This study reviews the Ptilocodiidae from South China Sea, including three species. The diagnoses of the family and each genus are provided. A new genus, Tregouboviopsis Guo, Xu ＆ Huang, gen. nov. is erected, based o...This study reviews the Ptilocodiidae from South China Sea, including three species. The diagnoses of the family and each genus are provided. A new genus, Tregouboviopsis Guo, Xu ＆ Huang, gen. nov. is erected, based on the monotypy, Tregouboviopsis perradialis （Xu, Huang ＆ Du, 2012） comb. nov., which is transferred from the genus Tregoubovia. A free eumedusoid of Hydrichthella ocellata Xu, Huang ＆ Wang, sp. nov. is described in the present paper. A key to known genera of family Ptilocodiidae is presented. All type specimens are deposited in the South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science.展开更多
The present paper reviews all 14 genera and 46 species belonging to the family Pandeidae from the China seas. Two new species, Leuckartiara ruberiverruca Xu, Guo & Du, sp. nov. and Merga longicosta Xu, Huang &...The present paper reviews all 14 genera and 46 species belonging to the family Pandeidae from the China seas. Two new species, Leuckartiara ruberiverruca Xu, Guo & Du, sp. nov. and Merga longicosta Xu, Huang & Wang, sp. nov., from the south-central South China Sea, are described and illustrated. Keys to the known genera of family Pandeidae in the China seas and to all known species of the genus Merga are provided. Other data are briefly summarized to the list of species presented in the family Pandeidae in the China seas. The type species were deposited at the South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science.展开更多
A prevailing,controversial hypothesis is that fishing pressure has played a greater role than climatic and environmental drivers,in changing fish species succession and biomass fluctuation in the South China Sea(SCS)....A prevailing,controversial hypothesis is that fishing pressure has played a greater role than climatic and environmental drivers,in changing fish species succession and biomass fluctuation in the South China Sea(SCS).Based on otter trawl survey data from 1959 to 2010 in the outer Beibu Gulf(OBG),northern SCS,large seasonal and interannual variation is reported for fish species composition,the proportional abundances of dominant taxa,and fish biomass.Generalized additive models are developed to quantify relationships between fish biomass and the external factors of fishing pressure and climate change.Fishing pressure proved to be the main driver of sharp declines in demersal fish stocks,with high-value species being replaced by low-value ones over time.Abrupt decreases in fish biomass during the years of 1993 and 1998 correspond to El Nino events,with climate change possibly the main driver of proportional representation of pelagic species in fisheries trawl catch.The need to differentiate impacts of fishing and environmental drivers on fish species with different life history strategies is stressed to better understand fish community dynamics.展开更多
Daya Bay is a semi-enclosed bay in the South China Sea which is a coastal ecosystem with significant ecological and economic value that is subjected to a variety of anthropogenic disturbances.However,long-term variati...Daya Bay is a semi-enclosed bay in the South China Sea which is a coastal ecosystem with significant ecological and economic value that is subjected to a variety of anthropogenic disturbances.However,long-term variation in fish community structure in this Bay remains uncertain.In this study,we aimed to explore the changing characteristics of fish species composition and community structure in Daya Bay during the past 30 years using data from 1989 to 2021 from bottom trawl surveys and historical literature data.As of now,a total of 544 species of fish have been identified in the Bay,belonging to 24 orders and 125 families.The structure of the fish community in the bay has changed over time.Firstly,there has been a clear decrease in the number of species and biomass of large fish.Secondly,the number of fish constituent orders and families has decreased.Moreover,both the average taxonomic distinctness and variation in taxonomic distinctness decreased from 1989 to 2021.Thirdly,there is low similarity among fishes at different time phases and distinct changes in the composition of dominant species.Present results indicate that the fish community structure in Daya Bay has tended to reflect a decline in diversity,shifts in composition,and shrinking of fish body size in the past 30 years.This study improves our understanding of fish species composition and its drivers over time in Daya Bay,providing important knowledge to support the protection and restoration of this ecosystem and the important ecosystem services it provides.展开更多
基金supported by National Natural Science Foundation of China(41406188)Ministry of Science and Technology(2013BAD13B06)+3 种基金the Scientific Research Funds for Central Non-profit Institutes,South China Sea Fisheries Research Institute,CAFS(2012TS02)Ministry of Agriculture Finance Major Special Project(NFZX2013)the National Basic Research Program of China(2011CB403604)Global Climate Change and Ocean Atmosphere Interaction Research(GASI-03-01-07-01)
文摘This study reviews the Ptilocodiidae from South China Sea, including three species. The diagnoses of the family and each genus are provided. A new genus, Tregouboviopsis Guo, Xu ＆ Huang, gen. nov. is erected, based on the monotypy, Tregouboviopsis perradialis （Xu, Huang ＆ Du, 2012） comb. nov., which is transferred from the genus Tregoubovia. A free eumedusoid of Hydrichthella ocellata Xu, Huang ＆ Wang, sp. nov. is described in the present paper. A key to known genera of family Ptilocodiidae is presented. All type specimens are deposited in the South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science.
