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The major neurotoxin component of the blue-ringed octopus is a compound originally known as "maculotoxin"; in 1978, this maculotoxin was found to be tetrodotoxin, [17] a neurotoxin also found in pufferfish, rough-skinned newts, and some poison dart frogs; the blue-ringed octopus is the first reported instance in which tetrodotoxin is used as a ...
Saliva glands of the southern blue-ringed octopus produce the deadly neurotoxin, maculotoxin. [10] The neurotoxin, tetrodotoxin (TTX), is secreted in the posterior salivary gland, which is located in the intestinal blood system of the octopus. This may provide the toxin into its bloodstream. The toxin has also been found in the eggs of this ...
The greater blue-ringed octopus, despite its vernacular name, is a small octopus whose size does not exceed 10 centimetres (3.9 in), arms included, with an average weight of 80 grams (2.8 oz). Its common name comes from the relatively large size of its blue rings (7 to 8 millimetres [0.28 to 0.31 in] in diameter), which are larger than those of ...
Blue-Ringed Octopus The blue-ringed octopus carries Tetrodotoxin, a neurotoxin just like pufferfish. However, the Blue-Ringed octopus contains enough toxins to kill a human.
Octopus larave feed on shrimps, isopods and amphipods, eventually settling on the ocean floor and developing into adults. [81] Octopus species that produce larger eggs instead hatch as benthic animals similar to the adults. [78]: 74–75 These include the southern blue-ringed, Caribbean reef, California two-spot and Eledone moschata [82]
Although tetrodotoxin was discovered in these fish, it is found in several other animals (e.g., in blue-ringed octopuses, rough-skinned newts, and moon snails). It is also produced by certain infectious or symbiotic bacteria like Pseudoalteromonas , Pseudomonas , and Vibrio as well as other species found in symbiotic relationships with animals ...
The blue-ringed octopus's rings are a warning signal; this octopus is alarmed, and its bite can kill. [112] Some molluscs sting or bite, but deaths from mollusc venoms total less than 10% of those from jellyfish stings. [113] All octopuses are venomous, [114] but only a few species pose a significant threat to humans.
Blue-lined octopuses are known to be nocturnal hunters, while other species in the genus such as the greater blue-ringed octopus (H. Lunulata) is known to be diurnal hunter. Prey for blue-lined octopuses mostly consists of crustaceans and stomatopods, however in captivity they have been recorded to eat live fish, suggesting they do in the wild ...