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Pereira JM, Ramos JA, Ceia FR, Krüger L, Marques AM, Paiva VH. Boldness predicts foraging behaviour, habitat use and chick growth in a central place marine predator. Oecologia 2024:10.1007/s00442-024-05557-4. [PMID: 38739168 DOI: 10.1007/s00442-024-05557-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 04/17/2024] [Indexed: 05/14/2024]
Abstract
Animal personality can shape individual's fitness. Yet, the mechanistic relationship by which individual's personality traits lead to variations in fitness remains largely underexplored. Here, we used novel object tests to measure boldness of chick-provisioning Cory's shearwaters (Calonectris borealis) from a coastal colony off west Portugal, and deployed GPS loggers to study their at-sea behaviour and distribution. We then tested whether boldness predicts individual differences in adult's trophic ecology and variations in chick growth, to assess potential implications of personality-specific foraging behaviours. Foraging effort was higher for shyer than for bolder individuals, which, during short forays, exhibited larger foraging ranges, and foraged in regions of higher and more variable bathymetry. This suggests that nearby the colony bolder individuals expanded their foraging area to maximize resource acquisition and increase the probability of foraging success. When endeavouring to longer distances, bolder individuals exhibited comparably shorter foraging ranges and targeted low bathymetry regions, likely with enhanced prey availability, while shyer individuals exhibited much larger foraging ranges indicating greater flexibility when foraging in oceanic realms. Despite such differences between bolder and shyer individuals their isotopic niches were similar. Yet, chicks raised by bolder parents grew at a faster rate than those raised by shyer parents. Together, our results suggest that differences in resource acquisition strategies could play a key role through which individual's boldness may influence breeding performance, even when individuals have similar isotopic preferences.
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Affiliation(s)
- Jorge M Pereira
- Department of Life Sciences, University of Coimbra, MARE - Marine and Environmental Sciences Centre / ARNET - Aquatic Research Network, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal.
| | - Jaime A Ramos
- Department of Life Sciences, University of Coimbra, MARE - Marine and Environmental Sciences Centre / ARNET - Aquatic Research Network, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
| | - Filipe R Ceia
- Department of Life Sciences, University of Coimbra, MARE - Marine and Environmental Sciences Centre / ARNET - Aquatic Research Network, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
| | - Lucas Krüger
- Instituto Antártico Chileno, Plaza Muñoz Gamero 1055, 620 000, Punta Arenas, Chile
- Instituto Milenio Biodiversidad de Ecosistemas Antárticos y Subantárticos (BASE), Las Palmeras 3425, Ñuñoa, Santiago, Chile
| | - Ana M Marques
- Department of Life Sciences, University of Coimbra, MARE - Marine and Environmental Sciences Centre / ARNET - Aquatic Research Network, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
| | - Vitor H Paiva
- Department of Life Sciences, University of Coimbra, MARE - Marine and Environmental Sciences Centre / ARNET - Aquatic Research Network, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
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Santos SH, Martins BS, Ramos JA, Pereira JM, Almeida N, Gonçalves AMM, Matos DM, Norte AC, Rodrigues IF, Dos Santos I, Araújo PM, Paiva VH. Omega-3 enriched chick diet reduces the foraging areas of breeders in two closely related shearwaters from contrasting marine environments. J Exp Biol 2023; 226:jeb244690. [PMID: 37326253 DOI: 10.1242/jeb.244690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 06/08/2023] [Indexed: 06/17/2023]
Abstract
Seabirds have evolved several life-history characteristics to help buffer environmental stochasticity. However, particularly during the breeding season, seabirds may be affected by reductions in prey availability and localised oceanographic conditions caused by variations in the environment. The increase in sea surface temperature, triggered by accelerated global warming, is impairing phytoplankton production of omega-3 fatty acids (FAs). Here, we assessed the ecological role of omega-3 FAs on chick development and subsequently on breeder foraging behaviour in two closely related shearwater species foraging in contrasting marine environments. We supplemented chicks with omega-3 FA pills or with control placebo pills and monitored chick growth, chick health status and breeder at-sea foraging behaviour using global positioning system devices. We found that omega-3 chick supplementation reduced the 95% kernel utilization distribution of short trips of Cape Verde shearwaters, but overall, breeders kept a similar foraging pattern between treatments, potentially influenced by predictable prey patches off the West African coast. In contrast, for Cory's shearwaters, the parents of the omega-3 group greatly reduced the foraging effort. This suggests that the proximity to productive prey patches around the colony may help birds to adjust their effort and, therefore, energy expenditure, to changes in the development of their offspring, as driven by their nutritional status. Overall, our results suggest a link between a chick diet enriched in omega-3 FAs and parental foraging effort, providing insight into their ability to cope with a changing and increasingly stochastic marine environment.
