首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到17条相似文献,搜索用时 31 毫秒
1.
2019年2和3月,在西藏自治区墨脱县记录到8种鸟类的新分布,分别是冠鱼狗(Megaceryle lugubris)、黄冠啄木鸟(Picus chlorolophus)、白腹凤鹛(Erpornis zantholeuca)、棕腹 鹛(Pteruthius rufiventer)、小盘尾(Dicrurus remifer)、冕雀(Melanochlora sultanea)、丽?(Sitta formosa)、丽星鹩鹛(Elachura formosa)。  相似文献   

2.
2018年10月至2021年10月,在西藏墨脱县开展鸟类多样性调查期间记录到6种鸟类新分布,分别是大蓝仙鹟 (Cyornis magnirostris)、黄嘴角鸮 (Otus spilocephalus)、金胸雀鹛指名亚种 (Lioparus chrysotis chrysotis)、细嘴钩嘴鹛Sintextus亚种 (Pomatorhinus superciliaris intextus)、白喉姬鹟指名亚种 (Anthipes monileger monileger)、棕胸雅鹛assamense亚种 (Trichastoma tickelli assamense)。  相似文献   

3.
黑冠山雀(Parusrubidiventris)和煤山雀(P.ater)在瓦屋山同域分布,生态位相似,是潜在的竞争者.在垂直分布上,煤山雀的生态位宽度为5.237,显著高于黑冠山雀的2.792,而在水平分布和活动基质2个维度上,二者的生态位宽度值相当.尽管3个维度上2种山雀生态位重叠值均大于0.7,但是它们对3个维度上的资源利用分别存在不同的偏好和侧重.2种山雀的身体量度除了喙宽外均有极显著差异,这应该是2种山雀对环境适应的结果.这2种山雀在巢址选择上各项参数差异均不显著,表明适宜的洞巢可能是它们种间竞争的主要对象.2种山雀的种群数量可能与居留类型有关.空间生态位或食物生态位的分离及适宜的种群数量和比例是它们得以共存的几个重要因素.  相似文献   

4.
2015年6月5~6日,在西藏墨脱县背崩乡西让村附近海拔747~772m发现3种植物,并采集标本,经鉴定,分别为浆果乌桕(Balakata baccata)、波罗蜜(Artocarpus heterophyllus)和木棉(Bombax ceiba)。木棉为西藏自治区木棉科植物的首次记录,浆果乌桕和波罗蜜为西藏自治区植物种的新分布记录。3种植物的发现丰富了西藏的植物区系,为西藏东南部分布有热带雨林的论点提供更多的证据。  相似文献   

5.
在全国第四次中药资源普查试点之西藏自治区墨脱县野外调查中,发现西藏2个新记录属植物——球果藤属(Aspidocarya)与龙珠属(Tubocapsicum),4个新记录种植物——球果藤(Aspidocarya uvifera Hook.f.et Thoms.)、龙珠(Tubocapsicum anomalum)、毛花槭(Acer erianthum Schwer.)和清香藤(Jasminum lanceolarium Roxb.),凭证标本保存于西藏高原生态研究所植物标本室(XZE)。该次发现的植物新记录丰富了西藏的植物区系,更加深入地了解了当地的药用植物资源。  相似文献   

6.
五种雀形目鸟类核型的比较研究   总被引:4,自引:0,他引:4  
染色体核型的比较研究,对于了解物种的特性,探索物种的遗传、进化、系统发育及分类地位都有一定的意义。有关鸟类的核型研究,国外已有不少报道(Castrovicja,1969; Hammar,1966,1975; Ray-Chaudhuri et al.,1969;Shidds,1982;Ta—kagi,1972等)国内在这方面的工作开展较迟,已作过核型分析的鸟类为数不多,仅见王应祥等(1982)的报道。迄今,作过核型研究的鸟类已达500多种,其中雀形目有200种。本文比较分析了五种野生雀形目鸟类的核型,它们是黑头蜡嘴雀,斑鸫,黄腹山雀,红尾伯劳和灰背椋鸟。  相似文献   

7.
王宁  罗平钊  赵凯  刘羿辰 《四川动物》2020,39(3):323-324
<正>2019年4—7月,利用红外相机在西藏自治区亚东县、错那县进行野生动物调查时,拍摄到了细嘴钩嘴鹛Pomatorhinus superciliaris(又称作\"剑嘴鹛\")、大长嘴地鸫Zoothera monticola和灰翅鸫Turdus boulboul,经查阅《中国鸟类分类与分布名录(第三版)》(郑光美,2017),并查找以往的观鸟记录,确认为西藏自治区鸟类分布新记录。4月14日,安放在亚东县海拔3 000 m的1台红外相机拍摄到  相似文献   

