鸟类多样性是生物多样性的重要组成部分,相对完整的鸟类资源名录对于理解地区生物多样性及资源分布现状是十分必要的.《宁夏脊椎动物志》出版至今的30余年里,陆续有宁夏鸟类分布新记录报道,在《中国鸟类分类与分布名录》(第四版)新的现...鸟类多样性是生物多样性的重要组成部分,相对完整的鸟类资源名录对于理解地区生物多样性及资源分布现状是十分必要的.《宁夏脊椎动物志》出版至今的30余年里,陆续有宁夏鸟类分布新记录报道,在《中国鸟类分类与分布名录》(第四版)新的现代鸟类分类系统下,宁夏的鸟类资源缺乏最新的资源名录,这给相关研究工作带来不便.依据《中国鸟类分类与分布名录》(第四版)分类系统,以《宁夏脊椎动物志》中鸟类种类统计为基础,结合宁夏鸟类新记录文献资料,对宁夏的鸟类资源进行重新整理统计,形成最新的宁夏鸟类资源名录.结果表明,截至2023年6月底,宁夏现有野生鸟类21目68科204属419种(446种及亚种),有国家一级重点保护鸟类19种、国家二级重点保护鸟类79种.在区系组成上,古北种鸟类有290种(占总种数的69.21%)、东洋种鸟类有45种(占总种数的10.74%)、广布种有84种(占总种数的20.05%),古北种鸟类占绝对优势.被世界自然保护联盟(International Union for Conservation of Nature,IUCN)评估列入红色濒危物种名录的极危(CR)有2种、濒危(EN)有5种、易危(VU)有13种、近危(NT)有14种;被列入濒危野生动植物种国际贸易公约(The Convention on International Trade in Endangered Species of Wild Fauna and Flora,CITES)附录I的有7种、附录II的有21种.鸟类物种多样性指数中属间的多样性(G指数)为4.9731,科间的多样性(F指数)为39.3543,G-F指数为0.8736,显示出宁夏鸟类的物种多样性丰富.展开更多
One specimen belonging to the family Comatellinae was collected from the Zhenbei Seamount(332.5–478.2 m)in the South China Sea in July 2022.Based on the morphological characters,the specimen was identified as Palaeoc...One specimen belonging to the family Comatellinae was collected from the Zhenbei Seamount(332.5–478.2 m)in the South China Sea in July 2022.Based on the morphological characters,the specimen was identified as Palaeocomatella hiwia McKnight,1977.It is first recorded from China Sea and redescribed in detail.This specimen differs from the original description from New Zealand for never showing syzygy at br4+5 or br5+6 on interior and br1+2 on exterior arms.However,it is much conform to the redescription to specimens from Indonesia,with only differences in position of the second syzygy and distalmost pinnule comb.Specimen is deposited in the Institute of Oceanology,Chinese Academy of Sciences.Phylogenetic analyses based on the mitochondrial c oxidase subunit I(COI)and 16S rRNA genes indicated that P.hiwia was nested within the tribe Phanogeniini and clustered with Aphanocomaster pulcher.Furthermore,P.hiwia showed same morphological features in terms of mouth placement,comb location,and number of comb teeth rows as other genera of Phanogeniini.Therefore,we suggest that the genus Palaeocomatella should be put in the tribe Phanogeniini.展开更多
Island ecosystems support diverse aquatic invertebrate communities comprising endemic taxa.Documentation of existing species is important for conservation.In this study,a checklist of marine opisthobranch from the Rep...Island ecosystems support diverse aquatic invertebrate communities comprising endemic taxa.Documentation of existing species is important for conservation.In this study,a checklist of marine opisthobranch from the Republic of Mauritius is presented.A combination of benthic surveys(50 m×5 m in triplicates),rover diving techniques and photo documentation were used over two years(2018–2020)within 35 sheltered and unsheltered lagoons.Morphological and molecular analysis were used for identification.Species composition within sheltered and unsheltered areas in Mauritius was estimated using the Bray-Curtis similarity.The checklist featured 117 species belonging to 61 genera and 28families,of which 13 are new records.The findings increased the knowledge of opisthobranch diversity from the Mauritius by 15.4%.Among the listed species,the distribution range of