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Affiliation(s)
- Sara H Santos
- University of Coimbra, MARE-Marine and Environmental Sciences Centre/ARNET Aquatic Research Network, Department of Life Sciences, 3000-456 Coimbra, Portugal
| | - Beatriz S Martins
- University of Coimbra, MARE-Marine and Environmental Sciences Centre/ARNET Aquatic Research Network, Department of Life Sciences, 3000-456 Coimbra, Portugal
| | - Jaime A Ramos
- University of Coimbra, MARE-Marine and Environmental Sciences Centre/ARNET Aquatic Research Network, Department of Life Sciences, 3000-456 Coimbra, Portugal
| | - Jorge M Pereira
- University of Coimbra, MARE-Marine and Environmental Sciences Centre/ARNET Aquatic Research Network, Department of Life Sciences, 3000-456 Coimbra, Portugal
| | - Nathalie Almeida
- University of Coimbra, MARE-Marine and Environmental Sciences Centre/ARNET Aquatic Research Network, Department of Life Sciences, 3000-456 Coimbra, Portugal
- Biosfera Cabo Verde, Sul do Cemitério, Rua 5 - Caixa Postal 233-000, São Vicente, Cabo Verde
| | - Ana M M Gonçalves
- University of Coimbra, MARE-Marine and Environmental Sciences Centre/ARNET Aquatic Research Network, Department of Life Sciences, 3000-456 Coimbra, Portugal
- Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Diana M Matos
- University of Coimbra, MARE-Marine and Environmental Sciences Centre/ARNET Aquatic Research Network, Department of Life Sciences, 3000-456 Coimbra, Portugal
| | - Ana C Norte
- University of Coimbra, MARE-Marine and Environmental Sciences Centre/ARNET Aquatic Research Network, Department of Life Sciences, 3000-456 Coimbra, Portugal
| | - Isabel F Rodrigues
- Biosfera Cabo Verde, Sul do Cemitério, Rua 5 - Caixa Postal 233-000, São Vicente, Cabo Verde
| | - Ivo Dos Santos
- University of Coimbra, MARE-Marine and Environmental Sciences Centre/ARNET Aquatic Research Network, Department of Life Sciences, 3000-456 Coimbra, Portugal
| | - Pedro M Araújo
- University of Coimbra, MARE-Marine and Environmental Sciences Centre/ARNET Aquatic Research Network, Department of Life Sciences, 3000-456 Coimbra, Portugal
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus Agrário de Vairão, 4485-661 Vairão, Portugal
| | - Vitor H Paiva
- University of Coimbra, MARE-Marine and Environmental Sciences Centre/ARNET Aquatic Research Network, Department of Life Sciences, 3000-456 Coimbra, Portugal
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Salmerón N, Belle S, Cruz FS, Alegria N, Finger JVG, Corá DH, Petry MV, Hernández C, Cárdenas CA, Krüger L. Contrasting environmental conditions precluded lower availability of Antarctic krill affecting breeding chinstrap penguins in the Antarctic Peninsula. Sci Rep 2023; 13:5265. [PMID: 37002269 PMCID: PMC10066220 DOI: 10.1038/s41598-023-32352-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 03/26/2023] [Indexed: 04/03/2023] Open
Abstract
Dramatic decreases of chinstrap penguin populations across the Antarctic Peninsula (AP) are thought to be influenced by climate-driven changes affecting its main prey, the Antarctic krill, however, empirical evidence supporting such hypotheses are scarce. By coupling data on breeding chinstrap penguins, environmental remote sensing and estimates of krill acoustic density, we were able to demonstrate that penguins substantially increased their foraging effort in a year of low krill availability, with consequent reduction in breeding success. A winter of low sea ice cover followed by a summer/spring with stronger wind and lower marine productivity explained the lower and deeper krill availability. Our results highlight the importance of environmental variability on penguin populations, as variability is expected to increase under climate change, affecting foraging behaviour responses.
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Affiliation(s)
- Nuria Salmerón
- International Master of Science in Marine Biological Resources (IMBRSea), Ghent University, Krijgslaan 281/S8, Ghent, Belgium
| | - Solenne Belle
- International Master of Science in Marine Biological Resources (IMBRSea), Ghent University, Krijgslaan 281/S8, Ghent, Belgium
| | - Francisco Santa Cruz
- Departamento Científico, Instituto Antártico Chileno, Plaza Muñoz Gamero, 1055, Punta Arenas, Chile
| | - Nicolás Alegria
- Instituto de Investigación Pesquera (INPESCA), Colón, 2780, Talcahuano, Chile
| | - Júlia Victória Grohmann Finger
- Laboratório de Ornitologia e Animais Marinhos, Universidade do Vale do Rio dos Sinos (UNISINOS), Av. Unisinos, 950, São Leopoldo, Rio Grande do Sul, Brazil
| | - Denyelle Hennayra Corá
- Laboratório de Ornitologia e Animais Marinhos, Universidade do Vale do Rio dos Sinos (UNISINOS), Av. Unisinos, 950, São Leopoldo, Rio Grande do Sul, Brazil
| | - Maria Virginia Petry
- Laboratório de Ornitologia e Animais Marinhos, Universidade do Vale do Rio dos Sinos (UNISINOS), Av. Unisinos, 950, São Leopoldo, Rio Grande do Sul, Brazil
| | | | - César A Cárdenas
- Departamento Científico, Instituto Antártico Chileno, Plaza Muñoz Gamero, 1055, Punta Arenas, Chile
- Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE), Las Palmeras, 3425, Ñuñoa, Santiago, Chile
| | - Lucas Krüger
- Departamento Científico, Instituto Antártico Chileno, Plaza Muñoz Gamero, 1055, Punta Arenas, Chile.
- Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE), Las Palmeras, 3425, Ñuñoa, Santiago, Chile.
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Carreiro AR, Ramos JA, Mata VA, Matos DM, dos Santos I, Araújo PM, Rodrigues I, Almeida NM, Militão T, Saldanha S, Paiva VH, Lopes RJ. High-throughput sequencing reveals prey diversity overlap between sympatric Sulids in the tropical Atlantic. FOOD WEBS 2022. [DOI: 10.1016/j.fooweb.2022.e00258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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