Laboratory screening of tropical hardwoods for natural resistance to the marine borer Limnoria quadripunctata: The role of leachable and non-leachable factors
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Luisa M.S. Borges
Abstract
The marine borer Limnoria ingests essential wood components including the extractives the wood contains. Some extractives may confer borer resistance on certain timbers. Feeding by Limnoria correlates with the rate of production of faecal pellets. The faecal pellet production rate and mortality on over 40 test timbers and non-resistant Pinus sylvestris sapwood was measured over 15 days. By placing animals in leachate from wood and with wood in flowing seawater, the effects of leaching-resistant and water-soluble compounds were measured. Some previously untested timbers affected Limnoria as strongly as timbers reputed for durability in marine construction. Wood of Minquartia guianensis, Nectandra rubra and Bruguiera gymnorhiza caused high mortality, and pellet production on them was less than 10% of production on P. sylvestris. Suppressed feeding rates, but with no heavy mortality, were observed on known durable species such as Chlorocardium rodiei, Dicorynia guianensis, Lophira alata and Nauclea trillesii, but also on Cynometra ananta, Distemonanthus benthamianus, Enterolobium schomburgkii, Goupia glabra, Hymenaea courabil, Mammea africana, Shorea sp. and Sacoglottis guianensis. Leachate from B. gymnorhiza, G. glabra, H. coubaril, N. rubra and Shorea sp. caused high mortality. These short-term bioassays thus detected clear differences between wood species in their resistance to Limnoria that matched findings from long-term marine trials, while indicating new species worthy of detailed testing.
©2008 by Walter de Gruyter Berlin New York
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- Characteristic properties of embedding strength for the nailing of the gonfolo rose (Qualea rosea Aubl.)
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- Laboratory screening of tropical hardwoods for natural resistance to the marine borer Limnoria quadripunctata: The role of leachable and non-leachable factors
- Decay resistance of wood treated with amino-silicone compounds
- Hydrothermal treatment of mixed preservative-treated wood waste
- Variation of tracheid length within annual rings of Scots pine and Norway spruce
Articles in the same Issue
- Meetings
- Evaluation of Eucalyptus grandis Hill ex Maiden biopulping with Ceriporiopsis subvermispora under non-aseptic conditions
- Paper dry strength improvement by xyloglucan addition: Wet-end application, spray coating and synergism with borate
- A new and facile method for isolation of lignin from wood based on complete wood dissolution
- Isolation and characterization of lignins from Eucalyptus grandis Hill ex Maiden and Eucalyptus globulus Labill. by enzymatic mild acidolysis (EMAL)
- Fractionation and characterization of xylan rich extracts from birch
- Polyoxometalate (POM) oxidation of lignin model compounds
- Pyrolytic cleavage mechanisms of lignin-ether linkages: A study on p-substituted dimers and trimers
- Polysaccharide degradation in waterlogged oak wood from the ancient warship Vasa
- Degradation of polyethylene glycol and hemicellulose in the Vasa
- Selection criteria of Eucalyptus globulus Labill. for production of chemithermomechanical pulps (CTMP)
- The effect of (induced) dislocations on the tensile properties of individual Norway spruce fibres
- Mode I and Mode II fracture toughness of densified Sitka spruce fabricated in an airtight atmosphere with high-temperature steam
- Characteristic properties of embedding strength for the nailing of the gonfolo rose (Qualea rosea Aubl.)
- Adhesive penetration of wood cell walls investigated by scanning thermal microscopy (SThM)
- Laboratory screening of tropical hardwoods for natural resistance to the marine borer Limnoria quadripunctata: The role of leachable and non-leachable factors
- Decay resistance of wood treated with amino-silicone compounds
- Hydrothermal treatment of mixed preservative-treated wood waste
- Variation of tracheid length within annual rings of Scots pine and Norway spruce
