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There was also considerable polymorphism among the different genotypes of one same species.The genetic distance between cultivated peanut and several species including A.duranensis,A.villosa and A.batizocoi belonging to section Arachis was relatively more close in the comparison with some other species which was in accordance with peanut classification system.

栽培种花生与花生区组材料的亲缘关系相对较近，与花生属的植物学分类一致，其中A基因组的A.duranensis和A.villosa及B基因组的A.bati-zocoi与栽培种花生的亲缘关系更近一些。

There are 13 genera 21 species of terricolous arethusa, 10 genera 20 species of adnascent arethusa and 17 genera 29 species of rare and endangered in the area.

根据野外调查和文献考证，潮汕地区野生分布的兰科植物计有23属，41种。

The arthropod community in the tobacco field in the mountain area of western Henan province consisted of 68 species in 1998, 58 species in 1999 and 69 species in 2000, respectively.

对豫西山区烟田田间系统调查发现，1998，1999和2000年该地区烟田的田间节肢动物群落分别有68，58和69种组成。

Benthic species have been identified, among which Mollusca and Arthropoda are dominant socials. As a fauna nature, the eurythermous-eurytopic species and the subtropical species predomi-nate absolutely over the others.

初步鉴定，物种共有97种，以软体动物和节肢动物占优势，同时，生态类群以我国沿海广温广布性种和亚热带种占绝对优势。

According to the avifauna, palaearctic and cosmopolitan species were 48, 26, which accounted for 64.86%, 35.14% respectively. The palaearctic species were the most, and Oriental species were not founded.

根据鸟类区系划分，古北种鸟类48种，占64.86%，广布种26种，占35.14%，未发现东洋种，古北种占绝对优势。

The bark beetle species on Pinus armandi and their niches were studied in the middle areas of Qinling Mountains. The results showed that 19 species of bark beetles infecting and damaging Pinus armandi in pine ecosystem of Qinling Mountains were found, but only 11 species of them could be competitive and coexistent one another.

通过对秦岭林区海拔1600-2200m的中山地带华山松小蠹虫种类和生态位的研究，结果表明：在秦岭林区入侵危害寄主华山松的小蠹虫有19种，其中能构成竞争和共存的小蠹虫主要有11种。

A lot of brachiopod and mollusk fossils,including 12 species of 8 genera of brachiopod,14 species of 8 genera of bivalve and 5 species of 4 genera of gasteropod,are collected from the marl and mudstone situated on the bottom of Benxi Formation in Liujiang basin.The mollusk fossils are directly preserved in the upper part or facies change bed of brachiopod fossil bed.Up to now, the materials is firstly reported,especially the mollusk.

柳江盆地本溪组底部泥灰岩及相邻泥岩中产有丰富的腕足动物、软体动物化石，经鉴定有腕足动物10属12种，双壳类8属14种和腹足类4属5种，软体动物保存于含腕足动物层的相变岩层或直接位于其上层，到目前为止，这一丰富材料尚属首次综合报道。

Through the studies from more than 200 stand plots with different stand conditions in Qu County, Changshan County and Longyou County of Zhejiang Province, 16 predominant species groups from insect community were selected, and the canonical correlation coefficient between the diversity index, species number, individual number of predominant species and the stand factors was analyzed.

本文通过对马尾松林松毛虫天敌昆虫群落优势种的选择及功能表述、用典型相关分析选择关键林分因子进行林地分类，研究了表示天敌昆虫群落对松毛虫控制作用的途径。

About 20 species: Asia, one species in Central and North America; nine species in China.

大约20种：亚洲，中美洲和北美洲的种；中国有9种(5特有种)。

There are 17 species in 3 families of chiropteran distributed in Beijing. Most species are Palaearctic type, contain 11 species, including 64.8%.

北京地区翼手类共有3科17种；其中绝大多数为古北型，有11种，占68.75%，此外，有4种季风型、1种南中国型、1种东洋型。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。