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Adaptation or ecological trap? Altered nest-site selection by Reed Parrotbills after an extreme flood

Avian Research 2019年第1期10卷 13-20页

作者： Laikun Ma Jianwei Zhang Jianping Liu Canchao Yang Wei Liang Anders Pape M?ller Ministry of Education Key Laboratory for Ecology of Tropical Islands College of Life SciencesHainan Normal University Department of Biology and Food Science Hebei Normal University for Nationalities Ecologie Systématique Evolution Université Paris-SudCNRSAgroParisTechUniversité Paris-Saclay

Background:Floods and other extreme events have disastrous effects on wetland breeding ***,such events and their consequences are difficult to study due to their rarity and unpredictable ***:Here we compared nest-sites chosen by Reed Parrotbills(Paradoxornis heudei) during June-August 2016 in Yongnianwa Wetlands,Hebei Province,China,before and after an extreme flooding ***:Twenty-three nests were identified before and 13 new nests after the *** was no significant difference in most nest-site characteristics,such as distance from the road,height of the reeds in which nests were built,or nest volume before or after the ***,nests after the flood were located significantly higher in the vegetation compared to before the flood(mean ± SE:1.17 ± 0.13 m vs.0.75 ± 0.26 m,p nest-site ***,they appeared to increase the height of their nests in response to the drastically changing water levels in reed wetlands,to reduce the likelihood that their nests would be submerged again by ***,predation rate also increased significantly after the flood,suggesting that the change in nest height to combat the threat of flooding made the nests more susceptible to other threats,such as ***' response to rare climatic events,such as flooding,may produce ecological traps if they make the animals more susceptible to other kinds of threats they are more likely to continue to encounter.

关键词： Ecological trap Floods nest-site selection Paradoxornis heudei Phenotypic plasticity

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Home,dirty home:effect of old nest material on nest-site selection and breeding performance in a cavity-nesting raptor

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Current Zoology 2018年第6期64卷 693-702页

作者： Stefano PODOFILLINI Jacopo G.CECERE Matteo GRIGGIO Andrea CURCIO Enrico L DE CAPUA Egidio FULCO Simone PIRRELLO Nicola SAINO Lorenzo SERRA Matteo VISCEGLIA Diego RUBOLINI Dipartimento di Scienze e Politiche Ambientali Universita degli Studi di Milanovia Celoria 26MilanoI-20133Italy Istituto Superiore per la Protezione e la Ricerca Ambientale (ISPRA) Ozzano Emilia (BO)Italy Dipartimento di Biologia Universita degli Studi di PadovaItaly Provincia di Matera -Parco della Murgia Materana Italy Studio Naturalistico Milvus Pignola (PZ)Italy De Rerum Natura Montescaglioso (MT)Italy

The quality of a breeding site may have major fitness consequences.A fundamental step to understanding the process of nest-site selection is the identification of the information individuals use to choose high-quality nest *** secondary cavity-nesting bird species that do not add nest lining material,organic remains (faeces,pellets)accumulated inside nest cavities during previous breeding events may be a cue for high-quality nest-sites,as they contain information about past successful breeding and may improve thermal insulation of eggs during ***,cavities in which breeding was successful might also contain more nest-dwelling ectoparasites than unoccupied cavities, offering an incentive for prospective parents to avoid *** exposed breeding cavity-nesting lesser kestrels (Falco naumanni)to nestbox dyads consisting of a dirty (with a thick layer of organic substrate) and a clean nestbox (without organic material).Dirty nestboxes were strongly preferred,being occupied earlier and more frequently than clean *** success in dirty nestboxes was significantly higher than in clean ones,suggesting a positive effect of organic nest material on incubation efficiency, while nestbox dirtiness did not significantly affect clutch and brood *** from dirty nestboxes had significantly higher ectoparasite load than those from clean nestboxes soon after egg hatching,but this difference was not evident a few days *** substrate did not significantly affect nestling *** concluded that nest substrate is a key driver of nest-site choice in lesser kestrels,although the adaptive value of such a strong preference appears elusive and may be context-dependent.

关键词： Camus hemapterus ectoparasites nestbex nest substrate nest-site selection

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