Less visible breeding areas hold nest sites for black crowned and yellow crowned night herons , great blue heron , great and snowy egret , glossy ibis and barn owl 黑冠和黃冠夜鷺、藍鷺、大白鷺、雪鷺、朱鷺和貓頭鷹的很難見到他們的巢,在這里是可以看到的。
First of all , this paper introduces the whole design of the mobile platform and interrelated knowledge about system analyse , simulation and the ibis model 論文首先介紹了關于系統分析、模擬仿真以及ibis模型的一些相關知識及移動平臺系統的總體設計方案。
From 1999 to 2002 , a bird investigation was conducted in the distribution area of the crested ibis , yangxian , shaanxi province . totally 201 species were recorded , belonging to 16 orders , 48 families and 116 genus 摘要1999年1月至2002年1月,在陜西省洋縣進行朱?研究過程中,對當地鳥類進行了長期、系統的觀察,記錄到鳥類16目48科116屬,共201種。
Some recombinant proteins agreeing with those expected were obtained , including the ngf , nt - 4 and gdnf of giant panda , bdnf and gdnf of crested ibis . the expressed fusion proteins were verified with sds - page , gst activity and western blotting 利用sds page 、 gst酶活性及western雜交等技術初步證明了所獲得的重組表達蛋白為gdnf基因和nts基因家族各成員之編碼蛋白。
The research will predic atively heighten the therapy level for the suffering individuals in captive populations of both the giant panda and crested ibis , and possess great theoretical and practical significances on enhancing the living status of the endangered animals 這對于促進大熊貓和朱?圈養種群之現有疾病治療體系層次的提高,改善種群現有的健康狀況,具有重要的理論意義和實用價值。
That means genetic diversity in crested ibises can be sustained , and on the base the populations " adaptive capacity and evolutionary potential should be promoted . in this way , the rare bird will be protected more successfully 根據譜系而在繁殖酉己付時盡可能地避免近交,將增進個體間的基因交流,使種群的遺傳多樣性得以維持,并有可能提高其生存能力與進化潛力,最終達到更好地保護這一稀世珍禽的目的。
Crested ibis ( nipponia nippori ) , a kind of peculiar wading bird in east asians facing its extinction because of humanbeings " economic activities . seven crested ibises found at yong county shaanxi province in 1981 were the all wild individuals left in the world then . to protect this rare bird , scholars have carried out a great deal of researches on it in many areas . however , till now , studies is mainly confined to some areas such as ecology and morphology , little was done in the area of molecular biology . phenomina such as disable individuals increasing and adults " producing ability decreasing occurred more frequent in recent years . these badly affected the existence and development of this species . so , getting the information about crested ibis " gene and genetic diversity through studies at molecular level and setting up scientific producing and protecting projections are becoming urgent tasks 為保護這?瀕危鳥類,我國學者對朱?展開了多方位的研究。然而迄今為止,這些研究主要限于生態學、形態學等方面,分子生物學領域則很少涉及。近年來朱?種群頻繁出現諸如殘疾幼鳥增多、成鳥繁殖力下降等問題,已嚴重影響到種群的生存與發展,因此,從分子水平對朱?進行研究,了解其基因信息和遺傳多樣性,并確定個體之間的親緣關系,從而制定科學、合理的繁殖計劃與保護對策,已成為當務之急。
Similarity coefficient and genetic distances between two arbitrary individuals were caculated according to the data of experiments , the pedigree was constructed by two means ( they were upgma and parsimony ) , and genetic diversity was discussedbased on selecting the best conditions of pcr with opg and opa primers from operon company , we obtained 163 bands using 24 random primers . in other words , 163 sites in crested ibis " genome were detected . the bands from 23 primers showed polymorphism . minimurn of polymorphic ratio was 0 , maximum was 85 . 71 % , and average was 48 . 99 % . in the population which was composed by 37 individuals , most of genetic distances between two arbitrary individuals were less than 0 . 1 . the results showed that the degree of similarity among crested ibises was high while genetic diversity in the population was low accordingly 我們在對operon公司opg系列和opa系列引物進行優化篩選的基礎上,用24條隨機引物共擴增出163條譜帶,即檢測了朱?基因組中的163個位點,其中23條引物的擴增結果具有多態性;譜帶的多態比率最小為0 ,最大為85 . 71 ,平均為48 . 99 ;在由37只朱?組成的種群中,任意兩個個體之間的遺傳距離絕大多數在0 . 1以下。這些結果表明,目前朱?個體間的相似程度很高,種群的遺傳多樣性水平較低。
In the meantime , congenital amblyopia resulted from optic nerve lesion was observed in the crested ibis , with an incidence rate of 3 - 5 % . since the epilepsy and congenital amblyopia are both hereditary , it is feasible to perform genetic engineering studies on the correlative genes , which could protect neurons from the damages of excitation toxin and vision sickness , in order to cure the diseases at gene level 由于癲癇和視神經病變類疾病均屬于遺傳性疾病,因此,利用分子生物學技術,對因癲癇和遺傳性弱視癥導致的神經元損傷具有保護及再生作用,以及視神經通路的發育、分化和受損視覺通路具有修復作用的相關基因,開展克隆、表達和活性鑒定之研究,將為通過基因工程技術實現其疾病治療之目標奠定基礎。