Sun compass orientation of Tylos europaeus (Crustacea, Isopoda) under artificial light
Anno: 2004
Autori: Ugolini A., Castellini C.
Affiliazione autori: Univ Florence, Dipartimento di Biologia Animale e Genetica, Università di Firenze, Firenze, Italy;
Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy
Abstract: To provide a first assessment of the parameters used by adult individuals of the supralittoral isopod Tylos europaeus to recognize the sun as a compass orienting reference, we used the apparatus designed and tested with the amphipod T. saltator. The apparatus reproduces a scenario similar to the natural one (with a false sun and sky illuminated artificially). The scenario produced inside the apparatus is sufficient to induce the isopods to exhibit solar orientation similar to that of conspecifics tested under the natural sun and sky. Nevertheless, this ability depends on some threshold values of illumination of the artificial sun and sky: to obtain a good orientation the irradiance of the artificial sun and sky should be more than 0.4 and 1.3 muW/cm(2) respectively. When the artificial sky is not illuminated, the individuals show only a photopositive tendency.
Giornale/Rivista: ETHOLOGY
Volume: 110 (8) Da Pagina: 581 A: 590
Parole chiavi: TALITRUS-SALTATOR; CELESTIAL ORIENTATION; AMPHIPODADOI: 10.1111/j.1439-0310.2004.00997.xCitazioni: 2dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui