乔治亚州西南部野生鳄鳄龟的季节性繁殖周期

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

Southeastern Naturalist Pub Date : 2023-06-14 DOI:10.1656/058.022.0sp1220

D. Rostal, Amber Teare, Philip Marley, J. Jensen

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引用次数: 1

摘要

摘要/ Abstract摘要:2008年3月至2010年9月，研究了美国乔治亚州西南部野生鳄龟(Macrochelys temminckii)的繁殖周期。我们测量了血浆睾酮(T)、雌二醇(E2)和皮质酮(C)。在男性中观察到睾酮的季节性变化，最高浓度出现在10月。交配和雄性打斗的证据出现在4月。雌鸟的T和E2浓度呈季节性变化，峰值分别出现在3月和4月(与交配和排卵有关)，再次出现在9月和10月(与卵泡发育和卵黄形成有关)。4月观察到输卵管卵(平均窝数28.5)。不同月份间C的浓度无显著差异。繁殖模式与温度和水位的季节变化一致。

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Seasonal Reproductive Cycle of Wild Alligator Snapping Turtles (Macrochelys temminckii) in Southwest Georgia

Abstract - We studied the reproductive cycle of wild Macrochelys temminckii (Alligator Snapping Turtle) in southwest Georgia from March 2008 to September 2010. We measured plasma testosterone (T), estradiol (E2), and corticosterone (C). Seasonal changes in T were observed in males, with maximum concentrations occurring in October. Evidence of mating and male combat were seen in April. Females displayed seasonal changes in T and E2 concentrations, with peaks occurring in March and April, respectively, (in association with mating and ovulation) and again in September and October, respectively, (in association with follicular development and vitellogenesis). We observed oviductal eggs (mean clutch size = 28.5) in April. Concentrations of C were not significantly different between months. Reproductive patterns coincided with seasonal variation in temperature and water level.

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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.