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1.
贵州盘县大洞更新世灵长类化石   总被引:2,自引:1,他引:1  
本文记述贵州盘县大洞中-晚更新世洞穴堆积中的猴类化石,数量不多,被归入短尾猴(Macacaarctoides),熊猴(M.cf.assamensis)和疣猴亚科(Colobinae)本研究为南方洞穴堆积单个灵长类牙齿的鉴定积累一些资料,同时也扩大了贵州省猴类化石的分布。  相似文献   

2.
白菜型油菜与蓝花子杂交的初步研究   总被引:6,自引:0,他引:6  
吴沿友  罗鹏   《广西植物》1998,18(1):54-57
通过胚胎培养,成功地获得了白菜型油菜(Brasicacampestris)与蓝花子(RaphanussativusLvarraphanistroidesMakino)的属间杂种。该杂种具有两种类型;一种为大花类型,一种为小花类型。对它们进行花粉母细胞减数分裂的观察结果表明:小花类型为未加倍的杂种MI,存在19个未配对染色体,大花类型为加倍或部分加倍杂种,加倍类型MI,19个二价体排列在赤道板上;部分加倍类型AI,具有10-10-9的染色体组分割现象。大花类型具有可育性;它能够产生很多n=19及n=9、n=10的正常配子。染色体组分割能够产生倍半二倍体,它能用来研究染色体的功能和开展染色体工程。  相似文献   

3.
在脉冲电泳(pulsed-field gel elctrophoresis,PFGE)研究中,经常使用的分子量标记有啤酒酵母(Saccharomyces cereveslae)和粟酒裂殖酵母(Schizosaccharomyces pombe)的染色体完整DNA。其中,啤酒酵母(如菌株YNN295)有16条染色体,分子量变化范围为0.25Mb~2.2Mb(McCluskeyelal,1990),适于作为小于2.2Mb的染色体DNA的分子量标记;粟酒裂殖酵母(如菌株972h-)有3条染色体,分子量…  相似文献   

4.
猕猴属6个种的rDNA变异及其系统进化关系   总被引:4,自引:0,他引:4  
王文  宿兵 《遗传学报》1996,23(5):343-350
以人28S,18S,rDNA为探针,用15种限制性内切酶构建了猕猴属6个种(M.mulatta,M.facsicularisfM.arctoides,M.assamensis.M.thibetana.M。nemestrina)和滇金丝猴Rhinopithecusbieti),白颊长臂猿(Hylobatesleucogenys)核糖体DNA重复单位的限制性内切酶图谱,红面猴(M.arctoies)与  相似文献   

5.
本文记叙了东濮地区井下奥陶纪牙形石16属32种(1新种、3未定种、4未定属种),识别出5个牙形石带,1个未建带,自下而上为1.Scolopodusflexilis带;2.Tangshanodustangshanensis带;3.未建带;4.Plectodinaonychodonta带;5.Aurilobodusserratus带;6.Microcoelodusasymmetricus-Belodinacompressa带。  相似文献   

6.
云南施甸志留纪上人和桥组笔石   总被引:3,自引:0,他引:3  
描述志留纪Sheinwoodian晚期笔石5属10种,其中Monograptus belophorus(Meneghini),M.antennu-larius(Meneghini)和Monoclimacis flumendosae(Gortani)在我国属首次报道,上人和桥组两个笔石带的层序被修正为Cyrtograptus rigidus带在上,而Monograptus flexilis带在下。  相似文献   

7.
本文报道了一种改进的阴茎电刺激采精法,用脱脂棉和铝箔作为电极,以避免直接用金属电极可能对阴茎的损伤,并运用这一方法对猕猴(Macaca mulatta)、藏酋猴(M.thibetana)和熊猴(M.assamensis)进行了电刺激采精及其精液特征研究。电刺激采精模式为连续刺激和间断刺激方式。在采精过程中没有发生阴茎损伤。对初次接受电刺激采精的动物以间断刺激模式效果较好。猕猴、藏酋猴和熊猴的射精体  相似文献   

