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¿Son los fines de semana estresantes para las aves esteparias ? Respuesta fisiológica de estrés en sisones (Tetrax tetrax) invernantes ante perturbaciones humanas en el centro peninsular

Authors: Tarjuelo, Rocío; Barja, Isabel; Morales, Manuel B.; Traba, Juan; Benítez-López, Ana; Casas, Fabián; Arroyo, Beatriz; +2 Authors

¿Son los fines de semana estresantes para las aves esteparias ? Respuesta fisiológica de estrés en sisones (Tetrax tetrax) invernantes ante perturbaciones humanas en el centro peninsular

Abstract

Los animales pueden percibir a los humanos y a sus actividades como una posible amenaza y activar una respuesta fisiológica de estrés, una respuesta adaptativa que permite a los individuos lidiar con los estímulos estresantes de su entorno. Sin embargo, una exposición continuada a largo plazo ante estas perturbaciones puede conllevar efectos perjudiciales tanto a nivel individual como poblacional. Mediante un diseño semiexperimental, hemos estudiado los efectos de las actividades humanas -con especial énfasis en la actividad cinegética- sobre el estado fisiológico de sisones invernantes en una zona cerealista del centro peninsular. Para ello, se recogieron muestras de heces antes, durante y después del fin de semana durante dos semanas (diciembre 2011-enero 2012) y se midieron los niveles de metabolitos de corticosterona fecal. Además, se realizaron recorridos durante las mismas fechas para estimar la tasa de distintas actividades humanas como la caza, la actividad agraria y otras actividades recreacionales. Se observó un aumento en los niveles fisiológicos de estrés durante el fin de semana, reflejados en unas mayores concentraciones de corticosterona fecal. Además, los niveles de corticosterona fecal estuvieron positivamente asociados con los niveles más altos de perturbaciones relacionadas con la caza. El efecto a largo plazo de la caza, actividad que tiene lugar durante los fines de semana de otoño e invierno, puede tener un impacto negativo sobre las poblaciones invernantes de esta especie amenazada e incluso puede estar contrarrestando medidas de conservación llevadas a cabo tanto a nivel local como en poblaciones reproductoras foráneas, ya que poblaciones reproductoras de Francia migran durante el invierno a regiones del centro peninsular.

Resumen del trabajo presentado al XXII Congreso Español de Ornitología: "Aves y ser humano: una relación variable", celebrado en Madrid del 6 al 9 de diciembre del 2014.

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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