Ara mostrant els elements 1-20 de 87

    Miniatura

    Cuándo viene el público al museo: ¿cuando quiere o cuando queremos? 

    Garcia-Franquesa, Eulàlia; Piqué, Josep; Senar, Juan Carlos (1991)

    El objectivo de este estudio es evaluar la afluencia de visitantes que acuden al Museo de Zooología e Barcelona, intentando conocer: 1. Si existe algun tipo de dinámica en la afluencia del público individual 2. Si la ...

    Miniatura

    Antipredator behavioural compensation of proactive personality trait in male Eurasian siskins 

    Pascual, Jordi; Senar, Juan Carlos (2014-04)

    Many animals show behavioural syndromes (i.e. suites of correlated behaviours across multiple situations). These behavioural correlations, however, imply limitations in the behavioural plasticity of individuals when facing ...

    Miniatura

    Selection based on the size of the black tie of the great tit may be reversed in urban habitats 

    Senar, Juan Carlos; Conroy, Michael J.; Quesada, Javier; Mateos González, Fernando (2014-06-07)

    A standard approach to model how selection shapes phenotypic traits is the analysis of capture–recapture data relating trait variation to survival. Divergent selection, however, has never been analyzed by the capture–recapture ...

    Reducing the availability of food to control feral pigeons: changes in population size and composition 

    Senar, Juan Carlos; Pascual, Jordi; Peracho, Victor (2016-03-07)

    BACKGROUND: As feeding by humans is one of the main food resources to pigeons (Columba livia), there is general agreement that public education that aims to reduce the food base may be the most feasible way to reduce ...

    Miniatura

    Personality and urbanization: behavioural traits and DRD4 SNP830 polymorphisms in great tits in Barcelona city 

    Riyahi, Sepand; Björklund, Mats; Senar, Juan Carlos (2016-10-03)

    Most examples of adaptation to the urban environment relate to plasticity processes rather than to natural selection. Personality, however, defined as consistent individual differences in behaviour related to ...

    The diet of great tit nestlings: comparing observation records and stable isotope analyses 

    Pagani-Núnez, Emilio; Renom, María; Mateos-Gonzalez, Fernando; Senar, Juan Carlos (2016-12-13)

    The diet of wild animals has been studied using many different strategies, approaches and methods in recent decades. In this regard, stable isotopes analysis (SIA) is becoming a widespread tool, but no study has yet, to ...

    Miniatura

    Natural epigenetic variation within and among six subspecies of the house sparrow, Passer domesticus 

    Riyahi, Sepand; Vilatersana, Roser; Schrey, Aaron W.; Node, Hassan Ghorbani; Aliabadian, Mansour; Senar, Juan Carlos (2017)

    Epigenetic modifications can respond rapidly to environmental changes and can shape phenotypic variation in accordance with environmental stimuli. One of the most studied epigenetic marks is DNA methylation. In the present ...

    Assessing the assessments: evaluation of four impact assessment protocols for invasive alien species 

    Turbé, Anne; Senar, Juan Carlos; Shwartz, Assaf (2017)

    ABSTRACTAimEffective policy and management responses to the multiple threats posedby invasive alien species (IAS) rely on the ability to assess their impacts beforeconclusive empirical evidence is available. A plethora of ...

    Miniatura

    En memòria de Roser Nos: una breu història d’algú que va estimar i potenciar l’ornitologia 

    Uribe, Francesc; Senar, Juan Carlos; Jordà-Sanuy, Cristòfol (2018)

    Roser Nos ens ha deixat un rastre poc ortodox de complicitat amb l’ornitologia. Una cerca a les xarxes web no serviria per dimensionar correctament l’impacte que va tenir sobre l’estudi dels ocells. Aquesta breu semblança ...

    Miniatura

    Age and sex differences in niche use at molt and its effect on plumage coloration characteristics in a bird 

    Pagani-Núnez, Emilio; Barnett, Craig R. A.; Senar, Juan Carlos (2018-07-27)

    Bird plumage is often very colorful and can communicate the quality of the bearer to conspecifics. These plumage-based signals of quality are composed of multiple pigments (e.g., melanin and carotenoids). Therefore, sex ...

