望天湖底栖动物种群密度与季节变动的初步观察   总被引：9，自引：0，他引：9  

陈其羽  谢翠娴  梁彦龄  王士达 《海洋与湖沼》1982,13(1):78-86

国内有关淡水底栖动物生态研究的报道较少,尤以底栖动物种群密度的季节变动资料更是缺乏。作者于1965年曾对望天湖底栖动物进行过调查,取得了一些资料。望天湖位于长江中游(湖北省浠水县),为中型(万亩左右)浅水湖泊,其底栖动物资料有一定的代表性,特整理发表,供有关方面参考。  相似文献   

PSEUDOSMITTIA AIZAIENSIS, A NEW SPECIES OF ORTHOCLADIINAE (DIPTERA, CHIRONOMIDAE) FROM HUNAN PROVINCE OF CHINA     

王士达 《中国海洋湖沼学报》1990,(3)

Male and female adult midges of Pseudosmittia aizaiensis sp. n. are described and illustrated with figures of morphological characters. The inferior volsella of gonocoxite with large lobes, the long but equal width gonostylus. and the small projection in basal part of outer margin are the characters that may separate this species from others. One larva of this genus is purely aquatic in habitat and is associated with Cricotopus bicinctus, Cardiociadius capucinns and Polypedilum sp. in the same algae debris (Spirogyra sp.) of the Dunghe River. Further, the larva's very short SI and SII bifids. its 5 pairs of lateral teeth on mentum and its absence of premandible brush are the characters that may also separate this species from any known species of this genus.  相似文献