Recruitment preferences of blue mussel spat (Mytilus edulis) for different substrata and microhabitats in the White Sea (Russia)
Recruitment preferences of blue mussel spat (Mytilus edulis) for different substrata and microhabitats in the White Sea (Russia)
复制标题
白海（俄罗斯）不同基质和微生境对蓝贻贝幼苗（Mytilus edulis）的补充偏好
DOI：
10.1023/a:1017502126707
复制
发表时间：
2001
期刊：
影响因子：
2.6
通讯作者：
M. Wahl
中科院分区：
文献类型：
--
作者：
Sergey Dobretsov;M. Wahl
我们测试了蓝色贻贝在小空间尺度上--特别是在给定的底物类型上--污损压力是均匀的假设。人工基质暴露于不同微生境内外的自然补充。这些微生境是混合潮下群落中的单一斑块(直径在米范围内)，由棕藻海带、绒毛脊索、绿丝藻Cladadhora rupestris和蓝贻贝组成。虽然贻贝的唾液在所有的微生境中定居，但招募远不是均匀的。在微生境中，人工基质比活体表面更受欢迎。在生物表面和相关人工基质上表现出相同偏好梯度的微生境之间的补充也不同：对微生境的补充偏好按以下顺序增加：海带对照区域(石质或泥质)<；毛状索<；枝藻；紫贻贝。在较小空间尺度(厘米范围)的第二个实验方法中，我们评估了一些构成微生境物种的相同等量附近的贻贝补充。再一次，海带被证明是最不吸引人的，枝角是最有吸引力的。我们的结论是，贻贝唾液的初级沉降不仅受到底物结构(例如丝状形式)的影响，而且还受到附近微生物的影响--可能是第二次实验所表明的渗出的化学线索。
We tested the assumption that fouling pressure by the blue mussel Mytilus edulis on a small spatial scale – especially onto a given substratum type – is homogeneous. Artificial substrata were exposed to natural recruitment within and outside different microhabitats. These microhabitats were monospecific patches (diameter in the meter range) in a mixed subtidal community composed of the brown algae Laminaria saccharina, and Chorda tomentosa, the green filamentous alga Cladophora rupestris, and the blue mussel Mytilus edulis. While mussel spat settled in all microhabitats, recruitment was far from homogeneous. Within microhabitats, artificial substrata were preferred over living surfaces. Recruitment also differed between microhabitats exhibiting identical preference gradients on living surfaces and associated artificial substrata: recruitment preference for microhabitats increased in the order Laminaria saccharina < control area (stone or mud) < Chorda tomentosa < Cladophora rupestris< Mytilus edulis. In a second experimental approach on a smaller spatial scale (cm range), we assessed mussel recruitment in the vicinity of identical aliquots of some of the microhabitat-constituting species. Again, Laminaria proved to be of least, Cladophora of highest attractiveness. We conclude that primary settlement of mussel spat is not only influenced by the structure of the substratum (e.g. filamentous forms) but additionally by nearby macroorganisms – presumably by exuded chemical cues as suggested by the second experiment.