Shepeleva I.P. 2009. [Structure and optical properties of the eye of terrestrial gastropod snail Trichia hispida (Linné, 1758) (Pulmonata: Stylommatophora) from South Sweden] // Invertebrate Zoology. Vol.5 (for 2008). No.2: 173–180 [in Russian, with English summary].
Department of Cell and Organism Biology, Faculty of Science, University of Lund, Helgonavagen 3, S-22362 Lund, Sweden. E-mail: ishepeleva@rambler.ru
doi: 10.15298/invertzool.05.2.06
KEY WORDS: gastropod mollusks, Trichia hispida, eye structure, optical properties.
ABSTRACT: Structure and optical properties of the eye of terrestrial gastropod snail Trichia hispida (Linnй, 1758) from South Sweden were investigated by light microscopy methods. The structure of T. hispida eye is typical camera eye with fixed optics. Eye structure and optical properties differences were revealed between the specimens T. hispida from South Sweden and the specimens of T. hispida from Kaliningrad District previously studied. The eye of T. hispida from South Sweden is adapted to the vision during daylight and twilight hours, whereas the eye of T. hispida from Kaliningrad District functions as an illumination detector only.