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| DOI | 10.3389/fmars.2024.1367655 |
| Vulnerability to fluctuations in prey and predation landscape in a central place foraging marine predator | |
| 发表日期 | 2024 |
| EISSN | 2296-7745 |
| 起始页码 | 11 |
| 卷号 | 11 |
| 英文摘要 | Introduction Human-induced environmental change is driving a global redistribution of biodiversity, resulting in shifting prey and predation landscapes. These shifting landscapes can lead to changes in behavior, health, and vital rates, with potential implications for population dynamics.Methods In the present study, a state-dependent life-history theory model was developed to investigate the individual- and population-level responses of Australian fur seals (Arctocephalus pusillus doriferus) to changes in prey availability and at-sea mortality risk.Results Rates of pregnancy, pup nursing, and abortion were unaffected by prey availability in the simulated population. Likewise, on-land and at-sea durations were largely unaffected by prey availability, with more pronounced affects for nonreproductive and pregnant females than for lactating females. There was a strong influence of prey availability on the proportion of females that were concurrently pregnant and lactating, largely due to an increase in pup abandonments under low prey availability scenarios. This effect on pup abandonments also had flow on effects for pup recruitment. Increasing at-sea mortality risk resulted in greater offspring losses due to maternal death. The combined impact of prey availability and at-sea mortality risk on the number of simulated female offspring reaching sexual maturity was substantial.Discussion Consequently, our results suggest high vulnerability of the Australian fur seal population to shifting prey and predation landscapes. These results indicate a need for continued monitoring of Australian fur seal pup production and population dynamics in the face of rapid environmental change. |
| 英文关键词 | benthic predator; bioenergetic modelling; dynamic state variable modelling; income breeding; pinniped; population dynamics; state-dependent life-history theory; stochastic dynamic programming |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| WOS类目 | Environmental Sciences ; Marine & Freshwater Biology |
| WOS记录号 | WOS:001199391800001 |
| 来源期刊 | FRONTIERS IN MARINE SCIENCE
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/299931 |
| 作者单位 | Deakin University; University of Washington; University of Washington Seattle |
| 推荐引用方式 GB/T 7714 | . Vulnerability to fluctuations in prey and predation landscape in a central place foraging marine predator[J],2024,11. |
| APA | (2024).Vulnerability to fluctuations in prey and predation landscape in a central place foraging marine predator.FRONTIERS IN MARINE SCIENCE,11. |
| MLA | "Vulnerability to fluctuations in prey and predation landscape in a central place foraging marine predator".FRONTIERS IN MARINE SCIENCE 11(2024). |
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