Physiological Development anmd Survival of Juvenile Weddell Seals

幼年威德尔海豹的生理发育和生存

• 批准号: 9119885
• 负责人: Michael Castellini
• 金额: $ 60.94万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-01 至 1996-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9119885&HistoricalAwards=false
• 关键词: Physiological; Development; anmd; Survival; Juvenile

The physiology, behavior, and survival of Weddell seals in their first year of life is the subject of this scientific investigation. For Weddell seals, this period encompasses the brief period of maternal dependence (6 weeks), development of swimming and diving abilities and dispersal from natal colonies as shore-fast ice turns to pack ice and open water. It is the least known aspect of the life cycle of any mammal and likely to be the most important period affecting their survival to adulthood and eventual reproductive success. The following areas will be emphasized: 1) physical and physiological changes related to maternal investment, weaning, and development of diving abilities; 2) the ontogeny of diving behavior and dispersal of pups in their first year using satellite telemetry. 3) comparative study of diving and movements by older juveniles (1-2 years old) using satellite telemetry. 4) correlative study of the maternal, physical, physiological and behavioral factors that affect the movements, condition possibly the survival of pups in their first year of life; and 5) continued measurement of population size, survival rates and productivity of Weddell seals in McMurdo Sound as a continued long term study of their population dynamics and context for interpreting interannual variation in condition or behavior of juveniles.

威德尔海豹的生理、行为和生存状况， 生命的第一年是这项科学调查的主题。 对威德尔海豹来说，这一时期包括了 母体依赖（6周），游泳和潜水的发展 能力和扩散从纳塔尔的殖民地作为岸边快速冰转 包装冰块和开阔水域。 这是最不为人所知的方面， 任何哺乳动物的生命周期，可能是最重要的时期 影响到它们成年后的生存和最终的繁殖 成功 将强调以下方面：1）物理和 与母体投资、断奶和 潜水能力的发展; 2）潜水行为的个体发生 以及在第一年利用卫星 遥测技术 3)老年人跳水和运动的比较研究 使用卫星遥测技术对青少年（1-2岁）进行监测。 四、 母亲的、身体的、生理的和 影响运动、状态、 可能是幼崽在生命第一年的存活率;以及 5)继续测量人口规模、存活率和 在麦克默多湾的威德尔海豹的生产力作为一个持续的长期 定期研究其人口动态和 解释条件或行为的年际变化 青少年。