Shagreen Ray Leucoraja fullonica
Transcription
Shagreen Ray Leucoraja fullonica
Shagreen Ray 1 4 Leucoraja fullonica 3 Ventral view 2 Scientific Name common Name Leucoraja fullonica (Linnaeus, 1758). distribution Northeast Atlantic from Russia and Iceland to Morocco and Madeira, including the Mediterranean Seai. Shagreen Ray, Shagreen Skate, Fuller’s Ray, Fuller’s Shagreen Ray, Rough Flapper, French Ray, Raie Chardon (Fr), Raya Cardadora (Es), Razza Spinosa (It), Kaardrog (Ne). NE Atl Med Dorsal view identification 1Pronounced snout. 2 2 rows of ~50 large thorns either side of the midline to first dorsal fin. 3 3–9 thorns in longitudinal row on upper part of head. 4 8 orbital thornsvi. Adults solid ash grey/brown. Inconspicuous darker lines may run across body. Ventral surface white, some with dark snouti. Biology and Size Max TL: 120cmi. NT No Records Occasional Range Med: DD colour Map base conforms with ICES grid squares. Reported to move inshore during the spring in Icelandic waters, most likely for feeding purposesv. RJF Prey on a variety of benthic species such as small invertebrates and bony fishii. Shagreen Ray Supported by: similar species Amblyraja radiata, Starry Skate Leucoraja circularis, Sandy Ray teeth 58 (young)–68 (adult) rows in upper jaw. Pointed in both sexesii. Raja clavata, Thornback Ray Raja microocellata, Small-eyed Ray (juv.) Habitat Demersal from 30–550m. Found along outer continental shelves and occasionally in inshore waters. Thought to have a preference for rough groundiv. conservation status Biology and life history not well understood but high potential for overfishingiv. Red List status: Near Threatened (2008). Data Deficient in Mediterranean. commercial importance No targeted fishery but it is taken in multispecies trawl fisheries across its range. Regularly taken by longline fisheries in the north of their range. When caught, they are often landed and sold for human consumptioniv. 2009 – Species currently subject to TAC in EU waters. Handling and thorn arrangement Handle with care. Shagreen Ray Rows of strong thorns on midline. Row of thorns on head. Orbital thorns. references i. Agustin, L. Q; 2009. Fishbase. ii. Clark, R. S; 1926. Fishery Board for Scotland. iii. FAO; Unknown. iv. Gibson, C. et al; 2006. IUCN SSC Shark Specialist Group. v Wheeler, A; 1969. Macmillan and Co. Ltd. vi. Whitehead, P. J. P. et al; 1986. UNESCO. vii. Zidowitz, H. et al; 2008. The Shark Alliance. Eggcase 1 ~80mm in length (excluding horns). 2 ~ 50mm in widthiii. Similar eggcase to the Sandy Ray, Leucoraja circularis, and the Cuckoo Ray, Leucoraja naevus.. RJF01/01/09
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Shagreen Ray Leucoraja fullonica
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