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1983年  第4卷  第3期

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研究论文
Altogether there are 15 kindo of indigenous fishes in it.The fish fauna is radically different from that of other lakes but shares characteristics with fish fauna of the China Plain,showing that the fish fauna of Chenhai had derived from a common origin with Yangtze River.Having isolated from Chinsha River,Chenhai provided unoccupied niches for fishes.It is an important factor leading to species differentiation.Cyprinus carpio L.sets an excellent example in this respect showing a series of adaptative morhphological modifications.These modifications occurred within recent 300 years.Such a span of time is much shorter than the formation of Gymnocypris przewalskii ganzihoensis Zhu et Wu from its ancestral stock but is longer than the formation of the domastic golden crucian carp from its wild ancestor Carassius auratus (L.).It is clear,therefore,that the process of differentiation varies depending on different kinds of animals as well as ecological conditions.
Since the publication of authors "Notes on chinese Pandemis Hübner with descriptions of new species",two more new species have been found in Chinas Sichuan and Shanxi Provinces.Thus,the total number of chinese species of this genus amounts up to 18.Description of these two new species are reported in this paper.All specimens are kept in the Institute of Zoology,Academia Sinica.
A study was carried out to evaluate the development of Schistosoma japonicum (Chinese mainland strain) in inbred and outbred mice.Male mice of four inbred strains (C57BL,ICR,615,Jin-Bai Ⅰ) and two outbred strains (Km-P,Km-S) were used.Cercariae were collected from many F1 laboratorybred and -infected Oncomelania hupensis hupensis.Both snails and schistosomes were originated from Anwei Province.Each mouse was exposed to 40 cercariae of the same pool,10 mice for each strain were used in each of the 10 experiments.Daily stool examination for schistosome eggs were started 33 days after infection,and after 6 weeks all mice were autopsied and their worm burden was recorded.Results obtained from the present study indicated that the six strains of mouse can be grouped into two categories based upon the worm burden.The first category included the C57BL,ICR and 615 inbred mice in which the worm burden was higher than that of the second category to which the inbred Jin-Bai Ⅰ as well as outbred Km-P and Km-S strains belong.No consistent differences were observed in the body size or in the size of gonads of adult worms at the age of 42 days in the six strains of mice.But more hermaphroditic malformation of adult worms was found in outbred strain mice in which 11 specimens were observed than in inbred C57BL and ICR strains,in which only 2 and 1 specimens were obtained respectively.
Trimeresurus Mucrosquamatus venom (TMV) induced the concentration-dependent aggregation of platelets of different species.The threshold concentrations of TMV inducing the platelet aggregation of human,rabbit,dog and Guinea pig were 2.0,12.5,2.0 and 0.6 μg/Ml respectively.EDTA interfered with the platelet aggregation by TMV,but heparin did not prevent the action of TMV.The platelet aggregation induced by TMV was accompanied by the release of serotonin (5-HT) from the challenged platelets.The concentration of TMV which induced the maxium release of 5-HT (72%) from rabbit platelets was 100 μg/Ml.The TMV also induced the formation of Thromboxane A2 (TXA2) of platelets.The inhibition of cyclo-oxygenase with apirin,which reduced and abolished the formation of TXA2,but did not suppress platelt aggregation induced by TMV.Thus,thromboxane-independent mechanisms should account for platelet activation with TMV.Our preliminary results shown that TMV is a good tool for studying the activation of platelets.
This paper reported the preparation of three hydrophobic chromatographic absorbents and the comparison of some hydrophobic chromatographic behaviour of the cholinesterase from the Venom of Naja Naja atra.The length of the "Spacer arm" affected the adsorption of the enzyme,the more extended the carbon chain of the "Spacer arm",the stronger the adsorption of the enzyme.The cholinesterase from hydrophobic chromatography gave six bands in disc gel electrophoresis too.That implied a similar of the hydrophobic region of the isoenzymes.
Acid α-naphthyl acetate esterase (ANAE) positive lymphocytes in peripheral blood smears and lymphocyte suspension cytocentrifuge preparations of Macaca mulatta were 82.9±5.9% and 84.6±4.2%,respectively.Of M.assamensis,M.nemestrina and W.speciosa also were about 85%.By double marking with ANAE and EAET (AET-treated sheep red blood cells) or ZYC (zymosan-yeastcomplement complex) and by triple marking with them simultaneously,ANAE positive cells in T,B and null cells of M.mulatta were 95.5±1.8%,52.8±3.0% and 78.7±9.2%,respectively.The results indi that ANAE staining was not a specific method for marking of T cell in these monkeys.
The plasma cortisol concentrations in 60 normal dogs were determined by radioimmunoassay.According to the plasma cortisol values the dogs might be divided into 3 types,I.e.8:00 AM-low concentration with 5:00 PM-high concentration is called type A (30 dogs),8:00 AM-high concentration with 5:00 PM-low concentratiin is called type B (20 dogs),while 8:00 through 5:00 PM proximal concentration is called type C (10 dogs).We found that the circadian rhythms of the bio-o clock of plasma cortisol secretion in type B dogs were appeared in "U-form".There were two kinds of causation in these 3 type dogs:1)The plasma cortisol secretion of dogs were closely depended on the species of dogs.2)The plasma cortisol secretion of dogs were related with their envirements and their variant "lifeatyle".
The blood picture of 38 normal tree shrews (Tupaia belangeri) was reported.The results were as follows,the total erythrocyte count was 8.09±1.8 million/cu mm.,leukocyte count-2.93±1.12 thousand/cu mm.,thrombocyte count-164.4±98.2 thousand/cu mm.,hemoglobin value-15.63±2.30 g/dl.The results are discussed in detail and compared with relevant papers.