New data on the distribution of the 'deep-sea' sponges Asbestopluma hypogea and Oopsacas minuta in the Mediterranean Sea
New data on the distribution of the 'deep-sea' sponges Asbestopluma hypogea and Oopsacas minuta in the Mediterranean Sea
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DOI：
10.1111/j.1439-0485.2007.00179.x
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发表时间：
2007-09-01
影响因子：
1.1
通讯作者：
Rada, Tonci
中科院分区：
文献类型：
--
作者：
Bakran-Petricioli, Tatjana;Vacelet, Jean;Rada, Tonci
海绵Oopsacas minuta （hexactinellia）和石棉绵（石棉绵科，Cladorhizidae）属于典型的深水类群，但这两个物种已经在La Ciotat （Marseille地区）的浅水Trois Pepes洞穴中被记录。我们在此报告了在另外两个沿海洞穴中发现的A. hypogea：一个在亚得里亚海中部的Garmenjak岛（克罗地亚），另一个在Jarre岛（法国马赛）。这些种群在现场经历的最高温度不仅明显高于地中海深处的温度，而且也比报告的Trois Pepes洞穴种群高6摄氏度，2002年7月Garmenjak种群高达23.1摄氏度，2004年8月Jarre种群高达22.8摄氏度（暴露时间从几小时到几天）。在相同的深度，两个洞穴内的夏季平均温度仍然比外部温度低几度。在Jarre洞穴（4年监测）和Garmenjak洞穴（5年监测）相对较高的夏季/秋季温度下，A. hypogea种群的长期生存表明，尽管该物种被认为起源于深水，但它可以成功地在这些浅水栖息地定居。我们还报道了亚得里亚海（克罗地亚）的O. minuta的其他洞穴记录：来自赫瓦尔岛Ziva Voda anchialine洞穴的海洋部分，来自Iski Mrtovnjak， Lastovo和Fraskeric群岛的海洋洞穴。在科西嘉岛北部的圣卢西亚河岸（303米）的记录和潜水器Cyana在第勒尼安海中部（2912米，2845米）和爱奥尼亚海（2447米）拍摄的照片证实了该物种在地中海深处的广泛分布。本文回顾了这两个物种在地中海的所有发现，并讨论了它们在沿海洞穴定居的可能模式。
The sponges Oopsacas minuta (Hexactinellida) and Asbestopluma hypogea (Demospongiae, Cladorhizidae) belong to groups that are typical of deep water, but both species have already been recorded from the shallow water Trois Pepes cave at La Ciotat (Marseille area). We here report on subsequent findings of A. hypogea in two other littoral caves: one at Garmenjak Island in the Middle Adriatic (Croatia), the other at Jarre Island (Marseille, France). The maximum temperatures experienced in situ by these populations are not only significantly higher than those from the deep Mediterranean Sea, but they are also up to 6 degrees C higher than those reported for the Trois Pepes cave population, up to 23.1 degrees C in July 2002 for the Garmenjak population and 22.8 degrees C in August 2004 for the Jarre population (exposures from a few hours to a few days). The average summer temperature inside both caves remains several degrees lower than the outside temperature at the same depth. Long-term survival of A. hypogea populations at the relatively high summer/autumn temperatures in both Jarre cave (4 years monitoring) and Garmenjak cave (5 years monitoring) indicates that the species can successfully colonise such shallow habitats in spite of its presumed deep-water origin. We also report additional cave records of O. minuta in the Adriatic (Croatia): from the marine part of the Ziva Voda anchialine cave at Hvar Island, from the marine caves at Iski Mrtovnjak, Lastovo and Fraskeric Islands. The wide distribution of this species in the deep Mediterranean is substantiated by a record on Santa Lucia Bank north of Corsica (303 m) and photographs taken by the submersible Cyana in the Central Tyrrhenian Sea (2912 m, 2845 m) and the Ionian Sea (2447 m). All the findings of these two species in the Mediterranean are reviewed and possible patterns of their colonisation of littoral caves are discussed.