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Does melanin-based plumage coloration reflect health status of free-living birds in urban environments?

Avian Research 2021年第4期12卷 553-568页

作者： Hani Amir Aouissi Mostefa Ababsa Aissam Gaagai Zihad Bouslama Yassine Farhi Haroun Chenchouni Scientific and Technical Research Center on Arid Regions(CRSTRA) 07000 BiskraAlgeria Faculty of Sciences Department of BiologyBadji-Mokhtar Annaba University23000 AnnabaAlgeria Environmental Research Center(CRE) Badji-Mokhtar Annaba University23000 AnnabaAlgeria Department of Nature and Life Sciences Faculty of Exact Sciences and Nature and Life SciencesUniversity of Larbi Tebessi12002 TebessaAlgeria Labora-tory of Natural Resources and Management of Sensitive Environments‘RNAMS’ University of Larbi Ben M’hidi04000 Oum-El-BouaghiAlgeria

Background:Ecological functions and processes in urban ecosystems are governed by various human ***-adapted and city-exploiting animal species are expected to present certain specific behavioral and physiological traits in comparison to city-avoiders or conspecific individual frequenting less urbanized or rural environments.A trait of high importance,the plumage color polymorphism has been selected as the main study model and was correlated with different morphological and physiological parameters to highlight its importance in determining the possible health status of urban feral Pigeons(Columba livia)in North African urban ***:Different body morphometrics,hematological and hemoparasitic parameters were quantified on freeliving feral Pigeons in urban environments of northern ***,plumage melanin-based coloration(MBC)was measured and the data collected at the individual scale was correlated with the previous parameters using linear and non-linear modeling ***:Plumage MBC scores of the sampled feral Pigeons ranged between 0.3%and 74.8%.Among the 12 morphological traits measured,body weight,tail length and total length were deemed to be positively correlated with *** morphs appeared to have more hemoparasites compared to lighter *** the same observation goes with the immunity but with non-linear *** number of monocytes and granulocytes increased with the increase in MBC levels in lighter morphs,while pigeons with high MBC scores exhibited negative relationships between MBC levels and the number of white blood ***:Despite the existence of a number of studies demonstrating phenotypic directional selection,further studies are undoubtedly necessary to understand in detail the underlying mechanisms in species life-history strategies between differently colored *** of this correlative study open exciting perspectives revealing that MBC can be considered a good indicato

关键词： Columba livia Feather color polymorphism feral birds Hematological indicators Hemoparasitism Immune ecophysiology Urbanization Urban ornithology

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