在当地生活:长寿蜥蜴的亲子关系导致其年空间利用模式的一致性

IF 1.9 3区 生物学 Q1 ZOOLOGY
J. B. Stalker, J. L. Jones, S. J. Hromada, K. E. Nussear, A. G. Vandergast, D. A. Wood, C. R. Tracy, C. M. Gienger
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引用次数: 0

摘要

对于表现出范围居住的动物,家庭范围是量化空间使用的有用框架。一些爬行动物可以在野外生活几十年,经历极端的环境变化,影响栖息地的使用模式。随着时间的推移,个人可能会改变他们对空间的使用,从而降低了单年家庭范围估计的效用。在内华达州克拉克县的三个莫哈韦沙漠站点收集了吉拉怪(Heloderma suectum)的甚高频(VHF)遥测数据,并使用自相关核密度估计器计算了其家庭范围利用分布。在个体和种群中,家园范围的大小是一致的,在任何地点,家园范围的大小在不同的年份都没有变化。为了测量家庭范围保真度(年复一年的重复使用),我们计算了跟踪个体的每个年份组合的Bhattacharyya系数(BC),并对个体和种群的估计值进行了平均。平均BC评分为0.86(评分范围从0到1;0 =无重叠,1 =完全重叠),并且在种群之间没有变化。我们建立了家庭范围面积积累模型,以估计渐近稳定性所需的最小样本量,并发现家庭范围积累在年内和跨年份和个体是动态和可变的。对个体的运动频率、每次运动的平均距离和每个活动季节的累积距离的分析表明,运动模式每年变化很大。种群和个体之间空间利用的异质性表明,个体和当地环境的变化,而不是资源可用性的年度变化,可能决定了南内华达州吉拉怪物的活动范围和运动模式。移动模式的年变异性并不转化为活动范围大小或位置的变异性,该物种表现出极高的亲和性,在至少3-5年的时间内使用相同的区域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Livin' la vida local: philopatry results in consistent patterns of annual space use in a long-lived lizard

Livin' la vida local: philopatry results in consistent patterns of annual space use in a long-lived lizard

Livin' la vida local: philopatry results in consistent patterns of annual space use in a long-lived lizard

For animals exhibiting range residency, the home range is a useful framework to quantify space use. Some reptiles can live decades in the wild and experience extreme environmental variation that influences patterns of habitat use. Individuals may modify their use of space over time, reducing the utility of single-year home range estimates. Very high frequency (VHF) telemetry data were collected for Gila monsters (Heloderma suspectum) at three Mojave Desert sites in Clark County, Nevada, and home range utilization distributions were calculated using an autocorrelated kernel density estimator. Home range size was consistent within individuals and populations, and home range size did not vary across years at any site. To measure home range fidelity (year-to-year reuse), we calculated Bhattacharyya's coefficient (BC) for each combination of years in which an individual was tracked and averaged estimates across individuals and populations. The average BC score was 0.86 (scale from 0 to 1; 0 = no overlap and 1 = complete overlap) and did not vary among populations. We modeled home range area accumulation to estimate the minimum sample size needed for asymptotic stability and found home range accumulation to be dynamic and variable within and across years and individuals. Analysis of the frequency of movement by individuals, average distance traveled per movement, and cumulative distance traveled per active season revealed that movement patterns vary considerably by year. Heterogeneity of space use among populations and individuals suggests that individual and local environmental variation, rather than annual variation in resource availability, may drive home range size and movement patterns of Gila monsters in southern Nevada. Annual variability in movement patterns did not translate to variability in home range size or location, and the species exhibits extremely high philopatry, using the same areas for periods of at least 3–5 years.

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来源期刊
Journal of Zoology
Journal of Zoology 生物-动物学
CiteScore
3.80
自引率
0.00%
发文量
90
审稿时长
2.8 months
期刊介绍: The Journal of Zoology publishes high-quality research papers that are original and are of broad interest. The Editors seek studies that are hypothesis-driven and interdisciplinary in nature. Papers on animal behaviour, ecology, physiology, anatomy, developmental biology, evolution, systematics, genetics and genomics will be considered; research that explores the interface between these disciplines is strongly encouraged. Studies dealing with geographically and/or taxonomically restricted topics should test general hypotheses, describe novel findings or have broad implications. The Journal of Zoology aims to maintain an effective but fair peer-review process that recognises research quality as a combination of the relevance, approach and execution of a research study.
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