Journal of Ichthyology

, Volume 58, Issue 5, pp 617–632 | Cite as

Resurrection and Redescription of the Southern Dogfish Squalus probatovi (Squalidae), a Valid Species from Angola

  • S. T. F. L. VianaEmail author
  • M. R. de Carvalho


Squalus probatovi, a medium size dogfish species originally from Angolan waters, is resurrected as a valid species and redescribed herein based on morphological characters. This species has been misidentified with S. megalops, S. acutipinnis and S. blainvillei due to confused and concise original description and lack of comparative scrutiny with congeners on later taxonomic accounts. Squalus probatovi is sympatric with S. acanthias, S. blainvillei, S. acutipinnis, S. lalannei, S. mahia, S. margaretsmithae, and S. bassi in the Eastern Atlantic and Western Indian Oceans. The Southern dogfish is characterized by having body bluish dark grey, head small, dorsal-fin spines short, pectoral fins narrow with free rear tips rounded, and caudal fin with narrow lobes and pointed caudal tips, snout moderately short with prenarial length slightly greater than inner nostril-labial furrow space, dermal denticles tricuspid and rhomboid, and high number of total vertebrae (118–124). It differs from its regional congeners by having origin of first dorsal fin located over vertical traced at origin of pectoral fins (vs. posterior to origin of pectoral fins), and dorsal fins upright and slender at fin web (vs. prone and broad at fin web, except for S. mahia). The taxonomic status of S. probatovi and morphological comparisons with regional and other similar species are discussed. An identification key to species of Squalus that occurs in African waters is also provided.


redescription resurrection identification key taxonomy morphology Eastern Atlantic and Western Indian Oceans southern dogfish, Squalus 



We are sincerely grateful to E. Vasil’eva (ZMMU) for taking measurements and pictures of the holotype, and to A. Orlov (VNIRO) for sending copies of Russian literature. G. Duhamel, P. Pruvost and staff (MNHN), O. Crimmen, R. Britz and J. Maclaine (NHM), O. Gon, R. Bills, A. Whitfield and staff (SAIAB), D. Clark and M. Bougaardt (SAM), R. Thiel (ZMH), U. L. Gomes and H. Ricardo (UERJ), M. Britto and late G. Nunan (MNRJ), E. Matos and P. Lenktaitis (USP), M. McGrouther and J. Paxton (AMS), P. R. Last, A. Graham and J. Pogonoski (CSIRO) are thanked for curatorial and technical support. Special thanks to M.T.P. Ragazzo (USP) for academic support, R. Thiel and I. Eidus (ZMH) for sending film radiographs, and W. White (CSIRO) for sharing photos of comparative type material. The first author was supported by the Fundação de Amparo a Pesquisa do Estado de São Paulo (FAPESP, 2011/18861-7, 2013/11621-6, 2014/26503-1), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, 158773/2011-0), and Geddes Collection Visiting Fellowship, Australian Museum (2013). The second author was supported by a grant from CNPq (305271/2015-6).


