作　　者： ; ; ; ; ;

机构地区： 广东海洋大学

出　　处： 《海洋科学》 2009年第10期31-35,共5页

摘　　要： 在室内水泥池分别进行了移池培育、不同种类附着器、光照强度、水流和冲洗对珠母贝附着幼虫变态和稚贝存活的研究，结果表明：附着密度为2．18个／cm^2±0．50个／cm^2时，移池培育，其变态幼虫密度为0．95个／cm^2±0．13个／cm^2，20d稚贝存活密度0．41个／cm^2±0．08个／cm^2，移池培育显著提高附着幼虫变态和稚贝存活；附着板、附着绳、网片、小石块变态幼虫密度分别为0．70个／cm^2±0．08个／cm^2、1．38个／cm^2±0．15个／cm^2、0．97个／cm^2±0．12个／cm^2、1．04个／cm^2±^0．28个／cm^2，稚贝存活密度分别为0．36个／cm^2±0．06个／cm^2、0．62个／cm^2±0．07个／cm^2、0．45个／cm^2±0．07个／cm^2、0．60个／cm^2±0．08个／cm^2，附着绳显著提高附着幼虫变态和稚贝存活；光照强度为300-600lx时变态幼虫密度为0．87个／cm^2±0．07个／cm^2，20d稚贝存活密度0．45个／cm^2±0．08个／cm^2，强光不利于幼虫的变态和稚贝存活；水流速为2．3cm／s时变态幼虫密度为1．08个／cm^2±0．07个／cm^2，20d稚贝存活密度0．87个／cm^2±0．07个／cm^2，冲洗的变态幼虫密度为1．64个／cm^2±0．19个／cm^2，20d稚贝存活密度1．00个／cm^2±0．12个／cm^2，水流或冲洗显著提高附着幼虫变态和稚贝存活。 The metamorphosis of settled larvae and survival of young shellfish were investigated after different operations, changing ponds, different kinds of settlement media, light intensive, water current and washing. The results showed that changing ponds increased the metamorphosis of settled larvae and survival of young shellfish with survival density 0.4l shells/cm^2± 0.08 shells/cm^2 of 20 d young shellfish when the larvae settlement density was 2.18 shells/cm^2 ±0.50 shells/cm^2. Metamorphic larvae density on settlement board, chord, net and small stone were 0. 70 shells/cm^2 ±0. 08 shells/cm^2, 1. 38 shells/cm^2 ±0.15 shells/cm^2, 0.97 shells/cm^2± 0. 12 shells/cm^2 and 1. 04 shells/cm^2 ± 0. 28 shells/cm^2, respectively. And the young shellfish survival densities were O. 36 shells/cm^2± 0.06 shells/cm^2 , 0. 62 shells/cm^2±0.07 shells/cm^2 , 0.45 shells/cm^2±0.07 shells/cm^2 and 0.60 shells/cm^2 ＋0.08 shells/cm^2. Settlement chord increased significantly the larval metamorphosis and young shellfish survival. The metamorphic larvae density was 0.87 shells/cm^2 ±0.07 shells/cm^2 and the young shellfish survival density was 0.45 shells/cm^2 ±0.08 shells/cm^2 when light intensity is 300 ix to 600 lx. High light intensity was harmful to larval metamorphosis and young shellfish survival. The larval metamorphic density was 1.08 shells/cm^2±0.07 shells/cm^2 and 20 d young shellfish survival density was 0.87 shells/cm^2 ±0.07 shells/cm^2. After washing, the larval metamorphic density was 1.64 shells/cm^2 ±0.19 shells/cm^2 and 20 d young shellfish survival density was 1.00 shells/cm^2 ±0.12 shells/cm^2. Water current and washing increased significantly the larval metamorphosis and young shellfish survival.

关 键 词： 珠母贝 附着幼虫 稚贝 变态 存活

领　　域： [农业科学] [农业科学]