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Effects of diesel oil on the polychaete Annelida in model benthic ecosystem
Tang Senming, Chen Xiaolin, Zhuang Dongfa, Wu Shengsan, Lin Yu, Cai Ziping, Zheng Fengwu
1994(3): 425-431.
Keywords: Polychaete, benthic ecosystem, model experiment, diesel oil, pollution effect
An experiment about the effect of diesel oil pollution on the model benthic ecosystem was conducted in the land-based tank at the 3rd Institute of Oceanography,State Oceanic Administration,in Xiamen,added with No.0 diesel oil at concentrations of 5,25,125,625 mg/dm3 in water of series sub-tanks for 16 h.The changes in polychaete community were studied in the period of two weeks with results that though all concentrations did not basically altered the population structure and composition,the total biomass decreased significantly and individuals tended to be smaller in size.The average weight of individual decreased with the increase of diesel pollutant stress.
Polychaete ecology in west of Taiwan Strait and around Taiwan Shoal
Wu Qiquan
1996(4): 515-527.
Keywords: Polychaete, ecology
This paper deals with, comprehensively, for the first time, the species composition, number and its distributional characteristics of polychaetes in the soft bottom in the west of the Taiwan Stnut. This paper is sorted out on the basis of the data from the polychaete samples collected with quantitative benthic grab and quantitative trawl in the biological seasons in four cruises including 220 stations from 1984 to 1985. The survey areas were located from the Minjiang Estuary in the north to the south of the Taiwan Shoal in the south (22°23. 1'-25°43.0'N, 116°30.8'-120° 30.7'E).The survey stations are shown in Fig.1.
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.
mRNA expression of CYP4 in marine polychaete Marphysa sanguinea in response to benzo[a]pyrene
Wanjuan Li, Huan Zhao, Fuyang Ba, Shaojuan Li, Xiupeng Sun, Dazuo Yang, Yibing Zhou
2019, 38(6): 46-53. doi: 10.1007/s13131-019-1362-1  Published:2019-06-01
Keywords: Marphysa sanguinea, CYP4, benzo[a]pyrene, toxicity effect
Rapid amplification of cDNA ends (RACE) and real-time polymerase chain reaction (RT-PCR) were carried out to analyze the CYP4 gene expression in polychaete Marphysa sanguinea exposed to benzo[a]pyrene (BaP) in this study. The full length of MsCYP4 cDNA was 2 470 bp, and it encoded 512 amino acids. The deduced amino acid sequence showed 47% identity with CYP4F from frog Xenopus tropicalis and shared high homology with other known CYP4 sequences. To analyse the role of CYP4 in protecting M. sanguinea from BaP exposure, three BaP groups were established: 0.5, 5 and 50 μg/L. Polychaetes were sampled after 3, 7 and 12 d. At 0.5 μg/L, the effect of BaP on MsCYP4 gene expression increased with time prolonged. MsCYP4 gene expression curve showed U-shaped trend with time in 5 and 50 μg/L BaP groups. Therefore, MsCYP4 gene may play an important role in maintaining the balance of cellular metabolism and protecting M. sanguinea from BaP toxicity.
A new record of Auchenoplax Ehlers, 1887 (Polychaeta: Ampharetidae) from the East China Sea
SUI Jixing, LI Xinzheng
2018, 37(10): 145-147. doi: 10.1007/s13131-018-1312-3
Keywords: polychaete, Auchenoplax, taxonomy, East China Sea
A new record of the ampharetid genus Auchenoplax, A. worsfoldi Jirkov and Leontovich, 2013, is reported and described from the East China Sea. The specimens agree well with the original description of Auchenoplax worsfoldi with two pairs of branchiae, two thoracic uncinigers with enlarged neuropodia and 12 abdominal uncinigerous segments. The present specimens have long and filiform branchiae extending to thoracic chaetiger 9, which was not included in the original description. This is the first record of this species in Chinese waters.
ULTRASTRUCTURAL CHANGES OF THE OOGENESIS IN THE POLYCHAETE Capitella capitata (Fabricius)
WU BAOLING, QIAN PEIYUAN
1987(2): 257-265.
The ultrastructural changes of the oogenesis in Capitella capitata are described. The developing oocytes undergo obvious ultrastructural changes during the process of oogenesis, which include:the formation or differentiation of endoplasmic reticulum, Golgi complex, endocytotic pits, vesicles and the surface of the cell. The evidence demonstrates that these changes are connected with the process of yolk synthesis which occures largely within the ovary by means of autosynthesis and heterosynthesis. The results show that the Golgi complex and the endoplasmic reticulum within both the oocytes and the follicle cells are involved in the yolk synthesis and transformation of probable yolk precursors. In summary, the similarities of oogenesis in the sibling species of Capitella suggest that there is a very close evolutionary relationship between them.
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.
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.
Notes Marine biofouling in Hong Kong: a review
Zongguo Huang
2003(3): 467-482.
Keywords: Biofouling communities, distribution, Hong Kong waters
From 1980 to 1998, biofouling communities in Hong Kong waters, the Zhujiang RiverEstuary and the Mirs Bay were studied and a total of 610 samples. The samples were collected from vessels, buoys, piers and cages. Totally, 340 species (see Appendix I) have been recorded and identified, six of which are new. At the same time, research on the biology of the cirripede, bryozoan, polychaete and mollusc communities were also conducted. Twenty-three related papers have been published. This review summarizes works in Hong Kong over past twenty years, and some unpublished data are also reported.
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.
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