Beiträge von hollander

Hallo,

Ich warte interessier in den Frage was Gottesanbeterins sehen konnen. Einige Insekten konnen viele lichtspectrum sehen.

I warte interessiert in diese Frage, da Gottesanbeterin mit licht warme konnen. Konnen diese Tieren infrarot licht sehen? Uv? Und welche Farben? Wie weit kann es sehen? etc.

Nach einigen googeln fand ich ein interessantes Forschung(?) aus 1970 mit einige Antworten fur Tenodera sinensis (http://www.ncbi.nlm.nih.gov/pm…les/PMC2203092/pdf/93.pdf).

Ich zitiere einen teil der Ergebnis der Forschung:
"In this study, the spectral sensitivity of the dorsal ocellus was determined under the influence of constant fatiguing illumination of near ultraviolet and yellow light. Adaptation with near-ultraviolet adapting light (346.5 nm) reduced the sensitivity about equally throughout the spectrum which re- vealed no selective suppression of sensitivity in any part of the spectrum (Fig. 2). Yellow light (577 nm) adaptation, however, enhanced the near-ultra- violet maximum at 370 nm relative to the 510 nm maximum in some man- tids (Fig. 2). Yellow light is absorbed more efficiently by the receptor respon- sible for the green sensitivity than by receptor(s) with maximum sensitivity at shorter wavelengths. This differentially suppresses the sensitivity of the "green" receptor and reveals a receptor type whose maximum sensitivity lies in the near-ultraviolet. The results are not consistent from mantis to mantis
(Fig. 2). In some mantids, yellow light adaptation (574 nm) only slightly enhanced the near-ultraviolet sensitivity relative to the 510 nm maximum. In other mantids (577 nm light adaptation) the change was considerably greater. This variation in near-ultraviolet sensitivity is most perplexing and extremely difficult to explain.
The results of the selective light adaptation studies suggest that there is more than one type of receptor in the ocellus which contributes to the spectral sensitivity function. One receptor type is maximally sensitive to light of 370 nm. A second receptor type is maximally sensitive to light of 510 nm with some sensitivity in the near-ultraviolet. The inability to selectively change the sensitivity function with near-ultraviolet adaptation may be explained by the absorption of near-ultraviolet light by at least two receptor types. Similar results have been reported for the ocelli of other arthropods. Goldsmith and Ruck (1958) reported that the bee ocellus possesses receptors sensitive to ultra- violet illumination. Lall and Chapman (1964) also reported an UV receptor for the ocellus of the horseshoe crab, Limulus. Lall and Chapman were, how- ever, able to suppress the near-ultraviolet maximum in the Limulus median ocellus with an ultraviolet adapting light."

(nm = NanoMeters)

[url]http://www.perret-optic.ch/optometrie/Vision_des_couleurs/Vis_couleur_images/spectre-electromagnetique.jpg[/url]

Ich bin mir nicht sicher, ob man das Bild so einfügen darf. Ich habe es durch einen Link zum Bild ersetzt.