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A COMPARATIVE STUDY OF SOME BODILY INDICES AND COEFFICIENTS IN ARISTICHTHYS NOBILIS AND HYPOPHTHALMICHTHYS MOLITRIX OF VARIOUS AGES


GABRIELA DUMITRU 1, COSTICă MISăILă 1, ELENA CIORNEA 1
1. “Alexandru Ioan Cuza” University of Iaşi, Carol I Bd., 20 A, Faculty of Biology, Laboratory of Biochemistry and Molecular Biology, Romania e-mail: gabriela.dumitru@uaic.ro; e-mail: cmisaila@uaic.ro e-mail: ciornea@uaic.ro

Issue:

SCSB, Number 2, Volume XX

Section:

Volume 20, No.2 - Animal Biology

Abstract:

The study analyzes comparatively some

bodily indices and coefficients (profile index, Kiselev

index, index of fleshy and the Fulton coefficients) in

Aristichthys nobilis (bighead carp) and

Hypophthalmichthys molitrix (silver carp), from the

first up to the fourth growth summer. The main

objective of the investigation referred to the

evaluation of the health condition of the piscicultural

populations under analysis, evidenced by the most

representative bodily indices and coefficients

expressing the fish-breading maintenance, followed

by the statistical processing of the results obtained.

Thus, for each parameter in part, there were

calculated mean error and standard deviation,

median, mode, sample variance, range, mean

confidence level (95%), as well as mean variation

and precision coefficient.

The analysis performed evidenced a

harmonious development of the investigated

populations, which showed good maintenance

condition, in close correlation with the main physicochemical parameters of the growing media: water

temperature, amount of oxygen dissolved in the

water and water pH.

On the basis of the values of the investigated

parameters, we may conclude that individuals of

Aristichthys nobilis species evidence the most

pronounced corpulence, comparatively with the ones

of Hypophthalmichthys molitrix in the first two

stages of development and, at the same time, the best

physiological condition starting with the second

summer of growth up to the last stage of

development under investigation.

Keywords:

bighead carp, silver carp, profile index, Kiselev and fleshy index, Fulton coefficient.

Code [ID]:

SCSB20112002V20S01A0011 [0003728]


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