DEEP-SEA HYDROTHERMAL COMMUNITIES IN SOUTHWESTERN PACIFIC BACK-ARC BASINS (THE NORTH FIJI AND LAU BASINS) - COMPOSITION, MICRODISTRIBUTION AND FOOD-WEB
DEEP-SEA HYDROTHERMAL COMMUNITIES IN SOUTHWESTERN PACIFIC BACK-ARC BASINS (THE NORTH FIJI AND LAU BASINS) - COMPOSITION, MICRODISTRIBUTION AND FOOD-WEB
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DOI：
10.1016/0025-3227(94)90178-3
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发表时间：
1994-01-01
期刊：
影响因子：
2.9
通讯作者：
SOAKAI, S
中科院分区：
文献类型：
--
作者：
DESBRUYERES, D;ALAYSEDANET, AM;SOAKAI, S
1989年，法国深海潜水器鹦鹉螺号的两次潜水巡航致力于研究西南太平洋两个弧后盆地（劳盆地和北斐济盆地）扩张中心的热液喷口生物学。在这两个案例中，我们访问了两个主要的活动地点：北斐济盆地的 White Lady 和 Mussel Valley 以及 Lau 盆地的 Hine Hina 和 Vai Lili。聚集在活跃喷口周围的动物群落主要是两种蜗牛 Ifremeria nautilei 和 Alviniconcha hessleri 以及一种或两种属于 Bathymodiolus 的贻贝类。通过卡尔文-本森循环诊断酶 RuBPcase 的活性检测到，这些物种与细胞内共生中的化能自养细菌相关。有蒂和无柄的藤壶占据了该遗址的外缘，与生活在 EPR 遗址中的食性较好的蛇类类似。这些地区的极端炎热地区很少或没有被藻类或其他类群殖民。在劳盆地，“冷泉”地点位于活跃的热喷口或暖喷口的外围，主要是前卫目和鲆科动物。除了在“贻贝谷”遗址旁边与Bathymodiolus 相关的大量突触海参之外，在一般水平上，两个弧后盆地的关联之间没有发现重大差异。
During the year 1989, two diving cruises of the French deep-sea submersible Nautile were devoted to the study of hydrothermal vent biology in spreading centers of two Southwestern Pacific back-arc basins (Lau Basin and North Fiji Basin). In both cases, two major active sites were visited: White Lady and Mussel Valley in the North Fiji Basin and Hine Hina and Vai Lili in Lau Basin. The faunal associations clustered around active vents are dominated by two species of snails Ifremeria nautilei and Alviniconcha hessleri and one or two species of mytilids belonging to Bathymodiolus. These species are associated with chemoautolithotrophic bacteria in intracellular symbiosis as detected by the activity of the Calvin-Benson cycle diagnostic enzyme RuBPcase. Pedunculate and sessile barnacles dominated the outer rim of the site and are analogs of the fiter-feeding serpulids living in the EPR sites. The hot extremes of the sites are poorly or not colonized by alvinellids or other taxa. In the Lau Basin, ''cold seep'' sites are found at the periphery of active hot or warm ventsand are dominated by vestimentiferans and pogonophorans. No major differences were seen between associations of the two back-arc basins at the generic level with the exeption of the abundance of synaptid holothurians associated with Bathymodiolus in side the ''Mussel Valley'' site.