Ophelina chaetifera Hartman 1965
Ophelina cf. chaetifera (Hartman, 1965) Figure 10 (A–C) Ammotrypane chaetifera Hartman, 1965: 187, pl. 43. Ophelina chaetifera : Hartman & Fauchald 1971: 131; Barroso & Paiva 2013: 2 –3, fig. 2. Material examined. Oahu, Hawaii: Mamala Bay, Jun/1995, Sta. 12.2.B, 21°13'50.21" N, 157...
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Online Access: | https://dx.doi.org/10.5281/zenodo.5282932 https://zenodo.org/record/5282932 |
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ftdatacite:10.5281/zenodo.5282932 |
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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 Opheliida Opheliidae Ophelina Ophelina chaetifera |
spellingShingle |
Biodiversity Taxonomy Animalia Annelida Polychaeta Opheliida Opheliidae Ophelina Ophelina chaetifera Magalhães, Wagner F. Rizzo, Alexandra E. Bailey-Brock, Julie H. Ophelina chaetifera Hartman 1965 |
topic_facet |
Biodiversity Taxonomy Animalia Annelida Polychaeta Opheliida Opheliidae Ophelina Ophelina chaetifera |
description |
Ophelina cf. chaetifera (Hartman, 1965) Figure 10 (A–C) Ammotrypane chaetifera Hartman, 1965: 187, pl. 43. Ophelina chaetifera : Hartman & Fauchald 1971: 131; Barroso & Paiva 2013: 2 –3, fig. 2. Material examined. Oahu, Hawaii: Mamala Bay, Jun/1995, Sta. 12.2.B, 21°13'50.21" N, 157°57'00.18" W, 481 m (1 spm, BPBM-R 3889); Sta. 3.3.B, 21°14'30.18" N, 157°54'29.75" W, 491 m (2 spms); Sta. 6.1.B, 21°13'19.68" N, 157°57'05.70" W, 498 m (1 spm). Diagnosis. Branchiae present from chaetigers 2–4, absent on mid-body and present again posteriorly for 3–4 chaetigers. Anal tube as long as four last segments with 8–9 transversal markings; 4–5 small and digitiform marginal papillae; unpaired ventral anal cirrus convoluted and thick, inserted ventrally from external body wall. Description. Four complete specimens, ranging from 2.2–5 mm long, 0.2–0.3 mm wide, with 25–28 chaetigers. Body slender, widest on mid-body and tapering towards posterior end (Fig. 10A). Preserved specimens pale yellow lacking distinct pigmentation. Prostomium conical, elongate and tapering to terminal palpode, clavate (Fig. 10A). Nuchal organs oval, postero-lateral. Eyes not observed in any specimen. Pharynx everted in one specimen, globular and lacking tentacles (Fig. 10A). Branchiae present from chaetigers 2–4 (one specimen with branchiae from 2–6), absent on mid-body and present again posteriorly on 3–4 chaetigers, usually ending 3–4 chaetigers before anal tube; anterior branchiae shorter and slenderer than posterior ones; branchiae of posterior end increasing in length on posterior chaetigers but last branchia slightly shorter than preceding ones. Parapodia biramous, chaetae emerging from discrete parapodial lobes anteriorly and lobes becoming slightly more elongate on last ten segments. Two types of chaetae present: simple capillary chaetae in two bundles anteriorly; 4–6 notopodial capillaries and 4–5 neuropodial capillaries, notopodial capillaries slightly longer than neuropodial ones. Simple capillaries replaced by thicker and somewhat spinulose modified capillaries on last 6–8 chaetigers; 3–4 modified capillaries per bundle, becoming progressively longer posteriorly and chaetae of last chaetiger surpassing anal cone. Anal tube as long as four last segments with 8–9 transversal markings and longitudinally grooved (Fig. 10B, C). Unpaired ventral anal cirrus present, inserted ventrally from external body wall; cirrus half the length of anal tube, surpassing about ¼ tube’s length, convoluted and somewhat thick (Fig. 10B, C); 4–5 small and digitiform marginal papillae, difficult to observe. Remarks. The Hawaiian material agrees with the original and subsequent descriptions of O. chaetifera (Hartman 1965; Hartman & Fauchald 1971; Barroso & Paiva 2013). There are variations according to the number of branchial-bearing segments anteriorly but the value of this taxonomic character is poorly understood. Hartman (1965) described the holotype as having five pairs of branchiae (chaetigers 2–4 and in two segments of posterior end). Hartman & Fauchald (1971) described specimens also having five pairs in a different configuration (chaetigers 2 and 3 and three segments of posterior end). Barroso & Paiva (2013) described material from Brazil as having six pairs (chaetigers 2–4 and three segments of posterior end). One specimen from Hawaii presented seven pairs of branchiae (chaetigers 2–4 and four segments of posterior end) and for this reason it was decided to identify it as Ophelina cf. chaetifera . Distribution. Originally described from off New England in 1,50 0–4,667 m and Guianas at 1,500 m (Hartman 1965) and reported to Campos Basin in the South Atlantic, 1,039–1,650 m (Barroso & Paiva 2013). This putative species is recorded for the first time to Hawaii for depths of 481– 498 m. : Published as part of Magalhães, Wagner F., Rizzo, Alexandra E. & Bailey-Brock, Julie H., 2019, Opheliidae (Annelida: Polychaeta) from the western Pacific islands, including five new species, pp. 209-235 in Zootaxa 4555 (2) on page 226, DOI: 10.11646/zootaxa.4555.2.3, http://zenodo.org/record/2624293 : {"references": ["Hartman, O. (1965) Deep-water benthic polychaetous annelids off New England to Bermuda and other North Atlantic areas. Occasional Papers of the Allan Hancock Foundation, 28, 1 - 378.", "Hartman, O. & Fauchald, K. (1971) Deep-water benthic polychaetous annelids off New England to Bermuda and other North Atlantic Areas. Part II. Allan Hancock Monographs in Marine Biology, 6, 1 - 327.", "Barroso, R. & Paiva, P. C. (2013) Deep sea Ophelina (Polychaeta: Opheliidae) from southern Brazil. Marine Biodiversity Records, 6 (e 51), 1 - 5. https: // doi. org / 10.1017 / S 1755267213000201"]} |
format |
Text |
author |
Magalhães, Wagner F. Rizzo, Alexandra E. Bailey-Brock, Julie H. |
author_facet |
Magalhães, Wagner F. Rizzo, Alexandra E. Bailey-Brock, Julie H. |
author_sort |
Magalhães, Wagner F. |
title |
Ophelina chaetifera Hartman 1965 |
title_short |
Ophelina chaetifera Hartman 1965 |
title_full |
Ophelina chaetifera Hartman 1965 |
title_fullStr |
Ophelina chaetifera Hartman 1965 |
title_full_unstemmed |
Ophelina chaetifera Hartman 1965 |
title_sort |
ophelina chaetifera hartman 1965 |
publisher |
Zenodo |
publishDate |
2019 |
url |
https://dx.doi.org/10.5281/zenodo.5282932 https://zenodo.org/record/5282932 |
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ENVELOPE(129.800,129.800,67.867,67.867) |
geographic |
Mamala Pacific |
geographic_facet |
Mamala Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
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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.5282932 https://doi.org/10.11646/zootaxa.4555.2.3 https://doi.org/10.5281/zenodo.2624313 https://doi.org/10.5281/zenodo.5282933 |
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ftdatacite:10.5281/zenodo.5282932 2023-05-15T17:36:59+02:00 Ophelina chaetifera Hartman 1965 Magalhães, Wagner F. Rizzo, Alexandra E. Bailey-Brock, Julie H. 2019 https://dx.doi.org/10.5281/zenodo.5282932 https://zenodo.org/record/5282932 unknown Zenodo http://zenodo.org/record/2624293 http://publication.plazi.org/id/FFDC9120FFD791646258FF8FFFD1FFCE http://zoobank.org/A7CF86E1-C763-4082-B1C2-9B8B66428142 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4555.2.3 http://zenodo.org/record/2624293 http://publication.plazi.org/id/FFDC9120FFD791646258FF8FFFD1FFCE https://dx.doi.org/10.5281/zenodo.2624313 http://zoobank.org/A7CF86E1-C763-4082-B1C2-9B8B66428142 https://dx.doi.org/10.5281/zenodo.5282933 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 Opheliida Opheliidae Ophelina Ophelina chaetifera article-journal ScholarlyArticle Text Taxonomic treatment 2019 ftdatacite https://doi.org/10.5281/zenodo.5282932 https://doi.org/10.11646/zootaxa.4555.2.3 https://doi.org/10.5281/zenodo.2624313 https://doi.org/10.5281/zenodo.5282933 2022-03-10T10:32:01Z Ophelina cf. chaetifera (Hartman, 1965) Figure 10 (A–C) Ammotrypane chaetifera Hartman, 1965: 187, pl. 43. Ophelina chaetifera : Hartman & Fauchald 1971: 131; Barroso & Paiva 2013: 2 –3, fig. 2. Material examined. Oahu, Hawaii: Mamala Bay, Jun/1995, Sta. 12.2.B, 21°13'50.21" N, 157°57'00.18" W, 481 m (1 spm, BPBM-R 3889); Sta. 3.3.B, 21°14'30.18" N, 157°54'29.75" W, 491 m (2 spms); Sta. 6.1.B, 21°13'19.68" N, 157°57'05.70" W, 498 m (1 spm). Diagnosis. Branchiae present from chaetigers 2–4, absent on mid-body and present again posteriorly for 3–4 chaetigers. Anal