HAPALOCHLAENA MACULOSA PDF
Mantle length is cm. This species is extremely venomous, tetrodotoxin venom produced in the salivary glands has potential to cause human deaths (Ref. Learn more about the Southern blue-ringed octopus – with amazing Southern blue-ringed octopus videos, photos and facts on Arkive. Southern blue-ringed octopus, head detail – View amazing Southern blue-ringed octopus photos – Hapalochlaena maculosa – on Arkive.
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Share this image — Hide sharing options. The southern blue-ringed octopus Hapalochlaena maculosa is one of three closely related species belonging to the genus Hapalochlaena maculoda.
The upper surface of the southern blue-ringed octopus has a rough texture and is covered in wrinkles. At rest, this species is well camouflaged, being grey to beige with light brown patches on the body and arms 3.
It is these blue rings which give the southern blue-ringed octopus its common name 4.
The life cycle of happalochlaena southern blue-ringed octopus, from mating through to the eggs hatching and the young reaching maturity, lasts for approximately seven months. The eggs are carried by the female throughout their development, which lasts for around two months, and the female does not eat during this time. Once hatched, the young grow rapidly and begin hunting live prey within one month 6. Young southern blue-ringed octopuses hapalochlaenx thought to be venomous from birth 2and their blue rings appear when they are about six weeks old 6.
This species reaches sexual maturity at just four months old 3 6and may begin laying eggs a month after that. The adult female southern blue-ringed octopus dies shortly after the eggs have hatched 6and both sexes are unlikely to live for more than one year 3.
Like all cephalopodsthe southern blue-ringed octopus is an active predator 2. The southern blue-ringed octopus may also consume small fish 2 3.
Description & Behavior
Like other cephalopodsthe southern blue-ringed octopus is considered to be one of the most intelligent of all invertebrates 2 8. The range of the southern blue-ringed octopus extends across the entire south mavulosa of Australia 6from Western Australia to eastern Victoria 3.
Like other blue-ringed octopuses, the southern blue-ringed octopus is often sighted in coastal waters at depths of up to hapalkchlaena metres. Members of this genus are commonly found in shallow pools, under rocks and corals, or among clumps of sea squirts, particularly after storms. These soft-bodied animals often conceal themselves within crevices, seashells or coral rubble for protection 3.
Little information is available on the potential threats to the southern blue-ringed octopus.
However, members of its genus are sometimes collected for the aquarium trade, despite the risk posed by their venomous bite. The habitats these species occupy are also being degraded and fragmented by human activities, and blue-ringed octopuses may potentially be affected by overfishing and by human disturbance in the form of divers, tourists and beach-goers 3.
There are currently no known conservation measures in place for the southern blue-ringed octopus. However, any conservation efforts for this and other blue-ringed octopus species would also benefit other marine species with which they share their habitat. The southern blue-ringed octopus is likely to play an important role in its ecosystem, and might also help to control invasive crustaceans in parts of its range.
In addition, its venom could have potential medical uses 3. Suggested conservation actions for the southern blue-ringed octopus and other blue-ringed octopus species include increasing the size of Marine Protected Areas and enforcing laws to reduce run-off of pollutants into coastal waters.
It will also be important to educate the public, not only on the dangers posed by these species, but also on the important role they play in the marine environment. More information is needed on the populations of this small octopus, and measures to regulate its export for the aquarium trade should also be considered 3. This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact: Embed this Arkive thumbnail link “portlet” by copying and pasting the code mzculosa.
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Share on Facebook Tweet Send email. Southern blue-ringed octopus Hapalochlaena maculosa. The southern blue-ringed octopus is named for the small, iridescent blue spots it develops when alarmed.
The female southern blue-ringed octopus carries its eggs until they hatch, and dies shortly afterwards. Image credit Link to this image Add to scrapbook How you can use this image.
Also known as lesser blue-ringed octopus. Size Typical arm span: North Pacific giant octopus Enteroctopus dofleini. Curled octopus Eledone cirrhosa. Common octopus Octopus vulgaris. Southern maculsa octopus biology The life cycle of the southern blue-ringed octopus, from mating through to the eggs hatching and the young reaching maturity, lasts for approximately seven months.
Southern blue-ringed octopus range The range of the southern blue-ringed octopus extends macuulosa the entire south coast of Australia 6from Western Australia to eastern Victoria 3. Ruddy turnstone Arenaria interpres. Humpback whale Megaptera novaeangliae. Sei whale Balaenoptera borealis.
Southern blue-ringed octopus habitat Like other blue-ringed octopuses, the southern blue-ringed octopus is often sighted in coastal waters at depths of up to 50 metres. Whitespotted grouper Epinephelus coeruleopunctatus.
Southern blue-ringed octopus status The southern blue-ringed octopus has yet to be classified by the IUCN.
Southern blue-ringed octopus photo – Hapalochlaena maculosa – G | Arkive
Southern blue-ringed octopus threats Little information is available on the potential threats to the southern blue-ringed octopus. Southern blue-ringed octopus conservation There are currently no known conservation measures in place for the southern blue-ringed octopus. Find out more Find out more about the southern blue-ringed octopus and other blue-ringed octopus species: MarineBio – Blue-ringed octopuses: Australian Marine Conservation Society: Authentication This information is awaiting authentication by a species expert, and will be updated as soon as possible.
This species information was authored as part of the Arkive and Universities Scheme. All species have grasping tentacles, and either an internal or external shell. Includes nautiloids, cuttlefish, squids, octopuses, and extinct ammonites and belemnites.
Crustaceans Diverse group of animals with jointed limbs and a hard chitinous exoskeleton, characterised by the possession of two pairs of hapalochlxena, one pair of mandibles hapalohclaena used for handling and processing food and two pairs of maxillae appendages used in eating, which are located behind the mandibles. Includes crabs, lobsters, shrimps, woodlice and barnacles.
A genus tends to contain species that have characteristics in common. Gland An organ that makes and secretes substances used by the body. Invertebrates Animals with no backbone, such as insects, crustaceans, worms, molluscs, spiders, cnidarians jellyfish, corals, sea anemones and echinoderms.
Mantle In molluscs, a fold of skin that encloses a space known as the mantle cavity, which contains the gills.
ADW: Hapalochlaena maculosa: INFORMATION
The mantle is responsible for the secretion of the shell. Thesis, Prescott College, Arizona. Fisheries and Hapalochlaenaa Sciences15 1: Part 2 – Other marine envenomations. Australian Family Physician32 Marine Biology18 2: Marine Drugs8: Oxford University Press, Oxford. X Close Image credit.
Southern blue-ringed octopus
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