Individual and population-level sex-dependent lateralization in yellow-legged gull (Larus michahellis) chicks

  title={Individual and population-level sex-dependent lateralization in yellow-legged gull (Larus michahellis) chicks},
  author={M. Romano and M. Parolini and M. Caprioli and C. Spiezio and D. Rubolini and N. Saino},
  journal={Behavioural Processes},
Behavioral lateralization at the population level is widespread across vertebrates, with considerable variation among species. However, evidence for individual-level and sex-dependent lateralization is sparse and inconsistent in fish, reptiles and birds. In addition, covariation of lateralization with position in the laying sequence, which is expected because the concentration of maternal egg hormones varies with laying order, has never been investigated. We analyzed lateralization of yellow… Expand
Yolk testosterone affects growth and promotes individual-level consistency in behavioral lateralization of yellow-legged gull chicks
It is shown for the first time in any species an effect of egg T on consistency in lateralization, which may have implications for the evolution of trade-offs in maternal allocation of egg hormones, and the evolutionary interpretations of findings from studies on lateralization among unmanipulated birds are discussed. Expand
Effect of yolk corticosterone on begging in the yellow-legged gull
A maternal effect mediated by corticosterone on a behavioral trait involved in parent‐offspring communication during food provisioning events is shown, investigating mechanisms underlying the development of lateralization. Expand
Melanism is related to behavioural lateralization in nestling barn owls
It was found that the strength of lateralization of preening and scratching was less pronounced in individuals born from heavily spotted mothers, which might be explained by plumage-related variation in the ability to resist stressful rearing conditions. Expand
Behavioural Laterality in two species of flamingos: greater flamingos and Chilean flamingos
Investigation of the presence of lateralized behaviours in zoo flamingos finds group-level right-side preference for foraging in the whole sample as well as within each species, with greater flamingos displaying right preferences to a greater extent than Chilean flamingos. Expand
Courtship lateralization and its effect on mating success of male wild turkeys (Meleagris gallopavo)
It is revealed that population level lateralization does not occur in the courtship of male wild turkeys and individual lateralization, however, was present in the majority of tested males. Expand
Lateralization of complex behaviours in wild greater flamingos
The hypothesis that lateralization manifests in complex behaviours, even in wild animals, is supported through observations of wild individuals 5–37 years old in the greater flamingo, Phoenicopterus roseus. Expand
Variations individuelles des traits reproducteurs chez le flamant rose : de l'appariement à l'envol des jeunes
The role of sex and age on the variability of reproductive traits in a long –lived species is emphasized and the importance to take into account the sex of individuals in the study of reproductive behaviors even for monogamous species where sex roles are poorly differentiated is emphasized. Expand
Contrasting effects of increased yolk testosterone content on development and oxidative status in gull embryos
For the first time in the wild, contrasting T pre-natal effects on body mass and brain size are shown in yellow-legged gulls, suggesting that T may enforce trade-offs between different embryonic traits, but also within the same trait during different developmental periods. Expand
Eye and Ear Preferences


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The observation of an association of offspring sex with temperature during laying is novel for birds and may be mediated by effects on maternal steroid hormones profile, as well as temporal, phenological and ecological factors. Expand
Maternal effects mediated by egg quality in the Yellow-legged Gull Larus michahellis in relation to laying order and embryo sex
The lack of sex-specific egg allocation by mothers may either result from trade-offs between contrasting effects of different egg components on male and female offspring, or indicate that sex- specific traits are controlled primarily by mechanisms of sexual differentiation, including endogenous hormone production or metabolism of exogenous antioxidants, during embryonic development. Expand
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Lateralization is defined as a behavior or mental process displayed by an animal in wh ich there is a distinctive side preference. Caribbean flamingos have been shown to display lateralization inExpand
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We recorded preferential use of the left and right monocular visual field in black-winged stilts, Himantopus himantopus, during predatory pecking and during courtship and mating behaviour in aExpand
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Investigating behavioural laterality in the Australian magpie found that, while the birds did not have a population bias for one antipredator behaviour, there were biases for another (alarm calling); those birds that used their left eye more relative to their right eye gave alarm calls more frequently. Expand
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Behavioural Lateralization in Budgerigars Varies with the Task and the Individual
Investigating behavioral lateralization in 12 male Budgerigars, Melopsittacus undulatus, a social parrot inhabiting the Australian bushlands revealed that the preferred foot used for climbing did not coincide with the foot that was used while landing, suggesting that landing choices are probably not determined by foot bias. Expand
The Evolution of lateralized foot use in parrots : a phylogenetic approach
It is hypothesize that cerebral lateralization may provide a fitness benefit to larger bodied species that extract seeds from seedpods using coordinated foot--beak actions and suggest that laterality in Australian parrots has been shaped by just a few events deep in their evolutionary history. Expand
The development and lateralization of prey delivery in a bill load-holding bird
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Effects of elevated egg corticosterone levels on behavior, growth, and immunity of yellow-legged gull (Larus michahellis) chicks
It is suggested that egg corticosterone can affect the behavior and immunity of offspring in birds and disclose a mechanism mediating early maternal effects whereby stress experienced by females may negatively translate to offspring phenotypic quality. Expand