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北美CHIHUAHUAN荒漠旗尾更格卢鼠(DIPODOMYS SPECTABILIS)的种群生态学

曾宗永   

  1. 四川大学生物系
  • 出版日期:2006-08-09 发布日期:2007-09-14

POPULATION ECOLOGY OF A DESERT RODENT DIPONOMYS SPECTABILIS IN THE CHINUAHUAN DESERT OF NORTH AMERICA

ZENG Zongyong   

  • Online:2006-08-09 Published:2007-09-14

摘要: 本文提供了1978-1985年美国亚利桑Chihuahuan荒漠旗尾更格卢鼠(Dipodomys spectabtis)种群的密度,体重、繁殖、扩散和寿命的标志重捕资料。较长的寿命、较重的体重、低繁殖力和喜巢行为标志着它的灵播的生活史,这种生活史使该鼠的种群密度适应荒漠环境的变化而变化。本文还比较了与旗尾更格卢鼠共同生擂于同~ 地区的同属物种麦利阿姆更格卢鼠(Merriams kangaroo rat,Ditpoddcmys merriami)的生活史性状的差异,这些差异使这两个同属物种能利用不同资源或以不同方式剥用相同资源,从而保证了它们的共同生存.

关键词: 共存, 荒漠, 扩散, 生活史, 旗尾更格卢鼠, 种群生态学

Abstract: The data are presented on population density,body weight reproduction dispersal life span for an population of Dipodomys spectabilis in the Chihuahuan Desert of southwestern Arizona,USA from 1978 through 1985.Its long survival,relatively heavy bodyweight,low reproductive effort and philopatric behavior charaeterize the flexible life history that enables the population density of this kangaron rat to vary responding to wide,unpreductive fluctuations in this desert environment.The life history traits of both D.spectabilis and its congeneric species, D .merriami occxisting the same area.are compared. The difference of the life history traits between them permits their coexisten by enabling them to use differentresource or to use the same resoures in different ways.

Key words: Desert, Bannertailed kangaroo rat, Dipodomys spectabilis, Population ecology, coexistence, Dispersal