In vitro culture of embryonic hearts from guppy fish (Poecilia reticulata)

Forty embryonic hearts were taken out by anatomical needle from denuded embryos of the ovoviviparity guppy fish that were dechorioned by mechanic method or by trypsin digestion, and werein vitro cultured. In the cultured hearts, 80% have maintained beatingin vitro for 4 weeks, and the longest record for beating was 142 d. Owing to fish embryo transparency, beating frequency and blood color changes are easily viewed from the embryonic hearts under a dissecting microscope. The current study established thein vitro culture method of embryonic hearts in guppy fish, which can be used as a model for the study of heart and cardiovascularf system in vertebrates.     

广西䗛目3新种记述

记述采自广西的Ｙｏｕ目昆虫３新种,即Ｙｏｕ科的兴安短肛Ｙｏｕ（Ｂａｃｕｌｕｍｘｉｎｇａｎｅｎｓｅｓｐ．ｎｏｖ．）异Ｙｏｕ科的广西原异Ｙｏｕ（Ｐｒｏｓｃｅｌｅｓｇｕａｎｇｘｉｅｎｓｉｓｓｐ．ｎｏｖ）和蓝胸蔷Ｙｏｕ（Ａｓｃｌｅｓｃａｅｃｉｕｓｓｐ．ｎｏｖ．）对其形态进行了描述,与近缘种作比较,并附特征图。     

广西蚱科二新种记述(直翅目:蚱总科)

记述蚱科（Ｔｅｔｒｉｇｉｄａｅ）２个新种,即白背突眼蚱（Ｅｒｇａｔｅｔｔｉｘ ｌｅｕｃｏｎｏｔｕｓ ｓｐ．ｎｏｖ．）,桂北蚱（Ｔｅｔｒｉｘ ｇｕｉｂｅｉｅｎｓｉｓ ｓｐ．ｎｏｖ．）。     

刚果盆地的棘管轮属(轮虫门;单巢亚纲;棘管轮科)

研究了2010年4月到5月和2012年6月二次采集自刚果盆地的水样,共发现棘管轮属Mytilina Bory de St.Vincent 1826的8个种,其中2个种 M.crassipes (Lucks,1912) 和 M.trigona (Gosse,1851)是非洲新纪录种; M.macrocera (Jennings,1894)和 M.bisulcata (Lucks,1912)是刚果盆地多个样点的常见种;M.ventralis (Ehrenberg,1830)和M.trigona,在刚果盆地个别样点比较多见;M.michelangllii Reid & Turner,1988, M.crassipes和M. brevispina (Ehrenberg,1830)在此次刚果盆地的调查中非常罕见;描述了一种棘管轮,其形态奇特,可能是新种.     

New fossil elaterids （Insect： Coleoptera： Polyphaga： Elateridae） from the Middle Jurassic of Inner Mongolia, China

A new genus with a new species of fossil elaterid, Paraprotagrypnus superbus gen. et sp. nov., from the Middle Jurassic Jiulongshan Formation in Daohugou Village (N41°18.979′, E119°14.318′), Shantou Township, Ningcheng County, Inner Mongolia, China is described and illustrated. The genus Paraprotagrypnus belongs to the family of Elateridae, subfamily of Protagrypninae and tribe of Protagrypnini. Some primitive characters of the new genus and new species shed light on the ages between the Jiulongshan Formation in Inner Mongolia and the Yixian Formation in the western Liaoning Province of China. The habitat of the new species is briefly discussed.     

广西异虫科一新种(虫目:异虫科)

记述华枝Ｘｉｕ属一新种－－臀沟华枝，对新种描述，并与近似种比较区别，附主要特证图，新种模式标本存于中国科学院动物研究所。     

广西金线鲃属鱼类一新种(鲤形目:鲤科:鲤亚科)

记述鲤科（Ｃｙｐｒｉｎｉｄａｅ）金线属（Ｓｉｎｏｃｙｃｌｏｃｈｅｉｌｕｓ）一新种，即广西金线（Ｓｉｎｏｃｙｃｌｏｃｈｅｉｌｕｓｇｕａｎｇｘｉｅｎｓｉｓｓｐ．ｎｏｖ．）。模式标本和副模标本均保存于广西壮族自治区自然博物馆。     

广西为害林木的阿异虫属1新种(虫目:异虫科)

记述阿异虫属１新种——黄色阿异虫Ａｒｕａｎｏｉｄｅａｆｌａｖｅｓｃｅｎｓｓｐ．ｎｏｖ．，对新种描述，与近缘种作了比较，并附主要特征图。模式标本保存于北京林业大学昆虫标本室。     

