Potentially harmful Ostreopsis spp. in the coastal waters of Alexandria - Egypt
Potentially harmful Ostreopsis spp. in the coastal waters of Alexandria - Egypt
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DOI：
10.12681/mms.300
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发表时间：
2012-09
影响因子：
2.8
通讯作者：
A. Ismael;Y. Halim
中科院分区：
文献类型：
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作者：
A. Ismael;Y. Halim
牡蛎属在埃及地中海沃茨首次发现。2005年6月至2007年12月期间，每月从Abu Qir的岩石中采集不到1.5米深的大型藻类样本，并对其相关的微藻进行检查。两个Ostreopsis形态型的种群被发现出现在这个位置，亚历山大以东，即，O . cf ovata Fukuyo和Ostreopsis morph1。拟牡蛎属Ostreopsis spp.在夏天是丰富和占主导地位的。它们作为褐藻Padina sp.和Sargassum sp.的附生植物更为丰富，在红藻Cortina sp.上不太丰富，贾尼亚属，对绿色藻类石莼属（Ulva spp.）拟牡蛎属在夏季的几个月里，在同一种大型藻类上也发现了卵形体，但数量要少得多。牡蛎属交替的优势与底栖蓝藻颤藻属。和硅藻Licmophora sp.。其他丰度较低的底栖甲藻包括Amphidinium carterae、Gymnodinium sp.和Prorocentrum lima。
Ostreopsis spp. has been reported for the first time from the Egyptian Mediterranean waters. Macroalgal samples were collected monthly between June 2005 and December 2007, from the rocks at Abu Qir, from less than 1.5 m depth, and their associated microalgae examined. Populations of two Ostreopsis morphotypes were found to occur in this location, east of Alexandria, viz., O . cf ovata Fukuyo and Ostreopsis morph1. The Ostreopsis spp. was abundant and dominant during the summer. They were more abundant as epiphytes of the brown algae Padina sp. and Sargassum sp., less abundant on the red algae Corallina sp., Jania sp., Laurencia sp. and even less so on the green algae Ulva spp. Ostreopsis cf. ovata was also identified during the summer months on the same macroalgal species, although in a much lower abundance. Ostreopsis spp. alternated in dominance with the benthic cyanobacteria Oscillatoria spp. and the diatom Licmophora sp. Other benthic dinoflagellates recorded at low abundance included Amphidinium carterae , Gymnodinium sp. and Prorocentrum lima .