Modern accumulations of genetic data offer unprecedented opportunities for understanding the systematic classification and origins of specific groups of organisms.The genus Sinocyclocheilus is among the most cave abun...Modern accumulations of genetic data offer unprecedented opportunities for understanding the systematic classification and origins of specific groups of organisms.The genus Sinocyclocheilus is among the most cave abundant genera in Cyprinidae,with 76 recognized species,belonging to 4 species groups.Recent phylogenetic studies have shown that the classification of species groups within the genus Sinocyclocheilus remains controversial.In this study,we constructed a sequence supermatrix of 26 species from 4 species groups of the genus Sinocyclocheilus using the mitochondrial genome to reveal phylogenetic relationships,historical biogeography and patterns of species diversification in the genus Sinocyclocheilus.Phylogenetic analysis strongly supports the monophyletic groups of the 3 species groups(S.jii,S.cyphotergous,and S.tingi groups)except the S.angularis group.Phylogenetic analysis showed that S.anshuiensis and S.microphthalmus,which were recognized as numbers of S.angularis group,formed a strongly supported independent clade.Therefore,we propose a new species group,the S.microphthalmus group,which contains S.anshuiensis and S.microphthalmus.Biogeographic reconstruction suggests that the living Sinocyclocheilus may have originated in north-central Guangxi at the late Eocene and dispersed outward after a vicariance at 32.31 Million years ago(Ma).Early diversification is focused on the late Oligocene(ca.25 Ma),which is related to the second uplift of the Qinghai−Tibetan Plateau and the lateral extrusion of the Indochina at the Oligocene/Miocene boundary.Our results suggest that 2 uplifts of the Qinghai−Tibetan Plateau and climate change in the Miocene may have influenced the diversification of the Sinocyclocheilus lineage.展开更多
In September and October 2015, a new species of the family Nemacheilidae, Triplophysa tianxingensis sp. nov., was discovered from underground water in Qiubei County, Yunnan Province, China. It can be distinguished fro...In September and October 2015, a new species of the family Nemacheilidae, Triplophysa tianxingensis sp. nov., was discovered from underground water in Qiubei County, Yunnan Province, China. It can be distinguished from all other troglobiotic Triplophysa species occurring in Yunnan by the following combination of characters： eyes small, a little degenerated; barbels longer; ventral profiles greatly convex; pectoral fin short, attaining a third of the distance from the pectoral-fin base to pelvic fin base; body with many brown blotches; caudal peduncle with fin fold; caudal fin shallowly forked, and free posterior chamber of swim bladder cylindrical.展开更多
描记采于罗平县—地下河金线鲃属一新种,命名为瓦状角金线鲃Sinocyclocheilus tileihornesMao,Lu et Li,sp.nov。新种外形与犀角金线鲃S.rhinocerous Li et Tao(1994)相近,但新种无侧线鳞,角顶部分叉呈瓦状,腹鳍较长,后伸超过肛门或达...描记采于罗平县—地下河金线鲃属一新种,命名为瓦状角金线鲃Sinocyclocheilus tileihornesMao,Lu et Li,sp.nov。新种外形与犀角金线鲃S.rhinocerous Li et Tao(1994)相近,但新种无侧线鳞,角顶部分叉呈瓦状,腹鳍较长,后伸超过肛门或达到臀鳍起点可与之相区分。展开更多
描记采于广西壮族自治区的金线鲃属鱼类二新种,以采集地乡镇名命名泗孟金线鲃(Sinocyclocheilus simengensis Li,Wu,Li et Lan sp.nov.)和平山金线鲃(Sinocyclocheilus pingshanensis Li,Li,Lan et Wu sp.nov.).
