Vaginal temperature and collar activity variations in relation to fecal progestagens of captive moose

IF 2.4 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Animal Biotelemetry Pub Date : 2023-10-10 DOI:10.1186/s40317-023-00345-y
Jennifer Høy-Petersen, Lucie Lemière, Dan P. Thompson, Alexandra Thiel, John A. Crouse, Erik Ropstad, Anne Randi Græsli, Jon M. Arnemo, Alina L. Evans
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Abstract

Abstract Background Timing of reproductive events can be crucial for a species’ population growth and stability. Accurate detection of reproductive phenology presents a challenge to scientists studying wild species, including moose ( Alces alces ). Currently, there are several established methods for monitoring reproductive activity and events in domestic ruminants, including the use of biologging devices. The main objective of this study was to determine whether female moose display a distinct thermal and activity pattern associated with luteal activity during the estrous cycle, which could be used to determine the onset of their breeding season. We deployed biologging devices and collected fecal samples from 12 captive female moose on the Kenai Peninsula, Alaska, USA to explore variation in vaginal temperature and collar activity and the relationship between these variables and fecal progestagen concentrations. Fecal samples were collected from mid-August to mid-October and analyzed using radioimmunoassay to determine the concentration of fecal progestagens to classify luteal activity. Results Captive female moose displayed an identifiable thermal pattern during the onset of luteal activity from mid-September to mid-October, associated with the initial estrous cycle of their breeding season. In contrast, we did not observe a distinct pattern in activity during this period. Recurring patterns in both vaginal temperature and activity were identified between mid-October and mid-November, however, which were likely associated with subsequent estrous cycles but not included in our fecal sampling period. Conclusions This study supports that female moose display an identifiable pattern in vaginal temperature which is associated with luteal activity of the initial estrous cycle of the breeding season. An identifiable pattern was observed for both vaginal temperature and activity registrations at the presumed timing of subsequent estrous cycle of the breeding season.
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圈养驼鹿阴道温度和项圈活动变化与粪孕激素的关系
摘要:繁殖事件的时间对物种的种群增长和稳定至关重要。对包括驼鹿(Alces Alces)在内的野生物种的研究来说,准确检测生殖物候是一个挑战。目前,有几种既定的方法来监测家养反刍动物的生殖活动和事件,包括使用生物装置。本研究的主要目的是确定雌性驼鹿在发情周期中是否表现出与黄体活动相关的独特的体温和活动模式,这可以用来确定它们繁殖季节的开始。本研究在美国阿拉斯加州基奈半岛对12只圈养母驼鹿进行了粪便采集,目的是探讨阴道温度和项圈活动的变化以及这些变量与粪便中孕激素浓度的关系。8月中旬至10月中旬采集粪便标本,用放射免疫法测定粪便中孕激素的浓度,对黄体活性进行分类。结果圈养母驼鹿在9月中旬至10月中旬黄体活动开始时显示出可识别的热模式,这与它们繁殖季节的初始发情周期有关。相比之下,我们在这一时期没有观察到明显的活动模式。然而,在10月中旬至11月中旬期间,阴道温度和活动的反复模式被确定,这可能与随后的发情周期有关,但不包括在我们的粪便采样期间。结论本研究支持了雌性驼鹿在繁殖季节初始发情周期中表现出与黄体活动相关的阴道温度的可识别模式。在繁殖季节随后的发情周期的假定时间,观察到阴道温度和活动记录的可识别模式。
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来源期刊
Animal Biotelemetry
Animal Biotelemetry Agricultural and Biological Sciences-Animal Science and Zoology
CiteScore
4.20
自引率
11.10%
发文量
33
审稿时长
10 weeks
期刊介绍: Animal Biotelemetry is an open access peer-reviewed journal that publishes the results of studies utilizing telemetric techniques (including biologgers) to understand physiological, behavioural, and ecological mechanisms in a broad range of environments (e.g. terrestrial, freshwater and marine) and taxa. The journal also welcomes descriptions and validations of newly developed tagging techniques and tracking technologies, as well as methods for analyzing telemetric data.
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