Institut de Systématique, Évolution, Biodiversité, ISYEB, UMR 7205, Université des Antilles. Équipe Biologie de la mangrove. UFR SEN. 97100 Pointe-à-Pitre. France; Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, LOV, F-06230 Villefranche-sur-Mer, France.
Institut de Systématique, Évolution, Biodiversité, ISYEB, UMR 7205, Université des Antilles. Équipe Biologie de la mangrove. UFR SEN. 97100 Pointe-à-Pitre. France.
Harmful Algae. 2019 Jan;81:18-29. doi: 10.1016/j.hal.2018.11.012. Epub 2018 Nov 28.
Epibenthic dinoflagellates were monitored monthly over an 18 month period in Guadeloupe and Martinique (Lesser Antilles, Caribbean Sea). These islands are located in the second most affected ciguatera fish poisoning (CFP) region of the world. Guadeloupe presented five times more total epibenthic dinoflagellates and two times less abundant Gambierdiscus spp. compared to Martinique, although the area of frequent CFP outbreaks covers Guadeloupe and not Martinique. Results did not show any clear seasonal variations of benthic dinoflagellates abundances. Temperature and salinity were not driving parameters in the evolution of total benthic dinoflagellate abundances. Preferential associations were found between macrophyte species and epibenthic dinoflagellates. The Phaeophyceae Dictyota spp. hosted the highest abundances of total epibenthic dinoflagellates, composed mainly of Ostrepsis and Prorocentrum genera. The seagrass Halophila stipulacea hosted the highest abundances of Gambierdiscus spp. and Sinophysis spp. whilst the highest abundance of Coolia was determined on Galaxaura spp. The pelagic Sargassum spp. hosted the lowest abundances of benthic dinoflagellates including the genus Gambierdiscus.
在小安的列斯群岛加勒比海域的瓜德罗普岛和马提尼克岛（马提尼克岛），我们对附着在海底的甲藻进行了为期 18 个月的每月监测。这些岛屿位于受石房蛤毒素中毒影响第二严重的地区。与马提尼克岛相比，瓜德罗普岛的总附着甲藻多了五倍，而 Gambierdiscus spp. 的数量却少了两倍，尽管经常爆发石房蛤毒素中毒的地区覆盖了瓜德罗普岛而不是马提尼克岛。结果表明，附着甲藻的丰度没有明显的季节性变化。温度和盐度不是影响附着甲藻丰度变化的驱动因素。大型藻类物种与附着甲藻之间存在优先关联。褐藻 Dictyota spp. 承载着最高的总附着甲藻丰度，主要由 Ostrepsis 和 Prorocentrum 属组成。在海草 Halophila stipulacea 上 Gambierdiscus spp. 和 Sinophysis spp. 的丰度最高，而 Coolia 的丰度最高则是在 Galaxaura spp. 上。而浮游马尾藻属（Sargassum spp.）承载着最低的附着甲藻丰度，其中包括 Gambierdiscus 属。
