How king penguins advertise their sexual maturity

Kriesell, Hannah Joy; Aubin, Thierry; Planas‐Bielsa, Víctor; Schull, Quentin; Bonadonna, Francesco; Cornec, Clément; Maho, Yvon Le; Troudet, Laura; Bohec, Céline Le

doi:10.1016/j.anbehav.2021.05.015

Cited by 4 publications

(2 citation statements)

References 98 publications

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“…The first group of molting individuals ( N = 12, four males, eight females) was selected based on the wear and tear of the plumage and their visibly high body mass. A second group of breeding male penguins ( N = 12) was selected based on their courtship song and their renewed plumage. , Penguins were captured at the periphery of the colony upon their arrival from the ocean. Each group was housed in open wooden pens of 3 × 4 m within 10 m of the colony.…”

Section: Methodsmentioning

confidence: 99%

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Blood Kinetics of Lipophilic and Proteinophilic Pollutants during Two Types of Long-Term Fast in King Penguins

Mollier,

Bustamante,

Martinez-Alvarez

et al. 2024

Environ. Sci. Technol.

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In vertebrates, fasting is an intricate physiological process associated with strong metabolic changes, yet its effect on pollutant residue variation is poorly understood. Here, we quantified long-term changes in plasma concentrations of 20 organochlorine and 16 perfluoroalkyl pollutants in king penguins Aptenodytes patagonicus during the breeding and molting fasts, which are marked by low and high levels of protein catabolism, respectively, and by strong lipid use. The profile of measured pollutants in plasma was dominated by perfluorooctanesulfonic acid (PFOS, initial relative contribution of 60%). Initial total pollutant concentrations were similar in molting (3.3–5.7 ng g–1 ww) and breeding penguins (range of 4.2–7.3 ng g–1 wet weight, ww). Long-term fasting (25 days) for molting and breeding led, respectively, to a 1.8- and 2.2-fold increase in total plasma pollutant concentrations, although the rate and direction of change were compound-specific. Hexachlorbenzene (HCB) and PFOS concentrations increased in plasma (net mobilization) during both types of fasting, likely due to lipid use. Plasma perfluoroundecanoate (PFUnDA) and perfluorotridecanoate (PFTrDA) concentrations increased in breeders (net mobilization) but decreased in molting individuals (net excretion), suggesting a significant incorporation of these pollutants into feathers. This study is a key contribution to our understanding of pollutant variation in blood during long-term fasting in wildlife.

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Section: Methodsmentioning

confidence: 99%

“…A second group of breeding male penguins (N = 12) was selected based on their courtship song and their renewed plumage. 54,55 Penguins were captured at the periphery of the colony upon their arrival from the ocean. Each group was housed in open wooden pens of 3 × 4 m within 10 m of the colony.…”

Section: Study Site and Bloodmentioning

confidence: 99%

Blood Kinetics of Lipophilic and Proteinophilic Pollutants during Two Types of Long-Term Fast in King Penguins

Mollier,

Bustamante,

Martinez-Alvarez

et al. 2024

Environ. Sci. Technol.

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Mate choice and the major histocompatibility complex: a review

Yan,

Zhang,

Dunn

et al. 2024

Biological Journal of the Linnean Society

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In many vertebrates, individuals choose mates due to benefits accrued via the production of offspring of high genetic quality. Genes of the major histocompatibility complex (MHC), which are associated with individual immunocompetence, provide potential benefits to choosers who mate with individuals that possess specific MHC alleles, have MHC genotypes dissimilar to their own, that are heterozygous for MHC loci, and/or are highly MHC-divergent. We review the evidence of these different modes of MHC mate choice, and the signals by which the MHC status of potential mates is assessed. MHC genes may directly or indirectly regulate individual odours, and thus enable MHC status assessment and mate choice via olfaction. For both visual and auditory signals, however, evidence of an association with MHC genes is relatively weak. Importantly, individual MHC status may be cotransmitted through multiple phenotypes, and different species may focus on different phenotypic signals due to differences in sensory sensitivity. Future research should focus on detecting phenotypic cues (including olfactory, visual, and auditory) that can signal MHC genotypes, as well as on investigating the underlying mechanisms of how MHC genes regulate these signals.

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King penguin ornamentation and acoustics

Kriesell¹,

Aubin²,

Planas‐Bielsa³

et al. 2021

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How king penguins advertise their sexual maturity

Cited by 4 publications

References 98 publications

Blood Kinetics of Lipophilic and Proteinophilic Pollutants during Two Types of Long-Term Fast in King Penguins

Blood Kinetics of Lipophilic and Proteinophilic Pollutants during Two Types of Long-Term Fast in King Penguins

Mate choice and the major histocompatibility complex: a review

King penguin ornamentation and acoustics

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