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Tribolium confusum

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Received: 28 October 2012; Accepted: 10 December 2012

Τοξικότητα των ατμών έξι αιθέριων ελαίων σε ανήλικα και

ενήλικα άτομα του είδους

Tribolium confusum

Γ. Θέου, Δ.Π. Παπαχρήστος και Δ.Κ. Σταμόπουλος

Περίληψη

Προσδιορίστηκε η τοξικότητα των ατμών έξι αιθέριων ελαίων (

Lavandula hybrida

,

Laurus

nobilis

,

Thuja orientalis

,

Citrus sinensis

,

Citrus limon

, και

Origanum vulgare

) σε προνύμφες, νύμφες και

ενήλικα του είδους

Tribolium confusum.

Τα αποτελέσματα έδειξαν ότι όλα τα αιθέρια έλαια, με εξαίρεση

αυτό του είδους

O. vulgare

, ήταν τοξικά για όλα τα στάδια ανάπτυξης του εντόμου. Τη μεγαλύτερη ευ-

πάθεια στα αιθέρια έλαια εμφάνισαν οι προνύμφες ηλικίας 10 ημερών ενώ την μικρότερη οι προνύμφες

ηλικίας 25 και 31 ημερών. Οι τιμές των μέσων θανατηφόρων δόσεων (LC

50

) κυμάνθηκαν από 1,8 έως

109 μl αιθέριου ελαίου ανά l αέρα ανάλογα με το στάδιο ανάπτυξης του εντόμου και το είδος του αιθέ-

ριου ελαίου. Η έκθεση των νυμφών στους ατμούς των αιθέριων ελαίων προκάλεσε αναστολή της μορ-

φογένεσης και της εμφάνισης φυσιολογικών ενηλίκων εντόμων.

Hellenic Plant Protection Journal

6:

29-39, 2013