母性和社会地位影响棕熊毛发中的皮质醇浓度

IF 1.6 3区生物学 Q2 ZOOLOGY

Zoology Pub Date : 2025-03-01 DOI:10.1016/j.zool.2025.126257

Marcello Franchini , Ashlee J. Mikkelsen , Agnieszka Sergiel , Nuria Selva , David M. Janz , Jonas Kindberg , Andreas Zedrosser

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引用次数: 0

摘要

毛发皮质醇浓度受不同生物因素的影响，包括年龄、性别和生殖状态，并能提供重要的健康信息。利用野生斯堪的纳维亚棕熊（Ursus arctos）的皮质醇浓度，本研究的目的是调查皮质醇在个体之间与年龄、性别和生殖状态（单独个体与家庭群体中的个体）相关的变化。在1990年至2016年捕获的303只棕熊（162只雄性和141只雌性，年龄从1岁到9岁）的448个毛发样本中测量了皮质醇浓度。我们发现，家庭群体的成员，即母亲及其依赖的后代，与单独的个体（雄性或雌性）相比，皮质醇浓度明显更高。家庭群体中较高的能量消耗可能与后代的成长以及抚养后代所产生的母亲成本有关。我们的研究结果为哺乳动物的母性护理和生殖状态的生理影响提供了有价值的见解。

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Maternal and social status affect hair cortisol concentrations in brown bears

Hair cortisol concentration is affected by different biological factors, including age, sex, and reproductive status, and can provide important insights into fitness. Using cortisol concentrations of wild Scandinavian brown bears, Ursus arctos, the purpose of this study was to investigate cortisol variations among individuals in relation to age, sex, and reproductive status (solitary individuals vs individuals in a family group). Cortisol concentrations were measured in 448 hair samples of 303 brown bears (162 males and 141 females, from one to nine years of age) captured from 1990 to 2016. We found that members of family groups, i.e., mothers as well as their dependent offspring, had significantly higher cortisol concentrations compared to solitary individuals (males or females). Higher energetic costs in family groups are likely linked to growth of the offspring as well as maternal costs incurred by the rearing of offspring. Our findings provide valuable insights into the physiological effects of maternal care and reproductive status in mammals.

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来源期刊

Zoology 生物-动物学

CiteScore

3.90

自引率

0.00%

发文量

审稿时长

70 days

期刊介绍： Zoology is a journal devoted to experimental and comparative animal science. It presents a common forum for all scientists who take an explicitly organism oriented and integrative approach to the study of animal form, function, development and evolution. The journal invites papers that take a comparative or experimental approach to behavior and neurobiology, functional morphology, evolution and development, ecological physiology, and cell biology. Due to the increasing realization that animals exist only within a partnership with symbionts, Zoology encourages submissions of papers focused on the analysis of holobionts or metaorganisms as associations of the macroscopic host in synergistic interdependence with numerous microbial and eukaryotic species. The editors and the editorial board are committed to presenting science at its best. The editorial team is regularly adjusting editorial practice to the ever changing field of animal biology.