A new horned toad species,Boulenophrys elongata sp.nov.,is described from Mt.Lianhua,Huidong County,eastern Guangdong,China.The new species is phylogenetically closest to B.brachykolos,which is restricted to the east ...A new horned toad species,Boulenophrys elongata sp.nov.,is described from Mt.Lianhua,Huidong County,eastern Guangdong,China.The new species is phylogenetically closest to B.brachykolos,which is restricted to the east of the Pearl River Estuary(i.e.,Shenzhen City and Hong Kong SAR).The new species can be distinguished from all recognized congeners by a combination of morphological characters and genetic divergences in the combined mitochondrial 16S,12S and CO1 genes.We recommend the new species be listed as Data Deficient(DD)in the IUCN categorization,pending further investigation.展开更多
A new species of the genus Liurana is described from Medog,Xizang,China,based on morphological and molecular data.Molecular phylogenetic analysis based on the mitochondrial gene COI indicated that this new species rep...A new species of the genus Liurana is described from Medog,Xizang,China,based on morphological and molecular data.Molecular phylogenetic analysis based on the mitochondrial gene COI indicated that this new species represented an independent evolutionary lineage.In addition,the uncorrected genetic distance between the new species and its closest congener species,L.alpina,was 9.6%-9.8%for COI.The new species,Liurana namchabarwa sp.nov.Yu,Lin,Wang,Jiang and Xie,could be distinguished from its congeners by following characters:(1)relatively large body size in this genus,SVL=21.2-23.1 mm in adult males(n=3);(2)relatively narrow head(HL/HW=100.5%-104.8%(n=3));(3)digital disc not expanded;(4)relatively long hindlimbs,with tibiotarsal articulation reaching tip of snout when adpressed.展开更多
The genus Scincella Mittleman,1950,within the family Scincidae,is a diverse group comprising 39 described species.The taxonomy of the genus is complex due to morphological similarities among species,which often obscur...The genus Scincella Mittleman,1950,within the family Scincidae,is a diverse group comprising 39 described species.The taxonomy of the genus is complex due to morphological similarities among species,which often obscures the true extent of biodiversity,resulting in several undescribed species requiring further exploration.In China,particularly within the unique ecosystems of the Hengduan Mountains,the diversity of Scincella is notably underestimated,with only 12 species currently recognized.In the present study,we describe a new species of the genus Scincella,Scincella liangshanensis sp.nov.,from Sichuan Province,Southwest China.Morphological characteristics and phylogenetic analyses revealed that the putative new species is distinct from all other known congeners.This discovery not only expands the known diversity of Scincella but also emphasizes the inadequacies in our current understanding of herpetological diversity in China.The addition of this species to the scientific record highlights the necessity for ongoing biodiversity assessments to uncover hidden species and enhance our understanding of the intricate web of life in one of the world’s biodiversity hotspots.展开更多
羽毛山海绵(My ca le p lum ose)来源的糖多孢菌(S accharop oly sp ora sp.nov SP 2-10)具有诱导肿瘤细胞坏死的活性。本文对其发酵产物的活性部位乙酸乙酯层进行活性追踪分离,共得到7个化合物;利用理化性质和波谱学方法鉴定它们的结...羽毛山海绵(My ca le p lum ose)来源的糖多孢菌(S accharop oly sp ora sp.nov SP 2-10)具有诱导肿瘤细胞坏死的活性。本文对其发酵产物的活性部位乙酸乙酯层进行活性追踪分离,共得到7个化合物;利用理化性质和波谱学方法鉴定它们的结构分别为胆甾醇、邻苯二甲酸二异丁酯、4(2,4-二羟基苯甲酰氨基)苯甲酸、苯丙胺酸、脱氧鸟苷、鸟苷和N-乙酰酪胺;并初步评价上述化合物的抗肿瘤活性,结果表明,邻苯二甲酸二异丁酯显示细胞毒活性。展开更多
报道鸭盲肠杯叶吸虫的生活史，证实纹沼螺 Paraf ossarulus striatulus 和泥鳅 Misgurnus auguillicaudatus 是该吸虫的第一、二中间宿主。虫卵在20～28℃和适当光照条件下21 d 孵出毛蚴；毛蚴侵入纹沼螺后发育为胞蚴和尾蚴，并从62 d ...报道鸭盲肠杯叶吸虫的生活史，证实纹沼螺 Paraf ossarulus striatulus 和泥鳅 Misgurnus auguillicaudatus 是该吸虫的第一、二中间宿主。虫卵在20～28℃和适当光照条件下21 d 孵出毛蚴；毛蚴侵入纹沼螺后发育为胞蚴和尾蚴，并从62 d 开始自螺体向外逸出尾蚴；尾蚴侵入泥鳅体表和肌肉内经10 d 结成囊蚴；家鸭口服囊蚴后3 d ，囊蚴在鸭盲肠内发育为成虫并向外排卵。整个发育周期持续96 d 。展开更多
基金supported by the Project of Background Survey of Biosafety in Guangdong Province(STST-2021-10)the Project of Study on Optimal Allocation and Sustainable Development of Typical Urban and Rural Ecological Resources(K610222062406).
