‘Chloride-cell’ — like mitochondria-rich cells of salamander larva gill epithelium

Summary Two types of mitochondria-rich cells (MRC) are described ultrastructurally in the gill epithelium of salamander larva. They resemble MRC found in larval ventral epidermis. Histochemical localization of carbonic anhydrase indicated numerous positive reacting cells, most of them flask-shaped. Morphological and functional similarities to fish chloride cells are discussed.     

两栖爬行动物性别决定的研究进展

两栖爬行动物性别决定的方式有基因型性别决定和环境型性别决定两种类型。本文综述了两种类型的最新研究进展，推测两种性别决定机制在分子水平上可能是一致的，对进一步研究存在的问题作了一定的分析。     

云南部分地区两栖类寄生吸虫初步调查

通过对云南部分地区的两栖类动物寄生吸虫进行调查,共采集到2目6科6属9种两栖动物,在解剖的228号标本中,仅在无尾目的 4种192只蛙体内查到吸虫13种,其中单殖目吸虫1科1属3种,复殖目吸虫5科6属10种.在滇蛙(Rana.Pleuraden Boulenger)直肠、小肠、膀胱内检获吸虫10种,其中重盘吸虫属2种(Diplodiscus spp.);在云南双团棘胸蛙(Rana yunnanensis)膀胱内检获拟发状吸虫属1种(Gorgoderidae spp.);在无指盘臭蛙(Rana.grahami Boulenger)、日本林蛙昭觉亚种(Rana.japonica chaochiaoensis Liu)中分别检获多盘属吸虫各1种(Polystoma spp.).     

The atyid shrimp (Crustacea: Decapoda: Atyidae) rostrum: phylogeny versus adaptation,taxonomy versus trophic ecology

Cave shrimps of the subgenus Troglocaris (Atyidae), exhibit high variability in rostral length and dentition. In shrimp populations that co-occur with the amphibian predator Proteus anguinus, longer rostra armed with more numerous teeth are recorded. These shrimps are also larger than those living in a presumably Proteus-free environment. Discrepancies between molecularly established phylogenetic relationships and distributions of rostral length, as well as body size, directed our search towards possible environmental influences. These discrepancies suggest that rostral shape is not a reliable taxonomic character in some generic and many specific diagnoses in Atyidae. We discuss some taxonomic consequences of sexual and ontogenetic rostral differences with regard to the molecular phylogenetic tree. In preliminary laboratory observations, no frontal attack by Proteus was successful on shrimps with long rostra. Proteus also needed more time to swallow shrimps with long rostra.     

邻水县的两栖爬行动物调查

两次对邻水县的两栖爬行类进行了调查，结果表明：邻水县有两栖动物15种（隶属2目7科8属），爬行动物21种（隶属2目8科15属）。动物地理分布型为：热带亚热带型6种，占16.7％；全北型1种，占2.8％；南中国型19种，占52.8％；季风型8种，占22.2％；喜马拉雅-横断山型2种，占5.56％。区系组成：属东洋界有：华中区物种17种，占47.2％，华中华南区物种6种，占16.7％，东洋界广布种4种，占11.1％，属东洋、古北两界广布种的有9种，占总物种数的25％。     

太白山自然保护区两栖爬行动物多样性与保护

2005年4月-2006年7月,对太白山自然保护区两栖爬行动物进行了全面调查.结果表明,太白山自然保护区内共有两栖爬行动物36种,隶属于5目11科26属.其中,两栖动物10种,区系组成以广布种和东洋界成分为主;爬行动物26种,以东洋界华中区和华中与华南区种类为主要成分.受气候和植被的影响,太白山自然保护区内两栖爬行动物亦呈现出垂直分布的特征,基本上分布于4个带,并且古北界与东洋界种类交汇过渡分布.分析了两栖爬行动物资源现状,提出了今后保护管理的具体意见.     

两栖动物皮肤抗菌肽的研究进展

两栖动物的皮肤抗菌肽是抵御外界微生物侵袭的有效屏障之一.此文综述了两栖动物皮肤抗菌肽的最新研究进展,重点介绍了天然抗菌肽的分离、纯化、基因克隆与表达的过程,并展望了其在农业和临床上的应用前景.