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12 results for “Zebra stripes”
Zebras of all stripes repel biting flies at close range
<p>The best-supported hypothesis for why zebras have stripes is that stripes repel biting flies. While this effect is well-established, the mechanism behind it remains elusive. Myriad hypotheses have been suggested, but few experiments have helped narrow the field of possible explanations. In addition, the complex visual features of real zebra pelage and the natural range of stripe widths have been largely left out of experimental designs. In paired-choice field experiments in a Kenyan savannah, we found that hungry Stomoxys flies released in an enclosure strongly preferred to land on uniform tan impala pelts over striped zebra pelts but exhibited no preference between the pelts of the zebra species with the widest stripes and the narrowest stripes. Our findings confirm that zebra stripes repel biting flies under naturalistic conditions and do so at close range (suggesting that several of the mechanisms hypothesized to operate at a distance are unnecessary for the fly-repulsion effect) but indicate that interspecific variation in stripe width is associated with selection pressures other than biting flies.</p>
Zebras of all stripes repel biting flies at close range
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Data from: How the zebra got its stripes: a problem with too many solutions
The adaptive significance of zebra stripes has thus far eluded understanding. Many explanations have been suggested, including social cohesion, thermoregulation, predation evasion and avoidance of biting flies. Identifying the associations between phenotypic and environmental factors is essential for testing these hypotheses and substantiating existing experimental evidence. Plains zebra striping pattern varies regionally, from heavy black and white striping over the entire body in some areas to reduced stripe coverage with thinner and lighter stripes in others. We examined how well 29 environmental variables predict the variation in stripe characteristics of plains zebra across their range in Africa. In contrast to recent findings, we found no evidence that striping may have evolved to escape predators or avoid biting flies. Instead, we found that temperature successfully predicts a substantial amount of the stripe pattern variation observed in plains zebra. As this association between striping and temperature may be indicative of multiple biological processes, we suggest that the selective agents driving zebra striping are probably multifarious and complex.
Data from: How the zebra got its stripes: a problem with too many solutions
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Population structure, inbreeding and stripe pattern abnormalities in plains zebras
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Figure 1 in Do zebra stripes influence thermoregulation?
Figure 1. Different piloerection of black and white stripes.
Figure 2 in Do zebra stripes influence thermoregulation?
Figure 2. Zebra mare stripe temperatures.
List of 370 events associated with "zebra stripe" pattern generation in the Earth's inner belt
<p>This is an accompanying file for the article entitled "Experimental Determination of the Conditions Associated with “Zebra Stripe” Pattern Generation in the Earth’s Inner Radiation Belt" by Lejosne and Mozer, 2020 (submitted).</p> <p>This document provides a list of 370 times (t<sub>o</sub>) associated with the generation of zebra stripe patterns in the Earth's inner belt.</p> <p>The format of the doc is the following:</p> <p>column1: number of the event</p> <p>column 2: time stamp for t<sub>o</sub><br> yy/mm/dd/hh:mn ; where yy indicates the 2 last digits of the year of the event, mm indicates the month, dd indicates the day, hh is the UT hour and mn is the minute</p> <p>column3: provides the same time, but in decimal day of the year (doy)</p> <p>column4: provides the same time, in decimal day of the year (doy), but evaluated according to the second method detailed in the manuscript. (the difference between columns 3 and 4 is of 20 min on average)</p> <p>column5: provides the margin of error (standard deviation) in the determination of t<sub>o</sub>, in hours.</p> <p> </p>
Figure 4 in Do zebra stripes influence thermoregulation?
Figure 4. Mean stripe temperature differences, two zebras.
Figure 3 in Do zebra stripes influence thermoregulation?
Figure 3. Zebra stallion stripe temperatures.
Figure 6 in Do zebra stripes influence thermoregulation?
Figure 6. Stripe temperatures of a zebra hide.
Figure 5 in Do zebra stripes influence thermoregulation?
Figure 5. Mare (Jilali) and stallion (Stoney) – Differences in stripe temperatures.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.