Dataset from Lewden et al. 2024 " Changes in body surface temperature reveal the thermal challenge associated with catastrophic moult in captive Gentoo penguins " ...
Once a year, penguins undergo a catastrophic moult replacing their entire plumage during a fasting period on land or on sea-ice during which time individuals can lose 45% of their body mass. In penguins, new feather synthesis precedes the loss of old feathers leading to an accumulation of two feathe...
| Main Authors: | , |
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| Format: | Dataset |
| Language: | unknown |
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figshare
2024
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| Online Access: | https://dx.doi.org/10.6084/m9.figshare.25755582.v1 https://figshare.com/articles/dataset/Dataset_from_Lewden_et_al_2024_b_Changes_in_b_b_body_b_b_surface_temperature_b_b_reveal_the_thermal_challenge_associated_with_b_b_i_i_b_b_catastrophic_moult_in_captive_Gentoo_penguins_b_/25755582/1 |
| Summary: | Once a year, penguins undergo a catastrophic moult replacing their entire plumage during a fasting period on land or on sea-ice during which time individuals can lose 45% of their body mass. In penguins, new feather synthesis precedes the loss of old feathers leading to an accumulation of two feathers layers (double coat) before the old plumage is shed. We hypothesize that the combination of the high metabolism required for new feather synthesis and the potentially high thermal insulation linked to the double coat could lead to a thermal challenge requiring additional peripheral circulation to thermal windows to dissipate extra-heat. To test this hypothesis, we measured the surface temperature of different body regions of captive Gentoo penguins ( Pygoscelis papua ) throughout the moult under constant environmental conditions.The surface temperature of the main body trunk decreased during the initial stages of the moult, suggesting greater thermal insulation. In contrast, the periorbital region, a potential ... |
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