8.
<正>2013年4月26日,在青海省三江源国家级自然保护区玛可河保护分区进行野生动物资源调查过程中,于哑巴沟口(101°04'E,32°41'N,海拔3190 m)发现并拍摄到鹤形目鸟类1只,此鸟头顶及上体灰色,两颊、喉、胸、腹部均为白色,下腹部及尾下覆羽棕色,嘴基部膨起,上嘴基部橙红色,腿、脚均为黄色。发现时在山溪边取食,性怯,甚怕人。经查阅《中国鸟类检索系统》(郑作新,2002),《中国鸟类图鉴》(钱燕文,  相似文献   

9.
2019年8月29日,在甘肃省张掖黑河湿地国家级自然保护区高台马尾湖湿地(99°37.6995′E,39°36.1352′N)开展鸟类多样性监测过程中,于10∶17发现1只体长约90 cm、体羽灰白色、飞羽和尾羽灰黑色、跗跖粉红色的大型涉禽鸟类,混群在红嘴鸥Larus ridibundus群中。  相似文献   

10.
2010年1~2月,采用访问与实地调查相结合的方法,对云南无量山国家级自然保护区的西部黑冠长臂猿景东亚种进行第二次全面的群体数量与分布调查.结果 表明:无量山现有长臂猿87群;东坡的群体数量多于西坡,南段多于北段;有15群长臂猿生活在无量山自然保护区外;无量山长臂猿群体的海拔分布范围为1900~2800 m;经度分布范围为100°30′~100°50′E,纬度分布范围为24°17′~24°45′N;无量山自然保护区内的长臂猿群体分布密度为0.24群/hm2;近10年来,无量山长臂猿的群体数量在下降.  相似文献   

11.
2017和2018年每年的4至8月在甘肃莲花山国家级自然保护区,对人工巢箱中黑冠山雀(Periparus rubidiventris)的繁殖生态进行了研究。共悬挂100个巢箱,两年共计招引到15巢黑冠山雀。此外,还记录到4个自然巢,分别位于干枯的糙皮桦(Betula utilise)树洞(1巢)、土坡的缝隙(1巢)和路边水泥护坡的出水管中(2巢)。黑冠山雀雌雄亲鸟共同筑巢,巢内壁为兽毛夹杂少量绒羽,外壁为草茎须根和苔藓。5月中下旬为黑冠山雀的产卵高峰期,清晨产卵,日产1枚,产下最后1枚卵后开始孵卵。平均窝卵数为6枚(4 ~ 7 枚,n = 15),平均卵重(1.12 ± 0.02)g,卵长径(15.30 ± 0.10)mm,卵短径(12.09 ± 0.11)mm(n = 86)。孵卵由雌鸟承担,孵卵期为15 d(14 ~ 16 d,n = 5)。产卵期,雌鸟离巢时有用巢材盖卵的行为,开始孵卵后则不再盖卵。双亲共同育雏,育雏期为16 d和17 d(n = 2)。所记录的18巢黑冠山雀的繁殖成功率为83.3%,人工巢箱(15巢)中繁殖成功率为86.7%,巢捕食者主要为鼠类。  相似文献   

12.
山地次生林冬季鸟类集群的初步研究   总被引:3,自引:0,他引:3  
高玮  冯贺林 《动物学报》1993,39(4):385-391
通过山地次生林两冬季鸟类集群的研究表明,集群的鸟类主要是由大山雀、沼泽山雀和普通Shi组成;每群个体数为7.41-10.63只;据群的行为(单种群、多种集群和单独个体)分析,大多数种类是单独个体活动,冬季鸟类集群大小和组成有空间的变化。气候因子影响群的形成和行为。  相似文献   

