Characteristics of Attack of Coastal Timbers by Pselactus spadix (Herbst) (Col.: Curc.: Cossoninae) and an Investigation of its Life History
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Summary
Pselactus spadix attack of marine timbers was characterised by circular emergence holes 1.48±0.05 mm in diameter and adult tunnels (1.49±0.34 mm) breaking through the wood surface. Larval tunnels measured 0.407–1.892 mm in diameter, initiated from adult tunnels and increased in diameter away from the adult tunnel terminating in frass free pupal chambers (1.6±0.3 mm × 3.5±0.7 mm). Observations of larval tunnel locations indicated oviposition occurred inside the adult tunnels. P. spadix life history was investigated in Scots pine (Pinus sylvestris) heartwood at 22±2 °C and 99±1% r.h. Mean adult longevity was 11.5±6.5 months, with mean post-mating longevity for males (11.7±2.9 months) significantly longer than for females (6.3±1.1 months). Adults of at least 2–3 months old were found mating in galleries, which, with observations of the larval tunnel pattern, indicated P. spadix can complete its life cycle without emerging from wood. Five larval instars were identified by measurement of 1722 head capsule widths and application of Dyar's law. Mean development time from 2nd instar to adult emergence was 70.5±6.9 weeks and pupation took 14.6±5.8 days. Development from 2nd instar to reproductive adult took between 17–20 months, with life cycle approximating 24 months at 22±2 °C and 99±1%
Copyright © 2002 by Walter de Gruyter GmbH & Co. KG
Articles in the same Issue
- Characteristics of Attack of Coastal Timbers by Pselactus spadix (Herbst) (Col.: Curc.: Cossoninae) and an Investigation of its Life History
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- Immuno Electron Microscopic Localization of Peroxidases in the Differentiating Xylem of Populus spp.
- Vanilloyl Acetic Acid as an Unstable Intermediate from β-Hydroxypropiovanillone to Acetovanillone
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- Thick-Target PIXE Analysis of Trace Elements in Wood Incoming to a Pulp Mill
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- Comparing Mechanical Properties of Normal and Compression Wood in Norway Spruce: The Role of Lignin in Compression Parallel to the Grain
- Oxidative Ammonolysis of Technical Lignins. Part 3. Effect of Temperature on the Reaction Rate
- The Erythro/Threo Ratio of β-O-4 Structures as an Important Structural Characteristic of Lignin. Part 2. Changes in Erythro/Threo (E/T) Ratio of β-O-4 Structures during Delignification Reactions
- The Effect of HS- Ions in 1-mol/l NaOH Solutions on the Ion Diffusion in Wood Calculated as the Steady State Diffusion and the Drift Speed
- Industrial Kiln Drying and its Effect on Microstructure, Impregnation and Properties of Scots Pine Timber Impregnated for Above Ground Use. Part 1. Effects of Initial, Final Dryings and Preservative on Impregnation and Timber Quality
- Industrial Kiln Drying and its Effect on Microstructure, Impregnation and Properties of Scots Pine Timber Impregnated for Above Ground Use. Part 2. Effect of Drying on Microstructure and Some Mechanical Properties of Scots Pine Wood
- Study on Gypsum-Bonded Particleboard Reinforced with Jute Fibres
- Literature Reports
Articles in the same Issue
- Characteristics of Attack of Coastal Timbers by Pselactus spadix (Herbst) (Col.: Curc.: Cossoninae) and an Investigation of its Life History
- Bacterial Cellulose Production Using Monosaccharides Derived from Hemicelluloses in Water-Soluble Fraction of Waste Liquor from Atmospheric Acetic Acid Pulping
- Birch (Betula pendula) Wood Discolouration during Drying. Effect of Environmental Factors and Wood Location in the Trunk
- Immuno Electron Microscopic Localization of Peroxidases in the Differentiating Xylem of Populus spp.
- Vanilloyl Acetic Acid as an Unstable Intermediate from β-Hydroxypropiovanillone to Acetovanillone
- Study of Lewis Acid-Base Properties of Wood by Contact Angle Analysis
- Lipophilic Extractives of the Inner and Outer Barks of Eucalyptus globulus
- Thick-Target PIXE Analysis of Trace Elements in Wood Incoming to a Pulp Mill
- Formation of Aliphatic Carboxylic Acids during Soda-AQ Pulping of Kenaf Bark
- Comparing Mechanical Properties of Normal and Compression Wood in Norway Spruce: The Role of Lignin in Compression Parallel to the Grain
- Oxidative Ammonolysis of Technical Lignins. Part 3. Effect of Temperature on the Reaction Rate
- The Erythro/Threo Ratio of β-O-4 Structures as an Important Structural Characteristic of Lignin. Part 2. Changes in Erythro/Threo (E/T) Ratio of β-O-4 Structures during Delignification Reactions
- The Effect of HS- Ions in 1-mol/l NaOH Solutions on the Ion Diffusion in Wood Calculated as the Steady State Diffusion and the Drift Speed
- Industrial Kiln Drying and its Effect on Microstructure, Impregnation and Properties of Scots Pine Timber Impregnated for Above Ground Use. Part 1. Effects of Initial, Final Dryings and Preservative on Impregnation and Timber Quality
- Industrial Kiln Drying and its Effect on Microstructure, Impregnation and Properties of Scots Pine Timber Impregnated for Above Ground Use. Part 2. Effect of Drying on Microstructure and Some Mechanical Properties of Scots Pine Wood
- Study on Gypsum-Bonded Particleboard Reinforced with Jute Fibres
- Literature Reports
