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Amin B, Verbeek L, Haigh A, Griffin LL, Ciuti S. Risk-taking neonates do not pay a survival cost in a free-ranging large mammal, the fallow deer ( Dama dama). ROYAL SOCIETY OPEN SCIENCE 2022; 9:220578. [PMID: 36147938 PMCID: PMC9490327 DOI: 10.1098/rsos.220578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 09/05/2022] [Indexed: 05/10/2023]
Abstract
Recent debate has focused on whether variation in personality primarily reflects variation in resource allocation or resource acquisition of individuals. These two mechanisms predict different relationships between personality and survival. If personality mainly reflects variation in resource allocation, then bold (i.e. risk-taking) individuals are expected to live shorter lives, whereas the opposite pattern is expected with resource acquisition. Here we studied the relationship between neonate personality and early-life survival in 269 juveniles of a population of fallow deer (Dama dama). We found that bolder individuals paid no apparent survival cost. Interestingly, among-individual differences in the physiological response at capture (heart rates, which covary with the behavioural response, i.e. latency to leave) were linked to survival, where individuals with lower heart rates when handled by humans had a higher probability of early-life survival. This suggests that bolder individuals may be of higher state than their shyer counterparts. As the first study linking neonate personality to survival in a free-ranging mammal, we provide novel insights into drivers behind early-life individual variation.
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Affiliation(s)
- Bawan Amin
- Laboratory of Wildlife Ecology and Behaviour, School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
| | - Laura Verbeek
- Mathematical Institute, Leiden University, Leiden, The Netherlands
| | - Amy Haigh
- Laboratory of Wildlife Ecology and Behaviour, School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
| | - Laura L. Griffin
- Laboratory of Wildlife Ecology and Behaviour, School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
| | - Simone Ciuti
- Laboratory of Wildlife Ecology and Behaviour, School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
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Amin B, Verbeek L, Haigh A, Griffin LL, Ciuti S. Risk-taking neonates do not pay a survival cost in a free-ranging large mammal, the fallow deer ( Dama dama). ROYAL SOCIETY OPEN SCIENCE 2022; 9:220578. [PMID: 36147938 DOI: 10.6084/m9.figshare.c.6189637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 09/05/2022] [Indexed: 05/25/2023]
Abstract
Recent debate has focused on whether variation in personality primarily reflects variation in resource allocation or resource acquisition of individuals. These two mechanisms predict different relationships between personality and survival. If personality mainly reflects variation in resource allocation, then bold (i.e. risk-taking) individuals are expected to live shorter lives, whereas the opposite pattern is expected with resource acquisition. Here we studied the relationship between neonate personality and early-life survival in 269 juveniles of a population of fallow deer (Dama dama). We found that bolder individuals paid no apparent survival cost. Interestingly, among-individual differences in the physiological response at capture (heart rates, which covary with the behavioural response, i.e. latency to leave) were linked to survival, where individuals with lower heart rates when handled by humans had a higher probability of early-life survival. This suggests that bolder individuals may be of higher state than their shyer counterparts. As the first study linking neonate personality to survival in a free-ranging mammal, we provide novel insights into drivers behind early-life individual variation.
