Genetic adaptations for the oceanic success of fish eggs.
Trends Genet
; 40(6): 540-554, 2024 Jun.
Article
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| MEDLINE
| ID: mdl-38395683
ABSTRACT
Genetic adaptations of organisms living in extreme environments are fundamental to our understanding of where life can evolve. Water is the single limiting parameter in this regard, yet when released in the oceans, the single-celled eggs of marine bony fishes (teleosts) have no means of acquiring it. They are strongly hyposmotic to seawater and lack osmoregulatory systems. Paradoxically, modern teleosts successfully release vast quantities of eggs in the extreme saline environment and recorded the most explosive radiation in vertebrate history. Here, we highlight key genetic adaptations that evolved to solve this paradox by filling the pre-ovulated eggs with water. The degree of water acquisition is uniquely prevalent to marine teleosts, permitting the survival and oceanic dispersal of their eggs.
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Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Adaptación Fisiológica
/
Peces
Límite:
Animals
Idioma:
En
Año:
2024
Tipo del documento:
Article