Jong-Yeol Moon's research while affiliated with Seoul National University and other places
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Publications (4)
Camouflage conceals animals from predators and depends on the interplay between the morphology and behaviour of animals. Behavioural elements of animals, such as the choice of a resting spot or posture, are important for effective camouflage, as well as the animals’ cryptic appearance. To date, the type of sensory input that mediates resting site c...
Camouflage can be attained via mechanisms such as background matching (resembling the general background) and disruptive coloration
(hindering the detection of an animal’s outline). However, despite much conceptual work with artificial stimuli there have
to date been few studies of how such camouflage types work in real animals in their natural env...
Many moths have wing patterns that resemble bark of trees on which they rest. The wing patterns help moths to become camouflaged and to avoid predation because the moths are able to assume specific body orientations that produce a very good match between the pattern on the bark and the pattern on the wings. Furthermore, after landing on a bark moth...
Many animals use camouflage to avoid predation. Their crypticity, that is, the degree of a visual match between the animal's body and the background, affects their survival. Therefore, they may develop the ability to choose an appropriate background, which matches the animal's own colour pattern. We have previously shown that moths, Hypomecis robor...
Citations
... The human vision system pays great attention to the outline of the object, and often obtains the specific shape of the target object through the edge information and interprets the target object and so on. However, a key factor for insect camouflage is edge disruption [46][47][48]. As previously described above, the coarse camouflage map S c was derived from the three highest layers, which could only capture a probable location of the camouflaged insect, ignoring boundary details. ...
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... While we find little impact of artificial lighting on avian predation risk at dawn and dusk, altering the moths' visual environment at night may have more significant consequences on their exposure to predators during the day. Recent research has demonstrated that a number of animals improve their concealment by choosing backgrounds which complement their appearance 38 , and moths are thought to use vision, among other cues, to select optimal colour-matching resting locations 39,40 . Artificial light has the potential to create dramatic colour mismatches between moths and their backgrounds, because the moths must select resting locations under the influence of artificial light (before dawn), while the majority of visually guided predators will then be active under daylight. ...
... Signalers also reposition themselves dynamically based on the background to tune how conspicuous their patterns and displays are. The geometrid moth (Jankowskia fuscaria) has a bark-like pattern on its wings and experiences high predation on nonpattern-matching trees; these moths orient their bodies so their markings match the directionality of the tree bark ), potentially using touch to detect the orientation of bark patterning (Kang et al. 2013(Kang et al. , 2015. Male jumping spiders (H. ...
... The individuals prostrated themselves close to the substrate and bent their legs to reorient their position in relation to the background. Recent studies have shown that some species of moths that use trunks to camouflage themselves reorient their body position in relation to the background after landing when the initial landing position conferred low cryptic power (Kang et al. 2012;Kang et al. 2013). Thus, the observed behaviour of these animals in the field may be associated with background readjustment adaptations that increase camouflage in situations of danger from predation. ...
