Ontogenetic adaptations in the visual systems of deep-sea crustaceans
| Autor: | Tamara M. Frank |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine Light Environment Biology 010603 evolutionary biology 01 natural sciences Deep sea General Biochemistry Genetics and Molecular Biology Life history theory 03 medical and health sciences Downwelling Crustacea Animals Juvenile Life History Traits Vision Ocular Ecology Gnathophausia ingens Articles Darkness biology.organism_classification Adaptation Physiological Crustacean 030104 developmental biology Temporal resolution Adaptation General Agricultural and Biological Sciences |
| Zdroj: | Philosophical Transactions of the Royal Society B: Biological Sciences. 372:20160071 |
| ISSN: | 1471-2970 0962-8436 |
| DOI: | 10.1098/rstb.2016.0071 |
| Popis: | For all visually competent organisms, the driving force behind the adaptation of photoreceptors involves obtaining the best balance of resolution to sensitivity in the prevailing light regime, as an increase in sensitivity often results in a decrease in resolution. A number of marine species have an additional problem to deal with, in that the juvenile stages live in relatively brightly lit shallow (100–200 m depth) waters, whereas the adult stages have daytime depths of more than 600 m, where little downwelling light remains. Here, I present the results of electrophysiological analyses of the temporal resolution and irradiance sensitivity of juvenile and adult stages of two species of ontogenetically migrating crustaceans (Gnathophausia ingensandSystellaspis debilis) that must deal with dramatically different light environments and temperatures during their life histories. The results demonstrate that there are significant effects of temperature on temporal resolution, which help to optimize the visual systems of the two life-history stages for their respective light environments.This article is part of the themed issue ‘Vision in dim light’. |
| Databáze: | OpenAIRE |
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