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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Spectral sensitivity differences in two Mysis sibling species (Crustacea, Mysida): Adaptation or phylogenetic constraints?
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Spectral sensitivity differences in two Mysis sibling species (Crustacea, Mysida): Adaptation or phylogenetic constraints?

机译：两个Mysis同胞物种（甲壳纲，Mysida）的光谱敏感性差异：适应还是系统发育限制？

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摘要

The variation in eye spectral sensitivities of the closely related mysid species Mysis relicta Loven, 1862 and Mysis salemaai Audzijonyte and Vainola, 2005 was studied in sympatric and allopatric populations from the brackish Baltic Sea and from two lakes representing different light environments. In the Baltic Sea the maximum spectral sensitivity of M. relicta, measured by the electroretinogram (ERG) technique, was shifted by ca 20 run to longer wavelengths than in M. salemaai (564 and 545 nm, respectively). The spectral sensitivity of M. salemaai was closer to that of marine mysid species, which is consistent with its broader euryhalinity and the presumed longer brackish-water history. The species-specific sensitivities in the Baltic Sea were not affected by regional differences in light environments. In two lake populations of M relicta, the spectral sensitivity was further shifted by ca 28 nm towards the longer wavelengths compared with the conspecific Baltic Sea populations. The spectral sensitivities in the four M. relicta populations were not correlated to the current light conditions, but rather to the phylogeo-graphic histories and fresh- vs. brackish-water environments. A framework to further explore factors affecting spectral sensitivities in Mysis is suggested.
机译：在咸淡的波罗的海和两个代表不同光照环境的湖泊的同胞和异相种群中研究了密切相关的类蝇s物种Mysis relicta Loven，1862年和Mysis salemaai Audzijonyte和Vainola，2005年对眼睛光谱敏感性的变化。在波罗的海，通过视网膜电图（ERG）技术测得的残re甲烷的最大光谱灵敏度被移动了约20纳米，比塞勒梅氏菌（分别为564和545 nm）的波长更长。 salemaai的光谱敏感性更接近于海洋类腮腺物种，这与其更宽的欧洲盐度和假定的咸淡水历史相一致。在波罗的海，特定物种的敏感性不受光照环境的区域差异的影响。与同种波罗的海种群相比，在两个M. relicta湖湖泊种群中，光谱灵敏度进一步向更长的波长偏移了约28 nm。在四个遗物分枝杆菌种群中的光谱敏感性与当前的光照条件无关，而与系统地理学的历史以及淡水和咸淡水环境有关。建议了一个框架，以进一步探索影响Mysis光谱灵敏度的因素。

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