منابع مشابه
Circular Polarization Vision in a Stomatopod Crustacean
We describe the addition of a fourth visual modality in the animal kingdom, the perception of circular polarized light. Animals are sensitive to various characteristics of light, such as intensity, color, and linear polarization [1, 2]. This latter capability can be used for object identification, contrast enhancement, navigation, and communication through polarizing reflections [2-4]. Circular...
متن کاملA shape-anisotropic reflective polarizer in a stomatopod crustacean
Many biophotonic structures have their spectral properties of reflection 'tuned' using the (zeroth-order) Bragg criteria for phase constructive interference. This is associated with a periodicity, or distribution of periodicities, parallel to the direction of illumination. The polarization properties of these reflections are, however, typically constrained by the dimensional symmetry and intrin...
متن کاملEvidence for Granulolysis in the Retinula Cells of a Stomatopod Crustacean, Squilla Mantis
In different endocrine cells of the rat, Smith and interpreted as a cellular mechanism for disposing Farquhar (1) and Orci et al . (2) described the inof excess secretory product under certain expericorporation of secretory granules within lysosomal mental (1) or metabolic conditions (2, 3). Granubodies. This process, called granulolysis (2) or lolysis, at a low rate, is also present under norm...
متن کاملPhotoreception in the planktonic larvae of two species of pullosquilla, a lysiosquilloid stomatopod crustacean
Optical microscopy, electron microscopy and microspectrophotometry were used to characterize pigments in the eyes of planktonic larvae of two species of the lysiosquilloid stomatopod Pullosquilla, P. litoralis and P. thomassini, which live sympatrically in French Polynesia. In contrast to the adult retina, which contains a diverse assortment of visual pigments in the main rhabdoms, the principa...
متن کاملThe independence of eye movements in a stomatopod crustacean is task dependent
Stomatopods have an extraordinary visual system, incorporating independent movement of their eyes in all three degrees of rotational freedom. In this work, we demonstrate that in the peacock mantis shrimp, Odontodactylus scyllarus, the level of ocular independence is task dependent. During gaze stabilization in the context of optokinesis, there is weak but significant correlation between the le...
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ژورنال
عنوان ژورنال: Revue suisse de zoologie.
سال: 1974
ISSN: 0035-418X
DOI: 10.5962/bhl.part.75990