Cyerce nigra,Actinocyclus papillatus,and Phyllidia picta extended from the Western Pacific to the South Western Indian Ocean.Molecular analysis of the undescribed Gymnodoris sp.showed it resembled Gymnodoris sp.from Hawaii and were different by a genetic distance value of 10.6%.The species richness and evenness were higher within the sheltered regions of Mauritius which harboured the food resource of opisthobranch.These areas as compared to unsheltered regions were heavily populated,suggesting the probable influence of wave actions on opisthobranch diversity and abundance.The order Nudibranchia was reported as most speciose,with 86 species.The Sacoglossa and Nudibranchia were observed only on macroalgae and sponges respectively.High abundance was also recorded on shipwrecks which are the most common form of artificial reefs.With the inclusion of observations from previous studies,201species belonging to 94 genera and 36 families are now known from the Mauritius.展开更多
Benthodytes occidentpalauta sp.nov.was collected from the Kyushu-Palau Ridge at a depth of 5481 m in 2021.This new species is characterized by a gelatinous body wall,violet skin,six pairs of dorsal papillae,and a roug...Benthodytes occidentpalauta sp.nov.was collected from the Kyushu-Palau Ridge at a depth of 5481 m in 2021.This new species is characterized by a gelatinous body wall,violet skin,six pairs of dorsal papillae,and a rough mid-ventral surface without tube feet.The dorsal deposits are rod-shaped and tripartite.Two types of papillae deposits as crosses with four arms with central bipartite apophyses.Ventral deposits are rods.Tentacle ossicles are rod-shaped with end protrusions.Gonad deposits are rodshaped,tripartite,and cross-shaped.The phylogenetic analyses based on cytochrome oxidase subunit 1(COI)and 16S individually and a concatenated dataset of COI and 16S genes of this species support that B.occidentpalauta sp.nov.belongs to Benthodytes.展开更多
通过第三方空气质量检测、鼠胚试验以及新旧实验室半年的临床数据对比,评估我院新建胚胎实验室环境及培养体系是否达到体外培养胚胎的质量控制要求。方法 (1)聘请第三方检测公司对我院新建实验室进行空气质量检测。(2)统计分析体内受精...通过第三方空气质量检测、鼠胚试验以及新旧实验室半年的临床数据对比,评估我院新建胚胎实验室环境及培养体系是否达到体外培养胚胎的质量控制要求。方法 (1)聘请第三方检测公司对我院新建实验室进行空气质量检测。(2)统计分析体内受精卵体外培养和完全体外受精培养两种试验方法获得的2-细胞胚胎的囊胚形成率。(3)回顾性分析新旧实验室半年的临床数据,评估新建实验室环境是否影响胚胎发育及妊娠结局。结果 (1)第三方检测公司检测结果显示我院新建实验室空气质量各项指标均达标。(2)体内受精试验总共获得389枚2-细胞胚胎,形成371枚囊胚,囊胚形成率95.37%;体外受精试验总共培养249枚2-细胞胚胎,形成227枚囊胚,囊胚形成率91.16%。(3)新旧实验室半年的D3可用胚胎率(86.97% vs 87.01%)、囊胚形成率(70.94% vs 71.88%)、临床妊娠率(62.98% vs 69.07%)及早期流产率(8.74% vs 6.67%)均无统计学差异(P>0.05)。结论 我院新建胚胎实验室环境及培养系统稳定,可用于继续开展人类辅助生殖技术胚胎培养,空气质量检测结合鼠胚试验可以作为新建实验室的一种有效评估方法。展开更多
文摘鸟类多样性是生物多样性的重要组成部分,相对完整的鸟类资源名录对于理解地区生物多样性及资源分布现状是十分必要的.《宁夏脊椎动物志》出版至今的30余年里,陆续有宁夏鸟类分布新记录报道,在《中国鸟类分类与分布名录》(第四版)新的现代鸟类分类系统下,宁夏的鸟类资源缺乏最新的资源名录,这给相关研究工作带来不便.依据《中国鸟类分类与分布名录》(第四版)分类系统,以《宁夏脊椎动物志》中鸟类种类统计为基础,结合宁夏鸟类新记录文献资料,对宁夏的鸟类资源进行重新整理统计,形成最新的宁夏鸟类资源名录.结果表明,截至2023年6月底,宁夏现有野生鸟类21目68科204属419种(446种及亚种),有国家一级重点保护鸟类19种、国家二级重点保护鸟类79种.在区系组成上,古北种鸟类有290种(占总种数的69.21%)、东洋种鸟类有45种(占总种数的10.74%)、广布种有84种(占总种数的20.05%),古北种鸟类占绝对优势.被世界自然保护联盟(International Union for Conservation of Nature,IUCN)评估列入红色濒危物种名录的极危(CR)有2种、濒危(EN)有5种、易危(VU)有13种、近危(NT)有14种;被列入濒危野生动植物种国际贸易公约(The Convention on International Trade in Endangered Species of Wild Fauna and Flora,CITES)附录I的有7种、附录II的有21种.鸟类物种多样性指数中属间的多样性(G指数)为4.9731,科间的多样性(F指数)为39.3543,G-F指数为0.8736,显示出宁夏鸟类的物种多样性丰富.