基金supported by the Science and Technology Basic Resources Investigation Program of China(2018FY100105)the Guangdong Natural Science Foundation(2018A030313037)+1 种基金the Ministry of Agriculture Major Funding Projects(NFZX2013)Global Climate Change and Ocean Atmosphere Interaction Research:The Marine Biological Sample Museum Upgrade and Expansion(GASI-01-02-04)and Biological Classification System Research
文摘The present paper reviews all 14 genera and 46 species belonging to the family Pandeidae from the China seas. Two new species, Leuckartiara ruberiverruca Xu, Guo & Du, sp. nov. and Merga longicosta Xu, Huang & Wang, sp. nov., from the south-central South China Sea, are described and illustrated. Keys to the known genera of family Pandeidae in the China seas and to all known species of the genus Merga are provided. Other data are briefly summarized to the list of species presented in the family Pandeidae in the China seas. The type species were deposited at the South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science.
基金The Science and Technology Basic Resources Investigation Program of China under contract No.2017FY201405the Open Research Fund Program of Guangxi Key Lab of Mangrove Conservation and Utilization under contract No.GKLMC-201403+2 种基金the National Natural Science Foundation of China under contract No.41666008the Fund of Key Laboratory of Open-Sea Fishery Development,Ministry of Agriculture of China under contract No.LOF 2018-01the Natural Science Foundation of Guangxi under contract No.2016GXNSFDA380035
文摘A prevailing,controversial hypothesis is that fishing pressure has played a greater role than climatic and environmental drivers,in changing fish species succession and biomass fluctuation in the South China Sea(SCS).Based on otter trawl survey data from 1959 to 2010 in the outer Beibu Gulf(OBG),northern SCS,large seasonal and interannual variation is reported for fish species composition,the proportional abundances of dominant taxa,and fish biomass.Generalized additive models are developed to quantify relationships between fish biomass and the external factors of fishing pressure and climate change.Fishing pressure proved to be the main driver of sharp declines in demersal fish stocks,with high-value species being replaced by low-value ones over time.Abrupt decreases in fish biomass during the years of 1993 and 1998 correspond to El Nino events,with climate change possibly the main driver of proportional representation of pelagic species in fisheries trawl catch.The need to differentiate impacts of fishing and environmental drivers on fish species with different life history strategies is stressed to better understand fish community dynamics.
基金funded by Fundamental and Applied Fundamental Research Major Program of Guangdong Province(2019B030302004-05)Science and Technology Planning Project of Guangdong Province(2019B121201001)+2 种基金Central Public-interest Scientific Institution Basal Research Fund,CAFS(2023TD16)Central Public-interest Scientific Institution Basal Research Fund,South China Sea Fisheries Research Institute,CAFS(2021SD04 and 2019TS28)Financial Fund of the Ministry of Agriculture and Rural Affairs,P.R.of China(NFZX2021).
文摘Daya Bay is a semi-enclosed bay in the South China Sea which is a coastal ecosystem with significant ecological and economic value that is subjected to a variety of anthropogenic disturbances.However,long-term variation in fish community structure in this Bay remains uncertain.In this study,we aimed to explore the changing characteristics of fish species composition and community structure in Daya Bay during the past 30 years using data from 1989 to 2021 from bottom trawl surveys and historical literature data.As of now,a total of 544 species of fish have been identified in the Bay,belonging to 24 orders and 125 families.The structure of the fish community in the bay has changed over time.Firstly,there has been a clear decrease in the number of species and biomass of large fish.Secondly,the number of fish constituent orders and families has decreased.Moreover,both the average taxonomic distinctness and variation in taxonomic distinctness decreased from 1989 to 2021.Thirdly,there is low similarity among fishes at different time phases and distinct changes in the composition of dominant species.Present results indicate that the fish community structure in Daya Bay has tended to reflect a decline in diversity,shifts in composition,and shrinking of fish body size in the past 30 years.This study improves our understanding of fish species composition and its drivers over time in Daya Bay,providing important knowledge to support the protection and restoration of this ecosystem and the important ecosystem services it provides.