  1. 1.
    Baranes, A., Sharks from the Amirantes Islands, Seychelles, with a description of two new species of squaloids from the deep sea, Isr. J. Zool., 2003, vol. 49, pp. 33–65. doi 10.1560/N4KU-AV5L-0VFE-83DLCrossRefGoogle Scholar
  2. 2.
    Bass, A.J., D’Aubrey, J.D., and Kistnasamy, N., Sharks of the east coast of southern Africa. VI The families Oxynotidae, Squalidae, Dalatiidae, and Echinorhinidae, Investig. Rep., Oceanogr. Res. Inst., 1976, vol. 45, pp. 1–103.Google Scholar
  3. 3.
    Bass, A.J., Compagno, L.J.V., and Heemstra, P.C., Squaliformes, in Smiths’ Sea Fishes, Smith, M.M., and Heemstra, P.C., Eds., Johannesburg: Macmillan, 1986, pp. 49–62.Google Scholar
  4. 4.
    Cappetta, H., Chondrichthyes II: Mesozoic and Cenozoic Elasmobranchii, in Handbook of Paleoichthyology, Schultze, H.P., Ed., Munich: Verlag Dr. Friedrich Pfeil, 1987, vol. 3B, pp. 1–193.Google Scholar
  5. 5.
    Compagno, L.J.V., FAO Species Catalogue, No. 125: Sharks of the World, An Annotated and Illustrated Catalogue of Shark Species Known to Date, Part 1: Hexanchiformes to Lamniformes, Rome: Food Agric. Org., 1984, vol. 4.Google Scholar
  6. 6.
    Compagno, L.J.V., Ebert, D.A., and Cowley, P.D., Distribution of offshore demersal cartilaginous fish (class Chondrichthyes) off the West coast of Southern Africa, with notes on their systematic, S. Afr. J. Mar. Sci., 1991, vol. 11, no. 1, pp. 43–139. doi 10.2989/025776191784287664CrossRefGoogle Scholar
  7. 7.
    Compagno, L.J.V., Dando, M., and Fowler, S., Sharks of the World, New Jersey: Princeton Univ. Press, 2005.Google Scholar
  8. 8.
    Descriptions of New Dogfishes of the Genus Squalus (Squaloidea: Squalidae), CSIRO Marine and Atmospheric Research Paper No. 014, Last, P.R., White, W.T., and Pogonoski, J.J., Eds., Hobart, Tas.: CSIRO Mar. Atmos. Res., 2007.Google Scholar
  9. 9.
    Deynat, P.P. and Séret, B., Le revêtement cutané des raies (Chondrichthyes, Elasmobranchii, Batoidea). I: Morphologie et arrangement des denticules cutanés, Ann. Sci. Nat. Zool. Biol. Anim., 1996, vol. 17, no. 2, pp. 65–83.Google Scholar
  10. 10.
    Duffy, C.A.J., and Last, P.R., Redescription of the northern spiny dogfish Squalus griffini Phillipps, 1931 from New Zealand, in Descriptions of New Dogfishes of the Genus Squalus (Squaloidea: Squalidae), CSIRO Marine and Atmospheric Research Paper no. 014, Last, P.R., White, W.T., and Pogonoski, J.J., Eds., Hobart, Tas.: CSIRO Mar. Atmos. Res., 2007, part 9, pp. 91–100.Google Scholar
  11. 11.
    Ebert, D.A. and van Hees, K.E., Beyond jaws: rediscovering the ‘lost sharks’ of southern Africa, Afr. J. Mar. Sci., 2015, vol. 37, no. 3, pp. 141–156. doi 10.2989/1814232X.2015.1048730CrossRefGoogle Scholar
  12. 12.
    Ebert, D.A., Fowler, S., and Compagno, L.J.V., Sharks of the World: A Fully Illustrated Guide, London: Wild Nature Press, 2013.Google Scholar
  13. 13.
    Fowler, H.W., Contributions to the biology of the Philippine archipelago and adjacent regions. The fishes of the groups Elasmocephalii, Holocephali, Isospondyli, and Ostariophysi obtained by the United States Fisheries Steamer “Albatross” in 1907 to 1910, chiefly in the Philippine islands and adjacent seas, Bull. U. S. Nat. Mus., 1941, vol. 100, pp. 1–879.Google Scholar
  14. 14.
    Garrick, J.A.F., Studies on New Zealand Elasmobranchii. Part XII. The species of Squalus from New Zealand and Australia; and a general account and key to the New Zealand Squaloidea, Trans. R. Soc. N. Z., 1960, vol. 88, no. 3, pp. 519–557.Google Scholar
  15. 15.
    Gubanov, E.P., Kondyurin, V.V., and Myagkov, N.A., Squalidae, in Akuly Mirovogo okeana: Spravochnik-opredelitel’ (Guide for Identification of the Sharks of the World Ocean), Moscow: Agropromizdat, 1986, pp. 172–176.Google Scholar
