Poroderma africanum
Poroderma africanum (Gmelin, 1789) (Fig. 1, Table 1) Squalus africanus Gmelin, 1789: 1494. Squalus vittatus Shaw and Nodder, 1798: 346 (in Garman 1913: 70, and Compagno 1984b: 347), although attributed to Walbaum 1792: 516, by Fowler 1941: 40. Scyllium africanum: Cuvier 1816: 359; Müller and Henle 1...
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| Format: | Other/Unknown Material |
| Language: | unknown |
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2006
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| Online Access: | https://zenodo.org/record/6259285 https://doi.org/10.5281/zenodo.6259285 |
| Summary: | Poroderma africanum (Gmelin, 1789) (Fig. 1, Table 1) Squalus africanus Gmelin, 1789: 1494. Squalus vittatus Shaw and Nodder, 1798: 346 (in Garman 1913: 70, and Compagno 1984b: 347), although attributed to Walbaum 1792: 516, by Fowler 1941: 40. Scyllium africanum: Cuvier 1816: 359; Müller and Henle 1838 -1841: xxi, 12; Smith 1849: 9; Duméril 1853: 82; Günther 1870: 405; Bleeker 1878: 1, 8; Sauvage 1891: 6, 511; Gilchrist 1902: 103; Gilchrist 1914: 111; Lampe 1914: 209. Squalus striatus Forster in Lichtenstein, 1844: 407 (in Garman 1913: 70, Fowler 1941: 40, and Compagno 1984b: 347). Scyliorhinus africanus: Regan 1908: 456; Bigelow and Schroeder 1948: 197. Scylliorhinus africanus: Thompson 1914: 136; Gilchrist and Thompson 1916: 270; Gilchrist 1922: 4; Barnard 1925: 39; Barnard 1927: 1013; Barnard 1948: 342. Poroderma africana: Wallace et al. 1984: 159; Buxton et al. 1984: 186. Type Series and Locality. No types exist for P. africanum. “Habitat in mari africano” (from African seas). Diagnosis. P. africanum is characterised, and distinguished from its congener, by the presence of bold, thick black stripes (Fig. 1). The snout of P. africanum is wider, shorter and more broadly pointed than in P. pantherinum; head width 13.5% TL. The upper labial furrow is shorter and thicker than in P. pantherinum; upper labial furrow length 0.6 times its width. The nasal barbels of P. africanum are stouter than P. pantherinum, rarely reach the upper lip and do not overhang the mouth; nasal barbel length 0.5 times nostril width. Description. Morphometric and meristic data are given in Table 1. Since no type material is available for P. africanum, the following is based on specimens examined by the author (see Study material). P. africanum is a robust shark and the larger of the Poroderma sharks. Precaudal length 1.25 times the preanal length; snout wide and broadly pointed; distance from snout to 2nd dorsal fin origin 1.3 times the distance from snout to 1st dorsal fin origin; mouth width 2.1 times the preoral length; prenarial ... |
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