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Overview

Comprehensive Description

[[ Etmopterus ZBK ]]

Key to the Etmopterus ZBK species of Western North Pacific

1a. Dermal denticles not arranged in longitudinal rows ..................................................... 2

1b. Dermal denticles arranged in longitudinal rows ........................................................... 3

2a. Upper teeth with 4-5 cusplets, gill openings very short .................... E. decacuspidatus ZBK

2b. Upper teeth usually 2 cusplets, gill openings fairly large ............................. E. unicolor

3a. Pelvic-fin flank marking without a posterior branch ................................. E. splendidus ZBK

3b. Pelvic-fin flank marking with a posterior branch 4 ..................................................... 11

4a. Second dorsal fin surface lacking dermal denticles. Central caudal marking <5% TL .. ......................................................................................................................... E. molleri

4b. Second dorsal fin surface with dermal denticles present. Central caudal marking usually>5% TL .................................................................................................................. 5

5a. Caudal peduncle relatively long, 13.7-15.5% TL. Branches of flank marking very long; posterior branch extending well past the second dorsal fin ............ E. brachyurus ZBK

5b. Caudal peduncle relatively short, 11.1-12.8% TL. Branches of flank marking short; posterior branch not extending past second dorsal fin .................................................. 6

6a. Gill openings moderately long, snout narrow. Ventral surface of snout lacking dermal denticles. Color in life brown above, black below........................................... E. lucifer ZBK

6b. Gill openings very long, snout broad. Ventral surface of snout covered with thick dermal denticles. Color in life dark gray above, black below............................ E. burgessi

  • Jayna A. Schaaf-da Silva, David A. Ebert (2006): Etmopterus burgessi sp. nov., a new species of lanternshark (Squaliformes: Etmopteridae) from Taiwan. Zootaxa 1373, 53-64: 62-63, URL:http://www.zoobank.org/urn:lsid:zoobank.org:pub:D574008E-BEE5-41BF-B9B9-2B1D88C7A7D1
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[[ Etmopterus ZBK ]]

The deep-sea elasmobranchs commonly known as lanternsharks (Squaliformes: Etmopteridae: Etmopterus ZBK ) have received an unusual level of systematic study over the past two decades (Yamakawa et al., 1986; Yano, 1988; Last et al., 2002). Sharks of the genus Etmopterus ZBK are small enigmatic sharks widely distributed in temperate and tropical waters around seamounts and along continental margins. Of the 31 recognized species in the genus, Compagno et al. (2005) reports that about one half have been described within the last 20 years. It was previously thought that the genus was comprised of a few widespread members. Deepwater trawls in the Western Pacific by both research agencies and commercial fisheries have revealed new fish fauna. Unique species of etmopterids are consistently documented, suggesting that the group contains numerous, regionally restricted sister species (Last et al., 2002).

The shape and arrangement of dermal denticles are key characteristics used to divide the genus into subgroups. The “ E. pusillus group ” is described as having denticles with low, flat, concave crowns (Springer & Burgess, 1985; Shirai & Tachikawa, 1993). The “ E. lucifer group ZBK ” was coined after Etmopterus lucifer ZBK (Yamakawa et al., 1986), a widely distributed species that is typical of the subgroup in having regular longitudinal rows of thorn-like denticles along the body. Yamakawa et al. (1986) document six members of this species complex: E. brachyurus Smith & Radcliffe, 1912 ZBK ; E. bullisi Bigelow & Schroeder, 1957 ZBK ; E. granulosus ( Guenther , 1880) ; E. lucifer Jordan & Snyder, 1902 ZBK ; E. molleri (Whitley, 1939) ; and E. villosus Gilbert, 1905 ZBK . Later, E. splendidus Yano, 1988 ZBK was described making a total of seven nominal members. Western North Pacific “ E. lucifer group ZBK ” members includes four species: E. brachyurus ZBK , E. lucifer ZBK , E. molleri and E. splendidus ZBK . Compagno et al. (2005) account that all four species are reported to occur in Taiwanese waters. The remaining members of the “ E. lucifer group ZBK ” are known from Hawaii, the North Atlantic, and South America and are not considered here. During surveys of the fish markets in Taiwan, one of us (DAE) collected four specimens of a linear-denticled Etmopterus ZBK that is distinct from the other four known species. Here we describe this new species of Etmopterus ZBK , and provide a revised key for the genus in the western North Pacific.

