First record of Ogmogaster antarctica Johnston, 1931 (Trematoda: Notocotylidae) on the edge of the Arctic ocean

On the 27th of November 2021, a male fin whale Balaenoptera physalus (Linnaeus), measuring 17.92 m in length was reported stranded dead on the Icelandic shore (N63.86°, W21.37°). As geographical and meteorological conditions allowed, a necropsy was performed onsite including measurements and collection of samples from the organs. Here, we report the first evidence of the presence of Ogmogaster antarctica Johnston, 1931, collected from the intestine of the stranded fin whale, off the coast of Iceland, on the edge of the Arctic Ocean. Additionally, we provide a new set of morphological and molecular characterization associating morphometric description and genetic sequence. This study sheds new light on the distribution of the digeneans of the genus Ogmogaster , Jägerskiöld 1891, especially O. antarctica , and adds valuable information to the biodiversity of parasites species in potential hosts of the sub-Arctic ocean.