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白额鹱生态及迁徙的研究 总被引:1,自引:2,他引:1
青岛沿海岛屿是白额鹱的主要繁殖地之一。1987-1991年观察,白额鹱于2月中旬前后迁抵大公岛,筑于岩洞石隙中,6月底至7月上旬前后开始产卵,年产1窝,每窝1枚。10月下旬至11月上旬迁离。该鸟上岛上(巢洞外)为夜间活动性鸟类,雌雄羽色相同而鸣声显著有别,故根据鸣声判断雌雄与求偶行为。回收环志鸟表明,白额鹱翌年仍返回原地繁殖。 相似文献
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1973年12月下旬,我们在温州市调查时获得一只鸟类标本。经鉴定,是白额圆尾鹱Pterodromahypoleuca hyppleuca(Salvin)。该鸟系温州标本厂采集人员于1969年11月5日,在福建福鼎海滩边击获后,制成标本。体长305,嘴峰24,翼210,中央尾羽121,外侧尾羽107,跗蹠26。性别未悉。 白额圆尾鹱分布于澳大利亚东南沿海及塔斯马尼亚、新西兰、斐济以及大洋洲的一些岛屿。在我国却是一种极为罕见的鸟类,仅1926年台湾省有过一只雌鸟的纪录。现再次在福建北部沿海发现,证实 相似文献
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2018年7月11日,在浙江省龙泉市车辆检测中心空地内(地理坐标为119°06'57.49"E,28°03'11.32"N)发现1只蜷缩在石子草丛、失去飞行能力的活体黑褐色鸟类由于发现时鸟类身体状况差,尝试野外放生未成功,尽全力救护仍自然死亡,标本现存放于浙江省自然博物馆,标本号:20180632该种鸟类的鉴别特征十分明显(图1),经核对《中国鸟类野外手册》(MacKinnon et al.,2000)和《中国海洋与湿地鸟类》(马志军等,2018)等资料,确认是楔尾鹱Ardenna pacifica。进一步查阅资料,在《浙江动物志(鸟类)》(诸葛阳等,1990) X中国鸟类分类与分布名录》(第三版)(郑光美,2017)中都没有楔尾鹱的分布记载,在其他有关文献和报道中仅上海(薄顺奇等,2012)、香港(香港观鸟会,2013)、海南和台湾有记录(郑光美,2017),因此,确认其为浙江省鸟类新记录。 相似文献
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白额鹱Puffinus leucomelas和黑叉尾海燕Oceanodroma monorhis是青岛两种常见海洋性鸟类。大公岛、潮连岛、千里岩是它们的栖息繁殖地。我们于1986年春秋两季和1987年春季对其繁殖地之一——大公岛进行了环志,所得结果如下。1 生境与方法大公岛(35°57'N,120°29'E)位于青岛市东南方20km处。面积0.14 km~2, 相似文献
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Replacement of two to four guanines by adenines in the human telomere DNA repeat dG3(TTAG3)3 did not hinder the formation of quadruplexes if the substitutions took place in the terminal tetrad bridged by the diagonal loop of the intramolecular antiparallel three‐tetrad scaffold, as proved by CD and PAGE in both Na+ and K+ solutions. Thermodynamic data showed that, in Na+ solution, the dG3(TTAG3)3 quadruplex was destabilized, the least by the two G:A:G:A tetrads, the most by the G:G:A:A tetrad in which the adenosines replaced syn‐guanosines. In physiological K+ solution, the highest destabilization was caused by the 4A tetrad. In K+, only the unmodified dG3(TTAG3)3 quadruplex rearranged into a K+‐dependent quadruplex form, none of the multiple adenine‐modified structures did so. This may imply biological consequences for nonrepaired A‐for‐G mutations. © 2010 Wiley Periodicals, Inc. Biopolymers 93: 880–886, 2010. 相似文献
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T R Varma 《BMJ (Clinical research ed.)》1987,294(6581):1230-1231
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R Smith 《BMJ (Clinical research ed.)》1987,294(6573):702-703
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Julia D. Harrison 《American anthropologist》2000,102(1):159-160
Oka: Behind the Barricades. 1998. 312 minutes. For more information contact the National Film Board of Canada, 3155 Côte de Lisse Rd., St. Laurent, Quebec H4N 2N4. Series of four videos:
Kanehsatake: 270 Years of Resistance. 1993. 120 minutes. Directed by Alanis Obomsawin .
Spudwrench: Kahnawake Man. 1997. 58 minutes. Directed by Alanis Obomsawin .
My Name is Kahentiiosta. 1995. 30 minutes. Directed by Alanis Obomsawin .
Acts of Defiance. 1992. 104 minutes. Directed by Alec MacLeod . 相似文献
Kanehsatake: 270 Years of Resistance. 1993. 120 minutes. Directed by Alanis Obomsawin .
Spudwrench: Kahnawake Man. 1997. 58 minutes. Directed by Alanis Obomsawin .
My Name is Kahentiiosta. 1995. 30 minutes. Directed by Alanis Obomsawin .
Acts of Defiance. 1992. 104 minutes. Directed by Alec MacLeod . 相似文献