tube as long as four last segments with 8–9 transversal markings; 4–5 small and digitiform marginal papillae; unpaired ventral anal cirrus convoluted and thick, inserted ventrally from external body wall. Description. Four complete specimens, ranging from 2.2–5 mm long, 0.2–0.3 mm wide, with 25–28 chaetigers. Body slender, widest on mid-body and tapering towards posterior end (Fig. 10A). Preserved specimens pale yellow lacking distinct pigmentation. Prostomium conical, elongate and tapering to terminal palpode, clavate (Fig. 10A). Nuchal organs oval, postero-lateral. Eyes not observed in any specimen. Pharynx everted in one specimen, globular and lacking tentacles (Fig. 10A). Branchiae present from chaetigers 2–4 (one specimen with branchiae from 2–6), absent on mid-body and present again posteriorly on 3–4 chaetigers, usually ending 3–4 chaetigers before anal tube; anterior branchiae shorter and slenderer than posterior ones; branchiae of posterior end increasing in length on posterior chaetigers but last branchia slightly shorter than preceding ones. Parapodia biramous, chaetae emerging from discrete parapodial lobes anteriorly and lobes becoming slightly more elongate on last ten segments. Two types of chaetae present: simple capillary chaetae in two bundles anteriorly; 4–6 notopodial capillaries and 4–5 neuropodial capillaries, notopodial capillaries slightly longer than neuropodial ones. Simple capillaries replaced by thicker and somewhat spinulose modified capillaries on last 6–8 chaetigers; 3–4 modified capillaries per bundle, becoming progressively longer posteriorly and chaetae of last chaetiger surpassing anal cone. Anal tube as long as four last segments with 8–9 transversal markings and longitudinally grooved (Fig. 10B, C). Unpaired ventral anal cirrus present, inserted ventrally from external body wall; cirrus half the length of anal tube, surpassing about ¼ tube’s length, convoluted and somewhat thick (Fig. 10B, C); 4–5 small and digitiform marginal papillae, difficult to observe. Remarks. The Hawaiian material agrees with the original and subsequent descriptions of O. chaetifera (Hartman 1965; Hartman & Fauchald 1971; Barroso & Paiva 2013). There are variations according to the number of branchial-bearing segments anteriorly but the value of this taxonomic character is poorly understood. Hartman (1965) described the holotype as having five pairs of branchiae (chaetigers 2–4 and in two segments of posterior end). Hartman & Fauchald (1971) described specimens also having five pairs in a different configuration (chaetigers 2 and 3 and three segments of posterior end). Barroso & Paiva (2013) described material from Brazil as having six pairs (chaetigers 2–4 and three segments of posterior end). One specimen from Hawaii presented seven pairs of branchiae (chaetigers 2–4 and four segments of posterior end) and for this reason it was decided to identify it as Ophelina cf. chaetifera . Distribution. Originally described from off New England in 1,50 0–4,667 m and Guianas at 1,500 m (Hartman 1965) and reported to Campos Basin in the South Atlantic, 1,039–1,650 m (Barroso & Paiva 2013). This putative species is recorded for the first time to Hawaii for depths of 481– 498 m. : Published as part of Magalhães, Wagner F., Rizzo, Alexandra E. & Bailey-Brock, Julie H., 2019, Opheliidae (Annelida: Polychaeta) from the western Pacific islands, including five new species, pp. 209-235 in Zootaxa 4555 (2) on page 226, DOI: 10.11646/zootaxa.4555.2.3, http://zenodo.org/record/2624293 : {"references": ["Hartman, O. (1965) Deep-water benthic polychaetous annelids off New England to Bermuda and other North Atlantic areas. Occasional Papers of the Allan Hancock Foundation, 28, 1 - 378.", "Hartman, O. & Fauchald, K. (1971) Deep-water benthic polychaetous annelids off New England to Bermuda and other North Atlantic Areas. Part II. Allan Hancock Monographs in Marine Biology, 6, 1 - 327.", "Barroso, R. & Paiva, P. C. (2013) Deep sea Ophelina (Polychaeta: Opheliidae) from southern Brazil. Marine Biodiversity Records, 6 (e 51), 1 - 5. https: // doi. org / 10.1017 / S 1755267213000201"]} Text North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Mamala ENVELOPE(129.800,129.800,67.867,67.867) Pacific |