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  • 1
    Publication Date: 2019-10-04
    Description: Hyperiidean amphipods are a major prey for fish and seabirds. In the Southern Ocean, they are particularly abundant, with distributions ranging from the Polar Frontal Zone to Antarctic shelf waters. The species Hyperiella dilatata has previously been reported to show a peculiar anti-predatory behaviour: It captures chemically protected, gymnosome pteropods in the water column and carries them on its dorsum, like a backpack. We report this association at four oceanic sampling sites between latitudes 45° and 71° S. Molecular barcodes of both hosts and pteropods are provided and compared with those of other hyperiidean and pteropod specimens. Morphological identifications as well as molecular analyses show a so far undocumented association of Hyperiella antarctica with the pteropod Spongiobranchaea australis in the Polar Frontal Zone (Lazarev Sea). H. dilatata carried Clione limacina antarctica specimens in the Weddell Sea, as recorded previously for the Ross Sea. Lengths of the abducted pteropods varied between 1 and 5 mm, with the biggest pteropod measuring more than half the host’s size. One of the abducting amphipods was a female carrying eggs. The formation of such tandem is known to be very efficient as protection from visually hunting icefish in the crystal-clear coastal waters around the Antarctic continent; however, in the open ocean, this behaviour was so far undocumented. Here, we develop hypotheses on its origin and function.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2024-02-24
    Description: We provide an overview of the World Amphipoda Database (WAD), a global species \ndatabase that is part of the World Register of Marine Species (WoRMS). Launched in 2013, the database \ncontains entries for over 10,500 accepted species names. Edited currently by 31 amphipod taxonomists, \nfollowing WoRMS priorities, the WAD has at least one editor per major group. All accepted species \nare checked by the editors, as is the authorship available for all of the names. The higher classification \nis documented for every species and a type species is recorded for every genus name. This constitutes \nfive of the 13 priorities for completion, set by WoRMS. In 2015, five LifeWatch grants were allocated \nfor WAD activities. These included a general training workshop in 2016, together with data input for \nthe superfamily Lysianassoidea and for a number of non-marine groups. Philanthropy grants in 2019 \nand 2021 covered more important gaps across the whole group. Further work remains to complete the \nlinking of unaccepted names, original descriptions, and environmental information. Once these tasks are \ncompleted, the database will be considered complete for 8 of the 13 priorities, and efforts will continue \nto input new taxa annually and focus on the remaining priorities, particularly the input of type localities. \nWe give an overview of the current status of the order Amphipoda, providing counts of the number of \ngenera and species within each family belonging to the six suborders currently recognized.
    Keywords: Amphipoda ; Crustacea ; databases ; global ; biodiversity ; nomenclature
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
    Location Call Number Limitation Availability
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