In addition to its obvious physical characteristics--such as webbed feet, rubbery snout, and ears at the jaw's base--the platypus is a venomous monotreme with electroreception
, double cones in its eyes, a jaw unique to mammals, and bones in its pectoral girdle that other mammals lack (see Grant 2008).
Furthermore, their electroreception
and chemoreception systems are fundamental to locate and capture prey.
A similar electroreception
sense may be found in other insects, many of which have similar body hairs, the University of Bristol researchers believe.
Hodgson (1987) noted that Port Jackson sharks were bottom dwellers with relatively small eyes, and that vision did not play as important a part as olfaction (smell) and electroreception
in feeding and social behaviour.
blocked, sharks usually failed to capture prey.
The majority of electroreception
research has focused on varying the strength of applied current or the size of the dipole separation (Kalmijn, 1971, 1978; Kajiura and Holland, 2002, Kajiura, 2003; Kajiura and Fitzgerald, 2009).
Some land vertebrates, including such salamanders as the Mexican axolotl, have electroreception
and, until now, offered the best-studied model for early development of this sensory system.
americana may rely more heavily on electroreception
, and therefore the strong induced current produced by the barium-ferrite magnets elicited a repellent response.
I think they've demonstrated in a convincing way that this dolphin species can use electroreception
, and in a way that's sensitive enough to potentially detect prey.
Sharks, skates, and rays all use electroreception
to locate prey and navigate--especially sharks like the hammerheads that exist in darker environments.
Stingrays are flat fish with whiplike tails that have adapted a sensory system known as electroreception
The functional roles of electroreception
in non-electric fishes.