Raja clavata Linnaeus 1758 ...
Raja clavata Linnaeus, 1758 Distribution. Thornback ray (R. clavata) is one of the most abundant elasmobranchs in the Northeast Atlantic and has a broad distribution from Iceland and Norway to Northwest Africa and the Mediterranean Sea (Stehmann & Bürkel, 1984; Serena et al., 2010). The eggcases...
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| Format: | Text |
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Zenodo
2016
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| Online Access: | https://dx.doi.org/10.5281/zenodo.5631366 https://zenodo.org/doi/10.5281/zenodo.5631366 |
| Summary: | Raja clavata Linnaeus, 1758 Distribution. Thornback ray (R. clavata) is one of the most abundant elasmobranchs in the Northeast Atlantic and has a broad distribution from Iceland and Norway to Northwest Africa and the Mediterranean Sea (Stehmann & Bürkel, 1984; Serena et al., 2010). The eggcases of R. clavata were reported frequently to the Great Eggcase Hunt, with submissions from nearly all of the British coastline, albeit with only scattered reports from the northeast coast of England. Material examined. Fifty-two eggcases were examined in detail, of which the majority (n = 38) were collected by the Great Eggcase Hunt, with other specimens from trawl surveys (n = 4), museum collections (n = 3; BMNH 1927.3.25.1, BMNH 91.6.18.66–67) and public aquaria (n = 7). Description. The eggcase of R. clavata (Figure 5 b) is robust and of moderate size, with an eggcase length of 67.2 ± 10.0 mm (32.7–83.3 mm) and eggcase width of 37.0 ± 8.2 mm (32.7–69.0 mm). These values, however, mask a diversity in both size and ... : Published as part of Gordon, Cat A., Hood, Ali R. & Ellis, Jim R., 2016, Descriptions and revised key to the eggcases of the skates (Rajiformes: Rajidae) and catsharks (Carcharhiniformes: Scyliorhinidae) of the British Isles, pp. 255-280 in Zootaxa 4150 (3) on page 267, DOI: 10.11646/zootaxa.4150.3.2, http://zenodo.org/record/272101 ... |
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