Επίπεδο εγγραφής:	Έργο ολοκληρωμένο
Χρονολογία:	2000
Θέμα:	Forest entomology Δασική εντομολογία
Δημιουργός:	Πετράκης, Πάνος
Τίτλος:	Larval performance in relation to oviposition site preference in olive kernel moth (Prays oleae Bern., Yponomeutidae, Praydina)
Γλώσσα:	Αγγλικά
Λέξεις-Κλειδιά:	Olea europaea; Prays oleae Bern.; Insects; Εντομα
Περίληψη:	1 The tri-voltine moth Prays oleae Bern. spends its larval stages on the native olive tree (Olea europaea L. var. sylvestris Brot. and ®ve cultivars, Oleaceae) mining the leaves, the ¯owers and the fruits in each generation; it seldom switches to other native or introduced confamilial plant species. 2 In this study the pattern of oviposition of the olive moth was examined in olive ®elds and natural vegetation, in relation to in situ recruitment as an outcome of processes such as density dependence or risk spreading. 3 Larval body size (width of epicranial sclerites) was also examined and compared between host substrates, years and morphological, physiological, ecological and nutritional attributes of the host. 4 The factors in¯uencing the oviposition pattern of the olive moth such as the carbon/ nitrogen ratio, number of ¯owers, branch length and previous leaf damage were ranked differently in different cultivars. 5 `Hot spots', i.e. olive trees or parts of trees receiving a high egg load, were found to be the result of in situ recruitment. 6 Physiological mortality among ®rst instar larvae was signi®cantly negatively correlated with the number of oviposited upon leaves; suggesting that the adult selects for oviposition the best available substrate. 7 As adult moths selected leaves with minimal probability of abscission for oviposition, leaf abscission was not a major mortality factor, although ®rst instar larvae reduced leaf longevity. 8 Host quality did not affect all larval stages in the same way. 9 The more nutritionally poor the substrate, the longer the duration of the larval stage feeding on it. The phenological timing of the insect life stages very closely tracks the phenological phases of its host plant, primarily focusing on the most nutritious host stage in terms of larval performance.
Εξειδίκευση τύπου :	Άρθρο
Τίτλος περιέχουσας πηγής:	Agricultural and Forest Entomology
Άδεια χρήσης:	Αναφορά Παρόμοια Διανομή
Διάθεση ψηφιακού τεκμηρίου:	Δεν διατίθεται
Αρίθμηση περιέχουσας πηγής:	vol.2
Σελίδες περιέχουσας πηγής:	pp. 271±282
Εμφανίζεται στις Ομάδες Τεκμηρίων:	5.1.2. Δασική Εντομολογία

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