Signs and symptoms of the chronic phase of Chagas disease may occur 10 to 20 years after initial infection, or they may never occur. In severe cases, however, Chagas disease signs and symptoms may include: 1  Irregular heartbeat.2  Congestive heart failure. 3  Sudden cardiac arrest.4  Difficulty swallowing due to enlarged esophagus.igns and symptoms of the chronic phase of Chagas disease may occur 10 to 20 years after initial infection, or they may never occur. In severe cases, however, Chagas disease signs and symptoms may include: 1  Irregular heartbeat.
Behind the octopus's head, directly opposite the arms, is its mantle. The mantle is a highly muscled structure that houses all of the animal's organs. Its gills, hearts, digestive system and reproductive glands are all crammed into this one space.
Blue ringed octopus is the common name for the genus Hapalochlaena, which contains three species: *Greater Blue-ringed octopus (Hapalochlaena lunulata) *Southern Blue-ringed o â¦ ctopus, also known as the Lesser Blue-ringed octopus (Hapalochlaena maculosa) *Blue-lined octopus (Hapalachlaena fasciata) Based on one description given of a single specimen in 1938, some think that there may be a fourth species, Hapolachlaena nierstraszi, but that is uncertain.