ◽  
Vol 7 (2) ◽  
pp. 81-90 ◽  
Author(s):  
Stig Larsson ◽  
Olle Tenow
Keyword(s):  
Scots Pine ◽  
Neodiprion Sertifer ◽  
Areal Distribution
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