向海地区斑嘴鸭体内1新种绦虫的分离与鉴定

在中国吉林向海地区的斑嘴鸭(Anas poecilorhyncha)体内分离到3条绦虫,通过形态学观察和分子进化分析(28S r DNA、nad1和18S r DNA)对该绦虫进行种属鉴定。结果表明:该虫为膜壳科(Hymenolepididae)双睾属(Diorchis)。但该虫不同于其他双睾属现有的种,其区别类的特征为吻突上的钩长0.019～0.029 mm,阴茎囊未达到节片中间,也未穿过渗透调节管,确定该绦虫为膜壳科双睾属1新种,命名为Diorchis poecilorhynchamorbus,Zhijun Hou,2017。

Monitoring of Avian Influenza Virus and Newcastle Disease Virus in Suichuan Region of Jiangxi Province

[ Objective ] The research aimed to investigate the epidemiological characteristics of Avian influenza virus （AIV） and Newcastle disease virus （NDV） of wild Ardeid birds in Suichuan region of Jiangxi Province. [ Method] A total of 110 nasopharyngeal swabs and 110 cloacal swabs of Ardeid birds were collected from Suichuan region of Jiangxi Province in October of 2014. The swabs were conducted the virus isolation using SPF chicken embryos, suspected positive samples were screened by hemagglutination （HA） test and identified by Reverse Transcription-Polymerase Chain Reaction （RT-PCR）. [Results] HA titre of all 110 test samples was 0 except four samples. Detection on AIV and NDV of the test samples by RT-PCR showed that all the samples were negative, which indicated that the infection risk of avian influenza （AI） and newcastle disease （ND） of Ardeid birds in Suichuan region in Jiangxi Province in the summer of 2014 was low. [ Conclusion] The research provided the basic data for studying the infection situations of AI and ND of wild waterfowl in Jiangxi Province.

例谈指向物理核心素养的课堂实验教学主张

针对培育物理核心素养对实验教学的新要求和实验教学中存在的普遍问题,提出了实现课堂实验育人功能的六个教学主张,即实验设计的针对性、实验过程的主体性、实验教学的思维性、实验背景的情境性、实验方案的创新性以及实验方式的趣味性,并结合实例进行阐述。