Ventral polarization vision in tabanids: horseflies and deerflies (Diptera: Tabanidae) are attracted to horizontally polarized light

@article{Horvth2008VentralPV,
  title={Ventral polarization vision in tabanids: horseflies and deerflies (Diptera: Tabanidae) are attracted to horizontally polarized light},
  author={G{\'a}bor Horv{\'a}th and J{\'o}zsef Majer and Lor{\'a}nd Horv{\'a}th and Ildik{\'o} Sziv{\'a}k and Gy{\"o}rgy Kriska},
  journal={Naturwissenschaften},
  year={2008},
  volume={95},
  pages={1093-1100}
}
Adult tabanid flies (horseflies and deerflies) are terrestrial and lay their eggs onto marsh plants near bodies of fresh water because the larvae develop in water or mud. To know how tabanids locate their host animals, terrestrial rendezvous sites and egg-laying places would be very useful for control measures against them, because the hematophagous females are primary/secondary vectors of some severe animal/human diseases/parasites. Thus, in choice experiments performed in the field we studied… 

Polarization sensitivity in Collembola: an experimental study of polarotaxis in the water-surface-inhabiting springtail Podura aquatica

In behavioural choice experiments, the water springtail Podura aquatica shows polarotaxis to horizontally polarized light as well as phototaxis, and the results indicate that the threshold d* of polarization sensitivity in P. aquatica is between 10.1 and 25.5%.

Spottier Targets Are Less Attractive to Tabanid Flies: On the Tabanid-Repellency of Spotty Fur Patterns

It is demonstrated that the attractiveness of spotty patterns to tabanids is also reduced if the target exhibits spottiness only in the angle of polarization pattern, while being homogeneous grey with a constant high degree of polarization.

Linearly Polarized Light as a Guiding Cue for Water Detection and Host Finding in Tabanid Flies

It is shown that tabanid flies are attracted to horizontally polarized light stimulating their ventral eye region, and it is demonstrated that the use of a striped fur pattern has the advantage that such coat patterns attract far fewer tabanids than either homogeneous black, brown, grey or white equivalents.

Why do horseflies need polarization vision for host detection? Polarization helps tabanid flies to select sunlit dark host animals from the dark patches of the visual environment

It is shown that the use of polarization information considerably increases the effectiveness of visual detection of dark host animals even in front of sunny–shady–patchy vegetation and the chances of successful host selection based on either intensity or degree of polarization of the target and the combination of these two parameters.

Horsefly object-directed polarotaxis is mediated by a stochastically distributed ommatidial subtype in the ventral retina

It is reported that horsefly retina contains 2 ommatidial subtypes that separately analyze polarization of light and color, and how stochastically distributed sensory units with modality-specific division of labor serve as separate and opposing input channels for visual guidance is revealed.
...

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