International Council for the Exploration of the Sea
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Roundnose grenadier (Coryphaenoides rupestris) in the Northeast Atlantic

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posted on 2022-03-09, 12:06 authored by ICESICES

The scientific basis for stock identification is uncertain. The Wyville–Thomson Ridge and fjord sills, between Western Scotland and the edge of the North Sea slope, could be natural physical boundaries. It is therefore considered that the northern  North  Sea  and  the  Norwegian  Deep  could  represent  a  separate  management  unit  (Divisions IIIa).  The roundnose  grenadier  on  the  Mid-Atlantic Ridge and the Hatton Bank are separated by a major oceanic basin and may constitute separate management units. This would indicate that the assessment units could be split into: Roundnose grenadier (Coryphaenoides rupestris) in Division IIIa Roundnose grenadier (Coryphaenoides rupestris) in Subareas VI and VII, and Divisions Vb and XIIb Roundnose grenadier (Coryphaenoides rupestris) on the Mid-Atlantic Ridge (Divisions Xb and XIIc, and Subdivisions Va1, XIIa1, and XIVb1) Roundnose grenadier (Coryphaenoides rupestris) in all other areas (Subareas I, II, IV, VIII, and IX, Division XIVa, and Subdivisions Va2 and XIVb2)  


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ICES Advice: Recurrent advice