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Spectral sensitivity differences in two Mysis sibling species (Crustacea, Mysida): adaptation or phylogenetic constraints?


Audzijonyte, A and Pahlberg, J and Vainola, R and Lindstrom, M, Spectral sensitivity differences in two Mysis sibling species (Crustacea, Mysida): adaptation or phylogenetic constraints?, Journal of Experimental Marine Biology and Ecology, 325, (2) pp. 228-239. ISSN 0022-0981 (2005) [Refereed Article]

Copyright Statement

Copyright 2005 Elsevier B.V. All rights reserved.

DOI: doi:10.1016/j.jembe.2005.05.007


The variation in eye spectral sensitivities of the closely related mysid species Mysis relicta Lovén, 1862 and Mysis salemaai Audzijonytė and Väinölä, 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 nm 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 phylogeographic histories and fresh- vs. brackish-water environments. A framework to further explore factors affecting spectral sensitivities in Mysis is suggested.

Item Details

Item Type:Refereed Article
Keywords:Baltic Sea, electroretinogram technique, Glacial relicts, Mysis relicta, Mysis salemaai, vision
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Ecological physiology
Objective Division:Environmental Management
Objective Group:Coastal and estuarine systems and management
Objective Field:Coastal or estuarine biodiversity
UTAS Author:Audzijonyte, A (Dr Asta Audzijonyte)
ID Code:121161
Year Published:2005
Web of Science® Times Cited:10
Deposited By:Ecology and Biodiversity
Deposited On:2017-09-12
Last Modified:2017-12-01

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