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Genetic bias in repeated evolution of pigment loss in cave populations of the Asellus aquaticus species complex
ID
Fišer, Žiga
(
Author
),
ID
Whitehorn, Hana
(
Author
),
ID
Furness, Tia
(
Author
),
ID
Trontelj, Peter
(
Author
),
ID
Protas, Meredith E.
(
Author
)
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MD5: E59C3D72736BD4AECAAA1944F6F16A83
URL - Source URL, Visit
https://onlinelibrary.wiley.com/doi/10.1002/jez.b.23256
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Abstract
Similar phenotypes can evolve repeatedly under the same evolutionary pressures. A compelling example is the evolution of pigment loss and eye loss in cave‐dwelling animals. While specific genomic regions or genes associated with these phenotypes have been identified in model species, it remains uncertain whether a bias towards particular genetic mechanisms exists. An isopod crustacean, Asellus aquaticus, is an ideal model organism to investigate this phenomenon. It inhabits surface freshwaters throughout Europe but has colonized groundwater on multiple independent occasions and evolved several cave populations with distinct ecomorphology. Previous studies have demonstrated that three different cave populations utilized common genetic regions, potentially the same genes, in the evolution of pigment and eye loss. Expanding on this, we conducted analysis on two additional cave populations, distinct either phylogenetically or biogeographically from those previously examined. We generated F2 hybrids from cave × surface crosses and tested phenotype‐genotype associations, as well as conducted complementation tests by crossing individuals from different cave populations. Our findings revealed that pigment loss and orange eye pigment in additional cave populations were associated with the same genomic regions as observed in the three previously tested cave populations. Moreover, the lack of complementation across all cross combinations suggests that the same gene likely drives pigment loss. These results substantiate a genetic bias in the recurrent evolution of pigment loss in this model system. Future investigations should focus on the cause behind this bias, possibly arising from allele recruitment from ancestral surface populations' genetic variation or advantageous allele effects via pleiotropy.
Language:
English
Keywords:
Asellus aquaticus
,
cave animals
,
parallel evolution
,
pigment loss
,
similar phenotypes
,
genetic bias
,
repeated evolution
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
BF - Biotechnical Faculty
Publication status:
Published
Publication version:
Version of Record
Year:
2024
Number of pages:
Str. 425-436
Numbering:
Vol. 342, iss. 6
PID:
20.500.12556/RUL-160177
UDC:
591
ISSN on article:
1552-5015
DOI:
10.1002/jez.b.23256
COBISS.SI-ID:
197987075
Publication date in RUL:
22.08.2024
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64
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12
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Record is a part of a journal
Title:
Journal of experimental zoology. Part B, Molecular and developmental evolution
Shortened title:
J. exp. zool., Part B Mol. dev. evol.
Publisher:
Wiley
ISSN:
1552-5015
COBISS.SI-ID:
520192537
Licences
License:
CC BY-NC 4.0, Creative Commons Attribution-NonCommercial 4.0 International
Link:
http://creativecommons.org/licenses/by-nc/4.0/
Description:
A creative commons license that bans commercial use, but the users don’t have to license their derivative works on the same terms.
Secondary language
Language:
Slovenian
Keywords:
vodni osliček
,
podzemne živali
,
paralelna evolucija
,
izguba pigmenta
,
podobni fenotipi
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P1-0184
Name:
Integrativna zoologija in speleobiologija
Funder:
ARRS - Slovenian Research Agency
Project number:
N1-0069
Name:
Spremenljiva selekcija vzdržuje fenotipski polimorfizem: empirična študija na površinskih in podzemeljskih rakih
Funder:
NIH - National Institutes of Health
Funding programme:
National Eye Institute
Project number:
R15EY029499
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