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Affiliation(s)
- Bawan Amin
- Laboratory of Wildlife Ecology and Behaviour, School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
| | - Laura Verbeek
- Mathematical Institute, Leiden University, Leiden, The Netherlands
| | - Amy Haigh
- Laboratory of Wildlife Ecology and Behaviour, School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
| | - Laura L Griffin
- Laboratory of Wildlife Ecology and Behaviour, School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
| | - Simone Ciuti
- Laboratory of Wildlife Ecology and Behaviour, School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
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Smiley RA, LaSharr TN, Abernathy HN, Shakeri YN, Levine RL, Rankins ST, Jakopak RP, Rafferty RT, Kolek JT, Wagler BL, Dwinnell SPH, Robinson TJ, Randall JE, Kaiser RC, Thonhoff M, Scurlock B, Fieseler T, Fralick GL, Monteith KL. Biomarkers of Animal Nutrition: From Seasonal to Lifetime Indicators of Environmental Conditions. Life (Basel) 2022; 12:life12030375. [PMID: 35330126 PMCID: PMC8949293 DOI: 10.3390/life12030375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 02/24/2022] [Accepted: 02/28/2022] [Indexed: 11/16/2022] Open
Abstract
Nutrition underpins survival and reproduction in animal populations; reliable nutritional biomarkers are therefore requisites to understanding environmental drivers of population dynamics. Biomarkers vary in scope of inference and sensitivity, making it important to know what and when to measure to properly quantify biological responses. We evaluated the repeatability of three nutritional biomarkers in a large, iteroparous mammal to evaluate the level of intrinsic and extrinsic contributions to those traits. During a long-term, individual-based study in a highly variable environment, we measured body fat, body mass, and lean mass of mule deer (Odocoileus hemionus) each autumn and spring. Lean mass was the most repeatable biomarker (0.72 autumn; 0.61 spring), followed by body mass (0.64 autumn; 0.53 spring), and then body fat (0.22 autumn; 0.01 spring). High repeatability in body and lean mass likely reflects primary structural composition, which is conserved across seasons. Low repeatability of body fat supports that it is the primary labile source of energy that is largely a product of environmental contributions of the previous season. Based on the disparate levels in repeatability among nutritional biomarkers, we contend that body and lean mass are better indicators of nutritional legacies (e.g., maternal effects), whereas body fat is a direct and sensitive reflection of recent nutritional gains and losses.
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Affiliation(s)
- Rachel A. Smiley
- Haub School of the Environment and Natural Resources, University of Wyoming, 804 E Fremont St., Laramie, WY 82072, USA; (T.N.L.); (H.N.A.); (Y.N.S.); (R.L.L.); (S.T.R.); (R.P.J.); (R.T.R.); (J.T.K.); (B.L.W.); (K.L.M.)
- Wyoming Cooperative Fish and Wildlife Research Unit, Department of Zoology and Physiology, University of Wyoming, 1000 E University Ave., Laramie, WY 82071, USA
- Correspondence:
| | - Tayler N. LaSharr
- Haub School of the Environment and Natural Resources, University of Wyoming, 804 E Fremont St., Laramie, WY 82072, USA; (T.N.L.); (H.N.A.); (Y.N.S.); (R.L.L.); (S.T.R.); (R.P.J.); (R.T.R.); (J.T.K.); (B.L.W.); (K.L.M.)
- Wyoming Cooperative Fish and Wildlife Research Unit, Department of Zoology and Physiology, University of Wyoming, 1000 E University Ave., Laramie, WY 82071, USA
| | - Heather N. Abernathy
- Haub School of the Environment and Natural Resources, University of Wyoming, 804 E Fremont St., Laramie, WY 82072, USA; (T.N.L.); (H.N.A.); (Y.N.S.); (R.L.L.); (S.T.R.); (R.P.J.); (R.T.R.); (J.T.K.); (B.L.W.); (K.L.M.)
| | - Yasaman N. Shakeri
- Haub School of the Environment and Natural Resources, University of Wyoming, 804 E Fremont St., Laramie, WY 82072, USA; (T.N.L.); (H.N.A.); (Y.N.S.); (R.L.L.); (S.T.R.); (R.P.J.); (R.T.R.); (J.T.K.); (B.L.W.); (K.L.M.)
- Wyoming Cooperative Fish and Wildlife Research Unit, Department of Zoology and Physiology, University of Wyoming, 1000 E University Ave., Laramie, WY 82071, USA
| | - Rebecca L. Levine
- Haub School of the Environment and Natural Resources, University of Wyoming, 804 E Fremont St., Laramie, WY 82072, USA; (T.N.L.); (H.N.A.); (Y.N.S.); (R.L.L.); (S.T.R.); (R.P.J.); (R.T.R.); (J.T.K.); (B.L.W.); (K.L.M.)
| | - Seth T. Rankins
- Haub School of the Environment and Natural Resources, University of Wyoming, 804 E Fremont St., Laramie, WY 82072, USA; (T.N.L.); (H.N.A.); (Y.N.S.); (R.L.L.); (S.T.R.); (R.P.J.); (R.T.R.); (J.T.K.); (B.L.W.); (K.L.M.)
