Variable Eyes Degeneration of the Cave Carp Sinocyclocheilus bicornutus (Cyprinidae) from Guizhou Province, Southwest China

H. Wen; Вен Х.; Y. Wang; Ванг Я.; X. Yang; Янг С.; S. Yan; Ян Ш.; T. Luo; Луо Т.; Y. He; Хе Ё.; J. Zhou; Джоу Ц.

doi:10.31857/S0042875223010204

Variable Eyes Degeneration of the Cave Carp Sinocyclocheilus bicornutus (Cyprinidae) from Guizhou Province, Southwest China

Authors: Wen H.¹^,2, Wang Y.¹, Yang X.¹, Yan S.¹, Luo T.¹, He Y.³, Zhou J.¹
Affiliations:
1. School of Life Science, School of Karst Science, Guizhou Normal University, Guiyang, China
2. College of science, Qiongtai Normal University, Haikou, China
3. Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
Issue: Vol 63, No 1 (2023)
Pages: 19-19
Section: Articles
URL: https://rjmseer.com/0042-8752/article/view/650434
DOI: https://doi.org/10.31857/S0042875223010204
EDN: https://elibrary.ru/DANIUX
ID: 650434

Cite item

Full Text

Open Access
Restricted Access

Access granted
Restricted Access

Subscription Access

Abstract

Sinocyclocheilus bicornutus is a valid cave–dwelling cyprinid species with small eyes from Guizhou province, southwest China, the close relatives of which are also small eyed and obligate cave–dwelling. Our expeditions in 2015 to 2017 found the intraspecific variability of eye degeneration based on total 114 specimens collected from one lighted and two dark caves with an altitude of about 1350 m. Three morphotypes, the small eyed, the rudimentary eyed, and the eyeless, co-occurred in each cave. The eye size closely correlates with the standard length SL in the lighted cave, while the correlation of the eye size and SL become loosely related in the dark caves which associated with increased proportion of significantly degenerative eyed morphotypes. It implies that the developmental retardation occurs in the darkness and remains in adult stage. The variable eye-reduced populations of S. bicornutus provide an interesting model to address the involvement of potential epigenetic mechanisms with the regressive evolution of cavefish.

Keywords

cavefish, regressive evolution, phenotypic variation, epigene

References

Supplementary files

Supplementary Files

Action

1. JATS XML

Download

Username
Password
Remember me

Forgot password?	Register

Username
Password
Remember me

Forgot password?	Register

Vol 65, No 2 (2025)

Variable Eyes Degeneration of the Cave Carp Sinocyclocheilus bicornutus (Cyprinidae) from Guizhou Province, Southwest China

Full Text

Abstract

Keywords

About the authors

H. Wen

Y. Wang

X. Yang

S. Yan

T. Luo

Y. He

J. Zhou

References

Supplementary files