Asian Herpetological Research Instructions for Authors

Asian Herpetological Research （AHR）, an international journal, is published quarterly by the Chengdu Institute of Biology, Chinese Academy of Sciences （CIB）, and Science Press in cooperation with the Asiatic Herpetological Research Society （AHRS）. The scope of the journal includes all contemporary herpetological research areas including taxonomy, morphology, phylogeny, systematics, evolution, zoogeography, physiology, ecology, toxicology and conservation biologv of amnhibians and reptiles.     

禾本科主要农作物叶绿体基因组研究进展

叶绿体是植物细胞所特有的细胞器,是光合作用的主要场所.叶绿体拥有独立的核外基因组,编码与自身功能相关的部分基因,具有半自主性.叶绿体基因组(cpDNA)中含有大量功能基因,在物种鉴定及系统进化研究中的应用价值已经受到研究者们的广泛关注和逐步认可.禾本科是叶绿体基因组研究比较集中的一个科,就禾本科主要作物的叶绿体基因组特...     

四药门花属及其近缘植物ITS区序列分析和系统学意义

测定和分析了四药门花等１３种金缕梅科（Ｈａｍａｍｅｌｉｄａｃｅａｅ）植物的核糖体ＤＮＡ转录间隔区（ＩＴＳ区）及５８Ｓ编码区的序列。应用最大简约法构建的分子系统树表明：被分析的金缕梅亚科（Ｈａｍａｍｅｌｉｄｏｉｄｅａｅ）植物形成一个单系类群,亚科内及其中的金缕梅族（Ｈａｍａｍｅｌｉｄｅａｅ）内部呈复系演化（ｐｏｌｙｐｈｙｌｅｔｉｃ）的特征;支持秀柱花族（Ｅｕｓｔｉｇｍａｔｅａｅ）（含秀柱花属Ｅｕｓｔｉｇｍａ、牛鼻栓属Ｆｏｒｔｕｎｅａｒｉａ和山白树属Ｓｉｎｏｗｉｌｓｏｎｉａ）成立以及将蚊母树族（Ｄｉｓｔｙｌｉｅａｅ）与弗特吉族（Ｆｏｔｈｅｒｇｉｌｅａｅ）合并的观点,此结果与Ｅｎｄｒｅｓ（１９８９）系统接近;金缕梅族中金缕梅属（Ｈａｍａｍｅｌｉｓ）与弗特吉族中的弗特吉属（Ｆｏｒｔｈｅｒｇｉｌａ）、银缕梅属（Ｓｈａｎｉｏｄｅｎｄｒｏｎ）和水丝梨属（Ｓｙｃｏｐｓｉｓ）系统发育关系密切;四药门花属（Ｔｅｔｒａｔｈｙｒｉｕｍ）与木属（Ｌｏｒｏｐｅｔａｌｕｍ）属于同一个单系类群,它们与Ｈａｍａｍｅｌｉｓ的亲缘关系较远     

Systematics and Species Validity of the Dabieshan Pit Viper Protobothrops dabieshanensis Huang et al. 2012: Evidence from a Mitochondrial Gene Sequence Analysis

Aimed to evaluate the phylogenetic position of the recently described Protobothrops dabieshanensis Huang et al. （2012）, phylogenic relationships of 12 species within Protobothrops based on four mtDNA gene fragments （12S RNA, 16S RNA, ND4 and Cyt b） were reconstructed in our study. The result indicates a clade composed ofP dabiesha- nensis, P. jerdonii and P xiangchengsis with strong support. The genetic distance among P dabieshanensis, P jerdonii and P xiangchengsis was much lower than other congeners. Based on the data from the phylogenetic analysis and pre- viously described morphological differences, we conclude that P dabieshanensis is a valid species with close affinities to P jerdonii and P xiangchengsis.     

