297 Scrippsiella trochoidea 錐狀斯克裡普藻 Phylum: Dinoflagellata 门：甲藻門 Class: Dinophyceae 纲：甲藻綱 Order: Thoracosphaerales 目：胸球藻目 Family: Thoracosphaeraceae 科：胸球藻科 Morphology Cells are solitary and pear-shaped, with dorsoventral compression. The epicone is conical, with straight or slightly convex margins, tapering into a short apical horn. The hypocone is hemispherical and generally shorter than the epicone. The post-median cingulum is deeply excavated and descending, with a displacement of about 0.5 cingular width. Sulcus is broad, almost reaching the antapex. 形態 細胞單獨生活，梨形,背腹扁平。上殼呈錐形，邊緣直或者輕微凸起，收縮成一個 短的頂角。下殼半球形，一般比上殼短。橫溝位於中部靠下，深凹，下行，生成橫 溝寬度一半的位移。縱溝較寬，幾乎達到細胞底部。 Ecology and distribution Scrippsiella trochoidea is a cosmopolitan neritic and estuarine species. It is potentially harmful algae which is capable to form blooms. Scrippsiella trochoidea has caused more than 600 blooms in Hong Kong coastal waters from 2000 to 2023. Scrippsiella trochoidea is generally considered as nontoxic species, however, it may cause some lethal effects on coastal ecosystems and marine organisms (Hallegraeff, 1993; Shin et al., 2003; Tang and Gobler, 2012). 生態與分佈
RkJQdWJsaXNoZXIy NDk5Njg=