基金the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB42000000)the Key Program of National Natural Science Foundation of China(No.41930533)+1 种基金the Chinese Academy of Sciences Pioneer Hundred Talents Program(to Nansheng CHEN)the Taishan Scholar Project Special Fund(to Nansheng CHEN)。
文摘One specimen belonging to the family Comatellinae was collected from the Zhenbei Seamount(332.5–478.2 m)in the South China Sea in July 2022.Based on the morphological characters,the specimen was identified as Palaeocomatella hiwia McKnight,1977.It is first recorded from China Sea and redescribed in detail.This specimen differs from the original description from New Zealand for never showing syzygy at br4+5 or br5+6 on interior and br1+2 on exterior arms.However,it is much conform to the redescription to specimens from Indonesia,with only differences in position of the second syzygy and distalmost pinnule comb.Specimen is deposited in the Institute of Oceanology,Chinese Academy of Sciences.Phylogenetic analyses based on the mitochondrial c oxidase subunit I(COI)and 16S rRNA genes indicated that P.hiwia was nested within the tribe Phanogeniini and clustered with Aphanocomaster pulcher.Furthermore,P.hiwia showed same morphological features in terms of mouth placement,comb location,and number of comb teeth rows as other genera of Phanogeniini.Therefore,we suggest that the genus Palaeocomatella should be put in the tribe Phanogeniini.
文摘Island ecosystems support diverse aquatic invertebrate communities comprising endemic taxa.Documentation of existing species is important for conservation.In this study,a checklist of marine opisthobranch from the Republic of Mauritius is presented.A combination of benthic surveys(50 m×5 m in triplicates),rover diving techniques and photo documentation were used over two years(2018–2020)within 35 sheltered and unsheltered lagoons.Morphological and molecular analysis were used for identification.Species composition within sheltered and unsheltered areas in Mauritius was estimated using the Bray-Curtis similarity.The checklist featured 117 species belonging to 61 genera and 28families,of which 13 are new records.The findings increased the knowledge of opisthobranch diversity from the Mauritius by 15.4%.Among the listed species,the distribution range of Cyerce nigra,Actinocyclus papillatus,and Phyllidia picta extended from the Western Pacific to the South Western Indian Ocean.Molecular analysis of the undescribed Gymnodoris sp.showed it resembled Gymnodoris sp.from Hawaii and were different by a genetic distance value of 10.6%.The species richness and evenness were higher within the sheltered regions of Mauritius which harboured the food resource of opisthobranch.These areas as compared to unsheltered regions were heavily populated,suggesting the probable influence of wave actions on opisthobranch diversity and abundance.The order Nudibranchia was reported as most speciose,with 86 species.The Sacoglossa and Nudibranchia were observed only on macroalgae and sponges respectively.High abundance was also recorded on shipwrecks which are the most common form of artificial reefs.With the inclusion of observations from previous studies,201species belonging to 94 genera and 36 families are now known from the Mauritius.
