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Accueil du site → Doctorat → Allemagne → Polarized light vision in the eye of the desert locust, Schistocerca gregaria - An electrophysiological and histological approach

Philipps-Universität Marburg (2015)

Polarized light vision in the eye of the desert locust, Schistocerca gregaria - An electrophysiological and histological approach

Schmeling, Fabian

Titre : Polarized light vision in the eye of the desert locust, Schistocerca gregaria - An electrophysiological and histological approach

Auteur : Schmeling, Fabian

Université de soutenance : Philipps-Universität Marburg

Grade : Doctor of Philosophy (PhD) 2015

Description
Several studies strongly imply that the desert locust (Schistocerca gregaria) is able to use polarized light patterns in the sky for orientation tasks. A specialized region in its compound eye (DRA) contains photoreceptor cells which are morphologically adapted for the detection of polarized light. This work focuses on the physiological and morphological examination of photoreceptor cells inside and outside the DRA. By applying electrophysiological methods it was tested for spectral, absolute, polarization and angular sensitivity of receptor cells by using electrophysiological methods. Tracer injections revealed projection patterns of the respective cells. In addition data of the solitarious and gregarious phase of the desert locusts were compared.

Mots clés : Orientierung ; Wüstenheuschrecke ; dorsal rim area , electrophysiology ; axon ; polarisiertes Licht ; dorsale Randregion ; Komplexauge , Photorezeptor ; Elektrophysiologie ; Axon ; Life sciences

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Page publiée le 24 janvier 2016, mise à jour le 5 janvier 2019