Environment and plasticity of myogenesis in teleost fish

Embryonic development in teleosts is profoundly affected by environmental conditions, particularly temperature and dissolved oxygen concentrations. The environment determines the rate of myogenesis, the composition of sub-cellular organelles, patterns of gene expression, and the number and size dist...

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Bibliographic Details
Published in:Journal of Experimental Biology
Main Author: Johnston, Ian Alistair
Format: Article in Journal/Newspaper
Language:English
Published: 2006
Subjects:
temperature
oxygen
myotomal muscle
environmental genomics
phenotypic plasticity
ectotherm
developmental plasticity
skeletal muscle
TROUT ONCORHYNCHUS-MYKISS
HERRING CLUPEA-HARENGUS
CARP CYPRINUS-CARPIO
MUSCLE-FIBER NUMBER
SALMO-SALAR L
MESSENGER-RNA EXPRESSION
DICENTRARCHUS-LABRAX L.
HEAVY-CHAIN ISOFORMS
GROWTH-FACTOR-I
SPARUS-AURATA L
Salmo salar
Online Access:https://risweb.st-andrews.ac.uk/portal/en/researchoutput/environment-and-plasticity-of-myogenesis-in-teleost-fish(c19a256e-7255-48e4-b386-8e046d423729).html
https://doi.org/10.1242/jeb.02153
http://www.scopus.com/inward/record.url?scp=33746025969&partnerID=8YFLogxK
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Summary:Embryonic development in teleosts is profoundly affected by environmental conditions, particularly temperature and dissolved oxygen concentrations. The environment determines the rate of myogenesis, the composition of sub-cellular organelles, patterns of gene expression, and the number and size distribution of muscle fibres. During the embryonic and larval stages, muscle plasticity to the environment is usually irreversible due to the rapid pace of ontogenetic change. In the early life stages, muscle can affect locomotory performance and behaviour, with potential consequences for larval survival. Postembryonic growth involves myogenic progenitor cells (MPCs) that originate in the embryo. The embryonic temperature regime can have long-term consequences for the growth of skeletal muscle in some species, including the duration and intensity of myotube formation in adult stages. In juvenile and adult fish, abiotic (temperature, day-length, water flow characteristics, hypoxia) and biotic factors (food availability, parasitic infection) have complex effects on the signalling pathways regulating the proliferation and differentiation of MPCs, protein synthesis and degradation, and patterns of gene expression. The phenotypic responses observed to the environment frequently vary during ontogeny and are integrated with endogenous physiological rhythms, particularly sexual maturation. Studies with model teleosts provide opportunities for investigating the underlying genetic mechanisms of muscle plasticity that can subsequently be applied to non-model species of more ecological or commercial interest.

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