Levinsenia demiri, Çinar & Dagli & Açik, 2011

Çinar, Melih Ertan, Dagli, Ertan & Açik, Sermin, 2011, Annelids (Polychaeta and Oligochaeta) from the Sea of Marmara, with descriptions of five new species, Journal of Natural History 45 (33 - 34), pp. 2105-2143: 2124-2128

publication ID

http://doi.org/ 10.1080/00222933.2011.582966

persistent identifier

http://treatment.plazi.org/id/03A887C7-FFC7-FFD0-FE7A-66B2FEBD5C46

treatment provided by

Felipe

scientific name

Levinsenia demiri
status

sp. nov.

Levinsenia demiri   sp. nov.

( Figures 5 View Figure 5 , 6 View Figure 6 )

Material examined

Holotype. ESFM – POL / 2008–79, 9 September 2008, Sea of Marmara , Erdek, E 5, 40 ◦ 18 ′ 57 ′′ N, 27 ◦ 45 ′ 51 ′′ E, 32 m, mud. GoogleMaps  

Paratypes. ESFM – POL / 2008–80   , 24 specimens, 9 September 2008, Sea of Marmara , Erdek, E 5, 40 ◦ 18 ′ 57 ′′ N, 27 ◦ 45 ′ 51 ′′ E, 32 m, mud GoogleMaps   ; ESFM – POL / 2008–81   , 11 specimens, 9 September 2008, Sea of Marmara , Erdek, E 6, 40 ◦ 18 ′ 49 ′′ N, 27 ◦ 46 ′ 04 ′′ E, 27 m, sandy mud GoogleMaps   ; ESFM – POL / 2008–82   , 13 specimens, 9 September 2008, Sea of Marmara , Erdek, E 4, 40 ◦ 19 ′ 01 ′′ N, 27 ◦ 46 ′ 03 ′′ E, 34 m, mud GoogleMaps   ; ESFM – POL / 2010–54   , one specimen, 15 April 2010, Sea of Marmara , G6, 40 ◦ 30 ′ 33 ′′ N, 26 ◦ 58 ′ 02 ′′ E, 51 m, sandy mud GoogleMaps   ; ESFM – POL / 2010–55   , one specimen, 15 April 2010, Sea of Marmara , G12, 40 ◦ 26 ′ 20 ′′ N, 27 ◦ 05 ′ 05 ′′ E, 15 m, sandy mud GoogleMaps   .

Additional material examined

Aegean Sea: ESFM – POL / 2004–856, 21 specimens, 1 December 2004, Ildırı Bay , station 2, 38 ◦ 23 ′ 17 ′′ N, 26 ◦ 27 ′ 17 ′′ E, 60 m, mud GoogleMaps   ; ESFM – POL / 2009–42, one specimen, 24 February 2009, İzmir Bay , station 4, 38 ◦ 41 ′ 00 ′′ N, 26 ◦ 42 ′ 05 ′′ E, 59 m, mud GoogleMaps   ; ESFM – POL / 2009–297, 10 specimens, 29 July 2009, İzmir Bay , station 6, 38 ◦ 38 ′ 18 ′′ N, 26 ◦ 39 ′ 08 ′′ E, 68 m, mud GoogleMaps   ; ESFM – POL / 2009–298, 15 specimens, 24 February 2009, İzmir Bay , station 20, 38 ◦ 26 ′ 00 ′′ N, 26 ◦ 51 ′ 08 ′′ E, 50 m, mud GoogleMaps   ; ESFM – POL / 2009–299, five specimens, 13 April 2009, İzmir Bay , station 17, 38 ◦ 25 ′ 95 ′′ N, 26 ◦ 39 ′ 13 ′′ E, 28 m, sandy mud   .

