An investigation of personality-related recapture bias in black-capped chickadees, Poecile atricapillus

LaRocque, Megan; Arteaga-Torres, Josue David; Haave-Audet, Elène; Sridharan, Sheeraja; Wijmenga, Jan J.; Mathot, Kimberley J.

doi:10.1016/j.anbehav.2022.12.007

Cited by 4 publications

(1 citation statement)

References 51 publications

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“…In the case of predatorprey interactions, a recent study on insects (Athalia rosae) provided evidence that starved larvae were more active and located food faster than non-starved larvae, although they were also attacked more frequently by a predator 43 . In black-headed chickadees, individuals that had higher feeding rates or resumed their activity faster were more easily recaptured 44 , although the recapture rate did not vary as a function of exploration, aggressiveness or boldness. These results, together with our findings, suggest food intake is a powerful mechanism for state-behaviour feedbacks, and highlight the importance of integrating multiple dimensions of state when investigating the relationship between behaviour and fitness 42,45 .…”

Section: Discussionmentioning

confidence: 94%

State-behaviour feedbacks between boldness and food intake shape escape responses in fish

Planas-Sitjà,

Ioannou

2024

Preprint

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Consistent differences in intrinsic state, amplified through state-dependent behaviour, could explain the ubiquity of animal personality variation. Boldness is often positively associated with a high metabolism and food intake. Even though a high food consumption is known to compromise oxygen-demanding activities, the influence of food intake on the anti-predator escape responses has rarely been considered. By conducting experiments with three-spined sticklebacks (Gasterosteus aculeatus) in a setup with real-time tracking and a decoy heron predator, we show that bolder fish benefited from a higher food intake than shy fish, and reacted faster to a predator attack when food intake was the same before being attacked. However, a higher food intake slowed down the escape reaction of fish. These results shine light on how the fitness of shy and bold strategies could be balanced in the wild: the faster reaction of bold fish is impaired by their higher food consumption.

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Section: Discussionmentioning

confidence: 94%

State-behaviour feedbacks between boldness and food intake shape escape responses in fish

Planas-Sitjà,

Ioannou

2024

Preprint

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Age, sex, and temperature shape off-territory feeder use in black-capped chickadees

LaRocque,

Wijmenga,

Mathot

2024

Behavioral Ecology

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Spatial ecology tends to focus on average movement patterns within animal groups; however, recent studies highlight the value of considering movement decisions both within and among individuals. We used a marked population of black-capped chickadees (Poecile atricapillus), to assess the causes and consequences of within- and among-individual differences in chickadee space use. Individuals that used feeders in addition to their most-visited ‘core feeder’ were defined as engaging in off-territory use. We found that females were more likely than males to visit off-territory feeders as ambient temperatures decrease and energetic demands increase. This may be due to sex-related differences in dominance, where males which are the dominant sex in chickadees, have priority access to feeders, while females must increase their foraging areas to meet higher energetic demand. We also found that independent of temperature, adult males were less likely than juvenile males and both juvenile and adult females to forage off-territory. We suggest that this may be due to age-specific benefits of space use in males, where un-paired juvenile males may increase feeder exploration to gain information about potential mates. Finally, we found that chickadees that had a higher propensity to visit off-territory feeders were less likely to survive to the next fall. Overall, our results suggest that dominance hierarchies and individual energetics impact within- and among-individual variation in off-territory feeder use. We provide suggestions for future studies to further investigate fitness-related consequences of within- and among-individual variation in space use.

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The role of human hunters and natural predators in shaping the selection of behavioural types in male wild turkeys

Gulotta,

Wightman,

Collier

et al. 2024

R. Soc. Open Sci.

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The expression of behaviour can vary both among (i.e. behavioural types (BTs)) and within individuals (i.e. plasticity), and investigating causes and consequences of variation has garnered significant attention. Conversely, studies quantifying harvest-induced selection (HIS) on behavioural traits have received significantly less attention, and work investigating HIS and natural selection simultaneously is rare. We studied sources of variation in three movement traits that represented risk-taking and one trait that represented exploration in male eastern wild turkeys ( Meleagris gallopavo silvestris ). We used data from 109 males in two hunted populations located in Georgia and South Carolina, USA. We assessed how both hunters and natural predators simultaneously influenced the selection of male turkey BTs. We found significant among-individual variation in all movement traits and adjustments in risk-taking and exploration relative to whether hunting was occurring. We observed that predators selected against similar BTs across both populations, whereas hunters selected for different BTs across populations. We also demonstrated that significant HIS acts on risk-taking behaviours in both populations, which could render wild turkeys more difficult to harvest if these traits are indeed heritable.

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An investigation of personality-related recapture bias in black-capped chickadees, Poecile atricapillus

Cited by 4 publications

References 51 publications

State-behaviour feedbacks between boldness and food intake shape escape responses in fish

State-behaviour feedbacks between boldness and food intake shape escape responses in fish

Age, sex, and temperature shape off-territory feeder use in black-capped chickadees

The role of human hunters and natural predators in shaping the selection of behavioural types in male wild turkeys

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