izpis_h1_title_alt

Horsefly object-directed polarotaxis is mediated by a stochastically distributed ommatidial subtype in the ventral retina
ID Meglič, Andrej (Avtor), ID Ilić, Marko (Avtor), ID Pirih, Primož (Avtor), ID Škorjanc, Aleš (Avtor), ID Wehling, Martin F. (Avtor), ID Kreft, Marko (Avtor), ID Belušič, Gregor (Avtor)

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URLURL - Izvorni URL, za dostop obiščite https://www.pnas.org/content/116/43/21843 Povezava se odpre v novem oknu

Izvleček
The ventral compound eye of many insects contains polarization-sensitive photoreceptors, but little is known about how they are integrated into visual functions. In female horseflies, polarized reflections from animal fur are a key stimulus for host detection. To understand how polarization vision is mediated by the ventral compound eye, we investigated the band-eyed brown horsefly Tabanus bromius using anatomical, physiological, and behavioral approaches. Serial electron microscopic sectioning of the retina and single-cell recordings were used to determine the spectral and polarization sensitivity (PS) of photoreceptors. We found 2 stochastically distributed subtypes of ommatidia, analogous to pale and yellow of other flies. Importantly, the pale analog contains an orthogonal analyzer receptor pair with high PS, formed by an ultraviolet (UV)-sensitive R7 and a UV- and blue-sensitive R8, while the UV-sensitive R7 and green-sensitive R8 in the yellow analog always have low PS. We tested horsefly polarotaxis in the field, using lures with controlled spectral and polarization composition. Polarized reflections without UV and blue components rendered the lures unattractive, while reflections without the green component increased their attractiveness. This is consistent with polarotaxis being guided by a differential signal from polarization analyzers in the pale analogs, and with an inhibitory role of the yellow analogs. Our results reveal how stochastically distributed sensory units with modality-specific division of labor serve as separate and opposing input channels for visual guidance.

Jezik:Angleški jezik
Ključne besede:polarization vision, rhabdomere, insect photoreceptor, retinal mosaic, pale
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:BF - Biotehniška fakulteta
MF - Medicinska fakulteta
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Leto izida:2019
Št. strani:Str. 21843-21853
Številčenje:Vol. 116, no. 43
PID:20.500.12556/RUL-128327 Povezava se odpre v novem oknu
UDK:591.1
ISSN pri članku:0027-8424
DOI:10.1073/pnas.1910807116 Povezava se odpre v novem oknu
COBISS.SI-ID:5188175 Povezava se odpre v novem oknu
Datum objave v RUL:08.07.2021
Število ogledov:1356
Število prenosov:145
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Gradivo je del revije

Naslov:Proceedings of the National Academy of Sciences of the United States of America
Skrajšan naslov:Proc. Natl. Acad. Sci. U. S. A.
Založnik:National Academy of Sciences
ISSN:0027-8424
COBISS.SI-ID:286487 Povezava se odpre v novem oknu

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Začetek licenciranja:22.10.2019

Projekti

Financer:Drugi - Drug financer ali več financerjev
Program financ.:US Air Force
Številka projekta:FA9550-15-1-0068

Financer:Drugi - Drug financer ali več financerjev
Program financ.:US Air Force
Številka projekta:FA9550-19-1-7005

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P3-0333
Naslov:Očesne bolezni odraslih in otrok

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:130-2014

Financer:EC - European Commission
Program financ.:European Regional Development Fund

Financer:Drugi - Drug financer ali več financerjev
Program financ.:Ministry of Education, Science and Sport of Slovenia
Številka projekta:5442-1/2018/434
Naslov:International Competitiveness of Research, Innovation and Technological Development

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