Monotremes and Electroreception :: Monotremes and Electroreception

AbstractThrough their evolution, monotremes have developed several feature films that piddle away them unique from most other mammals. The focus of this paper lies on the electroreceptive capabilities of monotremes. Electroreception of monotremes is partly comparable to that in fish. The bill of the platypus, Ornithorhynchus anatinus, and the beaks of the echidnas, Tachyglossus aculeatus and genus Zaglossus bruijni, all(prenominal) contain three types of receptors push-rod mechanoreceptors, serous gland electroreceptors, and mucous gland electroreceptors. The info collected by these receptors is sent to the somatosensory cortex. The platypus, whose electroreceptive system is more tangled than that of the echidna, uses electroreception to capture prey and is the only mammal know to so. (It is not until now known if the echidna uses electroreception to capture prey.) IntroductionMonotremes have fascinated scientists since their uncovering in 1799 (Moyal 4). The isolation of mon otremes in Australia has allowed monotremes to take on several unique characteristics. unrivaled newly discovered mystery of these animals is their electroreceptive capability. This discovery brings up many questions. How did monotremes evolve this elaborate sensory system? What do these electroreceptors look like, and how do they swear out? How do monotremes perceive this sixth sense? This paper will approach to address these questions.Monotreme DiversityOrder Monotremata is split into two families and three species. Ornithorhynchus anatinus, commonly called the platypus, thunder mug be found in eastern Australian rivers and creeks from Queensland all the way down the coast and crosswise the Bass Strait into Tasmania (Moyal 18). The platypus is not a large animal. Males, which can weigh 2.35 kg and reach .56 m in length, are bigger than the females (Dawson 9-10). The platypus swims with its mouth, ears, and eyes shut (Dawson 10). O. anatinus sifts the bottom for food, which i s mainly non-insect invertebrates, crustaceans, worms, some vertebrates, and benthal larvae of various insects (Dawson 10). The two other surviving species of monotremes are Tachyglossus aculeatus, the short-beaked echidna, and Zaglossus bruijni, the long-beaked echidna. Echidnas range throughout Australia and New Guinea as well as islands adjacent to both land masses (Collins 17). Both species have characteristic modified hairs that function as spines (Dawson 10-12). T. aculeatus is a stocky animal (3-5kg) with a small head and pointed snout (Dawson 10-11). Z. bruijni is larger than T. aculeatus (10kg) and has a downward trend snout (Dawson 11-12). The snouts and tongues of T. aculeatus and Z. bruijni are ideal for diets of termites, ants, and earthworms (Dawson 10-12).