Premium
On the pattern of correlation between the fecundity, length, weight and age of pikeperch Stizostedion lucioperca
Author(s) -
ŽIvkov M.,
Petrova G.
Publication year - 1993
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.1095-8649.1993.tb00421.x
Subject(s) - fecundity , biology , stizostedion , fish <actinopterygii> , zoology , ecology , gonadosomatic index , fishery , population , demography , sociology
Great diversity was found in the correlation between absolute fecundity ( F ) and the length ( L ) and age (t) of pikeperch, Stizostedion lucioperca (L.) in 10 water bodies that differed in their geography, morphology, and ecology. However, this diversity is only apparent, and the Flt(L) relationships are logistic, with the linear, power, exponential and logarithmic functions found in different populations, representing segments of the sigmoid curve. The expected linear relationship between fecundity and weight was found for the fish in seven water bodies, but it was curvilinear in three others. In the latter waters, pikeperch matured at a comparatively young age, with shorter length, and lighter weight, yet their initial fecundity was comparatively lower.