这会影响它们的神经系统和繁殖幼鸟的能力，并可能导致肾衰竭和死亡。
This affects their nervous systems and ability to produce baby birds, and can lead to kidney failures and death.
这是因为那些非对称分个所得子细胞中的弱者有可能在繁殖之前就死亡，这样就浪费了他们所吸收的食物。
That was because the runts tended to die before they could reproduce, thus wasting the food that they had already eaten.
这些真菌尽可能的将蚊子死亡的过程控制得很缓慢，以达到释放出尽可能多的营养物质，这样就可以繁殖更多的真菌孢子。 “来自玛丽兰大学的昆虫学家RaymondSt. Leger这样说。
"They want to kill slowly, extracting as many nutrients as possible so they can produce more spores, " says Raymond St. Leger, an entomologist at the University of Maryland, College Park.
当一种动物不能在每一代都繁殖出足够的后代而与其死亡率保持一致时，它就会逐渐灭绝了。
An animal species becomes extinct when it fails to produce enough young in each generation to keep pace with the death-rate.
如果没有死亡，你也就抛掉了出生的需要：事实上，如果你不断地繁殖生育，最终就必须要使老年人死亡，为新生儿留出生存的空间。
Do away with death and you do away with the need for birth: in fact if you went on breeding, you would finally have to kill old people to make room for young ones.
有害藻类大量繁殖是鱼类死亡的常见原因。
世界上最后一只雄性的纯种哥伦比亚盆地侏儒兔最近不幸死亡。这致使美国在实施一个旨在试图拯救这种濒危物种免于灭绝的圈养繁殖计划的过程中，仅有两只纯种的雌性侏儒兔尚存。
The last male purebred Columbia Basin pygmy rabbit has died, leaving just two females in a captive breeding program created to try to save the endangered species from extinction.
大部分是被雨水冲走，沉积在当地河道并在那里溶解成营养素，这种营养素能引起当地藻类大量繁殖并造成鱼类死亡。
Much is washed off by rain, ending up in local watercourses where dissolved nutrients can cause algal blooms and kill fish.
这些幸存者均由2只雄虎和4只雌虎繁衍而来，繁殖能力明显减退，并且由于近亲繁殖其幼虎死亡率也超出平均水平。
These survivors are all the progeny of just two males and four females, and display the lowered fertility and above-average infant mortality that goes with inbreeding.
换句话说，大自然是通过让大部分死亡的生存竞争——“血红的爪和牙”来决定生存和繁殖的优势。
In other words, nature tests its creations by killing most of them quickly-the battle "red in tooth and claw" that determines reproductive advantage.
在适当的条件下，它会大量繁殖，井使被感染的生物体表现出病症甚至死亡。
Under suitable conditions, it will multiply, and the Wells will cause infected organisms to exhibit disease and even death.
一些病菌生活在组织内并迅速繁殖从而导致组织死亡。其它病菌产生毒素把组织杀死。
Some germs live in the tissue and multiply so rapidly that the tissue dies. Others produce toxins that kill tissue.
滞水只能繁殖死亡。
他的新陈代谢过程减缓，更有可能在繁殖之前死亡。
It is slower to metabolise and likelier to die before it has reproduced.
大熊猫自然繁殖的比率很低限制了种群的快速恢复，来自非法猎取，产地损失，还有其他人为因素影响死亡率。
The giant pandas' naturally slow breeding rate prevents a population from recovering quickly from illegal hunting, habitat loss, and other human-related causes of mortality.
那次鱼死亡是由一种有害的绿藻引起的，一种所谓的微观生物繁殖造成的赤潮。
It was caused by a harmful algae bloom, a so-called red tide of microscopic organisms that spread from time to time.
有害藻类的大量繁殖是导致鱼类死亡的常见原因。如果一些动物食用了神经毒素中毒的鱼类，软骨藻酸也会导致这些动物神经系统紊乱甚至死亡。
Harmful algae blooms are a common cause of fish kills. Domoic acid can also cause neurological disorders and death in animals that eat fish poisoned with the neurotoxin.
行为规则包括游动规则、觅食规则、繁殖规则、死亡规则。
The behavior rules include swimming rules, feeding rules, reproduction rules and death rules.
史陶表示，这些激增的养分足以造就生物的疯狂大繁殖，最后以「黑色死亡」告终。
According to dr. stow these nutrient surges can engender "a biological orgy" of frenzied reproduction that ultimately ends in "black death. "
种群的死亡过程和繁殖过程使种群平均密度有较明显的波动，但对种群总体水平无明显影响，种群结构也无明显变化。
The death and reproduction of the population make the mean density fluctuate but do not obviously change the overall level of population number and the population structure.
报道了闽江口海域鳓鱼的生殖群体结构、生长特性、死亡参数和繁殖、摄食习性等生态学资料。
The structure of reproductive stock, the growth character the mortality parameter and breeding, feeding habits of Chinese herring in the estuary of Mingjang River are reported in this paper.
鸟类会吃被毒死的昆虫或者喝污染了的水。这样会导致鸟类的死亡，即便不会不会导致鸟类的立刻死亡，也会影响鸟类的繁殖。
Birds that eat the poisoned insects or drink contaminated water can die as a result, and even if pesticides do not kill birds outright, they can prevent them from reproducing successfully.
鸟类会吃被毒死的昆虫或者喝污染了的水。这样会导致鸟类的死亡，即便不会不会导致鸟类的立刻死亡，也会影响鸟类的繁殖。
Birds that eat the poisoned insects or drink contaminated water can die as a result and even if pesticides do not kill birds outright they can prevent them from reproducing successfully.
种群的数量季节消长主要是繁殖和死亡两因素相互作用的结果。
Reproduction and mortality are two primary factors to affect population quantity dynamic.
因细菌、病菌一般生命周期很短，不能繁殖的细菌、病毒就会迅速死亡。
Due to bacteria, virus life cycle is very short in general, can not breed bacteria, viruses will be rapidly killed.
就这样，病毒一代代地复制、繁殖，免疫细胞不断死亡。
In this way, the virus generation to generation copy, reproduction, the immune cells died.
大熊猫自然繁殖的比率很低限制了种群的快速恢复，来自非法猎取，产地损失，还有其他人为因素影响死亡率。
The giant pandas ' naturally slow breeding rate prevents a population from recovering quickly from illegal hunting, habitat loss, and other human - related causes of mortality.
大熊猫自然繁殖的比率很低限制了种群的快速恢复，来自非法猎取，产地损失，还有其他人为因素影响死亡率。
The giant pandas ' naturally slow breeding rate prevents a population from recovering quickly from illegal hunting, habitat loss, and other human - related causes of mortality.
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