1976
DOI: 10.4267/2042/21073
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A propos d'une infestation des hêtres en Bretagne par l'Orchestes fagi lL. (Coléoptère curculionide)

Abstract: Class . Oxford 453 : 174 FAG USOrchestes fagi est une espèce constante dans tous les massifs de hêtre de l'Europe . Le charançon, spécifique de cette essence, pullule certaines années ou en certains points dans des conditions qui n'ont jamais été déterminées, compte tenu du fait que la lutte contre cette espèce ne peut apparaître rentable en forêt tant que ne sera pas chiffré le dommage résultant de ses proliférations plus ou moins importantes . L'application apparaît elle-même difficile en raison de la présen… Show more

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“…prior to shifting to their primary host, European beech ( Fagus sylvatica L.), to feed and lay eggs on young developing beech leaves (Bale, ). The larvae (hereafter the ‘offspring generation’) hatch soon after and mine the leaves for three instars, emerging as adults around mid‐June to feed on the leaves of raspberry and other crop species such as apple or cherry (Theobald, ; Chauvin et al ., ; Bale & Luff, ), before settling into the cracks, crevices, leaf litter, and moss layer of surrounding woody vegetation to overwinter (Nielsen, ; A. Morrison, unpublished). Whereas the immature stages are constrained to feeding only on beech, the adults are polyphagous and may feed on as many as 14 plant species (Table ), although beech is typically preferred (Bale & Luff, ).…”
Section: Introductionmentioning
confidence: 99%
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“…prior to shifting to their primary host, European beech ( Fagus sylvatica L.), to feed and lay eggs on young developing beech leaves (Bale, ). The larvae (hereafter the ‘offspring generation’) hatch soon after and mine the leaves for three instars, emerging as adults around mid‐June to feed on the leaves of raspberry and other crop species such as apple or cherry (Theobald, ; Chauvin et al ., ; Bale & Luff, ), before settling into the cracks, crevices, leaf litter, and moss layer of surrounding woody vegetation to overwinter (Nielsen, ; A. Morrison, unpublished). Whereas the immature stages are constrained to feeding only on beech, the adults are polyphagous and may feed on as many as 14 plant species (Table ), although beech is typically preferred (Bale & Luff, ).…”
Section: Introductionmentioning
confidence: 99%
“…prior to shifting to their primary host, European beech (Fagus sylvatica L.), to feed and lay eggs on young developing beech leaves (Bale, 1981). The larvae (hereafter the 'offspring generation') hatch soon after and mine the leaves for three instars, emerging as adults around mid-June to feed on the leaves of raspberry and other crop species such as apple or cherry (Theobald, 1924;Chauvin et al, 1976;Bale & Luff, 1978), before settling into the cracks, crevices, leaf litter, and moss layer of surrounding Prunus sp. Chauvin et al (1976) woody vegetation to overwinter (Nielsen, 1970;A.…”
Section: Introductionmentioning
confidence: 99%