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‫Écologie des espèces aviaires dans le tissu urbain de la ville de Annaba‬

Abstract : evolution of urbanization should be adjusted with more sustainable development goal, because the protection of biodiversity in urban environments is imperative, but before protecting, it should be characterized. In fact, the majority of people live now in an urban environment, and it is important to study the manner in which birds are able to adapt to this environment. The urban ornithology is a new science in our country: the first works began in Eastern Europe in the 70’s. An inventory of birds was made using technique of listening points (P.A.I). We made two surveys, the first one after the nesting period, and the second one in the nesting period, in many observation sites, mostly located in the green areas of the city. Each survey lasts approximately10 minutes and is to note all doves’ individuals seen or heard. We divided the town into squares of 100m side. Without any surprise the most found species are the collared dove (Streptopelia decaocto) with 6326 individuals and the feral pigeon (Columba livia) with 4508 individuals. We noticed that the difference of density between seasons is much greater in rual and intermediate than in ubran habitats. We Have Submitted several Individuals of the collared dove (Streptopelia decaocto) and the feral pigeon (Columba livia) to morphometric parameters tests, and the results shown us that there is no significant differences in morphological parameters , has encountered between individuals of urban and intermediate sites. It tend to comfort us in our hypothesis of a homogenous population, and the role of urbanization. In terms of the melanin coloring of the Feral Pigeon (Columba livia), we took wings pictures of each individual and through which we were able to recover the percentage (%) of black color for each individuals. We noticed the absence of white and black individuals that is to say that all the pigeons was between 10% and 90 % (respectively Blue bar, Chequer & T-pattern). Blood smears were performed on thirty Feral Pigeon (Columba livia) individuals to make a hematological study that demonstrated the presence of a large number of parasites and a balanced percentage of granulocytes (18%) and monocytes (8%).
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Submitted on : Wednesday, November 4, 2020 - 7:41:57 PM
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Hani Amir Aouissi. ‫Écologie des espèces aviaires dans le tissu urbain de la ville de Annaba‬. Biodiversité et Ecologie. Université Badji-Mokhtar Annaba, 2016. Français. ⟨tel-02986324⟩

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