نتایج جستجو برای: percentage of larval mortality
تعداد نتایج: 21196739 فیلتر نتایج به سال:
Carp eggs were exposed immediately after fertilization to Cu concentrations of 0.3 and 0,8 (xmol/L at water pH 7.6 or pH 6.3. Mortality, the incidence of spina! cord deformation, heart rate, tail movements, hatching success, and whole-body content of K, Na, Mg, Ca, and Cu were determined over time. Light microscopical preparations of eggs (48 h after fertilization) and larvae (168 h after ferti...
Carp eggs were exposed immediately after fertilization to Cu concentrations of 0.3 and 0,8 (xmol/L at water pH 7.6 or pH 6.3. Mortality, the incidence of spina! cord deformation, heart rate, tail movements, hatching success, and whole-body content of K, Na, Mg, Ca, and Cu were determined over time. Light microscopical preparations of eggs (48 h after fertilization) and larvae (168 h after ferti...
Carp eggs were exposed immediately after fertilization to Cu concentrations of 0.3 and 0,8 (xmol/L at water pH 7.6 or pH 6.3. Mortality, the incidence of spina! cord deformation, heart rate, tail movements, hatching success, and whole-body content of K, Na, Mg, Ca, and Cu were determined over time. Light microscopical preparations of eggs (48 h after fertilization) and larvae (168 h after ferti...
Carp eggs were exposed immediately after fertilization to Cu concentrations of 0.3 and 0,8 (xmol/L at water pH 7.6 or pH 6.3. Mortality, the incidence of spina! cord deformation, heart rate, tail movements, hatching success, and whole-body content of K, Na, Mg, Ca, and Cu were determined over time. Light microscopical preparations of eggs (48 h after fertilization) and larvae (168 h after ferti...
Carp eggs were exposed immediately after fertilization to Cu concentrations of 0.3 and 0,8 (xmol/L at water pH 7.6 or pH 6.3. Mortality, the incidence of spina! cord deformation, heart rate, tail movements, hatching success, and whole-body content of K, Na, Mg, Ca, and Cu were determined over time. Light microscopical preparations of eggs (48 h after fertilization) and larvae (168 h after ferti...
The aim of this study was to assess the effect of different light intensities and photoperiods on growth, survival, and the yolk sac absorb of the Persian sturgeon, Acipenser persicus, larvae. Larvae were reared from hatching to yolk sac absorb (eight days) at four light intensities (0, 50, 150 and 300 lux) and three photoperiods (00L:24D, 12L:12D and 24L:00D) which consisted of seven treatment...
ABSTRACT An ecological study was conducted to examine the relation between infant morality rate (IMR) and under 5 mortality rate (UFMR) with GNP in 1993 and 1996. The data of 145 countries were collected from WHO and UNICEF reports and we analyzed them using statistical model. First a picture of infant mortality rate and GNP was described in 7 groups of different countries with respect to WH...
In this study the effect of different protein levels on reproductive performance of Channa striatus was conducted. Snakehead juveniles (65.5±0.2 g) were randomly distributed into nine homogenous groups of 75 fish each. Three isocaloric experimental diets differing in protein levels were prepared. The experiment lasted for 8 months and gonadosomatic index, absolute fecundity, egg diameter, numbe...
Carp eggs were exposed immediately after fertilization to Cu concentrations of 0.3 and 0,8 (xmol/L at water pH 7.6 or pH 6.3. Mortality, the incidence of spina! cord deformation, heart rate, tail movements, hatching success, and whole-body content of K, Na, Mg, Ca, and Cu were determined over time. Light microscopical preparations of eggs (48 h after fertilization) and larvae (168 h after ferti...
Carp eggs were exposed immediately after fertilization to Cu concentrations of 0.3 and 0,8 (xmol/L at water pH 7.6 or pH 6.3. Mortality, the incidence of spina! cord deformation, heart rate, tail movements, hatching success, and whole-body content of K, Na, Mg, Ca, and Cu were determined over time. Light microscopical preparations of eggs (48 h after fertilization) and larvae (168 h after ferti...
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