Levantine Sea: ESFM – POL / 2005–124, two specimens, 8 September 2005, İskenderun Bay , station D2, 36 ◦ 37 ′ 35 ′′ N, 36 ◦ 08 ′ 45 ′′ E, 50 m, mud GoogleMaps   ; ESFM – POL / 2005–249, five specimens, 9 September 2005, İskenderun Bay , station D7, 36 ◦ 51 ′ 14 ′′ N, 35 ◦ 57 ′ 8 ′′ E, 34 m, mud GoogleMaps   ; ESFM – POL / 2005–259, four specimens, 9 September 2005, İskenderun Bay , station G2, 36 ◦ 43 ′ 19 ′′ N, 36 ◦ 09 ′ 30 ′′ E, 50 m, mud GoogleMaps   ; ESFM – POL / 2005–324, one specimen, 8 September 2005, İskenderun Bay , station D3, 36 ◦ 36 ′ 38 ′′ N, 36 ◦ 10 ′ 51 ′′ E, 25 m, mud GoogleMaps   ; ESFM – POL / 2005–655, 10 specimens, 8 September 2005, İskenderun Bay , station D1, 36 ◦ 38 ′ 11 ′′ N, 36 ◦ 06 ′ 48 ′′ E, 72 m, mud GoogleMaps   ; ESFM – POL / 2005–688, 10 specimens, 10 September 2005, İskenderun Bay , station D19, 36 ◦ 21 ′ 15 ′′ N, 35 ◦ 44 ′ 27 ′′ E, 75 m, muddy sand GoogleMaps   ; ESFM – POL / 2005–836, two specimens, 17 September 2005, Mersin Bay , station D23, 36 ◦ 40 ′ 50 ′′ N, 34 ◦ 35 ′ 00 ′′ E, 50 m, mud GoogleMaps   ; ESFM – POL / 2005–912, four specimens, 23 September 2005, Anamur , station D33, 36 ◦ 02 ′ 31 ′′ N, 32 ◦ 54 ′ 54 ′′ E, 200 m, mud GoogleMaps   ; ESFM – POL / 2005–1544, three specimens, 6 October 2005, Fethiye Bay , station G28, 36 ◦ 37 ′ 48 ′′ N, 29 ◦ 06 ′ 30 ′′ E, 10 m, mud GoogleMaps   ; ESFM – POL / 2005–1621, nine specimens, 27 September 2005, Antalya Bay , station G12, 36 ◦ 50 ′ 17 ′′ N, 30 ◦ 36 ′ 31 ′′ E, 10 m, mud GoogleMaps   ; ESFM – POL / 2005–1710, one specimen, 23 September 2005, Anamur , station D32, 36 ◦ 02 ′ 02 ′′ N, 32 ◦ 53 ′ 59 ′′ E, 200 m, mud GoogleMaps   ; ESFM – POL / 2005–1874, 24 specimens, 6 October 2005, Fethiye Bay , station G32, 36 ◦ 38 ′ 42 ′′ N, 29 ◦ 03 ′ 18 ′′ E, 100 m, mud GoogleMaps   ; ESFM – POL / 2005–2168, six specimens, 6 October 2005, Fethiye Bay , station G33, 36 ◦ 38 ′ 28 ′′ N, 29 ◦ 02 ′ 37 ′′ E, 200 m, mud GoogleMaps   .

Comparative material examined

Levinsenia kantauriensis   : Paratype, INSUB POL 331, five specimens   , Bay of Biscay , eastern Atlantic, 495 m.  

Description

Holotype complete, 8.93 mm long, 0.19 mm wide, with 67 chaetigers. Colour in alcohol opaque white. Body long, slender, wider anteriorly, filiform from midbody, gradually tapering to posterior end. Anterior segments short, much wider than long (ca. three times) ( Figure 5A View Figure 5 ). Prostomium conical, with a truncated anterior margin, longer than wide (length: 105 µm, width: 90 µm), ending in a cylindrical sensory organ. Pair of nuchal organs as deep nuchal slits ( Figure 5A View Figure 5 ). Posterior buccal lip with five longitudinal folds, extending to end of chaetiger 1 ( Figure 5B View Figure 5 ). Eyes absent.

First five notopodial postchaetal lobes (prebranchial) short, rounded, ca. 12.5 µm long ( Figure 6A View Figure 6 ); from chaetiger 6 to 10 (branchial region) longer, digitiform, ca. 12.5–27.5 µm long ( Figure 6B View Figure 6 ); in postbranchial region longer and thinner than those in branchial region; ca. 37.5 µm on middle part of body; shorter, more thinner, fingerlike on posterior chaetigers of the body, ca. 27.5 µm ( Figure 6D View Figure 6 ). Neuropodial postchaetal lobes absent ( Figure 6A,D View Figure 6 ). Branchiae starting from chaetiger 6, five pairs, ca. 100 µm long, 25 µm wide (l / w mostly between 3.6 and 5); cirriform, densely ciliated, except for last pair (ciliated on paratypes); cilia emerging along a groove (slightly articulated) on ventral side of branchiae ( Figure 6B View Figure 6 ); last pair shortest and narrowest, ca. 52.5 µm long ( Figure 6A View Figure 6 ). Chaetigers 1–13 with only capillary chaetae; notopodium of chaetiger 2 with ten capillary chaetae (ca. 187.5 µm long), neuropodium of chaetiger 2 with nine capillary chaetae (ca. 195 µm long). Notopodium of chaetiger 13 with seven or eight capillary chaetae (ca. 185 µm long), neuropodium of chaetiger 13 with six or seven capillary chaetae (ca. 192.5 µm long). Modified neurochaeta starting from chaetiger 14 (15 in paratypes) to end of body, up to four to six per fascicle, arranged in a single row, strongly curved, unidentate, with thin hood on convex side, not extending to chaetal tip; with expanded shaft; with two to four accompanying fine capillary chaetae ( Figure 6C,D View Figure 6 ). Notopodium of chaetiger 20 with five capillary chaetae (ca. 195 µm long), neuropodium of chaetiger 20 with four capillary chaetae (ca. 198 µm long) and three modified chaetae (17.5 µm long; length from node to tip). Notopodium of chaetiger 43 with five capillary chaetae (ca. 208 µm long), neuropodium of chaetiger 43 with two capillary chaetae (ca. 205 µm long) and four modified chaetae (20 µm long); Notopodium of chaetiger 55 with four capillary chaetae (ca. 213 µm long), neuropodium of chaetiger 55 with three capillary chaetae (ca. 215 µm long) and four modified chaetae (22.5 µm long). Notopodium of chaetiger 65 with three capillary chaetae (ca. 225 µm long), neuropodium of chaetiger 65 with two capillary chaetae (ca. 230 µm long) and five modified chaetae (22.5 µm long). Pygidium with a rectangular mid-dorsal lobe (ca. 47.5 µm long, 40 µm wide) and two long ventro-lateral cirri (ca. 57.5 µm long, 7.5 µm wide) ( Figure 5C View Figure 5 ).

