An (omics) perspective on the evolution of vision in deep-sea fishes reveals exceptional adaptations to life in the extreme

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10507970" target="_blank" >RIV/00216208:11310/25:10507970 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=uCL~WCI83x" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=uCL~WCI83x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/1365-2435.70074" target="_blank" >10.1111/1365-2435.70074</a>

Result language

angličtina

Original language name

An (omics) perspective on the evolution of vision in deep-sea fishes reveals exceptional adaptations to life in the extreme

Original language description

In the evolution of vision, changes in the number of visual opsin genes, gene conversion, amino acid sequence mutations, and gene expression levels are common molecular mechanisms in how teleost fishes adapt to different aquatic (light) environments. Visual evolution in challenging environments like the deep sea often pushes this to the extreme.Many adaptations to the visual systems of deep-sea fishes have evolved multiple times convergently or in parallel in different species, for example, morphologically tubular eyes and rod-only retinas, and molecularly rhodopsin duplications. Others are unique to this extreme environment, such as 38 rhodopsins in spinyfins or far-red vision in dragon fishes using a visual pigment plus photosensitizer (bacteriochlorophyll) complex. This illustrates the strength of the selective pressures, including low-light conditions, cold temperatures, and extreme pressure, which act to shape vision at depth.Rod and cone cell identity (and dichotomy) is unclear in some deep-sea fishes, as evidenced by the molecular mismatch with the photoreceptor morphology or among the expressed visual genes (e.g. opsin vs. phototransduction cascade genes). Rod-like cones are found in some deep-sea fishes (e.g. in pearlsides) and are thought to result from cell transmutation, a process in which the gross morphology of the cell resembles rods, but the molecular machinery is typical of cones. In other fish species (e.g. Aulopiformes), there is a mismatch between the expression of opsins and phototransduction cascade genes. The mechanism is unknown but may be caused by transmuted rod-like cones, which have, in addition, co-opted the rod opsin (to replace its cone opsin). Comparative-omic and imaging approaches have the power to detect and evolutionarily explain such intermediate photoreceptor cell types.Leveraging recent advances in the -omics and imaging fields, such as spatial single-cell multi-omics approaches will significantly increase the depth and breadth of the species studied. This dramatically enhances the comparative power of deep-sea fish visual exploration, enabling us to address century-old and newly emerging questions in this exciting field.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10602 - Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology

Project

<a href="/en/project/GA21-31712S" target="_blank" >GA21-31712S: Zoom in the fish eye & blood: molecular evolution of functional adaptations in the deep-sea and freshwater fishes</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Functional Ecology

ISSN

0269-8463

e-ISSN

1365-2435

Volume of the periodical

39

Issue of the periodical within the volume

10

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

2601-2610

UT code for WoS article

001499855800001

EID of the result in the Scopus database

2-s2.0-105006903918