德克萨斯州鳄龟的分布和人口统计:20年的观察

IF 0.6 4区环境科学与生态学 Q4 BIODIVERSITY CONSERVATION

Southeastern Naturalist Pub Date : 2023-06-14 DOI:10.1656/058.022.0sp1212

David Rosenbaum, D. Rudolph, Daniel Sáenz, L. Fitzgerald, R. Nelson, Christopher S. Collins, Toby J. Hibbitts, Ricky W. Maxey, Paul S Crump, C. Schalk

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引用次数: 6

摘要

摘要:美国德克萨斯州包含了鳄鳄鳄龟(Macrochelys temminckii)的西南范围边缘，但该州关于该物种的出版信息相对较少。为了记录其分布范围并评估其分布和人口统计的时间变化，我们在1999年至2001年期间对23个地点进行了采样。然后，我们在2020-2021年对其中的22个地点进行了重新调查，并对另外29个地点进行了采样。在22个重新调查的地点中，18个的检测结果是一致的。性别比例和体型分布在调查中是相似的。在有拖带线的地区，单位努力渔获量(CPUE)较低，证实了海龟和渔具之间已知的相互作用。CPUE的变化模式表明墨西哥湾流域是该物种的重要系统，而密西西比流域的CPUE则较低。

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Distribution and Demography of the Alligator Snapping Turtle (Macrochelys temminckii) in Texas: A 20-Year Perspective

Abstract - Texas contains the southwestern range edge of Macrochelys temminckii (Alligator Snapping Turtle), but there is relatively little published information on this species within the state. To document its range and assess temporal changes in its distribution and demography, we sampled 23 sites from 1999 to 2001. We then resurveyed 22 of these sites and sampled 29 additional sites in 2020–2021. Detection outcomes were consistent between 18 of the 22 resurveyed sites. Sex ratios and body-size distributions were similar across surveys. Catch per unit effort (CPUE) was lower in areas with trotlines, corroborating known interactions between turtles and fishing gear. Patterns in CPUE indicate Gulf of Mexico-draining watersheds are important systems for the species, while CPUE was lower in Mississippi-draining watersheds.

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来源期刊

Southeastern Naturalist 环境科学-生态学

CiteScore

1.20

自引率

16.70%

发文量

审稿时长

18-36 weeks

期刊介绍： The Southeastern Naturalist covers all aspects of the natural history sciences of terrestrial, freshwater, and marine organisms and the environments of the southeastern portion of North America, roughly bounded from North Carolina south to Florida, west to Texas, north to Oklahoma, and east back to North Carolina. Manuscripts based on field studies outside of this region that provide information on species within this region may be considered at the Editor’s discretion.