- Retina contains 20 million photoreceptors.
- The eye has a flicker fusion frequency of 70/sec in bright light.
- The pupil of the eye is rectangular.
- Octopus has chemoreceptors (taste receptors) on the suckers of their tentacles. By tasting this way, an octopus does not have to leave the safety of its home.
Interesting facts about Octopus
Interesting facts about Moth
- Noctuid Moth has a hearing range between 1,000 and 240,000 Hz.
- Emperor Moth can detect pheromones up to 5 km. distant.
- Silkworm Moth can detect pheromones up to 11 km. distant. This moth can detect pheromones in concentrations as low as 1 molecule of pheromone per 1017 molecules of air. A receptor cell can respond to a single molecule of the pheromone called bombykol and 200 molecules can cause a behavioral response.
Interesting facts about Fly
- Each eye has 3,000 lenses. (Simmons and Young, 1999)
- Eye has a flicker fusion rate of 300/sec. Humans have a flicker fusion rate of only 60/sec in bright light and 24/sec in dim light. The flicker fusion rate is the frequency with which the "flicker" of an image cannot be distinguished as an individual event. Like the frame of a movie...if you slowed it down, you would see individual frames. Speed it up and you see a constantly moving image.
- The small parasitic fly (Ormia ochracea) can locate sounds within a range of only 2o of the midline. (Mason et al., Nature, 410:686-690, 2001)
- Blowflies taste with 3,000 sensory hairs on their feet.
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