8.
新疆南部莎车奇自拉夫组晚泥盆世孢子组合及孢粉相研究   总被引:7,自引:1,他引:6  
新疆南部莎车县奇自拉夫组产孢子24属56种(含10新种),可分为两个孢子组合带:即:Leiotriletes microthelis-Punctatisporite irrasus(MI)带和Apiculiretussispora rasissima-Retispora lepidophyta(RL)带。RL带又进一步细分为两个亚带,即下部的Retispora lepidophyta-Ancyro  相似文献   

9.
热带假丝酵母Candida tropicalis (Castellani )Berkhout和麦芽糖假丝酵母C. maltosaKomagata, Nakase & Katsuya是两种可利用烃类作为碳和能量来源的酵母菌,前者还是一种条件致病菌,可引起系统感染。这两种假丝酵母菌在形态和生理生化性状上非常相似,用常规分类方法不易准确地鉴别。本研究对C. Tropicalis和C maltosa的模式菌株以及中国普通微生物菌种保藏中心(CGMCC)保藏的归于这两个种名下的其它菌株进行了脉冲电泳核型比较分析。发现这两个表型相似的种具有明显不同的染色体DNA分子带型,而同一种内的不同菌株却具有相同或相似的分子核型。C.Tropicalis的特异染色体DNA分子带谱为2条8.5—1.2 Mb的带, 4条2.3-3.4 Mb的带。 C maltosa的特异带谱为: 3~4条分子量在1.1-1.3Mb范围内的带, 1条约为2.2Mb的带以及2-3条大小为3.2-3.5Mb的带。 C tropicalis与C maltosa在染色体DNA分子带型上的差异与二者在可溶性淀粉的同化能力和40℃下的生长能力上的差异具有明显的相关性…  相似文献   

10.
宿兵  王文 《遗传学报》1997,24(2):109-115
采用蛋白电泳分析技术研究了来源于我国和越南的猕猴属(Gen usMacaca)5个种(M.mulatta、M.arctoides、M.assamensis、M.thibetana、M.fascicularis)的蛋白多态性及其遗传分化关系。共分传座位30个。在分析的19只恒河猴中,30个遗传座有位9个座位表现出多态性,多态座位百分比P=0.3,平均等位基因数A=1.4,平均杂合度H=0.01045  相似文献   

11.
基于线粒体控制区序列的猕猴属系统发育研究   总被引:6,自引:1,他引:6  
通过线粒体部分控制区DNA序列数据探讨7种猕猴属物种的分子系统发育关系。结果表明熊猴的核苷酸多样度最高,而藏酋猴核苷酸多样度较低。基于控制区序列数据所构建的最大似然树,不考虑食蟹猴的位置,7种猕猴物种可粗略地分为3个种组,即狮尾猴组(包括北平顶猴)、头巾猴组(包括红面猴、熊猴和藏酋猴)和食蟹猴组(包括恒河猴和台湾猴)。与前人(Fooden&Lanyon,1989;Tosi et al,2003a;Deinard&Smith,2001;Evans et al,1999;Hayasaka et al,1996;Morales&Melnick,1998)的结果不同,我们的结果支持食蟹猴比北平顶猴分化早的假设;东部恒河猴(相对于台湾猴)和东部熊猴(相对于藏酋猴)出现并系。与Y染色体、等位酶、核基因以及部分形态学数据推测的结果(Delson,1980;Fooden&Lanyon。1989;Fooden,1990;Tosi et al,2000,2003a,b;Deinard&Smith,2001)一致,红面猴应归于头巾猴组,但此结论与前人(Hayasaka et al,1996;Morales&Melnick,1998;Tosi et al,2003a)依据线粒体得到的结果有较大分歧。  相似文献   

