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Ampelisca dalmatina and A. provincialis (Amphipoda: Gammaridea) in Irish waters

Published online by Cambridge University Press:  11 May 2009

A.A. Myers
Affiliation:
Department of Zoology, University College Cork, Republic of Ireland
D. McGrath
Affiliation:
Zoology Department, The Martin Ryan Marine Science Institute, University College Galwayand Department of Life Sciences, Regional Technical College, Galway, Republic of Ireland

Abstract

The distribution of Ampelisca aequicornis Bruzelius is said to extend from Norway southwards to the Gulf of Guinea (Dauvin & Bellan-Santini, 1988) and it has been recorded from British and Irish waters (Norman, 1900; Metzger, 1875). There do not appear to be any recent records. A number of specimens in The Natural History Museum, London (NHM) collections, labelled Ampelisca aequicornis, were examined by Lincoln (1979) who reported that only Galway Bay material was referable to A. aequicornis or “at least to the aequicornis complex”. This we can confirm from our own study of the NHM material. We have re-examined the Galway Bay specimen referred to by Lincoln (1979) and find it to differ from A. aequicornis in several ways and to be closest to A. dalmatina Karaman, previously known only from the Mediterranean and the Portuguese coast (Marques & Bellan-Santini, 1991, 1993). It also closely resembles A. pusilla Sars and A. ambylops Sars, but those two species lack cuticular eyes. Ampelisca aequicornis is therefore not confirmed to occur in the waters of the British Isles.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1994

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