Age and sex related studies on the chemical architecture of the tissues of the fresh water crab barytelphusa guerini 2. cations

Ambore, N.E.; Venkatachari, S.A.T.

Journal of Animal Morphology and Physiology 26(1-2): 132-143

1979


ISSN/ISBN: 0021-8804
Accession: 004687051

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Abstract
Quantitative estimations of the cations were made in the different tissues of the crab in relation to age and sex. K content was higher than Na; Ca content was higher than Mg. Na and K were more in muscle and gill, Ca was higher in gill and Mg in hepatopancreas. The total cationic content (m Eq/Kg. wt/wt) decreased in the order of gill, muscle, hepatopancreas and heart in males and in the order of muscle, gill, hepatopancreas and heart in females. Na nad K contents decreased with age, while Ca and Mg concentrations increased. The total cationic content increased with age in all the tissues, Na and K indices decreased with age and Ca index increased. Mg index showed different trends in relation to age, depending upon the type of tissue and sex, increased with size in muscle, gill and hepatopancreas of males and muscle of females, while it decreased with same in heart of males and gill, heart and hepatopancreas of females. Na and K contents of the different tissues were relatively higher in males. The Ca content was higher in muscle, gill and hepatopancreas of males and heart of females. The Mg content was higher in muscle, gill and hepatopancreas of females and heart of males. The total cationic content was higher in males. Na index was higher in males irrespective of age and tissue. K index was higher in muscle and gill of females, and heart of males and hepatopancreas was more or less equal. Ca index was more in muscle and gill of males and heart of females and hepatopancreas was more or less equal. Mg index was slightly more in heart of males and muscle, gill and hepatopancreas of females.