12.
Abstract.— We report the results of one of the first intrageneric analyses to simultaneously survey mitochondrial, Y-chromosomal, and autosomal loci from the same individuals representing the same taxa. Phylogenetic trees were constructed for each of these genetic systems from a pool of 63 macaques, representing all 19 recognized species in this genus, and eight outgroup taxa. The mitochondrial locus analyzed here (1.5 Kb) spans the 3' end of 12S rDNA, tRNA-VAL, and the 5' end of 16S rDNA; the Y chromosome dataset (3.1 Kb) consists of the genes SRY and TSPY; the two autosomal datasets include IRBP intron 3 (1.6 Kb) and the 5' half of C4 "long" intron 9 (3.3 Kb). A total of 1.35 million bases were read, revealing 682 variable sites within the genus Macaca. With regard to earlier unresolved issues of macaque evolution, a comparison of topologies reconstructed from each of the three genetic systems suggests: (1) four monophyletic species groups; (2) an initial bifurcation among Asian macaques between the silenus group progenitor and a M. fascicularis -like taxon, with the latter representing the probable common ancestor to all non-silenus group Asian macaques; (3) a possible hybrid origin of M. arctoides from proto- M. assamensis/thibetana and proto- M. fascicularis; and (4) contemporary introgression between M. mulatta and M. fascicularis in Indochina. Inferences 3 and 4 are of particular interest, because episodes of reticulate evolution often go undetected in analyses employing a single genetic system. Finally, divergence calculations suggest that, in female-philopatric taxa, mitochondrial bifurcations may typically predate Y-chromosomal divergences at the same node.  相似文献   

13.
中国猕猴类(Macaca)的演化   总被引:1,自引:0,他引:1  
蒋学龙 《人类学学报》1992,11(2):184-191
  相似文献   

14.
中国熊猴的分类整理   总被引:1,自引:1,他引:0  
本文通过查看国内收藏的标本对M.assamensis进行了分类整理,认为M.a.coolidgei的亚种地位应予恢复,滇西地区熊猴可能代表一个新类群。通过t检验,滇南和越南等地与滇西北和西藏东南部等地熊猴头骨的某些特征表现出显著或极显著差异。作为区分coolidgei与assamensis的指标:coolidgei体型较小,肩背毛较短,35—75mm,背毛环纹略显或不明显,0—2环,体色更为灰暗;assamensis体型较大,肩背毛较长,85—110mm,背毛环纹明显,3—4环。  相似文献   

15.
We report here the results of one of the first analyses to use male-specific nuclear markers in elucidating primate phylogenetic relationships at the intrageneric level. Two closely linked Y chromosome markers, TSPY and SRY, were sequenced for a total of 3100 bases. Forty-four macaques, representing 18 of the 19 recognized species, were sequenced for the full 3.1 kb, as was 1 individual from each of the following outgroup genera: Papio, Theropithecus, Mandrillus, Allenopithecus,Cercopithecus, Trachypithecus, Presbytis, and Homo. In contrast to recent mtDNA phylogenies, Y chromosome loci support four monophyletic species groups, including a sinica group containing M. arctoides-a classification largely congruent with those of Fooden and Delson. Comparison of mtDNA and Y chromosome phylogenies highlight (1) a potential hybrid origin of Macaca arctoides from M. fascicularis and proto-M. assamensis/thibetana and (2) cases of mitochondrial paraphyly in macaque species whose Y chromosome lineages are monophyletic-a probable evolutionary consequence of philopatric females vs dispersing males. These results raise the question of whether a phylogenetic tree should be a topology of species origins or a depiction of more current species relationships, including subsequent episodes of introgression.  相似文献   

16.
Sera from 510 macaques consisting of Macaca mulatta, Macaca assamensis, Macaca fascicularis, Macaca nemestrina, and Macaca arctoides were investigated for antibodies to simian AIDS type D retrovirus (SRV) by ELISA and Western blot with viral antigens purified from supernatants of SRV-1 infected cell cultures. Of these monkeys, 104 were seropositive by ELISA; only 23 were confirmed by Western blot. The true positive reaction to SRV was found in 15 of 463 (3.2%) M. mulatta and eight of eleven (72.7%) M. assamensis.  相似文献   