- Wyoming Cooperative Fish and Wildlife Research Unit, Department of Zoology and Physiology, University of Wyoming, 1000 E University Ave., Laramie, WY 82071, USA
| | - Rhiannon P. Jakopak
- Haub School of the Environment and Natural Resources, University of Wyoming, 804 E Fremont St., Laramie, WY 82072, USA; (T.N.L.); (H.N.A.); (Y.N.S.); (R.L.L.); (S.T.R.); (R.P.J.); (R.T.R.); (J.T.K.); (B.L.W.); (K.L.M.)
| | - Rebekah T. Rafferty
- Haub School of the Environment and Natural Resources, University of Wyoming, 804 E Fremont St., Laramie, WY 82072, USA; (T.N.L.); (H.N.A.); (Y.N.S.); (R.L.L.); (S.T.R.); (R.P.J.); (R.T.R.); (J.T.K.); (B.L.W.); (K.L.M.)
- Wyoming Cooperative Fish and Wildlife Research Unit, Department of Zoology and Physiology, University of Wyoming, 1000 E University Ave., Laramie, WY 82071, USA
| | - Jaron T. Kolek
- Haub School of the Environment and Natural Resources, University of Wyoming, 804 E Fremont St., Laramie, WY 82072, USA; (T.N.L.); (H.N.A.); (Y.N.S.); (R.L.L.); (S.T.R.); (R.P.J.); (R.T.R.); (J.T.K.); (B.L.W.); (K.L.M.)
- Wyoming Cooperative Fish and Wildlife Research Unit, Department of Zoology and Physiology, University of Wyoming, 1000 E University Ave., Laramie, WY 82071, USA
| | - Brittany L. Wagler
- Haub School of the Environment and Natural Resources, University of Wyoming, 804 E Fremont St., Laramie, WY 82072, USA; (T.N.L.); (H.N.A.); (Y.N.S.); (R.L.L.); (S.T.R.); (R.P.J.); (R.T.R.); (J.T.K.); (B.L.W.); (K.L.M.)
- Wyoming Cooperative Fish and Wildlife Research Unit, Department of Zoology and Physiology, University of Wyoming, 1000 E University Ave., Laramie, WY 82071, USA
| | - Samantha P. H. Dwinnell
- Arctic Terrestrial Biology, The University Centre in Svalbard, P.O. Box 156 N−9187, 9170 Longyearbyen, Norway;
| | - Timothy J. Robinson
- Department of Mathematics & Statistics, University of Wyoming, Department 3036, 1000 E University Ave., Laramie, WY 82071, USA;
| | - Jill E. Randall
- Wyoming Game and Fish Department, Pinedale Regional Office, 432 Mill St., Pinedale, WY 82941, USA; (J.E.R.); (B.S.); (T.F.)
| | - Rusty C. Kaiser
- United States Forest Service, Big Piney Ranger District, 10418 South US Highway 189, Big Piney, WY 83113, USA;
| | - Mark Thonhoff
- Bureau of Land Management, Pinedale Field Office, 1625 West Pine St., Pinedale, WY 82941, USA;
| | - Brandon Scurlock
- Wyoming Game and Fish Department, Pinedale Regional Office, 432 Mill St., Pinedale, WY 82941, USA; (J.E.R.); (B.S.); (T.F.)
| | - Troy Fieseler
- Wyoming Game and Fish Department, Pinedale Regional Office, 432 Mill St., Pinedale, WY 82941, USA; (J.E.R.); (B.S.); (T.F.)
| | - Gary L. Fralick
- Wyoming Game and Fish Department, Jackson Regional Office, 420 North Cache, Jackson, WY 83001, USA;
| | - Kevin L. Monteith
- Haub School of the Environment and Natural Resources, University of Wyoming, 804 E Fremont St., Laramie, WY 82072, USA; (T.N.L.); (H.N.A.); (Y.N.S.); (R.L.L.); (S.T.R.); (R.P.J.); (R.T.R.); (J.T.K.); (B.L.W.); (K.L.M.)
- Wyoming Cooperative Fish and Wildlife Research Unit, Department of Zoology and Physiology, University of Wyoming, 1000 E University Ave., Laramie, WY 82071, USA
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