Lecture 9- Sensory Ecology 4 Flashcards
(14 cards)
Mechanoreception in the air?
Echolocation, hydrodynamic receptors
Mechanoreception in water?
Mechanoreception in the solid substrate?
Vibrissae
Whiskers, specialized sensory organs, are highly sensitive and connect to nerves
Lateral Line System
a straight line on the side of a fish composed of many neuromasts that detect vibrations.
Nuromast Organs
Small epithelial receptor organs (∼ 10–500 μm in length) that are composed of hundreds or, in some cases, thousands of sensory hair cells, in addition to nonsensory support cells
Electroreception
Detect weak electric fields, used by some bony fish, Amphibians, A few mammals, and elasmobranchs.
Ampullae of Lorenzini
sensitive electroreceptors, Pore filled with electrically conduct. gel
Magnetoreception
Detect the Earth’s magnetic field
How do harbor seals follow hydrodynamic trails?
Harbor seals use hydrodynamic trails to follow the trails of other seans, without their whiskers a seal would not be able to follow
How do Antlion larvae use mechanoreception?
A study was done on how antlion larvae build sand pits to capture their prey it was questioned if they can detect substrate-born vibrations of the prey. It was found that they do, in fact, toss sand in the direction of the vibrations.
How do platypi use electroreception?
Their bills are made of electro sensitive cells that can detect the electro field of all living things
How do sharks integrate sensory information?
Can detect muscle activity of prey and navigate with the earth’s geomagnetic field. Sharks cannot hunt with both olfactory and electrical cues obscured but can with one or the other still intact
Hammerhead sharks vs. sand sharks
No evidence that hammerhead sharks have greater
electron detection capability than sandbar sharks
