Dorvillea similis ( Crossland, 1924 )

Çinar, Melih Ertan, 2009, Alien polychaete species (Annelida: Polychaeta) on the southern coast of Turkey (Levantine Sea, eastern Mediterranean), with 13 new records for the Mediterranean Sea, Journal of Natural History 43 (37 - 38), pp. 2283-2328: 2301-2304

publication ID

http://doi.org/ 10.1080/00222930903094654

persistent identifier

http://treatment.plazi.org/id/03BF3042-C863-FFFA-8E84-9C06FC8020AE

treatment provided by

Felipe

scientific name

Dorvillea similis ( Crossland, 1924 )
status

 

Dorvillea similis ( Crossland, 1924)  

( Figure 6 View Figure 6 )

Staurocephalus (Dorvillea) similis Crossland 1924: 100–106   , figs 119–126.

Dorvillea similis   ; Imajima 1992: 143–146, figs 9a–t, 10a–j.

Material examined

ESFM-POL/2005-168, 10 September 2005, I skenderun Bay, D21, 36°20′43″ N, 35°48′08″ E, 25 m, muddy sand, 2 specimens GoogleMaps   ; ESFM-POL/05-585, 11 September 2005, K4, 0.5 m, ropes, 3 specimens   ; ESFM-POL/05-408, 12 September 2005, K 1, 1 m, rocks, 4 specimens   ; ESFM-POL/05-352, 12 September 2005, K5, 0.3– 1 m, rocks, 21 specimens   ; ESFM-POL/2005-406, 13 September 2005, K6, 0.1 m, Cystoseira sp.   , 3 specimens   ; ESFM-POL/05-363, 13 September 2005, K6, 1– 3 m, rocks, 14 specimens   ; ESFM-POL/05-625, 14 September 2005, K9, 0.1– 3 m, port’s piling, 3 specimens   ESFM-POL/05-472, 14 September 2005, K8, 1– 3 m, rocks, 1 specimen   ; ESFM-POL/ 05-530, 15 September 2005, K10, 0–1 m, rocks   ; ESFM-POL/2005-448, 15 September 2005, K10, 0.5 m, J. rubens   , 3 specimens   ; ESFM-POL/2005-557, 18 September 2005, K15, 0.2– 3 m, rocks, 2 specimens   ; ESFM-POL/2005-803, 19 September 2005, K17, 0.1– 3 m, rocks, 25 specimens   ; ESFM-POL/2005-1261, 19 September 2005, K 17, 2 m, Sarcotragus sp.   , 4 specimens   ; ESFM-POL/2005-1198, 19 September 2005, K19, 0.1 m, Brachidontes pharaonis   , 1 specimen   ; ESFM-POL/2005-691, 19 September 2005, K19, 0.1– 5 m, rocks, 68 specimens   ; ESFM-POL/2005-1244, 19 September 2005, K19, 0.1 m, Co. mediterranea   , 68 specimens   ; ESFM-POL/2005-1305, 19 September 2005, K 19, 4 m, Halophila stipulacea   , 5 specimens   ; ESFM-POL/2005-776, 20 September 2005, K22, 0.1– 5 m, rocks, 7 specimens   ; ESFM-POL/2005-1177, 21 September 2005, K 24, 5 m, sand, 1 specimen   ; ESFM-POL/2005-1376, 21 September 2005, K24, 0.5 m, Sphacelaria cirrosa   , 12 specimens   ; ESFM-POL/2005-590, 21 September 2005, K24, 0.1– 5 m, rocks, 41 specimens   ; ESFM-POL/2005-1195, 21 September 2005, K24, 0.5 m, J. rubens   , 2 specimens   ; ESFM-POL/2005-1209, 21 September 2005, K24, 0.5 m, Co. mediterranea   , 9 specimens   ; ESFM-POL/2005-1224, 22 September 2005, K28, 0.1 m, sand, 1 specimen   ; ESFM-POL/2005-637, 22 September 2005, K26, 0.1– 3 m, rocks, 4 specimens   ; ESFM-POL/2005-1283, 22 September 2005, K27, 0.4 m, H. scoparia   , 2 specimens   ; ESFM-POL/2005-1341, 22 September 2005, K 27, 2 m, Sarcotragus sp.   , 1 specimen   ; ESFM-POL/2005-1151, 22 September 2005, K27, 0.1– 5 m, rocks, 1 specimen   ; ESFM-POL/2005-970, 22 September 2005, K27, 0.4 m, J. rubens   , 1 specimen   ; ESFM-POL/2005-2491, 24 September 2005, K 30, 2 m, P. oceanica   , 25 specimens   ; ESFM-POL/2005-2326, 24 September 2005, K30, 0.1 m, H. scoparia   , 17 specimens   ; ESFM-POL/2005-2770, 25 September 2005, K 32, 2 m, rocks, 4 specimens   ; ESFM- POL/2005-2655, 25 September 2005, K33, 0.1 m, Co. mediterranea   , 3 specimens; ESFM-POL/2005-2469, 29 September 2005, K37, 0.2 m, Brachidontes pharaonis   , 17 specimens   ; ESFM-POL/2005-2341, 28 September 2005, K36, 0.3 m, Cy. elegans   , 92 specimens   ; ESFM-POL/2005-2659, 3 October 2005, K44, 0.1 m, Co. mediterranea   , 111 specimens   ; ESFM-POL/2005-2537, 3 October 2005, K 45, 9 m, P. oceanica   , 2 specimens   ; ESFM-POL/2005-2213, 3 October 2005, K44, 0.1 m, J. rubens   , 110 specimens   ; ESFM-POL/2005-2742, 3 October 2005, K45, 0.1– 3 m, rocks, 7 specimens   ; ESFM-POL/2005-2255, 3 October 2005, K45, 0.2 m, Amphiroa rigida   , 17 specimens   ; ESFM-POL/2005-2300, 4 October 2005, K48, 0.2 m, H. scoparia   , 8 specimens   ; ESFM-POL/2005-1525, 5 October 2005, K 50, 5 m, muddy sand, 2 specimens   ; ESFM-POL/2005-2539, 5 October 2005, K 50, 6m, P. oceanica   , 3 specimens   ; ESFM- POL/2005-2288, 5 October 2005, K50, 0.1 m, Cytoseira crinita   , 140 specimens; ESFM-POL/2005-2183, 5 October 2005, K50, 0.1 m, J. rubens   , 27 specimens   ; ESFM- POL/2005-2436, 7 October 2005, K 53, 3 m, Sarcotragus sp.   , 3 specimens; ESFM- POL/2005-2273, 7 October 2005, K53, 0.1 m, Cy. elegans   , 17 specimens; ESFM-POL/ 2005-2374, 7 October 2005, K 53, 3 m, Z. marina, 4 specimens   .

