佛罗里达州下阿巴拉契科拉河沿岸鳄龟的筑巢生态

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

Southeastern Naturalist Pub Date : 2023-06-14 DOI:10.1656/058.022.0sp1219

D. R. Jackson, M. Ewert

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引用次数: 3

摘要

摘要/ Abstract摘要:本文研究了栖息在美国佛罗里达州西部阿巴拉契科拉河下游的美洲鳄鳄龟(Macrochelys temminckii)的筑巢生态和性别决定。在1990-1991年期间，我们发现了105个鸟巢(63个完好无损，42个退化);83%发生在突出的疏浚矸石基质上。加上其他年份的数据，130个鸟巢的平均窝仔数为35.1只(最小-最大= 17-52只)。大多数筑巢发生在4月20日至5月18日，每年约有一周的变化。孵化持续到整个八月。在我们保护的不受捕食者侵害的巢中，1990年的平均孵化成功率为78%(24个巢)，1991年为66%(26个巢)。总体的性别比大约是1雄2雌，尽管个别的巢穴与阳光照射有关，从所有的雄性到所有的雌性都有所不同。

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Nesting Ecology of the Alligator Snapping Turtle (Macrochelys temminckii) along the Lower Apalachicola River, Florida

Abstract - We studied nesting ecology and sex determination in a population of Macrochelys temminckii (Alligator Snapping Turtle) inhabiting the lower Apalachicola River in western Florida. During 1990–1991, we located 105 nests (63 intact, 42 depredated); 83% occurred on prominent dredged spoil substrates. Coupled with data from additional years, mean clutch size of 130 nests was 35.1 (min–max = 17–52). Most nesting occurred from 20 April to 18 May, with about a week annual variation. Hatching extended throughout August. In nests that we protected from predators, hatching success averaged 78% (24 nests) in 1990 and 66% (26 nests) in 1991. Overall sex ratios were roughly 1 male: 2 females, although individual nests varied from all males to all females in conjunction with solar exposure.

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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.