13.
The present study determines how populations of Great Tits (Parus major) breeding in southern, mid and northern European latitudes have adjusted their reproductive endocrinology to differences in the ambient temperature during the gonadal cycle. A study based on long-term breeding data, using the Colwell predictability model, showed that the start of the breeding season has a high predictability (≈ 0.8-0.9) at all latitudes, and that the environmental information factor (Ie) progressively decreased from mid Italy (Ie > 4) to northern Finland (Ie < 1). The results indicate that integration of supplementary information, such as ambient temperature, with photoperiodic initial predictive information (day length), becomes progressively more important in maintaining the predictability of the breeding season with decreasing latitude. This hypothesis was verified by exposing photosensitive Great Tits from northern Norway, southern Sweden and northern Italy to sub-maximal photo-stimulatory day lengths (13L:11D) under two different ambient temperature regimes (+ 4 °C and + 20 °C). Changes in testicular size, plasma levels of LH and testosterone were measured. The main results were: (1) Initial testicular growth rate, as well as LH secretion, was affected by temperature in the Italian, but not in birds from the two Scandinavian populations. (2) Maximum testicular size, maximum LH and testosterone levels were maintained for a progressively shorter period of time with increasing latitude, regardless of whether the birds were kept on a low or a high ambient temperature. (3) In birds from all latitudes, the development of photorefractoriness, as indicated by testicular regression and a decrease in plasma levels of LH and testosterone, started much earlier (with the exception for LH Great Tits from northern Scandinavia) when kept on + 20 °C than when kept on + 4 °C. The prolonging effects of a low temperature was more pronounced in Mediterranean birds, than in birds from Scandinavia, and more pronounced in Great Tits from southern Scandinavia than in Great Tits from northern Scandinavia. Ecological implications of the results are discussed, as well as possible impact of global warming on the breeding success of European Great Tits from different breeding latitudes.  相似文献   

14.
    
We hypothesized that Blue Tits Cyanistes caeruleus and Great Tits Parus major from low quality habitat (small woods) would have less yellow ventral plumage than those from high quality habitat (large woods) because they moult faster and/or their diet contains fewer carotenoids. They moult faster because they moult later in the season and are subject to more rapidly shortening daylengths. We tested this using a database of the plumage coloration (chroma, hue and lightness) of birds breeding in woods of different sizes, by manipulating the speed of moult in captive Blue Tits, and by counting the abundance and size of caterpillars (the major source of dietary carotenoids) in the diet of nestlings. In accordance with our hypothesis, juveniles of both species (which moult about three weeks later than adults) were about 8% less saturated in colour (lower chroma) than adults, but there was no significant difference in chroma between habitats. However, both species did differ significantly in hue between large and small woods. Blue Tits forced to moult faster in captivity, at a rate similar to that caused by a month's delay in the start of moult, had yellow flank feathers that were 32% less saturated in colour than those allowed to moult more slowly. Blue Tit nestlings in large woods consumed 47% more caterpillar flesh (per gram of faecal material voided) than those in small woods, and Great Tit pulli 81% more. When habitat effects were controlled for in ANOVAs, Blue Tits mated assortatively on the basis of flank hue and Great Tits on the basis of flank lightness. Flank colour therefore has the capacity to provide information about the potential quality of both habitats, and individual birds, to potential colonists and sexual partners.  相似文献   

15.
16.
大山雀和褐头山雀种间关系研究   总被引:4,自引:0,他引:4       下载免费PDF全文
刘nai发  李岩 《动物学研究》1989,10(4):277-284
在地理分布重叠地区的大山雀Parus major和褐头山雀Parus montanus栖息地海拔高度不同。大山雀栖于海拔2,370米以下,集中于次生杨桦林和老年人工杨树林;褐头山雀栖于海拔2,300米以上,集中于混交林和山杨栎林。它们的栖息地有一定重叠,但重叠值较低。重叠地带觅食生态位的四维中,树种选择一维有所不同,其余三维生态位重叠值均较大。两个种营养生态位有一定重叠,食物大小的重叠值更大。在进化发展过程中,两种山雀间完全的生态分离没有发生。  相似文献   

17.
  总被引:1,自引:0,他引:1  
Hatching failure is widespread in birds, and is usually the result of embryo death rather than infertility. Embryo death can result from both intrinsic and extrinsic factors, some of which may vary across the developmental period. Determining the point at which an embryo died during development may therefore help us to understand the underlying cause of death. Here we describe simple criteria that can be used by field ornithologists to establish the developmental stage of dead embryos found in unhatched passerine eggs, and explain how this can be used to estimate the date of embryo death. We compared the pattern of embryo development over the incubation period for three species, the Zebra Finch Taeniopygia guttata, Blue Tit Cyanistes caeruleus and Great Tit Parus major. We also compared rates of Zebra Finch embryo development under artificial and standard (parental) incubation. Embryo development rates were remarkably similar across the three species and between Zebra Finch embryos under artificial and natural incubation conditions. We therefore suggest that the pattern of embryo development in the Zebra Finch may provide a model for other small passerines with similar incubation periods, but acknowledge that further interspecific comparisons are required before this model is considered more widely applicable. By estimating embryo death dates using our approach, ornithologists will be able to determine temporal patterns of embryo mortality in relation to extrinsic environmental conditions. This approach may shed light on how extrinsic factors such as climate and parental behaviour influence embryo survival in wild birds.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号