New records of Bathynellacea (Syncarida,Bathynellidae) in North America: three new species of the genus Pacificabathynella from Montana,USA

Three new species of the genus Pacificabathynella Schminke and Noodt, 1988 Schminke, H K and Noodt, W. 1988. Groundwater Crustacea of the order Bathynellacea (Malacostraca) from North America. J Crustacean Biol., 8(2): 290–299.  [Google Scholar] are described from groundwater aquifers in glaciated North America (Montana, USA). This is the first time that this genus, known previously only from the state of California, has been documented in Montana. Pacificabathynella and Paradoxibathynella Serban, 2000 Serban, E. 2000. Uenobathynella n.g., Parauenobathynella n.g., Morimotobathynella n.g., Nihobathynella n.g. et Paradoxibathynella n.g., Bathynellinae du Japón (Bathynellidae, Bathynellacea, Podophallocarida). Travaux Inst Spéol “Émile Racovitza”, 36: 3–61.  [Google Scholar] are the only genera that show sexual dimorphism in thoracopod VI. Pacificabathynella kalispellensis sp. nov. has several unique features: the setal formula of the antenna (0/2+exop/3/12/6/8/5); the setal formula of the maxilla (7/4/7/6); the presence of an epipod on thoracopod II; tufts of setulae and abundant setae on the basipod and endopod of thoracopods I to V; the epipod of thoracopod VIII female three times longer than the basipod; three smooth setae on the exopod of the female thoracopod VIII; eight spines on the endopod of the uropod and the endopod longer than the sympod, whereas the opposite is typical. Pacificabathynella stanfordi sp. nov. has several unique features: only five setae on the exopod of thoracopods II to VII, while six setae are common in the genus; only six setae on the second segment of the first pleopod; five spines on the endopod and seven setae on the exopod of the uropod. Pacificabathynella ruthae sp. nov. is the largest species and has several unique features: antennule equal in size to the antenna, whereas in the rest of the species of the genus the antenna is larger; the projection of the inner lobe of the male thoracopod VIII is bidentate and there are six spines on the endopod and nine setae on the exopod of the uropod. The three new species have slight differences in the pars molaris of the mandible and in thoracopod VIII of males, and there are other minor differences between the females and the species Pacificabathynella sequoiae. The new taxa, together with the new genus Montanabathynella described separately, represent a 30% increase in North American taxa. Considering the glaciated landscape and the fragmented nature of alluvial aquifer habitat, we believe that there is a profound lack of critical knowledge of the biogeography and biodiversity of syncarids in North America.     

云南省德钦县兽类区系调查

于2010年6月-7月和2011年3-8月对德钦县陆生脊椎动物进行了数次野外调查,调查地点分布于拖顶乡、霞若乡、奔子栏镇、燕门乡、云岭乡、升平镇、佛山乡和羊拉乡8个乡镇。调查共记录89种兽类,隶属8目、23科、59属。其中东洋种占全部兽类种数的66.29%,古北种占13.48%,广布种占20.22%.德钦县境内分布的兽类中有各级重点保护野生兽类22种,其中国家I级保护兽类6种,国家Ⅱ级保护兽类14种,云南省省级保护兽类有2种。列入CITTES附录的物种25种。     

冶勒水电站水库对陆生脊椎动物的影响

本文对冶勒乡进行了陆生脊椎动物调查,有两栖类12种,爬行类6种,鸟类149种,兽类52种.按其分类及资源类型、区系组成、分布特点,结合自然条件、水库形态、库容、运行特点等,分析了水库修建期间及蓄水后对陆生脊椎动物的影响,预测其演变趋势,并提出相应的对策.     

东北高寒地区麦田生态系统中土壤动物区系的研究

本文对东北高寒地区麦田中土壤动物进行了统计.共有13类,隶属3门、5纲,其中蜱螨类、弹尾类和线虫类占土壤动物总数的99.17％,为优势类群.土壤动物具有明显的季节变化,这与诸多环境因素的综合作用有关,即环境因素的变化可以使土壤动物的类群结构发生改变.麦田中0～15cm土壤动物的垂直分布无显著差异.     

兴隆山自然保护区蜘蛛区系的研究

１９９２－１９９３年间进行兴隆山自然保护区蜘蛛区系的研究，共获标本１４４０号，初步鉴定为９１种，４５属１５科，其中古北界的种类为４６种，占总种数的４０．５４％，东洋界的种类为５种，占总种数的５．４９％，广布种为４０种，占总种数的４３．９５％。显然，古北界的种类占优势。     

前寒武纪的划分

本文采用尹赞勋提出的地球历史发展的两大阶段:天文时期与地质时期,并同意废弃隐生宙与显生宙。本文着重讨论了生物的发展,从无机到有机,到蛋白质,到细胞,到后生动物的阶段性。建议地质时期代的划分,根据生物发展阶段特征,前寒武纪划分为无生代、隐生代、始生代与原生代。另把古生代下限延至900Ma,包括震旦纪。小壳动物应归属震旦纪,而不是寒武纪。     

系统地理学的研究及其在鱼类上的应用

介绍了系统地理学的研究内容、理论、方法,重点介绍了AVISE的5种物种分布模式、中性溯祖理论、mtDNA多态性分析的优越性以及TEMPLETON的巢式支系法。还从地理隔离、种群扩散、基因交流、区系划分、分子钟估算等方面阐述了系统地理学在鱼类的应用研究现况和应用前景。最后提出了系统地理学在鱼类应用时要注意的事项:1)要选择合适的基因DNA片段进行分析;2)mtDNA标记最好要与核DNA标记及形态学、细胞学、生化学标记结合使用;3)要提高分子钟估算的精确度。     

Taxonomy, age and environment status of the Yuanmou hominoids

When, where and from which hominoid the human originated has been one of the key subjects in the study of human natural history. It is therefore very important to learn the chronological, geographical and taxonomic distribution of all hominoids. Yunnan Pr…     

甘肃西部蝶类区系研究

1994－1998年7－8月间广泛收集到甘肃西部地区蝶类标本1200多号：经鉴定为127种及亚种，隶属于8科，73属：其中有44种及亚种为甘肃省新记录；经区系分析属于古北界种74种，占总数的58．8％，广布种为53种，占总数的41．2％，古北界占优势。