Ophryotrocha costlowi Paxton & Åkesson, 2010, sp. nov.
Ophryotrocha costlowi sp. nov. Figure 1 A; Table 1 Ophryotrocha costlowi nom. nud. Åkesson, 1978: 575; Pleijel & Eide 1996; Dahlgren et al. 2001; Åkesson & Paxton 2005; Wiklund et al. 2009. Material examined. Type material: Holotype (AM W 36856), complete female specimen, 2.9 mm long, 0.35 m...
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2010
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Online Access: | https://dx.doi.org/10.5281/zenodo.6207370 https://zenodo.org/record/6207370 |
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ftdatacite:10.5281/zenodo.6207370 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Annelida Polychaeta Eunicida Dorvilleidae Ophryotrocha Ophryotrocha costlowi |
spellingShingle |
Biodiversity Taxonomy Animalia Annelida Polychaeta Eunicida Dorvilleidae Ophryotrocha Ophryotrocha costlowi Paxton, Hannelore Åkesson, Bertil Ophryotrocha costlowi Paxton & Åkesson, 2010, sp. nov. |
topic_facet |
Biodiversity Taxonomy Animalia Annelida Polychaeta Eunicida Dorvilleidae Ophryotrocha Ophryotrocha costlowi |
description |
Ophryotrocha costlowi sp. nov. Figure 1 A; Table 1 Ophryotrocha costlowi nom. nud. Åkesson, 1978: 575; Pleijel & Eide 1996; Dahlgren et al. 2001; Åkesson & Paxton 2005; Wiklund et al. 2009. Material examined. Type material: Holotype (AM W 36856), complete female specimen, 2.9 mm long, 0.35 mm wide without parapodia (preserved) for 15 chaetigers; allotype (AM W 36867), complete male specimen, 1.7 mm long, 0.25 mm wide without parapodia (preserved) for 12 chaetigers; 10 paratypes (AM W 36868); 10 paratypes (SMNH T- 8028); cultured from specimens collected at Pivers Island, near Duke University Marine Laboratory, Beaufort, North Carolina, USA, in 1974. Other material: Live cultures from same collection. Description. Length of most live adults 2–3 mm (12–14 chaetigers), maximum length 4 mm (18 chaetigers). Live animals (Fig. 1 A) translucent, preserved opaque white. Pigmentation consisting only of very small lateral red spots on some chaetigers. Prostomium anteriorly rounded, with pair of short, ovate antennae; palps absent; two eyes medially connected. Two peristomial achaetous segment-like rings. Parapodia uniramous, lacking dorsal and ventral cirri, with dorsal protrusion, with retractile ventral lobe; 2–3 supra-acicular simple chaetae, 3–4 subacicular heterogomph falcigers and inferiormost simple chaeta; distal part of simple chaetae and blades of falcigers coarsely serrated. Pair of pygidial cirri present, pygidial median stylus absent in adults. Rosette glands, one per segment, present mid-dorsally on posteriormost segments of mature animals, up to five in males and females. Mandibles with elongate shafts and bifid cutting plates with 23–26 tiny pointed teeth at anterior edge. Maxillary apparatus of P- and K-type in both sexes, with falcate P 1 -forceps, bidentate P 2 -forceps, K-forceps right bidentate, left falcate. Reproduction and development. Gonochoristic; chromosomes 2 n = 6; diameter of eggs 125 µm; tubular egg masses; released larvae without parapodia, with long pygidial median stylus. Etymology. This species is named in honour of Dr. John D. Costlow Jr., former Director of Duke University Marine Laboratory, who facilitated the work of B.Å. in all possible ways during his stay at the laboratory. Remarks. Åkesson (1978) reported the discovery of Ophryotrocha costlowi , sp. nov. from Beaufort and Morehead City, North Carolina, and the aquaria at the Bermuda Biological Station. However, the name was invalid as he did not designate type specimens, which is herewith rectified. The new species was originally identified through crossbreeding experiments with other members of the O. labronica group (Åkesson 1978; Åkesson & Paxton 2005) and has been confirmed by gene sequence studies (Dahlgren et al. , 2001; Wiklund et al. 2009). According to the crossbreeding experiments it is most closely related to O. labronica, from which it can be distiguished only by the following small differences: rosette glands in O. costlowi number up to five in both sexes, while in O. labronica they are less numerous in females, reaching a maximum of three. The small teeth at the margin of the mandibular plate range from 23– 26 in the former and 25–28 in the latter. See Table 1 for comparisons with other species. Distribution. North Atlantic: Morehead City and Beaufort, North Carolina, USA; Bermuda. : Published as part of Paxton, Hannelore & Åkesson, Bertil, 2010, The Ophryotrocha labronica group (Annelida: Dorvilleidae) — with the description of seven new species, pp. 1-24 in Zootaxa 2713 on page 6, DOI: 10.5281/zenodo.199650 : {"references": ["Akesson, B. (1978) A new Ophryotrocha species of the labronica group (Polychaeta, Dorvilleidae) revealed in crossbreeding experiments. In ' Marine Organisms' (ed. B. Battaglia & J. Beardmore). 