中国白肩天蛾属记述与一新记录种(鳞翅目:天蛾科)

白肩天蛾属(Rhagastis RothschildJordan,1903)在中国分布有9种.于2017年上半年和2018年上半年分别对贵州荔波县茂兰自然保护区和海南乐东县尖峰岭地区进行考察并采集到一些天蛾标本.在对长喙天蛾族(Macroglossini Harris,1839)的标本进行整理之后发现,其中一些标本为宽缘白肩天蛾(Rhagastis acuta Walker,1856),这是该种首次在中国境内被记录.对该新记录种雄性成虫的形态进行了描述且附图,并对中国白肩天蛾属目前已知的种类进行了记述.     

上海蝶类一新记录种（鳞翅目：弄蝶科）

记述了上海蝶类一新记录种：无趾弄蝶（Hasora anura de Nicéville，1889），简要描述了其形态特征，并提供成虫标本照和雌外生殖器解剖图，给出了上海地区趾弄蝶属分种检索表，同时列出相关生物学和分布信息.     

Morphological evolution from aquatic to terrestrial in the genus Oreolalax （Amphibia, Anura, Megophryidae）

A phylogeny of 17 species in the genus Oreolalax is reconstructed based on 21 morphological characters from adult specimens, skeleton specimens, tadpoles and eggs. Four species groups are recognized, of which the O. rugosus species group is the most primitive, the O. weigoldi species group is the second, the O. omeimontis species group is the third and the O. pingii species group is the most recently diversified. Based on the evolutional tendency of the morphological characters on the phylogenetic tree, it is proposed that the evolution of tympanum, tympanic annulus, columella, spoon-like cartilage and the web between toes reflect the habit changes from aquatic to terrestrial. Thus, Oreolalax is regarded as one important representative genus to study further the evolution of morphological characters from aquatic to terrestrial.     

广西悠背蚱属二新种记述(直翅目:蚱科)

记述蚱科（Ｔｅｔｒｉｇｉｄａｅ）悠背蚱属（Ｅｕｐａｒａｔｅｔｔｉｘ Ｈａｎｃｏｃｋ）的２个新种,即白条悠背蚱（Ｅｕｐａｒａｔｅｔｔｉｘ ｌｅｕｃｏｎｏｔｕｓ ｓｐ．ｎｏｖ．）,条斑悠背蚱（Ｅｕｐａｒａｔｅｔｔｉｘ ｓｔｒｉｍａｃｕｌａｔｕｓ ｓｐ．ｎｏｖ．）。     

广西铺道蚁属昆虫研究(膜翅目:蚁科)

报道采自广西的铺道蚁属Ｔｅｔｒａｍｏｒｉｕｍ昆虫１０种,其中５种为广西区新记录种,即：茸毛铺道蚁Ｔ．ｌａｎｕｇｉｎｏｓｕｍＭａｙｒ、陕西铺道蚁Ｔ．ｓｈｅｎｓｉｅｎｓｅＢｏｌｔｏｎ、史氏铺道蚁Ｔ．ｓｍｉｔｈｉＭａｙｒ、相似铺道蚁Ｔ．ｓｉｍｉｌｉｍｕｍ（Ｓｍｉｔｈ）和克氏铺道蚁Ｔ．ｋｒａｅｐｅｌｉｎｉＦｏｒｅｌ。标本保存于广西师范大学生物系标本室。提供广西该属已知１０种的工蚁分种检索表。     

龟甲轮属中国新记录种(轮虫门:真轮纲:游泳目:臂尾轮科)

记述了采自上海的中国新记录种凹腹龟甲轮虫(Keratella procurva Thorpe 1891),该种的特征为:腹部显著凹陷,前端有6刺,其中中间2刺最长,后端有2个不对称的棘刺.并根据光学显微镜(LM)和扫描电子显微镜(SEM)照片描述了该种的形态特征.     

