Baseodiscus sp.
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publication ID |
https://doi.org/ 10.1093/zoolinnean/zlac015 |
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publication LSID |
lsid:zoobank.org:pub:78C56409-FCCF-4116-8D8C-FF66B247C56C |
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persistent identifier |
https://treatment.plazi.org/id/038A8132-EE4B-ED67-FCC0-CA31FB6EFC9D |
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treatment provided by |
Plazi |
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scientific name |
Baseodiscus sp. |
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Baseodiscus sp. DNA105581: Andrade et al., 2012: 157.
Z o o b a n k r e g i s t r a t i o n: u r n: l s i d: z o o b a n k. org:act: BBF6E937-7250-495D-B216-EE5284EA04C5.
Type material: Holotype, MCZ IZ- 135319 (morphological specimen); MCZ DNA 105581 View Materials (extracted DNA); 5 October 2009, about 800 m depth, off the coast of Vigo (42°42′43″N, 11°49′53″W), Pontevedra, Galicia, Spain, collected by G. Giribet at station 27-AT of the DIVA-ARTABRIA II Expedition. GoogleMaps
Sequences: From the holotype: JF293052 View Materials , 18S (1770 bp) ; HQ856862 View Materials , 28S (2570 bp) ; JF277568 View Materials , 16S (502 bp) ; HQ848588 View Materials , COI (657 bp). Determined by Andrade et al. (2012) and deposited in GenBank as derived from Baseodiscus sp. 1 SA-2011 .
Description: Background body colour whitish, dorsally tinged with light brown ( Figs 3G View Figure 3 , 7F, G View Figure 7 ). Everted proboscis white in colour ( Fig. 3H View Figure 3 ).
Distribution: So far known only from the type locality, sublittoral, off Galicia, Spain, in the Atlantic Ocean (present study).
Etymology: The new specific name is a noun in the genitive case, in honour of Professor Victoriano Urgorri (University of Santiago de Compostela, Spain), who organized the DIVA-ARTABRIA II Expedition, in which the type material was collected.
Remarks: Baseodiscus urgorrii represents the fourth sublittoral congener recorded from the north-east Atlantic, after Baseodiscus alpha ( Joubin, 1902) , Baseodiscus abyssorum (Vaillant & Joubin in Joubin, 1902) and Baseodiscus filholi ( Joubin, 1902) . These can be distinguished by body colour and markings, except for B. alpha (see below).
Baseodiscus alpha View in CoL , originally established as Eupolia alpha Joubin, 1902 View in CoL , is herein regarded as a nomen dubium, because the taxon was established without any information on external features in the living state; consequently, any future material would hardly be identifiable with certainty as this species. In addition, both the exact type locality and, more importantly, depth information for this species are uncertain due to a discrepancy in the sampling data. Joubin (1902: 205) noted that the type material was obtained in dredge haul 71 (LXXI) of the French steamer Talisman View in CoL from a depth of 640 m off the coast of Sudan (Côte du Soudan) on 9 July 1883. According to Parfait (1884: 540) the dredge haul 71 of the Talisman 1883 View in CoL expedition was taken on 8 July at a depth of 102 m off Western Sahara (26°04′N, 17°05′W); the word ‘Sudan’ historically referred to the region south of the Sahara, stretching from West Africa to eastern Central Africa ( Parrinder, 1959: 131). Again, according to Parfait (1884: 538), among the 156 dredging sites of the Talisman 1883 View in CoL expedition, the dredge haul at 640 m was number 66 off Western Sahara (26°18′N, 72°12′W). In any case, either the dredge-haul number (71) or the depth (640 m) provided by Joubin (1902) was probably incorrect.
Baseodiscus abyssorum View in CoL differs from B. urgorrii in having red body colour. Originally described as Eupolia abyssorum Joubin, 1902 View in CoL , this species was based on three worm fragments procured among material dredged from the Bay of Biscay during a cruise of the French steamer Travailleur in 1880. The type locality of B. abyssorum View in CoL is either 43°38′25″N, 6°28′40″W, 1353 m depth (dredge haul 6) or 43°35′30″N, 6°25′00″W, 1107 m depth (dredge haul 7). This ambiguity stems from possible confusion by Joubin (1902: 206), who noted ‘Dragage no VII D; Profondeur: 1353 m’ as the locality for the species, while the actual depth of dredge haul 7 seems to have been 1107 m (e.g. MilneEdwards, 1882: 126; Locard, 1898: 5). The external features of the species in the living state were described from coloured drawings of two fragments made by Léon Vaillant and later passed on to Louis Joubin. One fragment was uniformly bright red in colour; the other had transverse yellow rings spaced 2–3 mm apart on the same bright-red background. Joubin (1902) suspected that these represented the ventral and dorsal surfaces of the worm, respectively. Joubin (1902) ascribed Vaillant (in parentheses) as the author of the species name. Therefore, according to Recommendation 51E of the Code ( ICZN, 1999), the authors of the species should be stated as ‘Vaillant & Joubin in Joubin, 1902 ’.
Baseodiscus filholi View in CoL differs from B. urgorrii in having striated markings on the body. Baseodiscus filholi View in CoL was originally established as Eupolia filholi View in CoL by Joubin (1902) based on a specimen obtained in dredge haul 23 of the Talisman 1883 View in CoL expedition at a depth of 120 m on 15 June. According to Parfait (1884: 534), the locality was off Morocco (33°16′N, 11°13′W), with the bottom sediment composed of rocks and shells. The body markings suggest that B. filholi View in CoL may be synonymous with B. delineatus View in CoL or B. curtus View in CoL .
| MCZ |
Museum of Comparative Zoology |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Baseodiscus sp.
| Kajihara, Hiroshi, Abukawa, Shushi & Chernyshev, Alexei V. 2022 |
Baseodiscus sp.
| Andrade SCS & Strand M & Schwartz M & Chen H-X & Kajihara H & von Dohren J & Sun S-C & Junoy J & Thiel M & Norenburg JL & Turbeville JM & Giribet G & Sundberg P 2012: 157 |