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Xu X, Ye Y, Briggs E, Wang C, Qing B, Song Z, Ding C. Why do parents produce small broods of offspring that have lower body mass, survival, and lifetime reproductive success? A case study in a long-lived bird. Behav Ecol Sociobiol 2023. [DOI: 10.1007/s00265-023-03301-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Garrett DR, Lamoureux S, Rioux Paquette S, Pelletier F, Garant D, Bélisle M. Combined effects of cold snaps and agriculture on the growth rates of Tree Swallows (Tachycineta bicolor). CAN J ZOOL 2022. [DOI: 10.1139/cjz-2021-0210] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The decline of avian aerial insectivores has been greater than any other foraging guild and both climate change and agricultural intensification are leading hypotheses explaining this decline. Spring cold snaps are predicted to increase in frequency due to climate change, and factors associated with agricultural intensification (e.g., toxicological agents, simplification of agricultural landscapes, and reductions of insect prey) potentially exacerbates the negative effects of cold snaps on aerial insectivore nestling growth and body condition. We evaluated this hypothesis using repeated measures of Tree Swallow (Tachycineta bicolor (Vieillot, 1808)) nestling body mass and 9th primary length across an expansive gradient of agricultural intensification. Growth rate, asymptotic body mass, and near fledging 9th primary length were lower for nestlings in landscapes consisting of more agro-intensive monocultures. This 14-year data set of body measures occurring at 2, 6, 12 and 16 days of age showed that the negative impact of cold snaps on the growth of these two traits was stronger for nestlings reared in more agro-intensive landscapes. Our findings provide further evidence that two of the primary hypothesized drivers for the decline of many aerial insectivores may interact and aggravate their decline by reducing fledging survival.
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Affiliation(s)
- Daniel Roy Garrett
- Université de Sherbrooke, 7321, Département de biologie, Sherbrooke, Canada
| | - Stéphane Lamoureux
- Université de Sherbrooke, 7321, Département de biologie, Sherbrooke, Canada
| | | | - Fanie Pelletier
- Université de Sherbrooke, Biologie, Sherbrooke, Quebec, Canada
| | - Dany Garant
- Université de Sherbrooke, Département de Biologie, Sherbrooke, Quebec, Canada
| | - Marc Bélisle
- Université de Sherbrooke, Biologie, Sherbrooke, Quebec, Canada
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Mowery MA, Lubin Y, Segoli M. Invasive brown widow spiders disperse aerially under a broad range of environmental conditions. Ethology 2022. [DOI: 10.1111/eth.13314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Monica A. Mowery
- Mitrani Department of Desert Ecology, Blaustein Institutes for Desert Research Ben‐Gurion University of the Negev Midreshet Ben‐Gurion Israel
| | - Yael Lubin
- Mitrani Department of Desert Ecology, Blaustein Institutes for Desert Research Ben‐Gurion University of the Negev Midreshet Ben‐Gurion Israel
| | - Michal Segoli
- Mitrani Department of Desert Ecology, Blaustein Institutes for Desert Research Ben‐Gurion University of the Negev Midreshet Ben‐Gurion Israel
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