There are as well as density-dependent biological factors such as disease, predation, and intraspecific competition . 还有密度制约的生物因素，诸如病害、捕食和种内竞争等。
2.
The two authors concluded that these intraspecific differences can be greater than those among the calciphytes and oxylophytes . 这二位作者得出结论说，这些种内的差别能比喜钙植物和喜酸植物之间的差别大。
3.
Study on intraspecific hybrid of tenebrio molitor l 黄粉虫种内杂交初步研究
4.
The intraspecific difference of the triose phosphate isomerase gene from giardia lamblia 蓝氏贾第鞭毛虫磷酸丙糖异构酶基因种内差异研究
5.
On intraspecific polymorphism in pollen morphology of caragana microphylla lam . and its two affinities 小叶锦鸡儿及其两个近缘种花粉形态种内多态性研究
6.
Through comparison and alignment on the sequences , 47 haplotypes are chosen and involved in analysis . 4 . the purposes of this research are phylogeny of intrafamily ( including intraspecific , interspecific , intergeneritic and intersubfamily ) 经排序和对比分析，能够用于分子系统学分析的单倍型序列有47条，这些单倍型全部参加了分析。
7.
Laoyingdi population , baoshan population , yimen population , yupingshan population and shuangbai population . in addition , hierarchical relationships of populations were studied . put together , there are obvious intraspecific differentiations in lilium sulphureum baker apud hook 综合上还研究认为，淡黄花百合存在明显的种内分化，不同的选择压力和兼性无融合生殖与该种植物的遗传多样性、适应和进化有密切关系。
8.
We synthetically discussed intraspecific differentiation and evolution , from four biotic levels of population , individual , cell and gene . intraspecific differentiations in morphology were investigated firstly . the results indicated that there are varied polymorphsim within populations , and obvious polytypism among populations 本文在形态分类的基础上，根据居群生物学的原理和方法，对淡黄花百合的形态学、细胞学、分子生物学进行了研究，从居群、个体、细胞和基因四个层次综合探讨了该种植物的种内分化与进化。
9.
As analyzed , ( 1 ) the rapd technique is highly sensitive to investigating genetic diversity in t . lepturus and e . muticus . t . lepturus exhibits lower polymorphism and genetic diversity than e . muticus ; ( 2 ) according to the analysis of the partial mitochondrial 16s rrna gene sequences , a very low intraspecific variation and considerably high divergence among species were found , which reveals a dual nature of conservatism and variability in mitochondrial 16s rrna gene ; ( 3 ) five primers generate the species - speeific rapd sites and these sites can be served as the molecular markers for species identification and ( 4 ) it can be proved at dna variation level that t . lepturus and e . muticus are of two species respectively pertainiag to different genera , which supported the nelson taxonomic conclusion 分析结果表明: ( 1 ) rapd技术研究黄海带鱼和小带鱼的遗传多样性具有较高的灵敏度和检出率，带鱼的多态比例和遗传多态度均较小带鱼的低; ( 2 )线粒体165出凶a基因序列在分析两物种遗传变异时表现出保守和变异的双重特性，种内变异极小而种间较大: ( 3 ) 5个随机引物扩增出种特异的ra卫d带，可作为种间分子鉴定标记; ( 4 )研究证实带鱼和小带鱼是不同属的两个种，从而在分子水平上支持了nelson分类系统的观点。
