A New Blind Cave Fish Population of Genus Astyanax: Geography, Morphology and Behavior

  title={A New Blind Cave Fish Population of Genus Astyanax: Geography, Morphology and Behavior},
  author={Luis Espinasa and Patricia Rivas-Manzano and H{\'e}ctor Espinosa P{\'e}rez},
  journal={Environmental Biology of Fishes},
A new population of blind, cave dwelling tetra fish of the genus Astyanax was discovered in Granadas Cave, in the Balsas drainage, southern México. All blind Mexican tetras previously described are from Tampico and San Luis Potosí, northern México. The discovery of a new blind morph thus represents an independent colonization and convergent adaptation to the cave environment by this fish. Individuals of this population display variability of their troglomorphic features. Some individuals… 
A new cave locality for Astyanax cavefish in Sierra de El Abra, Mexico
The name, Chiquitita Cave (Tiny Cave), was chosen in reference to a potential hydrologic connection to “Chica Cave” (small cave), which is among the most studied populations of Astyanax.
Discovery of Two New Astyanax Cavefish Localities Leads to Further Understanding of the Species Biogeography
Astyanax cavefish and the mysid shrimp Spelaeomysis quinterensis show a phylogeographic convergence that supports the notion that the central Sierra de El Abra is a biogeographical region that has influenced the evolutionary history of its aquatic community across species.
Evidence for multiple genetic forms with similar eyeless phenotypes in the blind cavefish, Astyanax mexicanus.
An analysis of variation in the mitochondrial NADH dehydrogenase 2 (ND2) gene among different surface fish and cavefish populations identifies a minimum of two genetically distinctive cavefish lineages with similar eyeless phenotypes.
The rise of Astyanax cavefish
The rise of this model system from its discovery by a Mexican surveyor in 1936 to a powerful system for cave biology and contemporary genetic research is documented, which has provided insight to the mechanisms of phenotypic regression, the genetic basis for constructive trait evolution, and the origin of behavioral novelties.
Evolution in Sinocyclocheilus cavefish is marked by rate shifts, reversals and origin of novel traits
Integration of morphology, phylogeny and geography suggests Sinocyclocheilus fishes are pre-adapted for cave dwelling, and the Astyanax model system is indicated to be an invaluable model system to explore evolutionary novelty.
Female mating preferences in blind cave tetras Astyanax fasciatus (Characidae, Teleostei)
The evolution of the female preference for large male body size within different populations of this species, either surface- or cave-dwelling, is examined.
Contrasting feeding habits of post-larval and adult Astyanax cavefish
The data is discussed with regards to the current developmental and genetic understanding of cavefish morphological and behavioural evolution, particularly regarding its enhanced Vibration Attraction Behaviour (VAB).
Regressive evolution in Astyanax cavefish.
Recent advances in Astyanax development and genetics have revealed some of the molecular and cellular mechanisms involved in trait modification, the number and identity of the underlying genes and mutations, the molecular basis of parallel evolution, and the evolutionary forces driving adaptation to the cave environment.
Adaptive evolution of eye degeneration in the Mexican blind cavefish.
It is concluded that eye degeneration in cavefish may be caused by adaptive evolution and pleiotropy, and a key discovery is that Hedgehog midline signaling is expanded and inhibits eye formation by inducing lens apoptosis in Cavefish embryos.
The end of regressive evolution: examining and interpreting the evidence from cave fishes.
It is argued that evolution of hypogean fauna can be explained by well-known mechanisms within the current context of evolutionary biology.


The fishes of northern and central Veracruz, Mexico
The northern and central part of Veracruz, México, is inhabited by 121 species of fish, in 83 genera and 47 families, and at least nine species represent introductions, purposeful or accidental.
Fauna cavernícola brasileira: composição e caracterização preliminar
As in other tropical regions, terrestrial predator troglobites are rare in Brazil, in contrast with temperate caves, characterized by a larger number of such species (particularly among the spiders and beetles).
Dependence of tectal neuron differentiation on optic innervation in teleost fish.
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Embryo zebrafish subjected to extirpation of eye Anlage before optic nerve outgrowth showed the dependence of differentiation of tectal subventricular cells on optic nerve ingrowth as early as the third day of development, demonstrating that differentiation of these cells is ‘dosage-dependent’ upon the amount of optic innervation.
Vergleichende Untersuchungen an den Hautsinnesorganen ober- und unterirdisch lebender Astyanax-Formen
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There is no evidence for degenerative or constructive tendencies in the highly developed systems of neuromasts, in the nasal organs and in the labyrinths of the cavernicolous forms compared to the
Revised procedures for staining and clearing small fishes and other vertebrates for bone and cartilage study
Description d'un procede de coloration contrastee entre le cartilage (grâce au bleu alcian) et l'os (rouge alizarin S) et d'eclaircissement des tissus par l'utilisation d'enzymes et/ou d'hydroxyde de
Prob - lemas nomenclaturales de las formas mexicanas del género Astyanax ( Pisces : Characidae )
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Fishes from the caves of Yucatan
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