| 英文描述 | Larvae of the sawflies LOPHYROTOMA INTERRUPTA in Australia, ARGE PULLATA in Denmark, and PERREYIA FLAVIPES in Uruguay may fall off trees in large numbers and be toxic to ruminants eating them. Poisoning occurs in a restricted area of Queensland Australia, where the insect's main host tree, EUCALYPTUS MELANOPHOLIA, is common, and in parts of Denmark where the blue-black birch is common. During certain years the larvae defoliate the trees and build up at their bases, where they are eaten with resultant toxicity. The toxin is an octapeptide, and clinical signs appear to be due to an acute hepatic necrosis. Cattle develop a craving for the larvae. Dx confirmed by finding larvae in the carcases of dead animals. This disease has been reproduced. |
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