基金the National Key R&D Program of China(No.2022YFC2803902)the Project of State Key Laboratory of Satellite Ocean Environment Dynamics,Second Institute of Oceanography,MNR(No.SOEDZZ2002)the Scientific Research Fund of the Second Institute of Oceanography,MNR(No.SZ2101)。
文摘Benthodytes occidentpalauta sp.nov.was collected from the Kyushu-Palau Ridge at a depth of 5481 m in 2021.This new species is characterized by a gelatinous body wall,violet skin,six pairs of dorsal papillae,and a rough mid-ventral surface without tube feet.The dorsal deposits are rod-shaped and tripartite.Two types of papillae deposits as crosses with four arms with central bipartite apophyses.Ventral deposits are rods.Tentacle ossicles are rod-shaped with end protrusions.Gonad deposits are rodshaped,tripartite,and cross-shaped.The phylogenetic analyses based on cytochrome oxidase subunit 1(COI)and 16S individually and a concatenated dataset of COI and 16S genes of this species support that B.occidentpalauta sp.nov.belongs to Benthodytes.
文摘通过第三方空气质量检测、鼠胚试验以及新旧实验室半年的临床数据对比,评估我院新建胚胎实验室环境及培养体系是否达到体外培养胚胎的质量控制要求。方法 (1)聘请第三方检测公司对我院新建实验室进行空气质量检测。(2)统计分析体内受精卵体外培养和完全体外受精培养两种试验方法获得的2-细胞胚胎的囊胚形成率。(3)回顾性分析新旧实验室半年的临床数据,评估新建实验室环境是否影响胚胎发育及妊娠结局。结果 (1)第三方检测公司检测结果显示我院新建实验室空气质量各项指标均达标。(2)体内受精试验总共获得389枚2-细胞胚胎,形成371枚囊胚,囊胚形成率95.37%;体外受精试验总共培养249枚2-细胞胚胎,形成227枚囊胚,囊胚形成率91.16%。(3)新旧实验室半年的D3可用胚胎率(86.97% vs 87.01%)、囊胚形成率(70.94% vs 71.88%)、临床妊娠率(62.98% vs 69.07%)及早期流产率(8.74% vs 6.67%)均无统计学差异(P>0.05)。结论 我院新建胚胎实验室环境及培养系统稳定,可用于继续开展人类辅助生殖技术胚胎培养,空气质量检测结合鼠胚试验可以作为新建实验室的一种有效评估方法。
文摘机场鸟类群落的多样性及变化是机场鸟击防控关注的重点,了解机场飞行区鸟类多样性与周边景观格局的关系可以为机场鸟击防控提供科学指导。2022年1—12月,每月对成都天府国际机场东、西跑道的鸟类进行调查,运用景观指数量化两跑道外1 km、2 km、3 km 3个尺度内的景观特征,以研究两跑道外不同范围景观格局对场内鸟类组成和多样性的影响。结果发现:(1)西跑道的鸟类多样性和3个尺度的景观多样性均较东跑道高;(2)西跑道林鸟和水鸟类群的多样性显著高于东跑道;(3)在3个尺度范围内,东跑道外农田的平均斑块面积均显著大于西跑道,东跑道农田对整体景观具有较强的主导性。推测两跑道外农田生境的差异可能对整体景观格局产生了影响,从而造成了东、西跑道鸟类多样性的差异。研究揭示场外景观格局对场内鸟类群落的塑造有重要作用,为机场外的景观管理提供了建议,与此同时还要加强重点区域和重要季节的巡查,以提前化解鸟击风险。
