The oxygen consumption rate(RO) and ammonia excretion rate(RN) of Miichthy miiuy juvenile decreased significantly as weight increased,and their relationships with weight could be represented by power equations RO=0.613 9W-0.403 1(R2=0.994 3) and RN=25.055W-0.287 7(R2=0.997 8) respectively.
Three main parameters values of SDA of juvenile Pseudosciaena crocea were calculated in different feeding levels((1.2)%,2.5% m/m)at 25±1℃SDA total energy consumed was 263.4 J/g and 467.7 J/g respectively;
Contents of the common nutritive composition were analyzed by national standard method in the muscle of small juvenile Schizothorax Prenanti ( average weight: 1.9±0.2g) , large juvenile fish (average weight: 72.4±7.3g) and adult fish ( average weight : 501.8± 35.5g ) , and so was the composition of fatty acids , amino acids .
The daily growth rate of larval fish at a temperture of 25℃ is about 0.2 mm during the first half month. The daily growth rate of the juvenile fish is about 1.0 mm, and that of the young fish about 1.5 mm.
And third, from small juvenile fish to adult fish the contents of UFA ranged were very little, but the contents of HUFA had evident variety, especially, there were notable difference between large juvenile fish and adult fish (P<0.05).
High genetic differentiation of both natural and "hatchery" juvenile fish was revealed.
Larvae of the second group had severe pathologies of inner organs that caused 100% mortality before the age of 15 days, but no pathomorphological changes in the organs of larvae and juvenile fish of the third group were revealed for up to 40 days.
taczanowskii is a polyphage (it more often eats amphipods, decapods, and juvenile fish).
Alteration of thermoregulation behavior in juvenile fish in relation to satiation level
Significant alterations of thermoregulation behavior appear in juvenile fish one day after food deprivation.
The test results are: (1) There are linear correlations between 24h LC50 and 48h LC50 of Zn2+ for Silver Carp fingerling and temperature.
1 included large (L), medium (M), and small (S) fingerling sizes from each of the control (C), selected upward (+) and selected downward (-) lines for body weight.
Fingerling rainbow trout (N=436) were trained in one trial with brief electric shock (2.0 V/cm) to suppress their spontaneous upstream swimming into a quiet well.
These morphological changes reflect a general decrease in activity and a shift from a sub-carangiform to a labriform mode of swimming following transition from the fingerling to adult stage of the life cycle.
Acute toxicities of selected herbicides to fingerling channel catfish,Ictalurus punctatus