17.
缺乏合适的动物模犁是制约艾滋病研究取得重大突破的关键瓶颈之一.细胞内的抗病毒蛋白被称为限制因子.研究不同灵长类动物抗HIV-1宿主限制因子的存在形式及作用机制对建立合适AIDS灵长类动物模型有十分重要的意义.TRIM5α是哺乳动物细胞中一种重要和关键的限制因子,它以物种依赖的方式限制包括HIV-1在内的逆转录病毒的感染.TRIM5-CypA融合基因是存在于新大陆猴与旧大陆猴中的一种独特的TRIM5基因形式.为了研究不同灵长类动物TRIM5基因的存在方式,该文对熊猴、藏婀猴、红面猴及中闰恒河猴4个物种共110只灵长类动物进行了TRIM5-CypA融合模式的研究.首次发现熊猴也存在TRIM5-CypA基因融合现象.熊猴TRIMCyp融合基因形成模式类似于北平顺猴TRIMCyp融合基因模式,即CypA假基因的cDNA序列通过逆转座方式插入到TRIM5基凶的3'-UTR区域.基因序列分析表明,该基因与北平顶猴相应基因序列高度相似;并且其TRIM5内含子6的3'-剪接位点也相应存存G-to-T突变现象(G/T).这提示熊猴也极有可能像北平顶猴一样表达TRIM5-CypA融合蛋白,从而导致熊猴可能跟北平顶猴一样可能被HIV-1感染.因此,熊猴极有希望成为一种新的HIV/AIDS灵长类动物模型.  相似文献   

18.
本工作采用去污剂微铺展——硝酸银染色技术研究熊猴、平顶猴、藏酋猴、恒河猴及其亚种毛耳猴的精母细胞联会复合体(SC)核型、SC的结构及其在减数分裂中的行为。结果表明这几种动物的SC核型以及SC的发育过程基本一致。SC的形成开始于偶线期,成熟于粗线期,解体于双线期。在减数分裂前期,性染色体轴呈强嗜银性,配对明显落后于常染色体。根据减数分裂前期性染色体的形态和行为,性染色体的配对可分为五种类型。此外,本文还对XY染色体的同源性和侧轴加粗等现象进行了讨论。  相似文献   

19.
Cross-amplification of 15 human microsatellites was performed successfully in cynomolgus (Macaca fascicularis) and rhesus (M. mulatta) macaques and 11 other Cercopithecidae species of biomedical and conservation relevance. To allow for quick, efficient, and high-throughput genotyping to assess intra- and interspecific genetic variation, we performed three multiplex sets, each comprised of five markers from different parts of the genome (i.e., autosomes, the MHC region, and the X-chromosome). These multiplex sets are likely to reveal allelic divergence between taxa, which could be used for their discrimination. Population studies on three regional populations of M. fascicularis and one of M. mulatta revealed that most of the loci, with the exception of one monomorphic locus, displayed polymorphisms (the expected heterozygosities were 0.48-0.91 for M. fascicularis, and 0.61-0.93 for M. mulatta), which makes them useful for population genetics. For the multiplex set M1, including the nonlinked autosomal markers, low probabilities of identity were observed: P(ID) values ranged from 8 x 10(-7) to 3 x 10(-5). This multiplex set is reliable for forensic applications, such as individual identification, parentage testing, and kinship analysis, in wild and captive populations.  相似文献   

20.
Reports of hybridization between Macaca tonkeana and Macaca hecki were investigated in Central Sulawesi, Indonesia. We defined sets of morphological traits that were diagnostic for M. tonkeana and M. hecki and then located an areas where animals had intermediate or mosaic features. Hybridization as indicated by morphology was detected between M. tonkeana and M. hecki. The hybrid zone appeared to be strongly centered at the road that crosses the isthmus of Central Sulawesi from Tawaeli to Toboli. Macaques in this region were not morphologically uniform; animals from the western area of the Tawaeli–Toboli road resembled M. hecki, while animals from the eastern area resembled M. tonkeana. The hybrid zone was found to be smaller than previously thought, with maximum dimensions of approximately 15 and 7.5 km. Clines for diagnostic morphological features were broadly coincident, suggesting that the hybrid zone originated by secondary contact. Analysis of three museum specimens collected in 1916 provided evidence that the hybrid zone has been in existence since at least then. The narrow width of the hybrid zone, along with its age, suggested that some prezygotic or postzygotic barrier must exist to full introgression between M. tonkeana and M. hecki. Am. J. Primatol. 43:181–209, 1997. © 1997 Wiley-Liss, Inc.  相似文献   

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