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| {{Speciesbox | |||
| #REDIRECT ] | |||
| | name = Indo-Pacific Portuguese man-of-war | |||
| | image = Physalia-utriculus.jpg | |||
| | image_caption = A blue bottle washed ashore at a beach in Australia | |||
| | taxon = Physalia utriculus | |||
| | authority = (], 1787){{cn|date=March 2018}} | |||
| }} | |||
| ] | |||
| {{italic title}} | |||
| {{R from alternative scientific name|animals}} | |||
| {{R to common name|animal}} | |||
| '''''Physalia utriculus''''', also called '''blue bottle''' or '''Indo-Pacific Portuguese man-of-war''', is a marine ]n of the order ] found in the Indian and Pacific Oceans.<ref name="Waikïkï" /> A gas-filled bladder allows it to float on the surface, propelled by currents, tides, and by a sail at the top of the bladder.<ref name="Waikïkï" /> A single long tentacle of venomous ]s, hanging below the float, provides the animal with a means of capturing prey.<ref name="Waikïkï" /> | |||
| ⚫ | ] | ||
| ==Description== | |||
| ], NSW, Australia]] | |||
| Like the Atlantic ], the Indo-Pacific Portuguese man o' war is not a true ] but a siphonophore, a colonial animal made up of tiny specialised animals called polyps, which are all connected to each other and function like the organs and tissues of single multicellular organisms, like fish or humans, to the extent that the polyps lack the ability to survive by themselves. It is composed of four separate colonies of polyps and medusoids. The colony consists of a gas-filled polyp that keeps it afloat, and three other polyp types called the gastrozooids, gonozooids and dactylozooids. Dactylozooids form tentacles that hang below the water's surface and detect and attack prey, and drag the prey up towards the gastrozooids (the digestive polyps), which attach their mouths and consume the food item. The gonozooids are adjacent to the gastrozooids and constitute the reproductive structures of the colony, shedding eggs or sperm into the water.<ref>{{cite web |url=http://museum.wa.gov.au/research/research-areas/aquatic-zoology/resources/sea-stinger-factsheets/bluebottles |title=Bluebottle factsheet |publisher=Western Australian Museum |accessdate=12 August 2015 |archiveurl=https://web.archive.org/web/20150321011427/http://museum.wa.gov.au/research/research-areas/aquatic-zoology/resources/sea-stinger-factsheets/bluebottles |archivedate=21 March 2015}}</ref> | |||
| ''P. utriculus'' is distinguished from the Portuguese man o' war (''Physalia physalis'') by the smaller size of the float (six inches (16 cm) compared with twelve (30 cm)) and by having a single long fishing tentacle. Like its larger relative, ''P. utriculus'' often occurs in swarms. | |||
| ==Distribution== | |||
| ] | |||
| ''P. utriculus'' is less widely distributed than the larger ''P. physalis'', but it is the most common species on Australian coasts. It is also found in ]an waters, where it is informally named ''<nowiki>‘</nowiki>ili mane‘o'' or ''palalia''.<ref name="Waikïkï">{{cite web|url=http://www.waquarium.org/_library/images/education/marinelifeprofiles/man-of-war0909.pdf |archiveurl=https://web.archive.org/web/20131115005158/http://www.waquarium.org/_library/images/education/marinelifeprofiles/man-of-war0909.pdf|title=Indo-Pacific Portuguese Man-Of-War |date=1998|work=Marine Life Profile|publisher=Waikïkï Aquarium at the University of Hawai‘i-Māno|accessdate=2009-01-12 |archivedate=2013-11-15}}</ref> | |||
| ==Hazards== | |||
| Individuals of ''P. utriculus'' sometimes become stranded on beaches, where their toxic ] can remain potent for weeks or months in moist conditions{{citation needed|date=August 2015}}. ''P. utriculus'' is responsible for most of the reported injuries on Australian beaches.{{citation needed|date=June 2016}} On the east coast of Australia 10,000 to 30,000 stings per year from animals of the genus ''Physalia'' are reported. Most of the incidents are on the eastern coast, with only 500 or so in western and southern waters. Unlike ''P. physalis'', which has claimed the lives of three or more swimmers, no fatalities have been recorded for ''P. utriculus'' stings.<ref name="CRC">{{cite web|url=http://www.reef.crc.org.au/publications/brochures/Bluebottles.htm |archiveurl=https://web.archive.org/web/20140317195915/http://www.reef.crc.org.au/publications/brochures/Bluebottles.htm|title=Bluebottles and Pacific man-o-war|date=November 2004|work=Stinging jellyfish in tropical Australia|publisher=CRC Reef Research Centre|accessdate=2009-01-12|archivedate=2014-03-17}}</ref> | |||
