影响东寨港红树林中光背团水虱分布的生态因子研究

Studies on ecological factors affecting the distribution of Sphraeroma retrolaevis in the mangrove forest in Dongzhaigang

作者于2012年6月对东寨港红树林保护区中光背团水虱(Sphraeroma retrolaevis)虫害区域的水质因子和光背团水虱的分布情况进行了调查研究。结果表明:光背团水虱的水平分布与水温、盐度、pH值、COD值、OD值没有直接关系;调查区内影响团水虱水平分布的主要水质因子是:总氮质量浓度为0.356～0.605 mg/L,总磷质量浓度为0.050～0.054 mg/L,浮游生物量为1.23～1.82 mg/L;网纹藤壶的生长与光背团水虱在垂直分布有直接关系,光背团水虱距离网纹藤壶越远,光背团水虱洞穴数量越少,其关系函数为y=6.15x2–9.17x+16.45,R2=0.9879。

The water quality factors and the distribution of Sphraeroma retrolaevis in the mangrove forest in Dongzhaigang were studied in Jun.2012.Results show that the horizontal distribution of S.retrolaevis has no direct relationship with water temperature,salinity,pH,COD and OD.The main water quality factors affecting the horizontal distribution of S.retrolaevis in survey area are total nitrogen content（0.356～0.605 mg/L）,total phosphorus content（0.050～0.054 mg/L） and mean density of plankton（1.23～1.82 mg/L）.There is a direct relationship between Balauustus utinomi and the vertical distribution of S.retrolaevis.The farther the distance between B.utinomi and S.retrolaevis is,the fewer the number of S.retrolaevis caves is.The relation function can be expressed as ＂y = 6.15x2 –9.17x ＋ 16.45＂ and ＂R2 = 0.9879＂.