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Mediomastus chinensis sp. nov., a new species of Capitellidae (Annelida: Polychaeta) from the southeast coast of China
LIN Junhui, WANG Jianjun, ZHENG Fengwu
2018, 37(10): 126-129. doi: 10.1007/s13131-018-1316-z
Keywords: Mediomastus, Capitellidae, polychaeta, new species, taxonomy, China
Mediomastus is a common genus around the world, and Chinese specimens used to be identified as M. californiensis Hartman. In this study, 118 Mediomastus specimens collected from four localities along the southeast coast of China were examined. They belonged to an unknown species. We treat them as a new species, described herein. The new species is characterized as follows: (1) chaetigers 1–9 biannulate with chaetal fascicles at midsegment, thereafter multiannulate with chaetal fascicles posterior to midsegment; (2) parapodial ridges on posterior abdomen; (3) possession of bilimbate capillary chaetae on chaetigers 1–4; (4) thoracic hooks with long, straight shaft, hood length about 3–5 times width; (5) abdominal hooks shorter, with developed shoulder and distinct constriction, markedly different from those in thorax; (6) unique staining pattern with methyl green. The present study indicated that Mediomastus species inhabiting Chinese waters might be misidentified as M. californiensis, and that Mediomastus chinensis sp. nov. is widely distributed along the southeast coast of China.
A new species of Leodamas Kinberg, 1866 (Polychaeta: Orbiniidae) from the Yellow Sea and the East China Sea
SUN Yue, SUI Jixing, LI Xinzheng
2018, 37(10): 130-135. doi: 10.1007/s13131-018-1313-2
Keywords: new species, Orbiniidae, Polychaeta, Leodamas, taxonomy
Based on polychaete specimens collected from coastal areas of China in 1959, a new species of the family Orbiniidae, Leodamas sinensis sp. nov. is described in the present paper. The new species can be distinguished from its cogeners by the combination of following characters: branchiae present from chaetiger 5; each thoracic neuropodial postchaetal lobe possessing broad tori, with a digital to triangular-shaped papilla at its midlength; 4 or 5 vertical rows of uncini and one posterior row of accompany capillaries in thoracic neuropodia; acicula present in both abdominal notopodia and neuropodia, slightly or distinctly projecting. A key to all known species of the genus is provided.
Sabaco sinicus, a new species of Maldanidae (Annelida: Polychaeta) from Chinese coast waters
WANG Yueyun, LI Xinzheng
2018, 37(10): 136-139. doi: 10.1007/s13131-018-1314-1
Keywords: Polychaeta, Maldanidae, Maldaninae, taxonomy, China seas
Sabaco sinicus sp. nov. is described based on material collected from Chinese coast. It has been misidentified as Asychis gangeticus Fauvel, 1932 since Uschakov and Wu (1962). Here, we recognized it as a new species based on combination of the following characters: dark-brown pigmentation spots on nuchal grooves and first three chaetigers; glandular pattern on chaetigers 4–6; preanal achaetigerous segments absent; anal plaque trumpet-shaped with a disc-shaped dorsal lobe; notochaetae consisting of geniculate capillaries and fine capillaries with or without spinose spiral bands; neurochaetae presented as a single row of rostrate uncini. Asychis gangeticus differ from the new species in having no pigmentations on body and a triangular dorsal lobe of anal plaque. Distribution region of this species have moved northward significantly from sea area south of Changjiang Estuary since the 1950s.
A new meiofauna polychaeta Pholoe (Polychaeta, Sigalionidae)from the Huanghai Sea (Yellow Sea)
Wu Baoling, Zhao Jing, Ding Zhihu
1994(1): 129-132.
In this study of meiofauna polychaeta from the Huanghai Sea, a previously undescribed species belonging to Pholoe has been found and described. 13 species of Pholoe were reported in the past. The new species differs from the other species of the genus Pholoe in having elytra with radiating rows of small surface papillae.
Are assemblages of the fireworm Hermodice carunculata enhanced in sediments beneath offshore fish cages?
Rodrigo Riera, Oscar Pérez, Myriam Rodríguez, Eva Ramos, Óscar Monterroso
2014, 33(4): 108-111. doi: 10.1007/s13131-014-0449-y
Keywords: aquaculture, organic enrichment, environmental impact, Polychaeta, Hermodice carunculata, Tenerife, Canary Islands, Atlantic Ocean
Abundances of the fireworm Hermodice carunculata were counted through a monitoring assessment study of fish cages in Barranco Hondo (NE Tenerife). Seven campaigns were conducted from November 2007 to June 2010 and temporal variations were found, as well as differences among sampling stations. The polychaete H. carunculata obtained its highest abundance in sediments beneath fish cages throughout the study period. Thus, the assemblages of this omnivorous species were favoured by the presence of fish cages.