2015年10月,在云南省丘北县温浏乡一喀斯特洞穴因山洪爆发形成的小湖泊中,捕到1尾无眼盲金线鲃标本.经研究系一新种,以头上额前有一短粗凸起命名额凸盲金线鲃Sinocyclocheilus convexiforeheadus Li Yang et Li sp,nov.新种与透明金线鲃...2015年10月,在云南省丘北县温浏乡一喀斯特洞穴因山洪爆发形成的小湖泊中,捕到1尾无眼盲金线鲃标本.经研究系一新种,以头上额前有一短粗凸起命名额凸盲金线鲃Sinocyclocheilus convexiforeheadus Li Yang et Li sp,nov.新种与透明金线鲃S.hylinus Chen et Yang(1994)、鹰喙角金线鲃S.aquihornes Li et Yang(2007)的区别是,额部凸起短粗VS棒状长角或鹰喙状长角,胸鳍不达腹鳍起点VS胸鳍超过腹鳍起点,背鳍起点在腹鳍起点之前VS背鳍起点在腹鳍起点之后.展开更多
旨在描述采集于云南省文山壮族苗族自治州丘北县树皮乡小新寨村龙山脚下一喀斯特洞穴出水口的金线鲃属鱼类一新种。新种以采集标本的地名命名为龙山金线鲃(Sinocyclocheilus longshanensis Li et Wu sp.nov.)。经形态学鉴定,该新种背鳍...旨在描述采集于云南省文山壮族苗族自治州丘北县树皮乡小新寨村龙山脚下一喀斯特洞穴出水口的金线鲃属鱼类一新种。新种以采集标本的地名命名为龙山金线鲃(Sinocyclocheilus longshanensis Li et Wu sp.nov.)。经形态学鉴定,该新种背鳍具有7根分枝鳍条,末根不分枝鳍条后缘呈锯齿状;眼正常;口亚上位;背部隆起;体侧分布有不规则黑褐色圆斑;侧线孔59~62。新种与背部隆起,体侧分布有不规则黑褐色圆斑,口端位、侧线孔81~88的麻花金线鲃(Sinocyclocheilus maculatus)能明显区分;与口亚上位,与背部无明显隆起,通体金黄色,侧线鳞71~81的阳宗金线鲃(Sinocyclocheilus yangzongensis)亦能明显区分。根据以上形态学特征组合,亦可将该新种与金线鲃属其他种明显区别。展开更多
基金This work was supported by the Top Discipline Construction Program of Guizhou Province(Qianjaokeyan[2019]No.125)the programs of the Strategic Priority Research Program B of the Chinese Academy of Sciences(CAS)(No.XDB31000000)+1 种基金the National Animal Collection Resource Center,China(No.2005DKA21402)the Application of Amphibian Natural Antioxidant Peptides as Cosmetic Raw Material Antioxidants(No.QKZYD[2020]4002).
文摘Modern accumulations of genetic data offer unprecedented opportunities for understanding the systematic classification and origins of specific groups of organisms.The genus Sinocyclocheilus is among the most cave abundant genera in Cyprinidae,with 76 recognized species,belonging to 4 species groups.Recent phylogenetic studies have shown that the classification of species groups within the genus Sinocyclocheilus remains controversial.In this study,we constructed a sequence supermatrix of 26 species from 4 species groups of the genus Sinocyclocheilus using the mitochondrial genome to reveal phylogenetic relationships,historical biogeography and patterns of species diversification in the genus Sinocyclocheilus.Phylogenetic analysis strongly supports the monophyletic groups of the 3 species groups(S.jii,S.cyphotergous,and S.tingi groups)except the S.angularis group.Phylogenetic analysis showed that S.anshuiensis and S.microphthalmus,which were recognized as numbers of S.angularis group,formed a strongly supported independent clade.Therefore,we propose a new species group,the S.microphthalmus group,which contains S.anshuiensis and S.microphthalmus.Biogeographic reconstruction suggests that the living Sinocyclocheilus may have originated in north-central Guangxi at the late Eocene and dispersed outward after a vicariance at 32.31 Million years ago(Ma).Early diversification is focused on the late Oligocene(ca.25 Ma),which is related to the second uplift of the Qinghai−Tibetan Plateau and the lateral extrusion of the Indochina at the Oligocene/Miocene boundary.Our results suggest that 2 uplifts of the Qinghai−Tibetan Plateau and climate change in the Miocene may have influenced the diversification of the Sinocyclocheilus lineage.
