eyespot

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Related to Eyespots: lateral lines

eyespot

[′ī‚spät]
(botany)
A small photosensitive pigment body in certain unicellular algae.
A dark area around the hilum of certain seeds, as some beans.
(invertebrate zoology)
A simple organ of vision in many invertebrates consisting of pigmented cells overlying a sensory termination.
(plant pathology)
A fungus disease of sugarcane and certain other grasses which is caused by Helminthosporium sacchari and characterized by yellowish oval lesions on the stems and leaves.
References in periodicals archive ?
Although the regenerating apical organ only contained slightly more than half of the amount of serotonin-positive cells as an uncut larva, eyespots developed and were visible at 15 days post-cut (Figs.
XX shows similarities to those of genera Strigea Abildgaard, 1790, Apatemon Szidat, 1928, Pharyngostomum Ciurea, 1922 and Parastrigea Szidat, 1928 due to presence of ten flame cells and non-pigmented eyespots; however, the first three genera have fewer penetration gland-cells (4 or 2 pairs).
Specifically, if eyespot images indeed trigger implicit (social) threat-perception, we hypothesize that exposure to watchful eyes should lead to the experience of negative affect (e.g., anxiety, worry), which, as discussed, is often responsible for directing the brain's attention to social evaluation and decision-making problems in the first place.
With CRISPR/Cas9, Reed and Cornell colleague Linlin Zhang cut and disabled the Distal-less gene at an early stage of wing development and got an unexpected result: Rather than cause eyespots, Distal-less limits them.
It makes sense for the sculptures to be bones, for they suggest what it is that Comte's eyespots might see when they unblinkingly gaze at us with such fascination--X-rayed forms in an X-rayed space, moving skeletons curtained with diaphanous meat and carrying executive toys.
Usually it has been recommended to use it at 30-50 g a.i./ha concentration and it has been found effective against a variety of fungal pathogens such as eyespots and other diseases in cereals scabs Monilia disease and Gloeosporim rot in apples and pears.
Developmental stages were determined as either immature (having visible eyespots within the cyst) or developing (having faded eyespots or an X-shaped excretory vesicle within the cyst; Chen, 1948; Fleming et al., 2011).
North American Butterfly Association - Monday at Eugene Garden Club, 1645 High St.; Kathleen Prudic, a research scientist at OSU, will give a presentation on "Flying Circus: The How and Why of Butterfly Wing Patterns." Prudic will discuss how climate influences the development of butterfly behavior and coloration, and draw on her research on wing eyespots to illustrate the complexity of mate signaling and predator avoidance; refreshments at 7 p.m., program at 7:30 p.m.
Tullberg, "Deflective and intimidating eyespots: a comparative study of eyespot size and position in Junonia butterflies," Ecology & Evolution, vol.
Most students ran into problems right at the start (Couplet 1), as the body of the specimen (rather than just a shell for snails) was required to confirm the position of eyespots and number of pairs of tentacles.
We correct the previous erroneous identification of nephrocysts as eyespots in the hatching planktotrophic larvae of the nudibranchs Tritonia festiva and Janolus fuscus.