Subterranean life: Behavior, metabolic, and some other adaptations of Astyanax cavefish
| Autor: | Emma Rangel-Huerta, Ataúlfo Martínez-Torres, Ernesto Maldonado, Elizabeth Pereida-Jaramillo, Elizabeth Rodriguez-Salazar |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Cavefish Biology Environment 010603 evolutionary biology 01 natural sciences Gene flow 03 medical and health sciences Cave Genetics Animals Ecology Evolution Behavior and Systematics geography geography.geographical_feature_category Behavior Animal Ecology Characidae Adaptation Physiological Caves 030104 developmental biology Aquatic environment Molecular Medicine Fish Animal Science and Zoology Developmental Biology |
| Zdroj: | Journal of experimental zoology. Part B, Molecular and developmental evolutionREFERENCES. 334(7-8) |
| ISSN: | 1552-5015 |
| Popis: | The ability of fishes to adapt to any aquatic environment seems limitless. It is enthralling how new species keep appearing at the deep sea or in subterranean environments. There are close to 230 known species of cavefishes, still today the best-known cavefish is Astyanax mexicanus, a Characid that has become a model organism, and has been studied and scrutinized since 1936. There are two morphotypes for A. mexicanus, a surface fish and a cavefish. The surface fish lives in central and northeastern Mexico and south of the United States, while the cavefish is endemic to the "Sierra del Abra-Tanchipa region" in northeast Mexico. The extensive genetic and genomic analysis depicts a complex origin for Astyanax cavefish, with multiple cave invasions and persistent gene flow among cave populations. The surface founder population prevails in the same region where the caves are. In this review, we focus on both morphotype's main morphological and physiological differences, but mainly in recent discoveries about behavioral and metabolic adaptations for subterranean life. These traits may not be as obvious as the troglomorphic characteristics, but are key to understand how Astyanax cavefish thrives in this environment of perpetual darkness. |
| Databáze: | OpenAIRE |
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