Some observations onParabothrium gadi-pollachii(Rudolphi, 1810) andAbothrium gadivan Beneden 1870 (Cestoda: Pseudophyllidea) including an account of their mode of attachment and of variation in the two species

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Abstract
An account is given of the occurrence ofParabothrium gadi-pollachiiandAbothrium gadiin some members of the Gadidae caught in the north-eastern Atlantic.The external features, musculature, excretory, nervous and genital systems of the two species are described in detail.The adults of both species are characterized by the absence of a typical pseudophyllidean scolex and possess interesting modes of attachment to the intestine and caeca of the host. The variation found in individuals ofA. gadifrom the cod and haddock is discussed.
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