External ultrastructure of Manayunkia speciosa (Fabriciidae) from Uruguay River, Argentina
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad Nacional Autónoma de México
2013
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| author | Analía Paola |
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| contents | External ultrastructure of Manayunkia speciosa (Fabriciidae) from Uruguay River, Argentina Analía Paola Laura Armendáriz Alberto Rodrigues-Capítulo Biología scanning Polychaeta ultramorphology Manayunkia speciosa external characters The external ultrastructure of Manayunkia speciosa Leidy, 1858 from specimens collected at the lower Uruguay River, South America is described using scanning-electron-microscopy. The branchial crown has a pair of semicircular lateral lobes, a pair of mediodorsal radioles and a pair of medioventral ones. Radiolar surfaces are ciliated. The faecal groove is observed on peristomium middorsally. The anterior margin of the anterior peristomial ring formed a rectangular lobe, with a ciliated band. Chaetal shape exemplifies the basic type of tapering cylinder. Two types of thoracic notochaetae: one wider distally, with a smooth handle, and covered on the surface by denticles, and other are significantly finer at the base and covered by thin structures with a free distal end. These structures were not previously recorded in Fabriciidae. Rows of 3 aligned uncini anteriorly projected are found in the thorax. Each uncinus presents a long manubrium which connects with the crest, extending to a main fang. The teeth of the crest are equal in size. The abdomen present 4 types of neurochaetae: one of small size than the other 3. In the abdomen 10-14 uncini form dense dorsal-transverse-lines. Each uncinus presents a short manubrium. The crest is covered with teeth of similar size. 2013 artículo científico 1870-3453 https://www.redalyc.org/articulo.oa?id=42527032003 en http://www.redalyc.org/revista.oa?id=425 Revista Mexicana de Biodiversidad application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Biodiversidad (México) Num.2 Vol.84 |
| format | Artículo científico |
| id | redalyc_42527032003 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | External ultrastructure of Manayunkia speciosa (Fabriciidae) from Uruguay River, Argentina Analía Paola Biología scanning Polychaeta ultramorphology Manayunkia speciosa external characters External ultrastructure of Manayunkia speciosa (Fabriciidae) from Uruguay River, Argentina Analía Paola Laura Armendáriz Alberto Rodrigues-Capítulo Biología scanning Polychaeta ultramorphology Manayunkia speciosa external characters The external ultrastructure of Manayunkia speciosa Leidy, 1858 from specimens collected at the lower Uruguay River, South America is described using scanning-electron-microscopy. The branchial crown has a pair of semicircular lateral lobes, a pair of mediodorsal radioles and a pair of medioventral ones. Radiolar surfaces are ciliated. The faecal groove is observed on peristomium middorsally. The anterior margin of the anterior peristomial ring formed a rectangular lobe, with a ciliated band. Chaetal shape exemplifies the basic type of tapering cylinder. Two types of thoracic notochaetae: one wider distally, with a smooth handle, and covered on the surface by denticles, and other are significantly finer at the base and covered by thin structures with a free distal end. These structures were not previously recorded in Fabriciidae. Rows of 3 aligned uncini anteriorly projected are found in the thorax. Each uncinus presents a long manubrium which connects with the crest, extending to a main fang. The teeth of the crest are equal in size. The abdomen present 4 types of neurochaetae: one of small size than the other 3. In the abdomen 10-14 uncini form dense dorsal-transverse-lines. Each uncinus presents a short manubrium. The crest is covered with teeth of similar size. 2013 artículo científico 1870-3453 https://www.redalyc.org/articulo.oa?id=42527032003 en http://www.redalyc.org/revista.oa?id=425 Revista Mexicana de Biodiversidad application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Biodiversidad (México) Num.2 Vol.84 |
| title | External ultrastructure of Manayunkia speciosa (Fabriciidae) from Uruguay River, Argentina |
| topic | Biología scanning Polychaeta ultramorphology Manayunkia speciosa external characters |
| url | https://www.redalyc.org/articulo.oa?id=42527032003 |