Digestive enzyme activities in mudskipper Boleophthalmus pectinirostris and Chinese black sleeper Bostrichthys sinensis     

吴仁协  洪万树  张其永 《中国海洋湖沼学报》2010,28(4):756-761

The mudskipper Boleophthalmus pectinirostris and Chinese black sleeper Bostrichthys sinensis occupy the intertidal zone. However, both species have their own unique diet. The former is an herbivore and the latter is a carnivore. In order to reveal the relationship between digestive enzyme activities and diets in the two species, the activities of protease (P), non-specific bile salt-activated lipase (BAL) and α-amylase (A) were determined in the stomach and intestine of adult mudskipper B. pectinirostris and Chinese black sleeper B. sinensis. The results showed that the activities of protease, BAL and α-amylase in the intestine of B. pectinirostris were significantly (P<0.05) higher than those in the stomach. In B. sinensis, gastric protease activity was not different from the intestinal protease (P>0.05), while BAL and α-amylase activities of the intestine were significantly (P<0.05) higher than those of the stomach. The activity of gastric protease in B. sinensis was significantly (P<0.05) higher than that in B. pectinirostris, while the activities of intestinal protease were not different between the two fish species (P>0.05). BAL activities of the stomach and intestine in B. sinensis were significantly (P<0.05) higher than those in B. pectinirostris, while α-amylase activities of the stomach and intestine in B. pectinirostris were significantly (P<0.05) higher than those in B. sinensis. The ratios of P/BAL, A/P and A/BAL of the digestive tract in B. pectinirostris were 1.5, 107.3 and 158.6, respectively; and those in B. sinensis were 0.2, 1.6 and 0.2, respectively. It can be concluded that food digestion in the adult B. pectinirostris is mainly carried out in the intestine, whereas in the adult B. sinensis it is initiated in the stomach and finishes in the intestine. The activities of BAL and α-amylase in B. pectinirostris and B. sinensis are well correlated with their diets. However, a clear-cut correlation between protease activity and diets is not found in these two species.  相似文献   

确定震中参考地名的原则与方法   总被引：1，自引：0，他引：1  

和锐  冯义钧  肖承邺 《中国地震》2010,26(1)

确定震中参考地名是多年来很少涉及的一项基础性工作,对于地震目录标准化规范化非常重要。本文综述了震中参考地名研究的发展概况,归纳了存在的问题,提出了确定震中参考地名的原则和方法。  相似文献   

古登堡(Beno Gutenberg)     

肖承邺 《地震地磁观测与研究》1984,(4)

地球物理学家古登堡是美籍德国人,1889年6月4日出生在德国(现今西德)达姆施塔特城(Darmstadt)。1907年考入当地的工科大学,第二年转到格廷根(Gottingen)综合大学,在维歇特(E.Wiechet)教授指导下攻读地球物理学,1911年古登堡以优异成绩通过题为《论地震脉  相似文献   

О·Ю·ШМИДТ(施米特)     

肖承邺  刘新美  杨宝仁 《山西地震》1986,(1)

地球物理学家施米特(O·U·Schmidt)是苏联科学院院士,1819年出生在苏联乌克兰。施米特青年时代在基辅大学攻读数学,后来从事科学研究、教学和国家领导工作。1918年施米特加入苏联共产党后,曾任苏联粮食、财经,教育人民委员会成员,国家计划主席团成员。曾领导苏联国家出版事业,组织苏联大百科全书的出版工作。并参与组建和颁发列宁奖金的工作。二十年代末,为适应苏联国民经济发展的要求,他被任命为北极研究所所长,北海干线主任,组织领导北极探险,由于出色地完成任务而获得苏联英雄称号。三十年代中期,他组建了苏联科学院地理研究所地球物理部,于1938年扩建成理论地球物理研究所,他亲自担任所长,吸引了许多学者,使该研究所成为苏联地球物理学家们第一个理想的工作场所。  相似文献   

和达清夫     

K.Wadachi  肖承邺  杨宝仁  刘新美 《山西地震》1986,(3)

地震学家和达清夫是日本人,1902年出生在日本。和达清夫青年时代进入日本东京大学攻读物理,1925年毕业后在日本中央气象台担任日本地震台网观测资料的分析处理工作。日本中央气象台升格为日本气象厅后,1956年至1963年和达清夫担任该厅长官。1949年他当选为有声望的日本学士院成员,后任该院院长。 和达清夫对地震学的贡献,有科学研究方面的成就,也有科学组织工作方面的成绩。他早期在分析处理日本地震台网观测资料过程中,创造了测定发震时刻和测定震源位置的方法,至今仍被广泛使用,并被称为测定发震时刻的和达法和测定震源位置的和  相似文献