Rice medium was used to identify the species groups of genus of Fusarium fungi selected by Komada or No. 1 selective culture medium from soil.
选择镰刀菌用驹田或植选1号培养基，在米饭培养基上划分镰刀菌种群，用试管法或盆栽作致病性测定，以检测土壤中棉花枯萎病致病菌。
The holistic distribution characteristics of 4 species groups: evergreen vs. deciduous and tree vs. shrub species along the altitudinal gradient were then analyzed.
然后分别统计常绿或落叶的乔木或灌木4组物种沿具体海拔高度的整体分布特征。
Enlighted by the mutual contacts between the nature species groups, the paper proposes the inter-group competition and collaboration of genetic algorithms to solve the traveling salesman problem.
受自然界物种群体间相互联系的启发，提出了群体间竞争与协作的遗传算法来解决旅行商问题。
Some groups that had descended from the same parent population were no longer reproductively compatible—they had evolved into separate species.
一些由同一亲本群体进化而来的群体在繁殖上不再相容——他们进化成了不同的物种。
The new study found that 70 percent of rodent and primate groups have species with an appendix.
这项新的研究发现，70%的啮齿动物和灵长类动物的物种具有阑尾。
Humans, as we know, have always lived in groups; without this arrangement, our species would have died out long ago.
我们知道，人类一直是群居的；如果没有这种安排，我们的物种很早之前就灭绝了。
There are at least 10 species Paleontology fossils, members of Mammuthus-Coelodonta groups in late Pleistocene in northeast of China.
动物化石可鉴定的有10个种属，均属于中国东北更新世晚期猛犸象—披毛犀动物群成员。
Groups of closely related species belong to the same genus, which in turn are clustered into families, then orders, then classes, then phyla, and finally into kingdoms (such as the animal kingdom).
亲缘关系相近的种被归入相同的属，然后很多属被归入到科，然后是目、纲、门，最后归入界(例如动物界)。
It is thought that the human brain grew so large, and our species became so clever, as our social groups expanded.
人类大脑成长到如此之大，我们的物种变得如此聪明，这都是因为我们的社交组织得到了扩展。
Not surprisingly, groups of birds that nest in the canopy of trees declined significantly, while species that nest in cavities or near the ground were affected far less.
这并不奇怪，在树冠筑巢的鸟类种群的成员数量大幅下降，而在树洞或接近地面处筑巢的鸟类受的影响则小得多。
One is that a species splits into groups that adapt to different foodstuffs.
其中之一便是某物种由于对不同食物的适应性而被划分成不同的群体。
Between 2000 and 2011 the number of species assessed by the IUCN grew by over 60%. This goes part way towards explaining why some groups now appear strikingly more endangered than before.
2000 - 2011年间，被IUCN评估的品种增加了60%，这能部分地解释了一些生物群体比以往更加处于危险的境地。
The International Whaling Commission's scientific committee and other groups estimated in 2006 that 20, 000 to 30, 000 members of the species are in waters between Greenland and Iceland.
2006年，国际捕鲸委员会科学委员会和其它组织估计，在格陵兰岛和冰岛之间的水域有20,000至30,000头长须鲸。
Some environmental groups are criticizing Australia for its poor record on caring for endangered species.
一些环保机构对澳大利亚在保护濒危物种方面的不良记录进行了指责。
To investigate the motivations of both species, the researchers chose a task that both groups would willingly undertake: pulling a rope to get a food reward.
为了研究两种物种的动机，研究者挑选了双方都乐于接受的任务：拉绳奖食物。
There are hundreds of different species of eel, all of which can be roughly divided into two groups according to their habitat: saltwater and freshwater.
鳗鱼的种类有数百种，根据其栖息地大致可以分为两类：咸水鳗鱼和淡水鳗鱼。
For example, groups of baboons that usually live apart as apparently separate species sometimes aggregate and interbreed, muddying their classification.
比如说，成群的狒狒通常分开居住，很明显被看作独居物种，但是有时他们会聚集和杂交，这样一来他们的分类就很模糊了。
Socially, only four of the 15 species are known to form groups that last for more than a year.
在群居方面，已知15个种群中只有4个种群形成延续超过一年以上的群体。
For the study, Pollard and colleague Daniel Blumstein examined eight different species of rodents that live in social groups of different sizes and complexities.
在研究中，珀拉德和他的同事丹尼尔·布鲁姆斯坦(Daneil Blumstein)检视了八种不同种类的啮齿动物，它们生活的社会群体的大小和复杂程度各异。
Whereas many estimates about zooplankton had been based on biomass or functional groups, she has been trying "to put species back in the equation," she says.
鉴于许多对浮游生物物种分类的估计是基于生物量。
But the new study found that 70 percent of rodent and primate groups have species with an appendix.
但是，这项新的研究发现，70%的啮齿动物和灵长目动物的物种具有阑尾。
In other words, entirely new forms of life that did not survive or lead to other groups or species.
也就是说，这些崭新形式的生命体没有适应残酷的环境或是进化成其他门类的物种。
As they reveal in Naturwissenschaften, Dr Beare and his colleagues found that populations of all age groups of all three species declined steadily between 1928 and 1939.
贝尔博士和同事在《自然科学》杂志上透露了他们的发现：1928年至1939年间，三种鱼在每个年龄段的数目均平稳下滑。
The approach accurately predicted the number of species in several well-studied groups such as mammals, fishes and birds, providing confidence in the method.
我们用这种方法精确推算了几个已经被充分研究的类群，例如哺乳动物、鱼类和鸟类，来证明这个方法的可信度。
That was when the last globally significant extinction of Marine species took place, when 50% of some groups of deep-sea animals were wiped out.
那时就发生了最近的一次海洋生物全球性大灭绝，在一些地方，有50%的深海动物灭绝了。
That was when the last globally significant extinction of Marine species took place, when 50% of some groups of deep-sea animals were wiped out.
那时就发生了最近的一次海洋生物全球性大灭绝，在一些地方，有50%的深海动物灭绝了。
应用推荐