Subterranean fishes of the world: an account of the subterranean (hypogean) fishes described up to 2003 with a bibliography 1541-2004

Bichuette, Maria Elina

doi:10.1590/s1679-62252007000100014

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Others, like the Mexican cave tetra Astyanax mexicanus and fish of the genus Sinocyclocheilus in China have repeatedly colonized subterranean systems, with some cave populations being of more recent origin [8][9][10][11] . Few cave fish species are known in temperate regions [12][13][14] , one of these being the Aach cave loach, representing the first, and currently only known, cave fish in Europe. Behrmann-Godel et al 15 established that stone loach Barbatula barbatula entered the Danube-Aach subterranean system in the most recent post-glacial period.…”

Section: Introductionmentioning

confidence: 99%

Phenotypic plasticity and genetic differentiation drive troglomorphic character development in European cave loach

Behrmann‐Godel

Roch

Boehm

et al. 2023

Preprint

View full text Add to dashboard Cite

Using a cross-fostering experiment, we provide evidence for the contribution of both genetic differentiation and phenotypic plasticity to troglomorphic character development in the recently discovered cave form ofBarbatula barbatula, an evolutionarily young lineage and first cavefish described in Europe, the northernmost record. We established reproducing populations of cave- and surface-dwelling loaches to produce cave, surface, and hybrid offspring and reared the F1 fish in a common garden setting in total darkness (DD) to simulate cave conditions as well as under the natural photoperiod (DL). We observed significant differences in the occurrence and extent of typical troglomorphic target characters among the offspring groups. Regardless of rearing conditions, cave fish exhibited smaller eyes, lighter body coloration, longer barbels, and larger olfactory epithelium than seen in surface fish. Hybrids in both rearing conditions generally showed an intermediate level of these traits. Surface and hybrid DD fish differed from the DL groups, resembling the cave fish phenotype in several traits, including eye size and body pigmentation. In contrast, cave and hybrid DL fish groups resembled surface fish phenotypes. Results confirmed that troglomorphic traits arise from heritable genetic differentiation of cave from surface forms and that phenotypic plasticity contributes to the process of adaptation to novel light conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

Phenotypic plasticity and genetic differentiation drive troglomorphic character development in European cave loach

Behrmann‐Godel

Roch

Boehm

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…However, even in these ostensibly barren nutrient-poor environments, an array of organisms, notably ray-finned fishes, manage to survive, and are indeed restricted to these habitats (Culver and Pipan, 2009;Rétaux and Casane, 2013). The cavefish, which are found in all continents except Antarctica, are the most successful troglodytes, exhibiting diversified phylogenetic structure and geographical distribution, and spanning 10 orders and 22 families (Bichuette, 2007;Trajano et al, 2010;Soares and Niemiller, 2013;Behrmann-Godel et al, 2017). This wide distribution suggests multiple instances of independent evolution that have resulted in common troglomorphic characteristics, most notably small, sunken, or entirely absent eyes.…”

Section: Introductionmentioning

confidence: 99%

Comparative Transcriptome Profiling of the Loaches Triplophysa bleekeri and Triplophysa rosa Reveals Potential Mechanisms of Eye Degeneration

et al. 2020

View full text Add to dashboard Cite

Eye degeneration is one of the most obvious characteristics of organisms restricted to subterranean habitats. In cavefish, eye degeneration has evolved independently numerous times and each process is associated with different genetic mechanisms. To gain a better understanding of these mechanisms, we compared the eyes of adult individuals of the cave loach Triplophysa rosa and surface loach Triplophysa bleekeri. Compared with the normal eyes of the surface loach, those of the cave loach were found to possess a small abnormal lens and a defective retina containing photoreceptor cells that lack outer segments. Sequencing of the transcriptomes of both species to identify differentially expressed genes (DEGs) and genes under positive selection revealed 4,802 DEGs and 50 genes under positive selection (dN/dS > 1, FDR < 0.1). For cave loaches, we identified one Gene Ontology category related to vision that was significantly enriched in downregulated genes. Specifically, we found that many of the downregulated genes, including pitx3, lim2, crx, gnat2, rx1, rho, prph2, and b|g-crystallin are associated with lens/retinal development and maintenance. However, compared with those in the surface loach, the lower dS rates but higher dN rates of the protein-coding sequences in T. rosa indicate that changes in amino acid sequences might be involved in the adaptation and visual degeneration of cave loaches. We also found that genes associated with light perception and light-stimulated vision have evolved at higher rates (some genes dN/dS > 1 but FDR > 0.1). Collectively, the findings of this study indicate that the degradation of cavefish vision is probably associated with both gene expression and amino acid changes and provide new insights into the mechanisms underlying the degeneration of cavefish eyes.

show abstract

Schistura papulifera, a new species of cave loach from Meghalaya, India (Teleostei: Balitoridae)

Kottelat

Harries

Proudlove

2007

Zootaxa

View full text Add to dashboard Cite

Schistura papulifera, new species, is described from a cave of the Synrang Pamiang system, Meghalaya State, India. It is distinguished from all other known species of Schistura in having the lower half of the head covered by small skin projections and 5 pores in the supratemporal canal of the cephalic lateral-line system. In addition, it has a white body and vestigial eyes. The closest epigean relative of S. papulifera has not yet been identified due to the lack of survey and usable data. The identity of the cave nemacheiline from Siju Cave is briefly discussed, but this remains inconclusive, again due to the lack of material and usable data.

show abstract

Subterranean fishes of the world: an account of the subterranean (hypogean) fishes described up to 2003 with a bibliography 1541-2004

Cited by 3 publications

References 0 publications

Phenotypic plasticity and genetic differentiation drive troglomorphic character development in European cave loach

Phenotypic plasticity and genetic differentiation drive troglomorphic character development in European cave loach

Comparative Transcriptome Profiling of the Loaches Triplophysa bleekeri and Triplophysa rosa Reveals Potential Mechanisms of Eye Degeneration

Schistura papulifera, a new species of cave loach from Meghalaya, India (Teleostei: Balitoridae)

Contact Info

Product

Resources

About