文摘A new horned toad species,Boulenophrys elongata sp.nov.,is described from Mt.Lianhua,Huidong County,eastern Guangdong,China.The new species is phylogenetically closest to B.brachykolos,which is restricted to the east of the Pearl River Estuary(i.e.,Shenzhen City and Hong Kong SAR).The new species can be distinguished from all recognized congeners by a combination of morphological characters and genetic divergences in the combined mitochondrial 16S,12S and CO1 genes.We recommend the new species be listed as Data Deficient(DD)in the IUCN categorization,pending further investigation.
基金supported by the Second Tibetan Plateau Scientific Expedition and Research Program(2019QZKK05010203)the Survey of Wildlife Resources in Key Areas of Xizang(Phase II,ZL202303601)Program of conservation measures study on amphibians and reptiles of Grand Canyon National Nature Reserve,and China Biodiversity Observation Networks(Sino BON).
文摘A new species of the genus Liurana is described from Medog,Xizang,China,based on morphological and molecular data.Molecular phylogenetic analysis based on the mitochondrial gene COI indicated that this new species represented an independent evolutionary lineage.In addition,the uncorrected genetic distance between the new species and its closest congener species,L.alpina,was 9.6%-9.8%for COI.The new species,Liurana namchabarwa sp.nov.Yu,Lin,Wang,Jiang and Xie,could be distinguished from its congeners by following characters:(1)relatively large body size in this genus,SVL=21.2-23.1 mm in adult males(n=3);(2)relatively narrow head(HL/HW=100.5%-104.8%(n=3));(3)digital disc not expanded;(4)relatively long hindlimbs,with tibiotarsal articulation reaching tip of snout when adpressed.
基金funded by the Second Tibetan Plateau Scientific Expedition and Research Program(STEP)(2019QZKK0501)the National Natural Science Foundation of China(32300370,32200363)+2 种基金Sichuan Province Innovative Talent Funding Project for Postdoctoral Fellows(BX202323)Postdoctoral Fellowship Program of CPSF(GZC20232575)Biological Resources Programme,Chinese Academy of Sciences(KFJ-BRP-017-65).
文摘The genus Scincella Mittleman,1950,within the family Scincidae,is a diverse group comprising 39 described species.The taxonomy of the genus is complex due to morphological similarities among species,which often obscures the true extent of biodiversity,resulting in several undescribed species requiring further exploration.In China,particularly within the unique ecosystems of the Hengduan Mountains,the diversity of Scincella is notably underestimated,with only 12 species currently recognized.In the present study,we describe a new species of the genus Scincella,Scincella liangshanensis sp.nov.,from Sichuan Province,Southwest China.Morphological characteristics and phylogenetic analyses revealed that the putative new species is distinct from all other known congeners.This discovery not only expands the known diversity of Scincella but also emphasizes the inadequacies in our current understanding of herpetological diversity in China.The addition of this species to the scientific record highlights the necessity for ongoing biodiversity assessments to uncover hidden species and enhance our understanding of the intricate web of life in one of the world’s biodiversity hotspots.
文摘羽毛山海绵(My ca le p lum ose)来源的糖多孢菌(S accharop oly sp ora sp.nov SP 2-10)具有诱导肿瘤细胞坏死的活性。本文对其发酵产物的活性部位乙酸乙酯层进行活性追踪分离,共得到7个化合物;利用理化性质和波谱学方法鉴定它们的结构分别为胆甾醇、邻苯二甲酸二异丁酯、4(2,4-二羟基苯甲酰氨基)苯甲酸、苯丙胺酸、脱氧鸟苷、鸟苷和N-乙酰酪胺;并初步评价上述化合物的抗肿瘤活性,结果表明,邻苯二甲酸二异丁酯显示细胞毒活性。
文摘报道鸭盲肠杯叶吸虫的生活史，证实纹沼螺 Paraf ossarulus striatulus 和泥鳅 Misgurnus auguillicaudatus 是该吸虫的第一、二中间宿主。虫卵在20～28℃和适当光照条件下21 d 孵出毛蚴；毛蚴侵入纹沼螺后发育为胞蚴和尾蚴，并从62 d 开始自螺体向外逸出尾蚴；尾蚴侵入泥鳅体表和肌肉内经10 d 结成囊蚴；家鸭口服囊蚴后3 d ，囊蚴在鸭盲肠内发育为成虫并向外排卵。整个发育周期持续96 d 。
