溶藻弧菌对地中海贻贝幼虫存活的影响。

Effect of Vibrio alginolyticus on larval survival of the blue mussel Mytilus galloprovincialis.

作者信息

Anguiano-Beltrán Casandra, Lizárraga-Partida Marcial Leonardo, Searcy-Bernal Ricardo

机构信息

Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, Apartado Postal 453, Ensenada BC 22800, Mexico.

出版信息

Dis Aquat Organ. 2004 May 5;59(2):119-23. doi: 10.3354/dao059119.

DOI:10.3354/dao059119

PMID:15212277

Abstract

The effect of increasing concentrations of Vibrio alginolyticus on survival of Mytilus galloprovincialis larvae was studied in a 48 h static bioassay in 1 l glass bottles. Five bacterial densities were tested ranging from 10(2) to 10(6) bacteria ml(-1). Larval survival and normality (veliger larvae with the typical D-shape) were evaluated after 48 h. An inverse relationship between bacterial concentration and larval survival and normality was observed. In spite of high larval survival (79%) under conditions of high bacterial density (10(5) bacteria ml(-1)), the percent of normal larvae was 11%. Besides an irregular shape, abnormal larvae also presented velum reduction. Results from this study suggest that concentrations of V. alginolyticus lower than 10(3) bacteria ml(-1) should be maintained during M. galloprovincialis larval culture.

摘要

在1升玻璃瓶中进行的48小时静态生物测定中，研究了溶藻弧菌浓度增加对地中海贻贝幼虫存活的影响。测试了五种细菌密度，范围从10²到10⁶个细菌/毫升。48小时后评估幼虫的存活率和正常率（具有典型D形的面盘幼虫）。观察到细菌浓度与幼虫存活率和正常率之间呈反比关系。尽管在高细菌密度（10⁵个细菌/毫升）条件下幼虫存活率较高（79%），但正常幼虫的百分比为11%。除了形状不规则外，异常幼虫还出现了膜瓣缩小的情况。本研究结果表明，在地中海贻贝幼虫养殖期间，溶藻弧菌的浓度应保持在低于10³个细菌/毫升的水平。