Etmopterus Explained

Etmopterus is a genus of lantern sharks in the squaliform family Etmopteridae. They are found in deep sea ecosystems of the Atlantic, Indian and Pacific Oceans.

Ecology

A number of species in this genus function as host to the specialized parasitic barnacle Anelasma squalicola, which embeds itself into the skin of the shark and extracts nutrients from its bloodstream.^[1]

Species

There are currently 45 recognized species in this genus:

• Etmopterus alphus Ebert, Straube, Leslie & Weigmann, 2016 (whitecheek lanternshark)^[2]
• Etmopterus baxteri Garrick, 1957 (New Zealand lanternshark)^[3]
• Etmopterus benchleyi Vásquez, Ebert & D. J. Long, 2015 (ninja lanternshark)^[4]
• Etmopterus bigelowi Shirai & Tachikawa, 1993 (blurred lanternshark)
• Etmopterus brachyurus H. M. Smith & Radcliffe, 1912 (short-tail lanternshark)
• Etmopterus brosei Ebert, Leslie & Weigmann, 2021 (Barrie's lanternshark)^[5]
• Etmopterus bullisi Bigelow & Schroeder, 1957
• Etmopterus burgessi Schaaf-Da Silva & Ebert, 2006^[6]
• Etmopterus carteri S. Springer & G. H. Burgess, 1985 (cylindrical lanternshark)
• Etmopterus caudistigmus Last, G. H. Burgess & Séret, 2002 (tail-spot lanternshark)
• Etmopterus compagnoi R. Fricke & Koch, 1990^[7]
• Etmopterus decacuspidatus W. L. Y. Chan, 1966 (comb-tooth lanternshark)
• Etmopterus dianthus Last, G. H. Burgess & Séret, 2002 (pink lanternshark)
• Etmopterus dislineatus Last, G. H. Burgess & Séret, 2002
• Etmopterus evansi Last, G. H. Burgess & Séret, 2002 (black-mouth lanternshark)
• Etmopterus fusus Last, G. H. Burgess & Séret, 2002 (pygmy lanternshark)
• Etmopterus gracilispinis G. Krefft, 1968 (broad-banded lanternshark)
• Etmopterus granulosus (Günther, 1880) (southern lanternshark)
• Etmopterus hillianus (Poey, 1861) (Caribbean lanternshark)
• Etmopterus joungi Knuckey, Ebert & G. H. Burgess, 2011 (short-fin smooth lanternshark)^[8]
• Etmopterus lailae Ebert, Papastamatiou, Kajiura & Wetherbee, 2017 (Laila's lanternshark)^[9]
• Etmopterus litvinovi Parin & Kotlyar, 1990 (small-eye lanternshark)
• Etmopterus lucifer D. S. Jordan & Snyder, 1902 (black-belly lanternshark)
• Etmopterus marshae Ebert & Van Hees (Marsha's lanternshark)^[10]
• Etmopterus molleri (Whitley, 1939) (Moller's lanternshark or also Slendertail lanternshark)
• Etmopterus perryi S. Springer & G. H. Burgess, 1985 (dwarf lanternshark)
• Etmopterus polli Bigelow, Schroeder & S. Springer, 1953 (African lanternshark)
• Etmopterus princeps Collett, 1904 (great lanternshark)
• Etmopterus pseudosqualiolus Last, G. H. Burgess & Séret, 2002 (false lanternshark)
• Etmopterus pusillus (R. T. Lowe, 1839) (smooth lanternshark)
• Etmopterus pycnolepis Kotlyar, 1990 (dense-scale lanternshark)
• Etmopterus robinsi Schofield & G. H. Burgess, 1997 (West Indian lanternshark)
• Etmopterus samadiae W. T. White, Ebert, Mana & Corrigan, 2017 (Papuan lanternshark)^[11]
• Etmopterus schultzi Bigelow, Schroeder & S. Springer, 1953 (fringe-fin lanternshark)
• Etmopterus sculptus Ebert, Compagno & De Vries, 2011 (sculpted lanternshark)^[12]
• Etmopterus sentosus Bass, D'Aubrey & Kistnasamy, 1976 (thorny lanternshark)
• Etmopterus sheikoi (Dolganov, 1986) (rasp-tooth dogfish)^[13]
• Etmopterus spinax (Linnaeus, 1758) (velvet-belly lanternshark)
• Etmopterus splendidus Ka. Yano, 1988 (splendid lanternshark)
• Etmopterus unicolor (Engelhardt, 1912) (bristled lanternshark)
• Etmopterus viator Straube, 2011 (traveller lanternshark)^[14]
• Etmopterus villosus C. H. Gilbert, 1905 (Hawaiian lanternshark)
• Etmopterus virens Bigelow, Schroeder & S. Springer, 1953 (green lanternshark)

Extinct species

There are at least two extinct species found in Etmopterus.^[15]

