Anisakid parasites of fishes caught on the African shelf

A Kijewska, J Dzido, O Shukhgalter… - Journal of …, 2009 - meridian.allenpress.com
A Kijewska, J Dzido, O Shukhgalter, J Rokicki
Journal of Parasitology, 2009meridian.allenpress.com
Abstract Anisakids of Scomber japonicus, Trachyrincus scabrus, Sardina pilchardus,
Merluccius polli, Trachurus trachurus, and Hoplostethus cadenati from African shelf are
reported. Parasites were extensively studied with respect to their morphology and sequence
analysis of the rDNA fragment (containing internal transcribed spacer [ITS]-1, 5.8 S subunit
and ITS-2); all of them are approximately 1,000 base pairs. Digestion of the amplified region
and its sequencing revealed the presence of a sibling species (A. simplex ss and A …
Abstract
Anisakids of Scomber japonicus, Trachyrincus scabrus, Sardina pilchardus, Merluccius polli, Trachurus trachurus, and Hoplostethus cadenati from African shelf are reported. Parasites were extensively studied with respect to their morphology and sequence analysis of the rDNA fragment (containing internal transcribed spacer [ITS]-1, 5.8S subunit and ITS-2); all of them are approximately 1,000 base pairs. Digestion of the amplified region and its sequencing revealed the presence of a sibling species (A. simplex s.s. and A. pegreffii). Still other sequences represented closely related, but not sibling, species, i.e., Anisakis brevispiculata, A. ziphidarum, and A. physeteris; there were also 2 undescribed anisakid species. These species were temporarily described as Anisakis sp. HC-2005 and Anisakis sp. MP-2005 (found, respectively, in Hoplostethus cadenati and Merluccius polli). The study shows that the parasitic fauna of fishes reflects not only the geographic range of anisakid nematodes but also the feeding behavior of the hosts serving as links in the parasites' life cycles.
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