Nebalia reboredae Moreira and Urgorri, 2009

McCormack, Edward & Ashelby and David McGrath, Christopher W., 2016, A review of the Leptostraca of the British Isles with discussion of the genus Sarsinebalia Dahl, Nauplius (e 2016006) 24, pp. 1-19 : 6-7

Nebalia reboredae Moreira and Urgorri, 2009 in Moreira et al., 2009a

Material examined. Ireland. 2♀, Deenish, Kenmare

Bay, Co. Kerry, 51°44.364’N 10°12.8189’W, 23.2 m, on medium sand with shell gravel, 13.ix.2012 ( NMINH: 2016.1.3, 2♀). 3♂, 1♀, Aran Island , Co. Donegal, 54°58.2359’N 008°31.0488’W, 5.7 m, sandy gravel, 1.ix.2010 . 2♀, 1 juvenile, Sound of Aran , Co. Donegal, 54°57.4439’N 008°28.6248’W, 5.5 m, gravelly sand, 1.ix.2010 . 3♀, 1 juvenile, Sound of Aran , 54°56.562’N 008°28.2629’W, 9.9 m, gravelly sand, 1 September 2010 . 12 specimens, Lough Foyle, Co. Donegal, 55°11.510’N 007°00.765’W, 9.5 m, sand with shell, 29.iii.2012. 1 specimen, Lough Foyle, Co. Donegal, 55°11.510’N 007°00.765’W, 15.6 m, sand with shell, 26.vi.2013. 2 juveniles, Kingstown Bay , Co. Galway, 53° 30.9829’N 10°8.22’W, 9.3 m, gravelly sand, 16.x.2010 . 3♀, Valentia Island , Co. Kerry, 51° 52.5599’N 10° 24.444’W, 40 m, gravelly sand. Northern Ireland . 1♀, NE of Skernaghan Pt , Larne, Co. Antrim, dredge, 54°51.6869’N 005°45.384’W, 25 m, gravel and shell, 15.iv.2010 . 5 specimens, Larne Lough, 54°50.352’N 005°47.802’W, 5.7 m, muddy sand, 14.iii.2013 . 2 specimens, Carlingford Lough, 54°03.271’N 006°09.058’W, 7 m, muddy sand with shell, 05.vii.2013. Scotland. 1 specimen, Oban Bay , 56°24.862’N 005°29.708’W, 37.6 m, gravelly shelly mud, 09.xii.2010 . 19 specimens, Kirkwall Bay , 59°02.014’N 002°59.722’W, 13 m, 25.v.2014 . 2 specimens, Kirkwall Bay , 59°01.281’N 002°58.329’W, 12 m, 25.v.2014 . 1 specimen, St. Abbs , 56°04.500’N 002°05.460’W, 55 m, 02.vi.1986 [specimen previously cited by O’Reilly et al. (2001) as N. herbstii ]. 1 specimen, Ayr Bay , 55°28.570’N 002°41.000’W, 17 m, 08.ix.1989 . 1 specimen, Shuna Island , Loch Linnhe, 56°35.570’N 005°22.750’W, 01.vi.1992 . 1 specimen, Bring Head, Hoy, Orkney, 58°54.050’N 003°16.191’W, 20 m, sand, 17.x11.2012 . 1 specimen, St. Margaret’s Hope , Orkney, 15.v.2015 . 1 specimen, south-west Scotland, 55°16.121’N 004°51.617’W, 10.6 m, poorly sorted coarse sand, 11.vii.2015. 3 specimens, Moray Firth ( Hilton of Cadboll Water Body ), 57 o 38.09’N 003 o 57.49’ W, 19 m, 23.vi.2015 . Wales. 1 specimen, Cardigan Bay , 52°15.054’N 004°22.582’W, 21.7 m, 2.vii.2014 . England. 1 specimen, Plymouth Sound, 50°19.933’N 004°09.200’W, 9.6 m, coarse sand, 30.iii.2011 . 1 specimen, eastern English Channel , 50°27.845’N 000°32.794’E, 43.7 m, sandy gravel, 2.viii.2014 . 1 specimen, eastern English Channel , 50°23.765’N 000°45.489’E, 39.8 m, sandy gravel, 1.viii.2014 . 1 specimen, eastern English Channel , 50°26.977’N 000°36.590’E, 46.8 m, gravelly sand, 2.x.2014 . 1 specimen, eastern English Channel , 50°21.401’N 000°18.366’E, 43.9 m, sandy gravel, 30.vii.2014 . 1 specimen, Cromer Shoals, 52°59.807’N 001°28.649’E, 11.6 m, sand, 12.ix.2014. 1 specimen, Cromer Shoals, 53°04.062’N 001°27.237’E, 10.7 m, mixed sediments, 12.ix.2014. 1 specimen, Liverpool Bay, 53°29.165’N 003°30.429’W, 21.9 m,gravelly sand, 29.x.2014 . 2 specimens, Liverpool Bay, 53°26.970’N 003°23.971’W, 16.0 m, gravelly sand, 30.x.2014 . 4 specimens, Liverpool Bay, 53°26.038’N 003°24.593’W, 13.8 m, sandy gravel, 30.x.2014 . North Sea . 5 specimens, Osprey Field, 61°19.530’N 004°32.601’E, 159.9 m, muddy sand, 6.xii.2008. 1 specimen, Dunlin Field, 61°18.115’N 001°32.060’E, 155 m, muddy sand, 11.xi.2009. 1 specimen, Dunlin Field, 61°13.141’N 001°30.927’E, 148.1 m, muddy sand, 08.xi.2009. 2 specimens, Clipper Field, 53°23.826’N 001°47.205’E, 25.1 m, sandy gravel, 27.xii.2008. 2 specimens, Clipper Field, 53°24.179’N 001°46.431’E, 24. m, sandy gravel, 27.xii.2008 ( OUMNH. ZC.2016-01-009, 2 specimens) . 2 specimens, Dunbar Field, 60°37.700’N 001°39.200’E, 145 m. 6 specimens, Clipper Field, 53°21.452’N 001°44.148’E, 29.9 m, muddy sand, 2.ii.2009. 1 specimen, Juliet Field, 53°35.444’N 000°46.261’E, 33.3 m, sandy gravel, 10.ix.2009.

British and Irish Distribution. West and north-west of Ireland (Co. Kerry, Co. Galway, Co. Donegal) and east of Northern Ireland (Co. Antrim) ( Fig. 1C ).

Distribution beyond the study area. Ría de Ferrol, Galicia, Spain (type locality). Based on the previously known distribution and the present records it seems likely that this species is also present along the west coast of France and continental southern North Sea coasts but this requires confirmation.

Ecology. Medium sand at depth of 6.4 m, 1.4 % TOM ( Moreira et al., 2009a). Gravelly sand at depths of 5.5–40 m, 0.69–3.1% TOM (present study). Nebalia reboredae appears to be the European species of Nebalia which shows a greater affinity for sandy sediments.

Remarks. The specimens examined agree closely with the description and figures given by Moreira et al. (2009a). Contrary to Dahl’s statement that Nebalia herbstii is the dominant Nebalia species in British waters, N. reboredae was the most commonly recorded in this study.

Figures

Figure 1. Distribution of Leptostraca in the British Isles:(A) Nebalia strausi Risso, 1826; (B) Nebalia kocatasi Moreira, Koçak and Katagan, 2007; (C) Nebalia reboredae Moreira and Urgorri, 2009 in Moreira et al., 2009a; (D) Nebalia herbstii Leach, 1814.