不同木质生物污损物种覆盖水平下的木食性双壳贝 Bankia martensi ( ) 的新陈代谢和生长情况

IF 2.1 4区 地球科学 Q2 MARINE & FRESHWATER BIOLOGY
Boris A. López , María E. Riobó , Elizabeth A. Guzmán , Matthew R. Lee , Margarita C. Pérez
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引用次数: 0

摘要

双壳贝类(船虫)是海洋环境中的主要木材降解者。然而,人们对这些海洋木材蛀虫与木材相关生物污损物种之间的生物相互作用知之甚少。滤食性物种和海藻是水下木材上经常出现的生物污点。以海洋食木质双壳类动物()为模型,我们假设增加木材上生物污损物种的数量将减少船虫的繁殖和随后的生长。2020 年和 2021 年春季,我们在智利南部的梅特里巴伊亚利用松木板进行了操纵生物污损覆盖率的实验。实验设定了三个生物污损覆盖率水平(低:0%-10%;中:40%-50%;高:90%-100%)。五个月后,测量了面板上的穿孔数量(代表幼虫沉降密度)和样本尺寸(长度、宽度和体积)。观察发现,木板上的穿孔密度与生物污点覆盖率之间存在反比关系。最常见的生物污损物种是贻贝和海藻,它们倾向于定居在上表面和侧表面,而橡子藤壶和浮游动物则更多地定居在下表面。穿孔的数量随面板表面的不同而变化,上表面和侧表面的穿孔密度较高,而下表面的穿孔密度较低。与生物污点覆盖率中等和较高的面板相比,生物污点覆盖率低的面板上的标本在长度和体积上都较大,而宽度则不随处理方法的不同而变化。我们的研究结果表明,生物污点覆盖率降低了褐翅蝶的繁殖和生长速度,进而降低了褐翅蝶造成的木材降解率。未来与选定的生物污损物种(滤食性物种,如贻贝和藤壶)进行操纵实验,并结合船虫繁殖特征的测量,将有助于了解这些海洋生物群落中蛀木物种和生物污损物种之间的生物相互作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Recruitment and growth of the xylophagous bivalve Bankia martensi (Stempell, 1899) with different levels of wood biofouling species cover

Teredinid bivalves (shipworms) are the main wood degraders in marine environments. However, little is known about the biological interactions between these marine wood borers and wood-associated biofouling species. Filter-feeding species and seaweeds are frequent biofoulers on the submerged wood. Using the marine xylophagous bivalve Bankia martensi (Stempell, 1899) as a model, we hypothesized that increasing the abundance of biofouling species on wood will decrease the recruitment and subsequent growth of the shipworm B. martensi. During the springs of 2020 and 2021, experiments manipulating biofouling cover were carried out using pine panels in Bahía Metri, southern Chile. Three experimental levels of biofouling cover were established (low: 0%–10%, intermediate: 40%–50%, and high: 90%–100%). After five months, the number of B. martensi perforations (as proxy as larval settlement density) and specimen sizes (length, width and volume) in the panels were measured. An inverse relationship between the perforation densities of B. martensi and biofouling cover on the wooden panels was observed. The most frequent biofouling species were mussels and seaweeds which tended to settle on the upper and lateral surfaces, while acorn barnacles and bryozoans were more frequent on the lower surface. Bankia martensi perforations were reduced with increasing biofouling cover. The number of perforations varied according to the panel surface, higher density on the upper and lateral surfaces and lower on the underside. Bankia martensi specimens were larger, both in length and in volume, in panels with low biofouling compared to intermediate and high biofouling cover, while width did not vary with treatment. Our results suggest that the biofouling cover decreases B. martensi recruitment and growth rates, which in turn reduces the wood degradation rate caused by this teredinid. Future manipulative experiments with selected biofouling species (filter-feeders, such as mussels and barnacles), as well as incorporating measurements of reproductive traits of shipworms could help in understanding the biological interactions between these marine communities of wood-boring and biofouling species.

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来源期刊
Journal of Sea Research
Journal of Sea Research 地学-海洋学
CiteScore
3.20
自引率
5.00%
发文量
86
审稿时长
6-12 weeks
期刊介绍: The Journal of Sea Research is an international and multidisciplinary periodical on marine research, with an emphasis on the functioning of marine ecosystems in coastal and shelf seas, including intertidal, estuarine and brackish environments. As several subdisciplines add to this aim, manuscripts are welcome from the fields of marine biology, marine chemistry, marine sedimentology and physical oceanography, provided they add to the understanding of ecosystem processes.
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