ISSN:
1573-5117
Keywords:
Lake Kivu
;
Pisces Cyprinidae
;
age and growth
;
scale reading
;
von Bertalanffy equation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract The age and growth of the Cyprinid fish Barilius moorii from Lake Kivu is studied by means of the growth rings occurring in the scales. Although the moment of ring formation and the duration of one growth season were not known, both overall length growth in a population as well as individual length growth could be calculated. Increase of weight was obtained from length growth on the basis of a length-weight relationship. By comparing the growth parameters of the von Bertallanfy equation and data from the literature, a hypothesis is formulated that ring formation should occur at the transition from a dry to a rainy season, and that two rings a year should be formed. Ring formation on the scales might be due to gonad maturation, but this could not be demonstrated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00014875
Permalink