573 - 590. Plenum Press, New York.", "Pleijel, F. & Eide, R. (1996) The phylogeny of Ophryotrocha (Dorvilleidae: Eunicida: Polychaeta). Journal of Natural History, 30, 647 - 659.", "Dahlgren, T. G., Akesson, B., Schander, C. Halanych, K. & Sundberg, P. (2001) Molecular phylogeny of the model annelid Ophryotrocha. Biological Bulletin, 201, 193 - 203.", "Akesson, B. & Paxton, H. (2005) Biogeography and incipient speciation in Ophryotrocha labronica (Polychaeta, Dorvilleidae). Marine Biology Research, 1, 127 - 139.", "Wiklund, H., Glover, A. G. & Dahlgren, T. G. (2009) Three new species of Ophryotrocha (Annelida: Dorvilleidae) from a whale-fall in the North-East Atlantic. Zootaxa, 2228, 43 - 56."]} |
format |
Text |
author |
Paxton, Hannelore Åkesson, Bertil |
author_facet |
Paxton, Hannelore Åkesson, Bertil |
author_sort |
Paxton, Hannelore |
title |
Ophryotrocha costlowi Paxton & Åkesson, 2010, sp. nov. |
title_short |
Ophryotrocha costlowi Paxton & Åkesson, 2010, sp. nov. |
title_full |
Ophryotrocha costlowi Paxton & Åkesson, 2010, sp. nov. |
title_fullStr |
Ophryotrocha costlowi Paxton & Åkesson, 2010, sp. nov. |
title_full_unstemmed |
Ophryotrocha costlowi Paxton & Åkesson, 2010, sp. nov. |
title_sort |
ophryotrocha costlowi paxton & åkesson, 2010, sp. nov. |
publisher |
Zenodo |
publishDate |
2010 |
url |
https://dx.doi.org/10.5281/zenodo.6207370 https://zenodo.org/record/6207370 |
long_lat |
ENVELOPE(174.900,174.900,-83.350,-83.350) ENVELOPE(-54.667,-54.667,-63.400,-63.400) ENVELOPE(6.250,6.250,62.517,62.517) |
geographic |
Beardmore Bertil Eide |
geographic_facet |
Beardmore Bertil Eide |
genre |
North Atlantic North East Atlantic |
genre_facet |
North Atlantic North East Atlantic |
op_relation |
http://publication.plazi.org/id/FFEC7F1AFFD7FF85DF6FFFDEB86AAF65 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.5281/zenodo.199650 http://publication.plazi.org/id/FFEC7F1AFFD7FF85DF6FFFDEB86AAF65 https://dx.doi.org/10.5281/zenodo.199651 https://dx.doi.org/10.5281/zenodo.6207371 https://zenodo.org/communities/biosyslit |
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Open Access Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC0 |
op_doi |
https://doi.org/10.5281/zenodo.6207370 https://doi.org/10.5281/zenodo.199650 https://doi.org/10.5281/zenodo.199651 https://doi.org/10.5281/zenodo.6207371 |
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spelling |
ftdatacite:10.5281/zenodo.6207370 2023-05-15T17:37:29+02:00 Ophryotrocha costlowi Paxton & Åkesson, 2010, sp. nov. Paxton, Hannelore Åkesson, Bertil 2010 https://dx.doi.org/10.5281/zenodo.6207370 https://zenodo.org/record/6207370 unknown Zenodo http://publication.plazi.org/id/FFEC7F1AFFD7FF85DF6FFFDEB86AAF65 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.5281/zenodo.199650 http://publication.plazi.org/id/FFEC7F1AFFD7FF85DF6FFFDEB86AAF65 https://dx.doi.org/10.5281/zenodo.199651 https://dx.doi.org/10.5281/zenodo.6207371 https://zenodo.org/communities/biosyslit Open Access Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 info:eu-repo/semantics/openAccess CC0 Biodiversity Taxonomy Animalia Annelida Polychaeta Eunicida Dorvilleidae Ophryotrocha Ophryotrocha costlowi article-journal ScholarlyArticle Taxonomic treatment Text 2010 ftdatacite https://doi.org/10.5281/zenodo.6207370 https://doi.org/10.5281/zenodo.199650 https://doi.org/10.5281/zenodo.199651 https://doi.org/10.5281/zenodo.6207371 2022-04-01T11:47:40Z Ophryotrocha costlowi sp. nov. Figure 1 A; Table 1 Ophryotrocha costlowi nom. nud. Åkesson, 1978: 575; Pleijel & Eide 1996; Dahlgren et al. 2001; Åkesson & Paxton 2005; Wiklund et al. 2009. Material examined. Type material: Holotype (AM W 36856), complete female specimen, 2.9 mm long, 0.35 mm wide without parapodia (preserved) for 15 chaetigers; allotype (AM W 36867), complete