Environment factors influencing the natural breeding of captive crested ibis 環境因子對籠養朱?自然繁殖的影響
Determination of the standard oxygen consumption of the crested ibis nipponia nippon 人工飼養朱?耗氧量的測定
Organic food industry and its environment estimating system in crested ibis nature reserve 朱?自然保護區有機農產品產業形成與環境評價體系
The giant panda and the crested ibis are flag species of the rare endangered mammals and birds respectively in the world 大熊貓和朱?是世界瀕危野生獸類及鳥類的旗艦物種。
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。