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首页> 外文期刊>Marine ecology >Scraping and extirpating: two strategies to induce recovery of diseased Gorgonia ventalina sea fans
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Scraping and extirpating: two strategies to induce recovery of diseased Gorgonia ventalina sea fans

机译：刮and和消灭：诱导患病的Gorgonia ventalina海扇恢复的两种策略

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摘要

Coral diseases are currently playing a major role in the worldwide decline in coral reef integrity. One of the coral species most afflicted by disease in the Caribbean, and which has been the focus of much research, is the sea fan Gorgonia ventalina. There is, however, very little information regarding the capacity of sea fans to recover after being infected. The aim of this study was to compare the rehabilitation capacity of G.ventalina after diseased-induced lesions were eliminated either by scraping or extirpating the affected area. Scraping consisted of removing any organisms overgrowing the axial skeleton from the diseased area as well as the purple tissue bordering these overgrowths using metal bristle brushes. Extirpation consisted of cutting the diseased area, including the surrounding purpled tissue, using scissors. The number of scraped colonies that fully or partially rehabilitated after being manipulated and the rates at which the sea fans whose lesions were scrapped grew back healthy tissue were compared among: (i) colonies that inhabited two sites with contrasting environmental conditions; (ii) colonies of different sizes and (iii) colonies with different ratios of area of legions to total colony area (LA/CA). Both strategies proved to be very successful in eliminating lesions from sea fans. In the case of scraping, over 51% of the colonies recovered between 80% and 100% of the lost tissue within 16months. The number of colonies that recovered from scraping was similar among sites and among colony sizes, but differed significantly depending on the relative amount of lesion to colony area (LA/CA). When lesions were extirpated, lesions did not reappear in any of the colonies. We conclude that lesion scraping is useful for eliminating relatively small lesions (i.e. LA/CA<10%), as these are likely to recover in a shorter period of time, whereas for relatively large lesions (LA/CA≥10%) it is more appropriate to extirpate the lesion.
机译：当前，珊瑚病在全球珊瑚礁完整性下降中起着重要作用。海扇Gorgonia ventalina是加勒比海受疾病影响最严重的珊瑚物种之一，也是众多研究的重点。但是，关于海扇感染后恢复能力的信息很少。这项研究的目的是比较刮伤或切除患病区域后消除病原性病变后文氏肠杆菌的康复能力。刮除工作包括使用金属硬毛刷清除患病区域中轴向骨骼上生长过度的任何生物以及毗邻这些过度生长的紫色组织。切除包括用剪刀切开患处，包括周围的紫红色组织。在以下情况下，比较了被操纵后完全或部分恢复的报废菌落的数量以及被报废的海扇重新生长后恢复健康组织的速率：（i）居住在两个地点的环境条件相反的菌落； （ii）不同大小的菌落，以及（iii）军团面积与总菌落面积（LA / CA）比率不同的菌落。事实证明，这两种策略在消除海扇上的损害方面都非常成功。在刮擦的情况下，超过51％的菌落在16个月内恢复了丢失组织的80％至100％。从刮除中恢复的菌落数量在位点之间和菌落大小之间相似，但是根据病灶相对于菌落面积的相对量（LA / CA）差异很大。切除病灶后，在任何菌落中均未出现病灶。我们得出的结论是，刮擦病灶对于消除相对较小的病变（即LA / CA <10％）很有用，因为它们很可能会在较短的时间内恢复，而对于较大的病变（LA /CA≥10％）则是更适合根除病变。

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