    Ectoparasite sharing among native and invasive birds in a metropolitan area 

    Mori, Emilano; Pascual Sala, Jordi; Senar, Juan Carlos (2018-12-18)

    Parasite-mediated competition has been reported to be one of the most harmful, although overlooked, impacts that alien species have on native ecosystems. Monk parakeets Myiopsitta monachus are successful invaders in Europe, ...

    Miniatura

    45 anys d’ornitologia de muntanya i el Grup Bages d’Anellament 

    Borràs, Antoni; Senar, Juan Carlos (2019)

    En aquest article s’aporten dades històriques sobre l’origen i el tarannà del Grup Bages d’Anellament (GBA) i del paper que aquest ha jugat en l’estudi de l’ornitologia de muntanya. Alhora, completa alguns aspectes sobre ...

    Miniatura

    Prevalence of sensitization to avian or fungal proteins in different work environments 

    Sánchez-Díez, Silvia; Senar, Juan Carlos; Muñoz, Xavier (2019)

    Hypersensitivity pneumonitis (HP) is usually caused by the inhalation of avian and fungal proteins. The present study assesses a cohort of Urban Pest Surveillance and Control Service (UPSCS) workers with high exposure to ...

    Miniatura

    La llucareta i els pins: els anys de gran productivitat de la pinassa com a oportunitat per a una reproducció extemporània 

    Borràs, Antoni; Senar, Juan Carlos; Cabrera, Josep; Colomé, Xavier; Cabrera, Toni; Molina, Josep; Serrasolsas, Carles (2019)

    Aquest article, a més de mostrar la importància dels pins en el cicle biològic de la llucareta Carduelis citrinella, té com objectiu posar en relleu el paper que té la pinassa Pinus nigra en la hivernada de l’espècie i en ...

    Miniatura

    Història de l'activitat naturalista 

    Marsalles, Ramon Maria; Jordà-Sanuy, Cristòfol; Soriano, Ignasi; Valverde Martínez, Andrés (2019-02)

    Miniatura

    Estimating age‐dependent survival when juveniles resemble females: invasive ring‐necked parakeets as an example 

    Senar, Juan Carlos; Arroyo, Lluïsa; Ortega-Segalerva, Alba; Carrillo-Ortiz, José; Tomàs, Xavier; Montalvo, Tomás; Sanz-Aguilar, Ana (2019-02-05)

    Many species only show sexual dimorphism at the age of maturity, such that juveniles typically resemble females. Under these circumstances, estimating accurate age‐specific demographic parameters is challenging. Here, we ...

    Mediterranean versus Atlantic monk parakeets Myiopsitta monachus: towards differentiated management at the European scale 

    Postigo, Jose-Luis; Strubbe, Diederik; Senar, Juan Carlos (2019-02-19)

    BACKGROUND: The monk parakeet Myiopsitta monachus (Boddaert), native to South America, is an invasive species in several European countries, causing crop damage and potential negative impacts on wildlife. Only Spain and ...

    Miniatura

    The reproductive capacity of Monk Parakeets Myiopsitta monachus is higher in their invasive range 

    Senar, Juan Carlos; Carrillo-Ortiz, José; Ortega-Segalerva, Alba; Arroyo, Lluïsa; Mazzoni, Daniele; Hatchwell, B. J. (2019-03-14)

    Breeding parameters for Monk Parakeets Myiopsitta monachus nesting in Barcelona, Spain, were collected for 651 nests over five breeding seasons. This invasive population has a high reproductive capacity compared with the ...

    Miniatura

    Adaptive responses of animals to climate change are most likely insufficient 

    Radchuk, Viktoriia; Reed, Thomas; Borràs, Antoni; Senar, Juan Carlos; Kramer-Schadt, Stephanie (2019-07-23)

    Biological responses to climate change have been widely documented across taxa and regions, but it remains unclear whether species are maintaining a good match between phenotype and environment, i.e. whether observed trait ...

    Miniatura

    Beak morphology predicts apparent survival of crossbills: due to selective survival or selective dispersal? 

    Gómez-Blanco, David; Santoro, Simone; Borràs, Antoni; Cabrera, Josep; Senar, Juan Carlos; Edelaar, Pim (2019-10-21)

    Dozens of morphologically differentiated populations, subspecies and species of crossbills (genus Loxia) exist. It has been suggested that this divergence is due to variation in the conifer cones that each population ...