A laboratory bioassay method for testing preservatives against the marine borers Limnoria tripunctata, L. quadripunctata (Crustacea) and Lyrodus pedicellatus (Mollusca)

IRG/WP 4159

L J Cookson

A laboratory culture and bioassay method is described for the marine borers Limnoria tripunctata, Limnoria quadripunctata, and Lyrodus pedicellatus. The methods were tested in a bioassay using established marine preservatives. The attack produced on blocks treated with CCA or creosote in some ways paralleled the attack found in the sea. Limnoria tripunctata attacked treated and untreated pine blocks more readily than eucalypt blocks, a difference that was much less apparent in the other species. Limnoria tripunctata was more active on blocks placed on the floor of aquaria, than on blocks suspended in the seawater, or those placed with limnoriids in separate dishes.


Keywords: BIOASSAY; CCA; HTC; CREOSOTE; LIMNORIA TRIPUNCTATA; LIMNORIA QUADRIPUNCTATA; LYRODUS PEDICELLATUS; MAINTENANCE; MARINE BORERS; EUCALYPTUS REGNANS; PINUS RADIATA

Conference: 90-05-13/18 Rotorua, New Zealand


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