摘要
调查研究了广东沿海海萝属藻类的种类、分布、生长与繁殖特征。广东沿海以海萝、鹿角海萝为主,扁平海萝仅为局部分布,其中海萝的最高生物量可达2801.1g.m-2。粤西海域资源量小于粤东海域,大亚湾为全省该资源最丰富的海域。海萝属藻类分布于月平均表层盐度不低于20的高盐、高透明度海域,在水平分布上鹿角海萝的外海性特征更明显。海萝主要分布于中潮区,鹿角海萝的垂直分布略低于海萝,海萝属藻体能忍耐退潮干露6～8h的能力。调查表明,海萝属藻类生长季节的表层水温一般为23℃以下,生长中期水温低于18℃时生长快,藻体消长存在明显季节变化。广东沿岸海萝生殖器官形成于12月至翌年4月,鹿角海萝生殖器官形成于1～4月。
The species, distribution, growth and propagation of the seaweed Gloiopeltis in coast of Guangdong province were investigated. The result is as follow. The main species of Gloiopeltis in coast of Guangdong province were G. tenax and G.furcata, in which the highest biomass of G.furcata reached 2 801.1 g·m^-2. The other species of Gloiopeltis in Guangdong was G. complanata that was distrib- uted in partial area. The biomass of Gloiopeltis in the east coast was higher than that in the west coast and was the highest in Daya Bay. Gloiopeltis was distributed in sea area which was high diaphaneity and high salinity with not lower than 20 for the surface layer of water salty and G. tenax was more obviously distributed in offshore than G.furcata. G.furcata was mainly distributed in mid-tidal area while G. tenax in lower mid-tidal area. The research also showed that Gloiopeltis could stand exposing to air for 6 ～ 8 h. Growth temperature for Gloiopeltis was lower than 23℃ and it grew faster while water temperature was below 18℃. The growth and disappear of C, loiopeltis was obvious different from the seasons. The reproductive organ of G.furcata formed in December to next year April while G. tenax formed in January to April in coast of Guangdong province.
出处
《南方水产》
2007年第5期7-13,共7页
South China Fisheries Science
基金
广东省科技计划项目(2006B20201061)
中央级公益性科研院所基本科研业务费专项资金资助项目(2007TS01)
关键词
海萝
鹿角海萝
扁平海萝
生态分布
Gloiopeltis furcata
G. tenax
G. complanata
ecological distribution
