PATHOLOGY OF 5 SPECIES OF GYRODACTYLUS NORDMANN, 1832 (MONOGENEA)
PATHOLOGY OF 5 SPECIES OF GYRODACTYLUS NORDMANN, 1832 (MONOGENEA)
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DOI:
10.1139/z84-156
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发表时间:
1984-01-01
影响因子:
1.4
通讯作者:
ODENSE, PH
中科院分区:
文献类型:
--
作者:
CONE, DK;ODENSE, PH
Attachment-site pathology of the ectoparasites G. adspersi Cone and Wiles, 1983 on Tautogolabrus adspersus, G. avalonia Hanek and Threlfall, 1969 on Gasterosteus aculeatus, Gyrodactylus bullatarudis Turnbull, 1956 on Poecilia reticulata, Gyrodactylus sp. on Carassius auratus and G. salmonis (Yin and Sproston, 1948) on Salmo gairdneri was examined using optical microscopy and scanning electron microscopy. In the 1st 4 spp., the disc-shaped haptor attached itself to the host skin surface by means of blade tips of 16 peripherally located marginal hooks, with the 2 ventrally located hamulus blades compressing the underlying epithelium into a small depression. Tissue damage from attachment and feeding was minimal. G. salmonis lodged its marginal hook sickles deep into the host epidermis and appeared to cause extensive fin damage and skin discoloration. There was little evidence of bacterial involvement in the wounds, but bacterial microcolonies were observed on the body surface and haptor of G. salmonis. The latter results are discussed in relation to our understanding of gyrodactyliasis.