Research during the past 10 years indicate that some diatom species particularly in high concentrations induced inhibitory effects on egg fecundity and hatching rate of copepods.
大量的室内实验发现 :关键营养物缺乏使桡足类产卵率降低 ,对于硅藻细胞化学组成的分析表明这种物质可能是某些不饱和脂肪酸。
This article focus on the impact of the channel catfish Ictalurus punctatus spawning rate caused by the stocking density, the spawner weight, the water depth of spawning pond, the sediment thickness and the artificial propagation.
本文采用自然产卵的方式研究了放养密度、亲鱼体重、产卵池水深、产卵池底泥厚度和人工催情对斑点叉尾鮰产卵率的影响。
The result indicated that alternating temperature warming method was in accordance with development rhythm of Antheraea pernyi,raises number of mature eggs and promotes the rate of laid eggs.
采用恒温和变温两种感温方式对柞蚕种茧进行暖茧 ,研究两种感温方式对柞蚕成虫的产出卵率及卵的普通孵化率的影响。
The Key Factors Studies on Natural Spawning Rate of Ictalurus punctatus
影响斑点叉尾亲鱼自然产卵率的关键因素研究
Feeding on pumpkin, the insect had the lowest survival rate and had no fecundity.
在南瓜上饲养，茄廿八星瓢虫幼虫及蛹存活率低，成虫丧失产卵能力。
During its whole life,the average oviposition rate of a female is 116.8. Leptopsylla segnis is hematophgous when it stings human with the bloodsucking rate 16.25%.
每只雌蚤终身产卵平均为116.8只。 该蚤能吸人血,吸血率为16.25％。
Effects of Culumus Cells and Culture Condition on Production Efficiency of Bovine in Vitro Fertilized Embryos;
卵丘细胞和培养条件对牛体外胚胎生产效率的影响
Effect of Wolbachia on the Number of Egg-laying and Mortality Rate of Immature Stages in Encarsia formosa
沃尔巴克氏体对丽蚜小蜂产卵量及成虫前死亡率的影响
Effects of Extracts from the Non-preferable Plants of Henosepilachna vigintiopunctata on Its Oviposition and Hatching Rate
非嗜食植物提取物对茄二十八星瓢虫产卵及孵化率的影响
apoor, good, etc layer
产卵少、 多...的鸡.
To lay or deposit eggs in.Used of certain insects.
昆虫产卵使某些昆虫产卵
To lay eggs, especially by means of an ovipositor.
产卵生蛋，尤指通过产卵器
Obesity, pre-diabetes and diabetes can affect ejaculation, sperm production, ovulation, miscarriage rates and increase fetal malformation rates.
肥胖、尿病前期和糖尿病都能影响射精、子产生、卵、产几率和增加胚胎发育不良的机会。
a member of the sex that produces ova or bears young.
产卵或产仔的个体.
The mating ratio and the number of oviposition of the adults under human feeding condition are correlative with both the size of the net room and the density of the butterflies.
在人工饲养条件下,成虫的交配率和产卵量与网室的大小和蝴蝶的密度有关.
Effects of Eggyolk Containing Cholecystokinin-antibody and Proglumide on Growth Performance,Nutrient Digestibility and Hormone of Growing Pigs
含CCK抗体卵黄粉和丙谷胺对生长猪生产性能、养分消化率和内分泌激素的影响
Effects of egg yolk containing cholecystokinin-antibody on growth performance and nutrient digestibility of weanling piglets
含胆囊收缩素抗体卵黄粉对断奶仔猪生产性能及养分消化率的影响
Producing eggs that hatch outside the body.
卵生的在亲体外产卵并发育和孵化的
Mosquitoes kill easily when incubating.
蚊子在产卵时易于消灭。
These insects deposit their eggs in the ground.
这些昆虫产卵于地下。
spawning stock biomass per recruit
单位补充产卵群生物量