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Hydrobiological Journal
SJR: 0.227 SNIP: 0.575 CiteScore™: 0.24

ISSN Imprimer: 0018-8166
ISSN En ligne: 1943-5991

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Hydrobiological Journal

DOI: 10.1615/HydrobJ.v34.i4-5.120
pages 125-135

Life Forms of Fishes and Energy Value of the Functional-Morphological Coefficient

V. T. Komarov
Institute of the Biology of Southern Seas National Academy of Sciences of Ukraine, Sevastopol, Ukraine


The life form of fishes is regarded as a complex of adaptations to swimming. Each adaptation is characterized by a functional-morphological coefficient K, a morphological index coupled with a hydrodynamic function. It is proposed that K is related to energy, which is described by the equation Q = aKb. This equation is regarded as a taxonomic character. The exponent b characterizes the process and is defined as the energy value of K. Using an example of the relation K = h/l, where h and l are body height and length, it is demonstrated that intraspecific ecomorphs (high- and low-bodied) of Carassius auratus gibelio (Bloch) differ in parameters of swimming by 30%.

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