| dc.contributor.advisor | Šumbera, Radim | |
| dc.contributor.author | Kott, Ondřej | |
| dc.date.accessioned | 2021-12-06T14:17:37Z | |
| dc.date.available | 2021-12-06T14:17:37Z | |
| dc.date.issued | 2015 | |
| dc.date.submitted | 2015-08-20 | |
| dc.identifier.uri | https://dspace.jcu.cz/handle/123456789/24604 | |
| dc.language.iso | cze | |
| dc.publisher | Jihočeská univerzita | cze |
| dc.rights | Bez omezení | |
| dc.title | Zrakové schopnosti podzemních hlodavců | cze |
| dc.title.alternative | Visual capabilities in subterranean rodents | eng |
| dc.type | disertační práce | cze |
| dc.identifier.stag | 13963 | |
| dc.description.abstract-translated | This Ph.D. thesis focuses on the visual capabilities of subterranean
African mole-rats (family Bathyegidae) and a potential role of their
residual vision. We described basic visual capability of light/dark
discrimination and capacity to perceive short to medium-wavelength light
in the photopic range of intensities. Our behavioural findings revealed
severe visual deficits, implying visually guided spatial orientation in molerats
improbable. Our field study demostrated no light-correlated daily
activitivy pattern of mole-rats in the natural habitat. We described very
effective propagation of long wavelength light in breached burrows that
can be detected by mole-rats for long distances, in contary to short
wavelengths with very low propagation. Thus, an unique primary blue
light perception, described only in African mole-rats among all
mammalian species so far, has most probably no adaptive value and might
be only a result of arrested cone development. Mole-rats effectively
localized and plugged with soil illuminated sites under laboratory
conditions, supporting the hypothesis that low acuity residual vision play
an indispensable role in bathyergid anti-predatory behaviour and tunnel
maintanance but not in spatial orientation. | eng |
| dc.date.accepted | 2015-09-23 | |
| dc.description.department | Přírodovědecká fakulta | cze |
| dc.thesis.degree-discipline | Zoologie | cze |
| dc.thesis.degree-grantor | Jihočeská univerzita. Přírodovědecká fakulta | cze |
| dc.thesis.degree-name | Ph.D. | |
| dc.thesis.degree-program | Zoologie | cze |
| dc.description.grade | Dokončená práce s úspěšnou obhajobou | cze |
| dc.contributor.referee | Bendová, Zdeňka | |
| dc.contributor.referee | Landová, Eva | |