  • Jayna A. Schaaf-da Silva, David A. Ebert (2006): Etmopterus burgessi sp. nov., a new species of lanternshark (Squaliformes: Etmopteridae) from Taiwan. Zootaxa 1373, 53-64: 53-54, URL:http://www.zoobank.org/urn:lsid:zoobank.org:pub:D574008E-BEE5-41BF-B9B9-2B1D88C7A7D1
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Ecology

Habitat

Known from seamounts and knolls
  • Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication.
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Source: World Register of Marine Species

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Depth range based on 12426 specimens in 36 taxa.
Water temperature and chemistry ranges based on 9618 samples.

Environmental ranges
  Depth range (m): -9 - 50000
  Temperature range (°C): 2.024 - 25.380
  Nitrate (umol/L): 1.165 - 44.078
  Salinity (PPS): 33.312 - 38.649
  Oxygen (ml/l): 0.817 - 6.486
  Phosphate (umol/l): 0.187 - 3.121
  Silicate (umol/l): 0.000 - 142.203

Graphical representation

Depth range (m): -9 - 50000

Temperature range (°C): 2.024 - 25.380

Nitrate (umol/L): 1.165 - 44.078

Salinity (PPS): 33.312 - 38.649

Oxygen (ml/l): 0.817 - 6.486

Phosphate (umol/l): 0.187 - 3.121

Silicate (umol/l): 0.000 - 142.203
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                        
Specimen Records:510Public Records:166
Specimens with Sequences:415Public Species:20
Specimens with Barcodes:330Public BINs:17
Species:33         
Species With Barcodes:27         
          
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Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Etmopterus c.f. brachyurus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 1
Species With Barcodes: 1
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Source: Barcode of Life Data Systems (BOLD)

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Barcode data

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Source: Barcode of Life Data Systems (BOLD)

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Locations of barcode samples

Collection Sites: world map showing specimen collection locations for Etmopterus

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Wikipedia

Etmopterus

Etmopterus, commonly known as lantern sharks, is a diverse genus of dogfish sharks in the family Etmopteridae. This genus has 36 described species.

Species[edit]

See also[edit]

References[edit]

  1. ^ Adnet, S. and H. Cappetta (2001). "A palaeontological and phylogenetical analysis of squaliform sharks (Chondrichthyes: Squaliformes) based on dental characters". Lethaia 34 (3): 234–248. doi:10.1080/002411601316981188. 
  2. ^ a b Garrick JAF (1957) Studies on New Zealand elasmobranchii. Part VI. Two new species of Etmopterus from New Zealand. Bulletin of the Museum of Comparative Zoology at Harvard College 116: 71–190
  3. ^ Shirai S, Tachikawa H (1993) Taxonomic resolution of the Etmopterus pusillus species group (Elasmobranchii, Etmopteridae), with description of E. bigelowi, n. sp. Copeia 2:483–495
  4. ^ Silva & Ebert (2006). "Etmopterus burgessi sp. nov., a new species of lanternshark (Squaliformes: Etmopteridae) from Taiwan". Zootaxa 1373: 53–64. 
  5. ^ Straube, N. & Leslie, R.W. & Clerkin, P.J. & Ebert, D.A. & Rochel, E. & Corrigan, S. & Li, C. & Naylor, G.J.P. (2014):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, in press
  6. ^ 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, 17 (2): 61-72.
  7. ^ Jordan DS, Snyder JO (1903) Descriptions of two new species of squaloid sharks from Japan. Proceedings of the United States National Museum 25:79–81
  8. ^ a b c Bigelow HB, Schroeder WC, Springer S (1953) New and little known Sharks from the Atlantic and the Gulf of Mexcico. Bulletin of the Museum of Comparative Zoology at Harvard College 109:237–263
  9. ^ 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. ^ 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.
  11. ^ Straube, N., Duhamel, G., Gasco, N., Kriwet, J. & Schliewen, U. (2011): Description of a new deep-sea lantern shark, Etmopterus viator n. sp. (Squaliformes: Etmopteridae) from the southern hemisphere. In: Duhamel, G. & Welsford, D. (eds). (2011): The Kerguelen Plateau, Marine Ecosystem and Fisheries. Société Française d´Ichtyologie: 137-150.
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