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Feather content of porphyrins in Eurasian eagle owl(Bubo bubo)fledglings depends on body condition and breeding site quality

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Integrative Zoology 2018年第5期13卷 569-578页

作者： Ismael GALVÁN María del Mar DELGADO Pablo RCAMARERO Rafael MATEO RuiLOURENÇO Vincenzo PENTERIANI Department of Evolutionary Ecology Doñana Biological Station-CSICSevillaSpain Research Unit of Biodiversity-UOCSIC-PA Oviedo UniversityMieresSpain Institute for Game and Wildlife Research IREC-CSIC-UCLM-JCCMCiudad RealSpain Labor-Laboratório de Ornitologia Instituto de Ciências Agrárias e Ambientais MediterrânicasUniversity of EvoraÉvoraPortugal Pyrenean Institute of Ecology(IPE)-CSIC ZaragozaSpain

Porphyrins are pigments produced in most animal cells during the synthesis of heme,but their importance for external coloration is ***(Order Strigiformes)are among the few animals that accumulate porphyrins in the integument,where it could serve as a means of *** we hypothesized that the porphyrin content of feathers may depend on body condition and breeding site quality in Eurasian eagle owl(Bubo bubo)fledglings and,thus,constitute amplifiers of the quality of the area where they are *** high-performance liquid chromatography,we found 2 porphyrins(protoporphyrin IX and coproporphyrin III)in the body feathers of 19 eagle owl fledglings from 7 breeding *** III,but not protoporphyrin IX feather concentration,was positively associated with the body mass of fledglings and with the quality of the breeding sites where they were reared with respect to food quality and *** coproporphyrin III is produced under oxidative stress,we suggest that good breeding sites may lead to fledglings in good ***,in turn,may make fledglings induce a certain level of free radical and coproporphyrin III production to signal to conspecifics their site-mediated capacity to cope with oxidative *** is the first time that porphyrin content in the integument has been found to be related to individual quality,opening a new scenario for studying evolution of animal coloration.

关键词： amplifiers condition-dependence eagle owl fluorescence porphyrins

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The Sound Suppression Characteristics of Wing Feather of owl （Bubo bubo）

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Journal of Bionic Engineering 2012年第2期9卷 192-199页

作者： Kun Chen Qingping Liu Genghua Liao Ying Yang Luquan Ren Hongxiu Yang Xin Chen Key Laboratory of Bionic Engineering （Ministry of Education China） Jilin University Changchun 130022 P. R. China Jilin Provincial Science ＆ Technology Department Changchun 130041 P. R. China Changchun University of Chinese Medicine Changchun 130117 P. R. China

Many species of owls are able to fly noiselessly, and their wing feathers play an important role for the silent flight. In this paper, we studied the sound suppression mechanism of the eagle owl （Bubo bubo） by Stereo Microscope （SM）, Scanning Electron Microscopy （SEM） and Laser Scanning Confocal Microscope （LSCM）. To investigate the effects of special charac- teristics of wing feather on owl silent flight, the acoustic properties, including the sound absorption coefficient and flight noise, were compared between the eagle owl and common buzzard （Buteo buteo）. The results show that the eagle owl generates lower noise than common buzzard during flight, and its wing feather has better sound absorption properties. The leading edge serration and trailing edge fringe can improve the pressure fluctuation of turbulence boundary, and suppress the generation of vortex sound. The elongated distal barbules form a multi-layer grid porous structure which also has an effect on sound absorption. This research not only can give the inspiration for solving the aerodynamic noise of aircraft and engineering machine, but also can provide a new idea for the design of low-noise devices.

关键词： eagle owl wing feather sound suppression microstructure silent flight

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Using bioacoustic tools to clarify species delimitation within the Blakiston's Fish owl(Bubo blakistoni)complex

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Avian Research 2022年第1期13卷 17-24页

作者： Nyanasengeran Movin Tatjana Gamova Sergei G.Surmach Jonathan C.Slaght A.A.Kisleiko James A.Eaton Frank E.Rheindt Department of Biological Sciences National University of Singapore16 Science Drive 4Singapore117558Singapore Federal Scientific Center for Biodiversity of Terrestrial Biota of East Asia FEB RAS.Vladivostok Russia Wildlife Conservation Society 2300 Southern BlvdBronxNYUSA10460 Kurilskii State Nature Reserve Yuzhno-KurilskRussia A-3A-5 Casa Indah ⅠPersiaran Surian47810Petaling JayaMalaysia

Although Blakiston’s Fish owl(Bubo blakistoni) is widely treated as a single species,marked differences in the structure of pair duets between continental and insular populations have been ***,no study has quantitatively assessed these vocal *** obtained 192 duets from 22 pairs of Blakiston’s Fish owl:15 pairs of *** from the Japanese island of Hokkaido and the Russian Kuril island of Kunashir,and seven pairs of *** from Primorye on the Russian *** is a sizeable dataset for such a large,retiring,and rare *** conducted bioacoustic examinations of 14 vocal parameters using principal component analysis and the Isler criterion to quantitatively test species boundaries within the *** *** found that the insular populations on Hokkaido and Kunashir emerged as vocally similar to each other but markedly different from the continental populations of ***,corresponding closely with presently accepted subspecies *** differences in the duets of the insular and continental groups are greater than the pairwise comparisons of territorial vocalisations between other sympatric owl *** on the reproductive importance of vocal duets in owl biology,we propose the taxonomic elevation of the continental subspecies to species level as Northern Fish owl *** study corroborates the importance of bioacoustics in ascertaining species boundaries in owls and has important implications for the management of the two newly delimited species,each likely to be assessed as *** species should be managed independently to optimise conservation outcomes.

关键词： eagle owl Japan Russian Far East Taxonomy Biogeography

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