| ==References== | |||
| {{reflist}} | |||
| {{taxonbar|from=Q2256295}} | |||
| ⚫ | ] | ||
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Revision as of 19:31, 19 January 2022
| Indo-Pacific Portuguese man-of-war | |
|---|---|
| |
| A blue bottle washed ashore at a beach in Australia | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Cnidaria |
| Class: | Hydrozoa |
| Order: | Siphonophorae |
| Family: | Physaliidae |
| Genus: | Physalia |
| Species: | P. utriculus |
| Binomial name | |
| Physalia utriculus (La Martinière, 1787) | |
Physalia utriculus, also called blue bottle or Indo-Pacific Portuguese man-of-war, is a marine hydrozoan of the order Siphonophora found in the Indian and Pacific Oceans. A gas-filled bladder allows it to float on the surface, propelled by currents, tides, and by a sail at the top of the bladder. A single long tentacle of venomous cnidocytes, hanging below the float, provides the animal with a means of capturing prey.
Description
Like the Atlantic Portuguese man o' war, the Indo-Pacific Portuguese man o' war is not a true jellyfish but a siphonophore, a colonial animal made up of tiny specialised animals called polyps, which are all connected to each other and function like the organs and tissues of single multicellular organisms, like fish or humans, to the extent that the polyps lack the ability to survive by themselves. It is composed of four separate colonies of polyps and medusoids. The colony consists of a gas-filled polyp that keeps it afloat, and three other polyp types called the gastrozooids, gonozooids and dactylozooids. Dactylozooids form tentacles that hang below the water's surface and detect and attack prey, and drag the prey up towards the gastrozooids (the digestive polyps), which attach their mouths and consume the food item. The gonozooids are adjacent to the gastrozooids and constitute the reproductive structures of the colony, shedding eggs or sperm into the water.
P. utriculus is distinguished from the Portuguese man o' war (Physalia physalis) by the smaller size of the float (six inches (16 cm) compared with twelve (30 cm)) and by having a single long fishing tentacle. Like its larger relative, P. utriculus often occurs in swarms.
Distribution
P. utriculus is less widely distributed than the larger P. physalis, but it is the most common species on Australian coasts. It is also found in Hawaiian waters, where it is informally named ‘ili mane‘o or palalia.
Hazards
Individuals of P. utriculus sometimes become stranded on beaches, where their toxic nematocysts can remain potent for weeks or months in moist conditions. P. utriculus is responsible for most of the reported injuries on Australian beaches. On the east coast of Australia 10,000 to 30,000 stings per year from animals of the genus Physalia are reported. Most of the incidents are on the eastern coast, with only 500 or so in western and southern waters. Unlike P. physalis, which has claimed the lives of three or more swimmers, no fatalities have been recorded for P. utriculus stings.
References
- ^ "Indo-Pacific Portuguese Man-Of-War" (PDF). Marine Life Profile. Waikïkï Aquarium at the University of Hawai‘i-Māno. 1998. Archived from the original (PDF) on 2013-11-15. Retrieved 2009-01-12.
- "Bluebottle factsheet". Western Australian Museum. Archived from the original on 21 March 2015. Retrieved 12 August 2015.
- "Bluebottles and Pacific man-o-war". Stinging jellyfish in tropical Australia. CRC Reef Research Centre. November 2004. Archived from the original on 2014-03-17. Retrieved 2009-01-12.
| Taxon identifiers | |
|---|---|
| Physalia utriculus | |