Re-evaluation of Rostraria bierii Tokioka, 1970 (Annelida) from Seto, Japan as a magelonid, with a review of the Magelonidae of the western Pacific
Mortimer Kate, Mills Kimberley, Gil João
2022, 41(3): 61-69. doi: 10.1007/s13131-021-1824-0  Published:2022-03-01
Keywords: Polychaeta, Amphinomida, Magelonidae, Magelona, Octomagelona, western Pacific, identification key, Cape Setozaki
The identity of Rostraria bierii, originally described as a larval amphinomid from Cape Setozaki, Pacific coast of Japan, is investigated. Based on the original description and illustrations, reinterpretations conclude the “larva” to represent a partial juvenile or adult magelonid specimen, broken after the first chaetiger. The original figures are compared with several known magelonid species to justify the new placement. The authors suggest the supposed amphinomid larva is a Magelonidae taxon inquirendum. The identity of the species is discussed in line with the current knowledge of the Magelonidae in the western Pacific and a key to all known species within the region is provided to aid identifications. Current gaps in our taxonomic knowledge of the Magelonidae of the western Pacific are highlighted and discussed.
Confounding response of macrofauna from a confluence of impacts: brine and sewage pollution
Rodrigo Riera, Fernando Tuya, Myriam Rodríguez, Óscar Monterroso, Eva Ramos
2013, 32(10): 74-81. doi: 10.1007/s13131-013-0368-3
Keywords: macrofauna, amphipoda, polychaeta, brine, sewage, Canary Islands
Throughout the shores of the world,a confluence of different sources of pollution is common,e.g.,through outlets releasing brine,industrial,and domestic sewage.In this study,we assessed whether a combined disposal of domestic sewage and brine altered the patterns of abundance and assemblage structure of subtidal macrofauna inhabiting sandy seabeds on the south coast of Gran Canaria(Canary Islands,NE Atlantic Ocean).Samples were collected in two surveys(May 2008 and January 2009)at three distances(0,15,and 30 m)away from the discharge point.Macrofaunal abundances showed different patterns with varying proximity from the disposal point in the two surveys.In May 2008,lower abundances were observed at 0 m(53.89±46.82 ind.)than at 15 m(120±91.7 ind.)and 30 m(283.89±189.33 ind.)away from the disposal point.In January 2009,however,higher abundances were observed at 0 m(131.33±58.69 ind.)than at 30 m(100±24.44 ind.)and 15 m(84.78±58.39 ind.)away from the disposal point.Significant differences in macrofaunal assemblage structure were found with varying proximity from the discharge point in both surveys.The effect of proximity from the disposal point was confounded by changes in sedimentary composition between surveys,which contributed to explain differences in macrofaunal abundances and assemblage structure with varying proximity from the discharge point.As a result,confounding drivers of macrofaunal assemblage structure,here,changes in sediment composition,accounted for changes in macrofaunal abundances and assemblage structure with varying proximity from a combined disposal point of brine and sewage.
A new family of polychaeta-Euniphysidae
Shen Shoupeng, Wu Baoling
1991(1): 129-140.
Euniphysa,originally a genus of the family Eunicidae,was erected by Wesenberg-Lund in 1949,and for a longtime there has been only one species in this genus.The present report is based on our samples collected from the South China Sea,and we consider that the differences between Euniphysa and Eunice are very significant:Five occipital tentacles distributed unequidistantly; the jaw consists of 6 pairs of maxillary plates; the body may be divided into anterior region and posterior region,etc.Therefore we suggest that Euniphysa should be separated from Eunicidae,and become a new family Euniphysi-dae.At present this family includes 3 genera,namely,Euniphysa,Paraeuniphysa and 1 new genira Heterophysa; Totally there are 7 species,including 3 new species and 1 new combination species.
Two new species of Exogone and Sphaerosyllis (Polychaeta, Syllidae)from the Huanghai Sea
Zhao Jing, Wu Baoling
1992(1): 131-137.
In a study of meiofauna polychaete from the Huanghai Sea,two new species belonging to Exogane and Sphaerosyllis were found and described in this paper.The two new species differ from the other species in the two genera mainly by the dorsal cirri,chaetation and distribution of papillae.
A new species of interstitial polychaete Hesionura shandongensis sp. n. (Polychaeta, Phyllodocidae) from Yantai, the Huanghai Sea
Zhao Jing, Wu Baoling
1991(3): 447-450.
In a study of meiofauna polychaete from the Huanghai Sea, a previously undescribed species belonging to Hesionura has been found and described. The new species differs from the other species of the genus Hesionura mainly by the chaetation.
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