Forum pracy nad projektem wskrzeszenia The Forge

[02fdd68lv]

Bostrichthys sinensis fecundity of the individual


Complex and separate itself from a target view, may be closely related with the individual fecundity, but after the song was selected regression equation states ■ Shí ~ ix iv solid account of Zhanjiang Ocean University ∞ 12 Volume 22 indicators basically replace it role, it does not have a greater role. Such as from the individual absolute fecundity and the regression equation for the index, weight and ovary weight Bostrichthys sinensis reflect the individual absolute fecundity of the important indicators, instead of body length, age and other indicators of effect. When not consider ovarian weight, the selected regression equations of individual absolute fecundity and maturity index is the weight coefficient, mature Bostrichthys sinensis coefficient and the correlation between individual absolute fecundity is not significant, but the mature ovary and shell coefficient weight are related, that individual absolute fecundity increases with body weight, when the weight is constant, the greater the maturity coefficient, the greater the individual absolute fecundity. Therefore, individual analysis of the relationship between fecundity and biological indicators, in addition to the individual to consider the relationship between fecundity and the single indicator, the multiple regression analysis, indicating the essential relationship between them is necessary. Individual fecundity fecundity as an important indicator of population, mainly by the kinds of genetic decision, but also by environmental factors. Individual relative fecundity of different sizes can be used to compare different species or different species of fish reproduction,[link widoczny dla zalogowanych], it reflects the reproductive strategy of fish. Bostrichthys sinensis the individual relative fecundity was 155.6 ~ 482.7,[link widoczny dla zalogowanych], different, an average of 292.9, g, and the tiger fish suborder belong Gu Q wave with a fish Boleophthalmus (individual relative fecundity was 511.0 ~ 804.9 tg,[link widoczny dla zalogowanych], an average of 752t ~ tg) output after the adhesion of wall, there to protect the eggs act 0. planktonic larvae camp life,[link widoczny dla zalogowanych], 35d of the juvenile immediately transition to life in the cave. these special adaptation of the reproductive ecology of the lower fecundity Bostrichthys sinensis , is increasing its recruitment of a population to adapt, for improving the population, stable population structure is significant. egg diameter frequency distribution of spawning fish commonly used to determine the type of eggs Bostrichthys sinensis general egg diameter size can be divided into two groups, although the simultaneous development of a fundamentally large egg diameter as the main group, but they can not infer a one-time Bostrichthys sinensis spawning type. Xiaodong Jiang and other Chinese Black Sleeper reported each spawning is about 500 times the end t; He Huicheng 3 years OT 638 Bostrichthys sinensis broodstock groups (tail weight 200g and above), about 268 eggs, was 1.61 million eggs, with an average of about 6000 eggs per tail _5; Lee Foon Italy oxytocin oxytocin batches of different broodstock (tail weight 140 ~ 200g), fecundity is 8,000 ~ 10,000 / tail. Bostrichthys sinensis result of artificial spawning in this study (body weight more than 150g individual absolute fecundity is 25,[link widoczny dla zalogowanych],000 or more) compared to the end of eggs in each individual absolute fecundity of 50% or less, this may be insufficient broodstock gonad maturity, it may be the result of spawning batches. On the Chinese Ukraine Sleeper spawning type of problem, remains to be further study.
More articles related to topics：


Wholesale MAC Cosmetics Audi A7

MBT Cipő How to Lower Cholesterol Level, Reduce Ch

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]