Growth over the span of an oyster's life was found to exhibit allometric growth, followed by isometric growth
, with a reversion back to allometric growth in later years (Libini et al.
The L-W relationship shows an isometric growth
when b = 3.
Values obtained from b tended to an isometric growth
for both species during the experiment (Table 2), considering that isometric growing species are the ones that fluctuate within the values b = 2.
equation KF = (W/L3) x 100 of Lagler (1966) was used to calculate the condition factor (CF).
The slope of the length-weight regression was close to the isometric growth
value of 3.
Where was the derived weight of shrimps (g), L was the standard length (cm), coefficient a was the intercept in the axis and the regression coefficient b was an exponent indicating isometric growth
when close to 3.
We suspect that there is an isometric growth
phase between the end of pregnancy and the early stages of life, which likely continues for a short time after birth, then reaching and staying in negative allometric growth for the remainder of the development.
In this study, growth of fish showed positive allometry as t-test for departure from 3 which is the value of isometric growth
showed significant difference.
Of all the recorded morphometric characters, only six presented isometric growth
as a function of total length during the early stages of development (Table 1).
Females exhibited a negative allometric growth pattern for HL but presented isometric growth
for HW and HH.
Growth rates of fish responded rapidly to the absence or reintroduction of food, whereas body composition (% wet weight) remained relatively stable owing to isometric growth
in fed fish and little loss of body constituents in fasted fish, resulting in nonsignificant differences in body composition among feeding treatments.
Only Costa, Andrade, Vidal Junior and Souza (2005) observed isometric growth