Artrópodos parásitos asociados a carpóforos del género Tuber
Castel Duaso, Lourdes
Barriuso Vargas, Juan (dir.) ; Martín Santafé, María (dir.)
Aibar Lete, Joaquín (ponente)
Universidad de Zaragoza,
Escuela Politécnica Superior (Huesca),
Agricultura y Economia Agraria department, Producción Vegetal area
Ingeniero Técnico Agrícola (Explotaciones Agropecuarias)
Free keyword(s): parásitos ; tuber ; tuber aestivum ; tuber melanosporum ; tuber brumale ; artrópodos
Tipo de Trabajo Académico: Proyecto Fin de Carrera
Note: In recent years the production of wild truffles has dropped alarmingly, and at the moment not even the establishment of a large number of trees plantations of the gender Quercus mycorrhizal whith this fungus have achieved that date back production. Moreover we find that the quality is seriously influenced by the presence of arthropod parasites. Not much information is had of the major diseases which affect the truffle or how to control it. In this research we have studied arthropod populations present in the most economically important species in Spain different samples of summer truffle (Tuber aestivum), black truffle (Tuber melanosporum) and Tuber brumale, in order to identify and assess the degree of parasitism of the species they affect. 5 different species have been found: Leiodes cinnamomea, Ommatoilus sabulosus, Megaselia sp, Lycoriella sp and Helomyza tuberivora. Of these last 3 it has been managed to reproduce their entire life cycle of Tuber and Pleurotus ostreatus. Ommatoilus sabulosus, Megaselia sp. and Lycoriella. are new records in terms of parasitism associated with sporocarps of the gender Tuber. The dipterans Megaselia sp, Lycoriella Sp. and Helomyza tuberivora are pests that cause severe losses in the product quality, but they also help the fungus to spread its spores, along with they are indicators of its presence in the truffle tree burning. The presence of Ommatoiulus sabulosusis associated as a secondary pest, because that parasitizes T. melanosporum when it is mature, using pre-built galleries formerly made by- other parasites, causing serious drillings that devalue economically and the quality of-the product. It has been found that, unlike other published studies in relation to Leiodes cinnamomea beetle, larvae are parasites of both, T. aestivum and T. melanosporum. This is a difference with adults witch only appear in T. melanosporum, causing both (larvae and adult) severe damage to the fruiting bodies. The results obtained are intended to bring some light to the parasitism associated with the gender Tuber fruiting bodies to establish in future studies, possible strategies of controlling these arthropods in the truffle, thus avoiding losses in both economic and in the so appreciated quality of the product.
Registrado por la Universidad de Zaragoza bajo la licencia Creative Commons.
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