male specimen, 1.7 mm long, 0.25 mm wide without parapodia (preserved) for 12 chaetigers; 10 paratypes (AM W 36868); 10 paratypes (SMNH T- 8028); cultured from specimens collected at Pivers Island, near Duke University Marine Laboratory, Beaufort, North Carolina, USA, in 1974. Other material: Live cultures from same collection. Description. Length of most live adults 2–3 mm (12–14 chaetigers), maximum length 4 mm (18 chaetigers). Live animals (Fig. 1 A) translucent, preserved opaque white. Pigmentation consisting only of very small lateral red spots on some chaetigers. Prostomium anteriorly rounded, with pair of short, ovate antennae; palps absent; two eyes medially connected. Two peristomial achaetous segment-like rings. Parapodia uniramous, lacking dorsal and ventral cirri, with dorsal protrusion, with retractile ventral lobe; 2–3 supra-acicular simple chaetae, 3–4 subacicular heterogomph falcigers and inferiormost simple chaeta; distal part of simple chaetae and blades of falcigers coarsely serrated. Pair of pygidial cirri present, pygidial median stylus absent in adults. Rosette glands, one per segment, present mid-dorsally on posteriormost segments of mature animals, up to five in males and females. Mandibles with elongate shafts and bifid cutting plates with 23–26 tiny pointed teeth at anterior edge. Maxillary apparatus of P- and K-type in both sexes, with falcate P 1 -forceps, bidentate P 2 -forceps, K-forceps right bidentate, left falcate. Reproduction and development. Gonochoristic; chromosomes 2 n = 6; diameter of eggs 125 µm; tubular egg masses; released larvae without parapodia, with long pygidial median stylus. Etymology. This species is named in honour of Dr. John D. Costlow Jr., former Director of Duke University Marine Laboratory, who facilitated the work of B.Å. in all possible ways during his stay at the laboratory. Remarks. Åkesson (1978) reported the discovery of Ophryotrocha costlowi , sp. nov. from Beaufort and Morehead City, North Carolina, and the aquaria at the Bermuda Biological Station. However, the name was invalid as he did not designate type specimens, which is herewith rectified. The new species was originally identified through crossbreeding experiments with other members of the O. labronica group (Åkesson 1978; Åkesson & Paxton 2005) and has been confirmed by gene sequence studies (Dahlgren et al. , 2001; Wiklund et al. 2009). According to the crossbreeding experiments it is most closely related to O. labronica, from which it can be distiguished only by the following small differences: rosette glands in O. costlowi number up to five in both sexes, while in O. labronica they are less numerous in females, reaching a maximum of three. The small teeth at the margin of the mandibular plate range from 23– 26 in the former and 25–28 in the latter. See Table 1 for comparisons with other species. Distribution. North Atlantic: Morehead City and Beaufort, North Carolina, USA; Bermuda. : Published as part of Paxton, Hannelore & Åkesson, Bertil, 2010, The Ophryotrocha labronica group (Annelida: Dorvilleidae) — with the description of seven new species, pp. 1-24 in Zootaxa 2713 on page 6, DOI: 10.5281/zenodo.199650 : {"references": ["Akesson, B. (1978) A new Ophryotrocha species of the labronica group (Polychaeta, Dorvilleidae) revealed in crossbreeding experiments. In ' Marine Organisms' (ed. B. Battaglia & J. Beardmore). 573 - 590. Plenum Press, New York.", "Pleijel, F. & Eide, R. (1996) The phylogeny of Ophryotrocha (Dorvilleidae: Eunicida: Polychaeta). Journal of Natural History, 30, 647 - 659.", "Dahlgren, T. G., Akesson, B., Schander, C. Halanych, K. & Sundberg, P. (2001) Molecular phylogeny of the model annelid Ophryotrocha. Biological Bulletin, 201, 193 - 203.", "Akesson, B. & Paxton, H. (2005) Biogeography and incipient speciation in Ophryotrocha labronica (Polychaeta, Dorvilleidae). Marine Biology Research, 1, 127 - 139.", "Wiklund, H., Glover, A. G. & Dahlgren, T. G. (2009) Three new species of Ophryotrocha (Annelida: Dorvilleidae) from a whale-fall in the North-East Atlantic. Zootaxa, 2228, 43 - 56."]} Text North Atlantic North East Atlantic DataCite Metadata Store (German National Library of Science and Technology) Beardmore ENVELOPE(174.900,174.900,-83.350,-83.350) Bertil ENVELOPE(-54.667,-54.667,-63.400,-63.400) Eide ENVELOPE(6.250,6.250,62.517,62.517) |