The influence of haemocyte number on the resistance of the freshwater crayfish, Pacifastacus leniusculus Dana, to the parasitic fungus Aphanomyces astaci
作者： M. PERSSON , L. CERENIUS , K. SODERHALL
DOI: 10.1111/J.1365-2761.1987.TB01098.X
关键词: Crayfish plague 、 Zymosan 、 Aphanomyces 、 Hypha 、 Crayfish 、 Pacifastacus 、 Microbiology 、 Cuticle 、 Biology 、 Fungus
摘要: . The number of circulating haemocytes in crayfish, Pacifastacus leniusculus Dana, was reduced after injection yeast cell walls (Zymosan) into the animals. Crayfish harbouring parasitic fungus A. astaci as a ‘latent’ infection melanized areas cuticle died due to unrestricted growth unmelanized hyphae when they were injected with Zymosan. β–1,3–gIucan laminaran, introduced haemocoel P. cuticle, also caused decrease total haemocyte counts (THC), but these animals survived treatment and no A, found. recovery THC found be more rapid laminaran than Zymosan injection, which could explain why treated crayfish retained their resistance combat cuticle. importance defence well-being is discussed.
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