Remarks

Levinsenia demiri   sp. nov. is mainly characterized by having five pairs of branchiae between chaetigers 6 and 10. The same branchia number and morphology were previously reported in Levinsenia kantauriensis Aguirrezabalaga and Gil, 2009   , which was originally described from the northeast Atlantic (Bay of Biscay) between depths of 492 and 1113 m ( Aguirrezabalaga and Gil 2009). Levinsenia demiri   is closely related to L. kantauriensis   in the number of the prebranchial and branchial chaetigers, the morphology of body, branchiae, neuropodial postchaetal lobes and capillary chaetae, and the shape of prebranchial and branchial postchaetal lobes. However, Levinsenia demiri   differs from it with respect to some important characters; the shape of the posterior buccal lip [with five longitudinal folds, extending to the end of chaetiger 1 in L. demiri   , vs. with six or seven longitudinal folds, extending to chaetiger 2 in L. kantauriensis   ]; the shape of the postbranchial notopodial lobes (longer than prebranchial and branchial notopodial lobes in L. demiri   vs. short and rounded in L. kantauriensis   ); the cilia of branchiae (present in L. demiri   vs. absent in L. kantauriensis   ); the first occurrence of modified neurochaeta (14–15 in L. demiri   vs. 12–16 in L. kantauriensis   ); the shape of modified chaetae (strongly curved, with thin hood on convex side, not extending to chaetal tip in L. demiri   vs. slightly curved, with thickened hood, strongly protruding in L. kantauriensis   ). Levinsenia demiri   was found at depths ranging from 10 to 200 m on the coast of Turkey, whereas L. kantauriensis   was previously reported at depths ranging from 492 to 1113 m in Capbreton Canyon, Bay of Biscay ( Aguirrezabalaga and Gil 2009).

Levinsenia demiri   is also similar to L. flava ( Strelzov 1973)   , L. gracilis minuta ( Hartmann-Schröder 1965)   and L. multibranchiata ( Hartman 1957)   in that the number of prebranchial chaetigers is five. However, these species differ considerably from each other in the number of branchiae. Levinsenia flava   has three pairs of very short branchiae; L. gracilis minuta   has 8–11 pairs of long branchiae and L. multibranchiata   has 20–36 pairs of very long branchiae.

Etymology

This species is named in honour of Prof. Dr Muzaffer Demir, who was one of the pioneers of marine biological studies in Turkey.

Distribution

Sea of Marmara and Mediterranean Sea (Levantine and Aegean Seas), between 10 and 200 m depth.

ESFM

Museum of Faculty of Fisheries, Ege University

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Family

Paraonidae

Genus

Levinsenia

Loc

Levinsenia demiri

Çinar, Melih Ertan, Dagli, Ertan & Açik, Sermin 2011
2011
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Levinsenia demiri

Çinar & Dagli & Açik 2011
2011
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Levinsenia demiri

Çinar & Dagli & Açik 2011
2011
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Levinsenia demiri

Çinar & Dagli & Açik 2011
2011
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L. demiri

Çinar & Dagli & Açik 2011
2011
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L. demiri

Çinar & Dagli & Açik 2011
2011
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L. demiri

Çinar & Dagli & Açik 2011
2011
Loc

L. demiri

Çinar & Dagli & Açik 2011
2011
Loc

L. demiri

Çinar & Dagli & Açik 2011
2011
Loc

Levinsenia demiri

Çinar & Dagli & Açik 2011
2011
Loc

Levinsenia demiri

Çinar & Dagli & Açik 2011
2011
Loc

Levinsenia kantauriensis

Aguirrezabalaga and Gil 2009
2009
Loc

L. kantauriensis

Aguirrezabalaga and Gil 2009
2009
Loc

L. kantauriensis

Aguirrezabalaga and Gil 2009
2009
Loc

L. kantauriensis

Aguirrezabalaga and Gil 2009
2009
Loc

L. kantauriensis

Aguirrezabalaga and Gil 2009
2009
Loc

L. kantauriensis

Aguirrezabalaga and Gil 2009
2009
Loc

L. kantauriensis

Aguirrezabalaga and Gil 2009
2009
Loc

L. kantauriensis

Aguirrezabalaga and Gil 2009
2009