九孔鲍肠道及水体中产几丁质酶菌群的测定

通过特定的TCBS(Thiosufate-Citrate-Bile Salts-Sucrose)和筛选培养基，对九孔鲍肠道及其养殖水体中菌群的产几丁质酶能力进行了研究．结果表明，在鲍鱼肠道及其养殖水体中均存在有能分泌几丁质酶的微生物．在鲍鱼肠道中，共分离到12株菌株，占总细菌的34．3％，它们分别属于Vibrio fluvialis和Vibrio minicus；在鲍鱼养殖水体中则分离到4株菌株，占总细菌的11．8％，属于Vibrio fluvialis．比较鲍鱼肠道和养殖水体中产几丁质酶菌株的比例及其能力的大小，可以发现前者的比例高于后者，由此表明了鲍鱼肠道对菌株的选择性．

Mensuration of Chitinase-Producing Abilities of Strains Isolated From Digestion Guts and Farming Water of Haliotis Diversicolor Supertexta

The chitinase-producing abilities of strains isolated from both farming water and digestion guts of Haliotis diversicolor supertexta were studied by a special TCBS (Thiosufate-Citrate-Bile Salts-Sucrose) and by screening the culture media. The results indicate that there are chitinase-producing strains in farming water and digestion guts of the abalone. 12 bacteria were isolated from abalone digestion guts, which account for 34.3% of the total bacterial populations in the guts. Species identification shows that these chitinase-producing strains belong to Vibrio fluvialis and Vibrio minicus. From the abalone farming water, 4 chitinase-producing strains were isolated, which account for 11.8% of the total bacterial populations. These 4 strains belong to Vibrio fluvialis. Compared with the farming water, it is clear that there are more chitinase-producing strains in abalone digestion guts, and abalone digestion guts display selectivity toward the chitinase-producing strains.