广西猫儿山鹬虻属二新种(双翅目:鹬虻科)

记述采自广西猫儿山鹬虻属（Ｒｈａｇｉｏ）２新种，即无痣鹬虻（Ｒ．ａｓｔｉｃｔａＹａｎｇｅｔＹａｎｇ）和拟无痣鹬虻（Ｒ．ｐｓｅｕｄａｓｔｉｃｔａＹａｎｇｅｔＹａｎｇ），并综述属的特征。模式标本存北京农业大学昆虫标本室。     

凹尾拟鲿(Pseudobagrus emarginatus)——长江上游中国鲇类一有效种(硬骨鱼纲:鲿科)

对中国鲿科鱼类系统分类学研究中发现,凹尾拟鲿为一不同于细体拟鲿(P. pratti)的有效种,仅分布于长江上游。凹尾拟鲿胸刺前缘光滑无锯齿,颌须较短,后伸不超过胸鳍起点,本属中同时具有这两个特征的还包括18个有效种。在这18个物种中,乌苏里拟鲿(P. ussuriensis)、长脂拟鲿(P. adiposalis)、短尾拟鲿(P. brevicaudatus)和越南拟鲿(P. kyphus)与凹尾拟鲿一样,具有中等分叉的尾鳍。凹尾拟鲿与乌苏里拟鲿和长脂拟鲿的区别在于游离脊椎骨数目和背刺长短等性状上,与短尾拟鲿和越南拟鲿在背刺后缘程度、枕骨棘与项背骨间的间距上存在差异。凹尾拟鲿与细体拟鲿在形态上最为相似,但在体高、背鳍前长、脂鳍高及尾柄高等性状上存在差别。同时,在颅骨、犁骨、项背骨及腰带等骨骼特征上也存在较大差异。     

纤细叶蝉属1新种2新纪录种(半翅目:叶蝉科:圆痕叶蝉亚科)

记述中国圆痕叶蝉亚科纤细叶蝉属1新种：中性纤细叶蝉（Igerna mesialis sp.nov.）;2新纪录种：西隆纤细叶蝉（Igerna shillongensis Meshram rec.nov.）、威尔逊纤细叶蝉（Igerna wilsoni Viraktamath rec.nov.）.新种与美丽纤细叶蝉（Igerna channa Viraktamath,Dai&Zhang）相似,但前者阳茎干两边缘平行,至端部1/4处变窄;阳茎干上的短突起指向基腹侧;阳茎干上的长突起在基部侧缘,指向背侧;性孔位于阳茎干近中部.新种模式标本及新纪录种的检视标本保存于贵州大学昆虫研究所（GUGC）.     

正规权Bloch空间到QT,S空间的积分型算子

算子理论是解析函数空间理论研究的重要内容,为了寻找通过探讨联立算子与函数空间的方法研究算子以及函数空间的有效途径,假设为单位圆盘Δ上的一个解析自映射,正规权Bloch空间μ-B是单位圆盘Δ上的一个Banach空间,定义C_Ф∶C_Ф(f)=f■Ф为μ-B上的复合算子,对所有的f∈μ-B,并由积分算子以及复合算子推广得到积分型算子J_hC_Ф和C_ФJ_h,主要讨论了正规权Bloch空间到Q_(T,S)空间的积分型算子J_hC_Ф的有界性和紧性,以及正规权Bloch空间到Q_(T,S)空间的积分型算子C_ФJ_h的有界性,并给出了相关的充要条件。     

A comparative study of n -alkane biomarker and pollen records: an example from southern China

We report the results of a comparative study of n-alkane biomarkers and pollens in lacustrine and peat deposits at Dingnan, Jiangxi Province in southern China, and discuss the likely causes for the discrepancy in the interpretations of the n-alkane biomarker and pollen records in terms of climate and vegetation change. The results show that past changes in climate and vegetation revealed by the n-alkane record are not always consistent with the pollen assemblage record in the whole section. Biomarkers do not permit direct identification of the plant family and/or genus and mainly record compositions of local plant remains, while pollens mainly reflect the regional vegetation change. Biomarkers and pollen records complement each other, providing a better picture of local and regional environments. Furthermore, biomarkers are more sensitive than pollen to climatic and vegetational change. Several climatic events are clearly identified by the n-alkane biomarker proxies, such as C₃₁/(C₂₇+C₂₉+C ₃₁) ratio and can be correlated to the North Atlantic Heinrich event, B/A, YD and two dry-cool events during the early Holocene such as the periods of 9850 to 9585 cal a B.P. and 8590 to 7920 cal a B.P. These events are consistent with those found in the surrounding regions, suggesting that the regional climate was coupled with global-scale abrupt climatic events. Our results suggest that biomarker and pollen data can record the more detailed climate and vegetation information, thus improving the resolution and precision of vegetation and climate reconstruction. Supported by National Natural Science Foundation of China (Grant No. 40602004) and National Basic Research Program of China (Grant No. 2004CB720200)