中国树鼩的寄生虫调查研究

树鼩是一种新开发的小型实验动物. 研究树鼩的寄生虫对保护树鼩群体, 保证准确的实验结果, 以及寻找人类疾病的动物模型等方面都有着重要的实用意义和理论意义. 关于缅甸、越南、婆罗洲、马来西亚、马来亚、印度、和印度尼西亚树鼩的体内外寄生虫研究, 国外学者已作过许多研究(Dunn, 1963, 1964; Van Peenen等, 1967;Durette-Desset等, 1975, 1981; File, 1974; Quentin等, 1975, 1977; Chabaud等, 1975;Ohbayashi等, 1983; Betteron等, 1977; Betterton, 1979, 1980; Myers, 1960; Orihel, 1966; Nandi, 1982; Manning等, 1972; Mallin等, 1972; Schmidt等, 1977; Houdemer, 1938; Heyneman 等, 1965; Jordan,1926; Durden 等, 1984)。

埃及阿斯旺高坝的水生态学影响和纳赛尔水库的渔业

<正> 阿斯旺高坝是根据埃及——苏丹河流规划修建的,主要目的是灌溉和发电,坝顶高程180米。1902年时在阿斯旺曾建过一坝,现仍存在,称为老阿斯旺坝。新坝在老坝的上游6.5公里处,1960年动工,1964年开始蓄水,1968年竣工。高坝的建成使尼罗河成为世界上唯一的河水能全部控制和充分利用的大河。形成的水库在埃及境内的部分称为纳赛

Redescription of Trypanosoma siniperca Chang 1964 from freshwater fish of China based on morphological and molecular data

During the parasite fauna investigation within 2005, the freshwater fish trypanosome Trypanosoma siniperca Chang 1964 was isolated from the blood of Mandarin carp (Siniperca chuatsi) from Niushan Lake, Hubei Province, central China. Blood trypomastigotes were observed only, and the density of infection was low. Light microscopy examinations of this material made it possible to study in detail the morphology of this parasite and redescribe it according to current standards. T. siniperca is characterized also on the molecular level using the sequences of SSU rRNA gene. Phylogenetic analyses based on these sequences allowed clearer phylogenetic relationships to be established with other fish trypanosomes sequenced to date.

Redescription of Trypanosoma ophiocephali Chen 1964 (Kinetoplastida : Trypanosomatina : Trypanosomatidae) and first record from the blood of dark sleeper (Odontobutis obscura Temminck and Schlegel) in China

During the parasite fauna investigation within 2004 and 2005, the freshwater fish trypanosomes were isolated from the blood of dark sleeper (Odontobutis obscura Temminck and Schlegel) and snakehead fish (Ophiocephalus argus Cantor) from Niushan Lake, Hubei Province, China. Blood trypomastigotes were used for light microscopy investigations. The detailed descriptions of three morphological groups of the genus Trypanosoma: Trypanosoma sp. I and Trypanosoma sp. II found in blood of O. obscura, and Trypanosoma sp. III found in blood of O. argus were provided. Morphological features and host species show Trypanosoma sp. III belong to Trypanosoma ophiocephali Chen 1964, an incompletely described species. Infection with trypanosomes of O. obscura was recorded for the first time. According to the size and appearance, the trypanosomes in O. obscura were also tentatively identified as T. ophiocephali Chen 1964.