  16. 16.
    Herman, J., Hovestadt-Euler, M., and Hovestadt, D.C., Contributions to the study of the comparative morphology of teeth and other relevant ichthyodorulites in living supraspecific taxa of Chondrichthyes fishes. Part A: Selachii. No. 3: Order Squaliformes—families Echinorhinidae, Oxynotidae, and Squalidae, Bull. Inst. R. Sci. Nat. Belg. Biol., 1989, vol. 59, no. 1, pp. 101–157.Google Scholar
  17. 17.
    Kondyurin, V.V., Some data on the biology of the spiny shark S. fernandinus from the Southeastern Atlantic shelf, Tr. Kaliningrad. Tekh. Inst. Rybn. Prom. Khoz., 1973, vol. 46, pp. 44–53.Google Scholar
  18. 18.
    Kondyurin, V.V. and Myagkov, N.A., Status of spiny sharks S. acutipinnis Regan, 1908 (Squalidae, Squaliformes) from the South African waters, Zool. Zh., 1979, vol. 58, no. 10, pp. 1604–1606.Google Scholar
  19. 19.
    Kondyurin, V.V. and Myagkov, N.A., Morphological characteristics of two dogfish species, S. acanthias L., 1758 and S. fernandinus, from Southeastern Atlantic, J. Ichthyol., 1982, vol. 22, no. 2, pp. 214–223.Google Scholar
  20. 20.
    Kondyurin, V.V., Myagkov, N.A., and Burdin, A.G., Some morphological characteristics of spiny shark S. blainvillei Risso from the eastern part of Central Atlantic, J. Ichthyol., 1980, vol. 20, no. 4, pp. 739–741.Google Scholar
  21. 21.
    Last, P.R., Edmunds, M., and Yearsley, G.K., Squalus crassispinus sp nov., a new spurdog of the megalopscubensis group from the eastern Indian Ocean, in Descriptions of New Dogfishes of the Genus Squalus (Squaloidea: Squalidae), CSIRO Marine and Atmospheric Research Paper No. 014, Last, P.R., White, W.T., and Pogonoski, J.J., Eds., Hobart, Tas.: CSIRO Mar. Atmos. Res., 2007a, part 2, pp. 11–22.Google Scholar
  22. 22.
    Last, P.R., White, W.T., and Motomura, H., A description of Squalus chloroculus sp. nov., a new spurdog from southern Australia, and the resurrection of S. montalbani Whitley, in Descriptions of New Dogfishes of the Genus Squalus (Squaloidea: Squalidae), CSIRO Marine and Atmospheric Research Paper no. 014, Last, P.R., White, W.T., and Pogonoski, J.J., Eds., Hobart, Tas.: CSIRO Mar. Atmos. Res., 2007b, part 6, pp. 55–69.Google Scholar
  23. 23.
    Last, P.R., White, W.T., Pogonoski, J.J., Gledhill, D.C., Yearsleay, G.K., and Ward, R.D., Application of a rapid taxonomic approach to the genus Squalus, in Descriptions of New Dogfishes of the Genus Squalus (Squaloidea: Squalidae), CSIRO Marine and Atmospheric Research Paper no. 014, Last, P.R., White, W.T., and Pogonoski, J.J., Eds., Hobart, Tas.: CSIRO Mar. Atmos. Res., 2007c, part 1, pp. 1–10.Google Scholar
  24. 24.
    Merrett, N.F., A new shark of the genus Squalus (Squalidae, Squaloidea) from the equatorial western Indian Ocean, with notes on the Squalus blainvillei, J. Zool., 1973, vol. 171, pp. 93–110. doi 10.1111/j.1469-7998.1973.tb07518.xCrossRefGoogle Scholar
  25. 25.
    Muñoz-Chápuli, R. and Ramos, F., Morphological comparisons of Squalus blainvillei and S. megalops in the Eastern Atlantic, with notes on the genus, Jpn. J. Ichthyol., 1989, vol. 36, no. 1, pp. 6–21. doi 10.1007/BF02905668Google Scholar
  26. 26.
    Myagkov, N.A. and Kondyurin, V.V., Taxonomical position of spiny sharks of the genus Squalus from the Eastern Atlantic, Zool. Zh., 1978, vol. 57, no. 1, pp. 143–145.Google Scholar
  27. 27.
    Myagkov, N.A. and Kondyurin, V.V., On the division of dogfishes of the genus Squalus (Squaliformes, Squalidae) in two groups, Zool. Zh., 1981, vol. 60, no. 11, pp. 1734–1736.Google Scholar
  28. 28.
    Myagkov, N.A. and Kondyurin, V.V., Dogfishes, Squalus (Squalidae) of the Atlantic Ocean and comparative notes on the species of this genus from other regions, J. Ichthyol., 1986, vol. 26, no. 6, pp. 1–18.Google Scholar