• †Etmopterus acutidens Casier 1966
• †Etmopterus cahuzaci Adnet 2006

See also

• List of prehistoric cartilaginous fish

Notes and References

1. Yano K., Musick J.A. . 2000 . The effect of the mesoparasitic barnacle Anelasma on the development of reproductive organs of deep-sea squaloid sharks, Centroscyllium and Etmopterus . Environmental Biology of Fishes . 59 . 3. 329–339 . 10.1023/A:1007649227422. 6049145 .
2. Ebert D.A. . Straube N. . Leslie R.W. . Weigmann S. . 2016 . Etmopterus alphus n. sp.: a new lanternshark (Squaliformes: Etmopteridae) from the south-western Indian Ocean . African Journal of Marine Science . 38 . 3. 329–340 . 10.2989/1814232X.2016.1198275. 89547111 .
3. N. Bailly . 2008 . Etmopterus baxteri Garrick, 1957 . 271627 . October 11, 2017 . Fish .
4. Vásquez V.E. . Ebert D.A. . Long D.J. . 2015 . Etmopterus benchleyi n. sp., a new lanternshark (Squaliformes: Etmopteridae) from the central eastern Pacific Ocean . Journal of the Ocean Science Foundation . 17 . 43–55 .
5. Ebert, D.A. . Leslie, R.W. . Weigmann, S.. 31 May 2021. Etmopterus brosei sp. nov.: a new lanternshark (Squaliformes: Etmopteridae) from the southeastern Atlantic and southwestern Indian oceans, with a revised key to the Etmopterus lucifer clade. Marine Biodiversity . 51 . 3 . 10.1007/s12526-021-01173-0. 236343587 .
6. Zootaxa . 1373 . 2006 . 53–64 . Etmopterus burgessi sp. nov., a new species of lanternshark (Squaliformes: Etmopteridae) from Taiwan . Schaaf-Da Silva, J.A. . Ebert, D.A. . 10.11646/zootaxa.1373.1.3 .
7. Straube, N., Leslie, R.W., Clerkin, P.J., Ebert, D.A., Rochel, E., Corrigan, S., Li, C. & Naylor, G.J.P. (2015): On the occurrence of the Southern Lanternshark, Etmopterus granulosus, off South Africa, with comments on the validity of E. compagnoi. Deep Sea Research Part II: Topical Studies in Oceanography, 115: 11-17.
8. Knuckey, J.D.S., Ebert, D.A. & Burgess, G.H. (2011): Etmopterus joungi n. sp., a new species of lanternshark (Squaliformes: Etmopteridae) from Taiwan. aqua, International Journal of Ichthyology, 17 (2): 61-72.
9. Ebert D.A. . Papastamatiou Y.P. . Kajiura S.M. . Wetherbee B.M. . 2017 . Etmopterus lailae sp. nov., a new lanternshark (Squaliformes: Etmopteridae) from the Northwestern Hawaiian Islands . Zootaxa . 4237 . 2. 371–382 . 10.11646/zootaxa.4237.2.10 . 28264297 .
10. Ebert . David A. . Van Hees . Kelley E. . 2018 . Etmopterus marshae sp. nov, a new lanternshark (Squaliformes: Etmopteridae) from the Philippine Islands, with a revised key to the Etmopterus lucifer clade . Zootaxa . 4508 . 2. 197–210. 10.11646/zootaxa.4508.2.3. 30485973 . 54122190 .
11. White W.T. . Ebert D.A. . Mana R.R. . Corrigan S. . 2017 . Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea . Zootaxa . 4244 . 3. 339–354 . 10.11646/zootaxa.4244.3.3 . 28610109 .
12. Ebert D.A. . Compagno L.J.V. . De Vries M.J. . 2011 . A New Lanternshark (Squaliformes: Etmopteridae: Etmopterus) from Southern Africa . Copeia . 2011 . 3. 379–384 . 10.1643/CI-09-183. 83658773 .
13. Straube N. . White W.T. . Ho H.-C. . Rochel E. . Corrigan S. . Li C. . Naylor G.J.P. . 2013 . A DNA sequence-based identification checklist for Taiwanese chondrichthyans . Zootaxa . 3752 . 1. 256–278 . 10.11646/zootaxa.3752.1.16 . 25229119 .
14. Straube, N. . Duhamel, G. . Gasco, N. . Kriwet, J. . Schliewen, U.K. . 2011 . Description of a new deep-sea Lantern Shark Etmopterus viator sp. nov. (Squaliformes: Etmopteridae) from the Southern Hemisphere. In: Duhamel, G. & Welsford, D. (Eds.), The Kerguelen Plateau: Marine Ecosystem and Fisheries. . Société Française d'Ichtyologie . 137–150 .
15. Web site: List of species/Extinct - complete . shark-references.com . September 25, 2017.