Abades S, Richardson C A, Otaíza R
Facultad de Ciencias, Universidad Católica de la Ssma, Concepción, Paicaví 3000, Concepción, Chile.
Biosystems. 2000 Aug-Sep;57(3):163-72. doi: 10.1016/s0303-2647(00)00098-8.
Patterns of tidal microgrowth bands present in acetate peels of shell sections of the Chilean mussel Semimytilus algosus from three tidal levels on a wave-exposed shore were analyzed for the presence of recurring periodicities using numerical tools derived from signal nonlinear analysis. Both chaotic and coherent structure were found within the microgrowth pattern record, with mussels from the middle and lower tidal zones displaying a coherent structure to the patterns, whilst those from the upper tidal level displayed a chaotic banding pattern with a strong tidal component. It is suggested that because mussels in the upper tidal zone are subject to a wider suite of environmental conditions they are influenced by the spring-neap lunar tidal cycle to a greater extent than those growing in the mid to low tidal zone and display deterministic chaotic growth. This allows the mussels to grow continuously in the highly variable conditions that prevail in the upper tidal zone without continuous interruptions to shell deposition.
利用从信号非线性分析中得出的数值工具，对来自暴露于海浪的海岸三个潮位的智利贻贝半贻贝贝壳部分醋酸纤维素薄片中存在的潮汐微生长带模式进行了分析，以寻找反复出现的周期性。在微生长模式记录中发现了混沌和相干结构，中潮带和低潮带的贻贝显示出模式的相干结构，而高潮带的贻贝则显示出具有强烈潮汐成分的混沌带状模式。有人认为，由于高潮带的贻贝面临更广泛的环境条件，它们比中低潮带生长的贻贝受到朔望月潮汐周期的影响更大，并表现出确定性混沌生长。这使得贻贝能够在上潮带普遍存在的高度可变条件下持续生长，而不会使贝壳沉积持续中断。