  29. 29.
    Naylor, G.J.P., Caira, J.N., Jensen, K., Rosana, A.M., White, W.T., and Last, P.R., A DNA sequence-based approach to the identification of shark and rays species and its implication of global elasmobranch diversity and parasitology, Bull. Am. Mus. Nat. Hist., 2012, vol. 367, no. 1, pp. 1–262.CrossRefGoogle Scholar
  30. 30.
    Sabaj, M.H., Standard Symbolic Codes for Institutional Resource Collections in Herpetology and Ichthyology: Version 6.5, Washington, DC: Am. Soc. Ichthyol. Herpetol., 2016. Accessed September 2, 2016.Google Scholar
  31. 31.
    Silas, E.G. and Prasad, N.K., On the occurrence of the deep-water squaloid shark Squalus fernandinus Molina from the continental slope off the West coast of India, Curr. Sci., 1969, vol. 38, no. 20, pp. 484–486.Google Scholar
  32. 32.
    Smith, J.L.B., The Sea Fishes of Southern Africa, Cape Town: Central News Agency, 1961, 4th ed.Google Scholar
  33. 33.
    Springer, V.G. and Garrick, J.A.F., A survey of vertebral numbers in sharks, Proc. U.S. Natl. Mus., 1964, vol. 116, no. 3496, pp. 73–96.Google Scholar
  34. 34.
    Vasil’eva, E.D., Sazonov, N.N., and Verigina, I.A., Class Cephalaspidomorphi, Sb. Tr. Zool. Muz., Mosk. Gos. Univ., 2001, vol. 41, pp. 15–88.Google Scholar
  35. 35.
    Veríssimo, A., Zaera-Perez, D., Leslie, R., Iglésias, S.P., Sèret, B., Grigoriou, P., Sterioti, A., Gubili, C., Barría, C., Duffy, C., Hernández, S., Batjakas, I.E., and Griffiths, A.M., Molecular diversity and distribution of eastern Atlantic and Mediterranean dogfishes Squalus highlight taxonomic issues in the genus, Zool. Scr., 2017, vol. 46, no. 4, pp. 414–428. doi 10.1111/zsc.12224CrossRefGoogle Scholar
  36. 36.
    Viana, S.T.F. and Carvalho, M.R., Redescription of Squalus acutipinnis Regan, 1908, a valid species of spiny dogfish from Southern Africa (Chondrichthyes: Squaliformes: Squalidae), Copeia, 2016, vol. 104, no. 2, pp. 539–553. doi 10.1643/CI-14-217CrossRefGoogle Scholar
  37. 37.
    Viana, S.T.F., Carvalho, M.R., and Gomes, U.L., Taxonomy and morphology of species of the genus Squalus Linnaeus, 1758 from the Southwestern Atlantic Ocean (Chondrichthyes: Squaliformes: Squalidae), Zootaxa, 2016, vol. 4133, no. 1, pp. 1–89. doi 10.11646/zootaxa.4133.1.1CrossRefPubMedGoogle Scholar
  38. 38.
    Viana, S.T.F.L., Carvalho, M.R., and Ebert, D.A., Squalus bassi sp. nov., a new long-snouted spurdog (Chondrichthyes: Squaliformes: Squalidae) from the Agulhas Bank, J. Fish Biol., 2017a, vol. 91, no. 4, pp. 1178–1207. doi 10.1111/jfb.13448CrossRefPubMedGoogle Scholar
  39. 39.
    Viana, S.T.F.L., Lisher, M.W., and Carvalho, M.R., Two new species of short-snouted dogfish sharks of the genus Squalus Linnaeus, 1758 from Southern Africa (Chondrichthyes: Squaliformes: Squalidae), Mar. Biodiversity, 2017. doi 10.1007/s12526-017-0673-8Google Scholar
  40. 40.
    Weigmann, S., Annotated checklist of the living sharks, batoids and chimaeras (Chondrichthyes) of the world, with a focus on biogeographical diversity, J. Fish Biol., 2016, vol. 88, no. 3, pp. 837–1037. doi 10.1111/jfb.12874CrossRefPubMedGoogle Scholar
  41. 41.
    White, W.T., Last, P.R., and Stevens, J.D., Two new species of Squalus of the mitsukurii group from the Indo-Pacific, in Descriptions of New Dogfishes of the Genus Squalus (Squaloidea: Squalidae), CSIRO Marine and Atmospheric Research Paper no. 014, Last, P.R., White, W.T., and Pogonoski, J.J., Eds., Hobart, Tas.: CSIRO Mar. Atmos. Res., 2007, part 7, pp. 71–81.Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Departamento de Zoologia, Instituto de Biociências, Universidade de São PauloSão PauloBrazil
  2. 2.South African Institute for Aquatic BiodiversityGrahamstownSouth Africa

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