Premium
A histochemical and ultrastructural study of the development of the propulsive musculature of the brown trout, Salmo trutta L., in relation to its swimming behaviour
Author(s) -
Proctor C.,
Mosse P. R. L.,
Hudson R. C. L.
Publication year - 1980
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1980.tb03708.x
Subject(s) - salmo , biology , brown trout , hatching , ultrastructure , anatomy , population , embryogenesis , fish <actinopterygii> , zoology , embryo , fishery , ecology , demography , sociology
The differentiation of the myotomal muscle types in the propulsive musculature of Salmo trutta has been investigated histochemically and ultrastructurally from late embryonic to free‐swimming fish at 5° months post fertilisation and related to observed changes in swimming behaviour. A histochemical and ultrastructural characterisation was also made of the major myotomal muscle fibre types in fingerling and yearling S. trutta . Two distinct populations of muscle cell types can be recognised prior to hatching. The early development of the white fibre population is related to the short, burst‐type swimming activity at early stages. The later increase in the development of the red fibre population is directly related to the appearance of sustained swimming activity. The swimming performance of freeswimming alevins has been investigated and the results are discussed in comparison to adult fish.