基于Rag1基因序列变异的鲤形目鱼类系统发育重建:采样策略对生命之树的影响

The phylogenetic relationships of species are fundamental to any biological investigation, including all evolutionary studies. Accurate inferences of sister group relationships provide the researcher with an historical framework within which the attributes or geographic origin of species (or supraspecific groups) evolved. Taken out of this phylogenetic context, interpretations of evolutionary processes or origins, geographic distributions, or speciation rates and mechanisms, are subject to nothing less than a biological experiment without controls. Cypriniformes is the most diverse clade of freshwater fishes with estimates of diversity of nearly 3,500 species. These fishes display an amazing array of morphological, ecological, behavioral, and geographic diversity and offer a tremendous opportunity to enhance our understanding of the biotic and abiotic factors associated with diversification and adaptation to environments. Given the nearly global distribution of these fishes, they serve as an important model group for a plethora of biological investigations, including indicator species for future climatic changes. The occurrence of the zebrafish, Danio rerio, in this order makes this clade a critical component in understanding and predicting the relationship between mutagenesis and phenotypic expressions in vertebrates, including humans. With the tremendous diversity in Cypriniformes, our understanding of their phylogenetic relationships has not proceeded at an acceptable rate, despite a plethora of morphological and more recent molecular studies. Most studies are pre-Hennigian in origin or include relatively small numbers of taxa. Given that analyses of small numbers of taxa for molecular characters can be compromised by peculiarities of long-branch attraction and nodal-density effect, it is critical that significant progress in our understanding of the relationships of these important fishes occurs with increasing sampling of species to mitigate these potential problems. The recent Cypriniformes Tree of Life initiative is an effort to achieve this goal with morphological and molecular (mitochondrial and nuclear) data. In this early synthesis of our understanding of the phylogenetic relationships of these fishes, all types of data have contributed historically to improving our understanding, but not all analyses are complementary in taxon sampling, thus precluding direct understanding of the impact of taxon sampling on achieving accurate phylogenetic inferences. However, recent molecular studies do provide some insight and in some instances taxon sampling can be implicated as a variable that can influence sister group relationships. Other instances may also exist but without inclusion of more taxa for both mitochondrial and nuclear genes, one cannot distinguish between inferences being dictated by taxon sampling or the origins of the molecular data.     

Complete Genomic Sequence of Transmissible Gastroenteritis Virus TS and 3＇ End Sequence Characterization Following Cell Culture

The complete genome sequence of transmissible Gastroenteritis virus (TGEV) strain TS, previously isolated from Gansu province, was cloned and compared with published sequence data from other TGEV strains.Phylogenetic tree analysis based on the amino acid and nucleotide sequences of the S gene showed that the TGEV strains were divided into 3 clusters. TGEV TS showed a close evolutionary relationship to the American Miller cluster but had a 5' non-translated region (NTR) sequence closely related to the American Purdue cluster.Continued culture in different cell types indicated that TGEV TS virulence could be attenuated alter fifty passages in Porcine kidney (PK-15) cells, and that the Porcine kidney cell line IB-RS-2 (IBRS) was not suitable for culture of the TGEV strain TS.     

黑胸散白蚁肠道共生锐滴虫目鞭毛虫的多样性分析与原位杂交鉴定

低等木食性白蚁肠道内的鞭毛虫在纤维素降解过程中扮演着重要的角色。黑胸散白蚁Reticulitermes chinensis Snyder是一种广泛分布于我国的低等木食性白蚁,然而目前对于其肠道内的共生鞭毛虫却鲜见报道。采用锐滴虫目18S rDNA特异引物扩增鞭毛虫18S rRNA 基因并构建文库,对得到的基因进行系统发育多样性分析。针对得到的序列设计特异性的荧光探针,用荧光原位杂交技术对锐滴虫目鞭毛虫进行了鉴定。从黑胸散白蚁肠道得到11个锐滴虫目鞭毛虫18S rDNA序列,它们之间的相似性为86.9%-99.3%。系统发育分析表明,锐滴虫目鞭毛虫主要属于Dinenympha和Pyrsonympha两个属。应用荧光原位杂交技术鉴定出了Dinenympha parva、Dinenympha exilis和Pyrsonympha sp.三种锐滴虫。研究表明,在黑胸散白蚁肠道共生的锐滴虫为Dinenympha和Pyrsonympha属的鞭毛虫。