Graellsia, Vol 66, No 1 (2010)

La comunidad de ácaros Mesostigmata (Acari, Mesostigmata) en el dosel arbóreo de bosques de pícea en Irlanda en comparación con la presente en hábitats muscícolas edáficos

J. Arroyo
School of Biology and Environmental Science, Science Centre West, University College Dublin, Irlanda

M. L. Moraza
Departamento de Zoología y Ecología, Facultad de Ciencias, Universidad de Navarra, España

T. Bolger
School of Biology and Environmental Science, Science Centre West, University College Dublin, Irlanda


El objetivo principal de este trabajo fue estudiar en Irlanda las comunidades de ácaros Mesostigmata del dosel arbóreo de bosques de Picea sitchensis y en el musgo desarrollado tanto en zonas aéreas como en la superficie edáfica, con el fin de determinar si la estructura y composición de éstas comunidades variaba entre los hábitats diferenciales (edáficos vs. aéreos). Se obtuvieron 22 especies de ácaros Mesostigmata, de las cuales 5 aparecieron solamente en micro-hábitats arbóreos. Las especies de la familia Zerconidae recogidas en este estudio se encontraron exclusivamente en ramas y musgos desarrollados en el dosel. Trachytes aegrota (C.L. Koch, 1841), es citado por primera vez para Irlanda. Se ofrecen asimismo comentarios sobre la distribución de esta especie. El análisis multivariante de los resultados indicó que las poblaciones arbóreas de ácaros Mesostigmata no son un mero subconjunto estructural sino que forman una comunidad diferencial respecto a las presentes en hábitats muscícolas del tronco o del medio edáfico, y son más homogéneas que las existentes en la superficie del suelo.

Palabras clave

Acaros; Mesostigmata; dosel; ácaros arbóreos; Picea; Irlanda

Texto completo:



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