Esparza, M.J. (M. J.)

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    Depredadores de la familia Phytoseiidae sobre ácaro rojo Panonychus ulmi (Koch) en frutales de Navarra
    (Ministerio de Agricultura, Alimentación y Medio Ambiente: Centro de Publicaciones Agrarias, Pesqueras y Alimentarias, 1994) Moraza-Zorrilla, M.L. (Maria Lourdes); Esparza, M.J. (M. J.); Biurrun, R. (Ricardo); Iraola-Calvo, V. M. (V. M.)
    Mites population dinamic of the family Phytoseiidae have been studied for several varieties of apple, pear and peach orchards through the year 1992 in Navarra (Northern Spain). For all the studied varieties, Amblyseius californicus (McGregor) and Euseius stipulatus (Athias-Henriot) are the dominant species. In apple orchards A. californicus is the most frecuent and abundant species (87 %) and in pear and peach orchards both population compositions are quite similar. A. californicus appears first in June and E. stipulatus appears later in the season.