基金supported by the National Science Foundation of China(31272335,30970326)National Science and Technology Support Program(2013BAB06B03)+1 种基金China Huaneng Group Science&Technology Program(HNKJ13-H17-03)Power Construction Corporation of China Science & Technology Program:Ecological Safety Monitoring System Research in Hydroelectric Developed Watershed(DJ-ZDXM-2014-03)
文摘In September and October 2015, a new species of the family Nemacheilidae, Triplophysa tianxingensis sp. nov., was discovered from underground water in Qiubei County, Yunnan Province, China. It can be distinguished from all other troglobiotic Triplophysa species occurring in Yunnan by the following combination of characters： eyes small, a little degenerated; barbels longer; ventral profiles greatly convex; pectoral fin short, attaining a third of the distance from the pectoral-fin base to pelvic fin base; body with many brown blotches; caudal peduncle with fin fold; caudal fin shallowly forked, and free posterior chamber of swim bladder cylindrical.
文摘描记采于罗平县—地下河金线鲃属一新种,命名为瓦状角金线鲃Sinocyclocheilus tileihornesMao,Lu et Li,sp.nov。新种外形与犀角金线鲃S.rhinocerous Li et Tao(1994)相近,但新种无侧线鳞,角顶部分叉呈瓦状,腹鳍较长,后伸超过肛门或达到臀鳍起点可与之相区分。
基金National Science Foundation of China(31272335,30970326)National Science and Technology Support Program(2013BAB06B03)China Huaneng Group Science&Technology Program(HNKJ13-H17-03)
文摘描记采于广西壮族自治区的金线鲃属鱼类二新种,以采集地乡镇名命名泗孟金线鲃(Sinocyclocheilus simengensis Li,Wu,Li et Lan sp.nov.)和平山金线鲃(Sinocyclocheilus pingshanensis Li,Li,Lan et Wu sp.nov.).
文摘2015年10月,在云南省丘北县温浏乡一喀斯特洞穴因山洪爆发形成的小湖泊中,捕到1尾无眼盲金线鲃标本.经研究系一新种,以头上额前有一短粗凸起命名额凸盲金线鲃Sinocyclocheilus convexiforeheadus Li Yang et Li sp,nov.新种与透明金线鲃S.hylinus Chen et Yang(1994)、鹰喙角金线鲃S.aquihornes Li et Yang(2007)的区别是,额部凸起短粗VS棒状长角或鹰喙状长角,胸鳍不达腹鳍起点VS胸鳍超过腹鳍起点,背鳍起点在腹鳍起点之前VS背鳍起点在腹鳍起点之后.
文摘旨在描述采集于云南省文山壮族苗族自治州丘北县树皮乡小新寨村龙山脚下一喀斯特洞穴出水口的金线鲃属鱼类一新种。新种以采集标本的地名命名为龙山金线鲃(Sinocyclocheilus longshanensis Li et Wu sp.nov.)。经形态学鉴定,该新种背鳍具有7根分枝鳍条,末根不分枝鳍条后缘呈锯齿状;眼正常;口亚上位;背部隆起;体侧分布有不规则黑褐色圆斑;侧线孔59~62。新种与背部隆起,体侧分布有不规则黑褐色圆斑,口端位、侧线孔81~88的麻花金线鲃(Sinocyclocheilus maculatus)能明显区分;与口亚上位,与背部无明显隆起,通体金黄色,侧线鳞71~81的阳宗金线鲃(Sinocyclocheilus yangzongensis)亦能明显区分。根据以上形态学特征组合,亦可将该新种与金线鲃属其他种明显区别。
