espanolDurante dos temporadas consecutivas de caza, desde mayo de 2007 a octubre de 2008, se recogieron traqueas y pulmones de 367 corros cazados en diferentes zonas de Galicia (noroeste de Espana). Se examino macroscopicarnente la superficie externa de pulmon, anotando la localizacion y distribucion de lesiones compatibles con las infecciones causadas por protostrongilidos (Varestrongylus capreoli). Para obtener las larvas de primer estadio (L1) y determinar d numero de L1 por gramo de pulmon (lpg), se procedio a la separacion de las zonas que presentaban lesiones y posteriormente se pesaron y se trocearon y depositaron en un dispositivo de migracion larvaria (Baermann-Wetzel). Ademas, en cada uno de los corzos se midio el perimetro toracico, para utilizarlo como un indicador de la capacidad pulmonar. Teniendo en cuenta la edad de los corzos, se dividieron en dos grupos: jovenes (=3 anos de edad). En d 39,6% de las muestras se hallaron larvas de nematodos broncopulmonares, siendo la prevalencia de infeccion del 33,7% para Varestrongylus capreoli y del 19,2% para Dictyocaulus capreolus. Al relacionar la presencia de infecciones broncopulmonares y la capacidad pulmonar, se constato que el perimetro toracico medio en los animales infectados fue menor que en los corzos no infectados. De estos resultados se concluye que los corzos en Galicia presentan elevada prevalencia de infeccion por nematodos broncopulmones y que la accion patogena de estos parasitos influye negativamente sobre su capacidad pulmonar al reducir visiblemente la superficie de intercambio gaseoso. EnglishDuring two consecutive hunting seasons, May 2007 to October 2008, trachea and lungs of 367 roe deer shot in different areas of Galicia (NW Spain) were collected. Lung surface was carefully examined, and the localization and distribution of lesions possibly caused by Protostrongylidae nematoda (Varestrongylus capreoli) were recorded. Finally, areas with lesions were cut up into small pieces and weighed prior to using the Baermann-Wetzel method to recover first stage larvae (L1) and to assess the number of L1 per gram of lung (lpg). For each roe deer its thoracic perimeter was measured, serving as an indicator of their lung capacity. Taking into account the age, roe deer were divided in two groups: young (=3 years-old). 39.6% of roe deer were positive for bronchopulmonary nematoda larvae, being the prevalence of infection of 33.7% for V. capreoli and 19.2% for Dictyocaulus capreolus. When bronchopulmonary infection and lung capacity were correlated, it was found mar the mean thoracic perimeter in infected animals was lower than in the uninfected ones. In D. capreolus infected roe deer, the thoracic perimeter was lower in both age groups, young (670 mm Vi 681mm) and adult (696 mm vs 719 mm) and the analysis of variance showed that these differences were statistically significant in adult roe deer (F= 5.218, p= 0.023). In animals infected with V. capreoli the thoracic perimeter was lower than in the uninfected ones in both age groups, young (670 mm vs 675) and adults (710 mm vs 717 mm), although these differences were not statistically significant in adult roe deer as above (F= 0.717, p= 00400). From the results of this study, we concluded that roe deer infected by bronchopulmonary nematoda have a smaller thoracic perimeter and this reduction is more intense in roe deer parasitized by D. capreolus.
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