Life cycle and seasonal dynamics of Cucullanus cirratus O.F. Müller, 1777 (Nematoda, Ascaridida, Seuratoidea, Cucullanidae) in Atlantic cod, Gadus morhua L.
作者： Marianne Køie
DOI: 10.1139/CJZ-78-2-182
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摘要: Mature specimens of Cucullanus cirratus O.F. Muller, 1777 (Cucullanidae) were obtained from the pyloric caeca and intestine Atlantic cod, Gadus morhua L., Danish waters. Eggs embryonate in seawater. Third-stage larvae about 400 µm long, with amphids dereids, hatch egg. Experimental studies indicated that third-stage infective to calanoid cyclopoid copepods sand gobies, Pomatoschistus minutus (Pisces, Gobiidae). Larvae entered haemocoel but did not grow. In intestinal mucosa grew 800 length within 6 months. They encapsulated. infections cod (8-30 cm long) showed free-living are infective, whereas >700 long gobies survived cod. 700-1200 occur stomach mucosa, where they develop moult fourth-stage larvae. The then migrate anteri...
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