Description

Largest specimen complete, 4.5 mm long, 0.4 mm wide (chaetiger 4), with 43 chaetigers. Ventral surface flattened, dorsal surface slightly domed; body pale brownish, with no colour markings ( Figure 6A View Figure 6 ). Prostomium somewhat rounded, slightly longer than wide; with two reddish eyes, large, in open trapezoidal arrangement; anterior and posterior pairs almost similar in size ( Figure 6A View Figure 6 ). Two antennae emerging just posterolateral sides of anterior eyes, with seven joints. Palps stout, with palpostyles, shorter than antennae. Peristomium large, two or three times larger than anterior segments. Each segment with two ciliary bands. Chaetiger 1 without notopodia, without dorsal cirri, with thick ventral cirri. Subsequent chaetigers with slender dorsal cirri, extending slightly beyond parapodial lobes; with internal acicula; cirrophores large, subrectangular, almost three times longer than cirrostyles; cirrostyles subtriangular. Neuropodia of chaetiger 1 with rudimentary subtriangular pre- and postchaetal lobes. Neuropodia of anterior chaetigers well developed, with bifid prechaetal lobe and distally pointed postchaetal lobe. Posterior neuropodia becoming slender, with pointed pre- and postchaetal lobes. Supra-acicular neurochaetae with two types; one placed most superiorly, numbering two per fascicle, simple, slen- der, serrate with bidentate tip ( Figure 6B View Figure 6 ); other numbering two or three per fascicle, simple, cultriform, serrated subdistally, with bidentate tip ( Figure 6D View Figure 6 ); furcate chaeta absent. Subacicular part of parapodia with 10 falcigers; blades strongly bidentate, 20–12.5 µm long, with thin spines along cutting edge, with thin hoods; shafts densely serrated ( Figure 6C View Figure 6 ). Notopodial aciculum slender, neuropodial aciculum simple, stout. Posterior parapodia with one cultriform chaeta and eight falcigers; blades strongly bidentate, 22.5–10 µm long. Dorsal cirri becoming shorted in posterior parapodia, as long as parapodial lobes. Pygidium with two pairs of anal cirri; dorsal anal cirri almost four times longer than ventral ones, wrinkled. Ventral anal cirri digitiform. Anus placed dorsally. Maxillary has symmetrical, fused- to oval-shaped base, serrate along anterior margins. Maxillae with 24 free denticles in superior row, 32 free denticles in inferior row. Each basal plate of superior row with nine teeth. Anterior free denticles prolonged, distally curved, with main fang, one lateral, three medial teeth. Middle free denticles with strongly curved main fang, one lateral, two medial teeth ( Figure 6G View Figure 6 ). Posterior free denticles short, with large main fang, one lateral, three medial teeth ( Figure 6E View Figure 6 ). Each basal plate of inferior row with seven teeth. Middle free denticles with main fang, two lateral teeth, three medial teeth ( Figure 6F View Figure 6 ). Anterior free denticles strongly prolonged, with main fang, two lateral, four medial teeth. Mandibles symmetrical, fused medially, each with four to six small free denticles anteriorly, 10 small teeth on inner margin ( Figure 6H View Figure 6 ).

Reproduction

Oocytes were found in the coelomic cavity of a specimen at K15 ( ESFM-POL /2005- 557): large, almost ovoid, having a maximum diameter of 190 µm (mean 163.4 ± 3.7 µm, n = 25).

Distribution

Dorvillea similis   was previously reported from the Suez Canal, Indian Ocean and Pacific Ocean ( Imajima 1992). This species is being newly reported from the Mediterranean Sea. It seems to have been well established along the Levantine coast of Turkey, as it is almost present in all shallow-water habitats sampled. As this species was originally described from the Suez Canal by Crossland (1924), it is most probably a Lessepsian migrant. However, its occurrence on the other coasts of the Levantine Sea (i.e. Egypt, Israel, Lebanon, Cyprus) should be checked.

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Eunicida

Family

Dorvilleidae

Genus

Dorvillea

Loc

Dorvillea similis ( Crossland, 1924 )

Çinar, Melih Ertan 2009
2009
Loc

Dorvillea similis

Imajima M 1992: 143
1992
Loc

Staurocephalus (Dorvillea) similis

Crossland C 1924: 106
1924