Wikipedistka:Stachys/Pískoviště: Porovnání verzí
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{{Taxobox | barva = pink
| jméno = Řasovník protáhlý
| obrázek = Phyllopteryx_taeniolatus1.jpg
| popis obrázku = ''Phyllopteryx taeniolatus'' v [[Cabbage Tree Bay]], [[Sydney]], [[Austrálie]]
| říše = [[živočichové]] (Animalia)
| kmen = [[strunatci]] (Chordata)
| třída = [[paprskoploutví]] (Actinopterygii)
| řád = [[volnoostní]] (Syngnathiformes)
| čeleď = [[jehlovití]] (Syngnathidae)
| rod = [[řasovník]] (Phyllopteryx)
| binomické jméno = Phyllopteryx taeniolatus
| druh popsal = [[Bernard Germain Étienne de la Ville, Comte de Lacépède|Lacepède]], [[1804]]
}}
'''''Phyllopteryx taeniolatus''''', the '''řasovník protáhlý''', is a [[marine biology|marine]] [[fish]] related to the [[seahorse]]. It is the only member of the genus '''''Phyllopteryx'''''. It is found in water 3 to 50 [[metre|m]] deep around the southern coastline of [[Australia]], approximately between [[Port Stephens, New South Wales]] and [[Geraldton, Western Australia]], as well as around [[Tasmania]]. Weedy Seadragons are named for the weed-like projections on their bodies that [[camouflage]] them as they move among the seaweed beds where they are usually found.
[[Image:Phyllopteryx taeniolatus Bauer.jpg|thumb|left|300px|Illustration of Weedy Seadragons by [[Ferdinand Bauer]]]]
Weedy Seadragons can reach 45 cm in length. They feed on tiny [[crustacean]]s and other [[zooplankton]], from places such as crevices in reef, which are sucked into the end of their long tube-like snout. They lack a prehensile tail that enables similar species to clasp and anchor themselves. ''Phyllopteryx taeniolatus'' swim in shallow reefs and weed beds, and resemble drifting weed when moving over bare sand.<ref name=M&S>{{cite book |last=Morrison |first= Sue|authorlink= |coauthors= Storrie, Ann|editor= |others= |title=Wonders of Western Waters: The Marine Life of South-Western Australia |origdate= |origyear= |origmonth= |url= |format= |accessdate= |edition= |series= |year=1999 |year= |month= |publisher=[[Department of Conservation and Land Management|CALM]] |location= |language= |isbn=0 7309 6894 4 |oclc= |doi= |id= |pages=68 |chapter= |chapterurl= |quote= }}</ref>
Seadragons, seahorses and [[pipefish]] are the only known species where the male carries the eggs.
[[File:Phyllopteryx.jpg|thumb|left|250px|Phyllopteryx]]
The male of the species carries the fertilized eggs, attached under his tail, where they are incubated for about eight weeks. The young are independent at birth, beginning to eat shortly after.<ref name=M&S/> Mating in captivity is rare since researchers have yet to understand what biological or environmental factors trigger them to reproduce. In captivity the survival rate for Weedy Seadragons is about 60%.<ref>[http://www.newsvine.com/_news/2008/06/12/1567144-endangered-sea-dragon-at-ga-aquarium-pregnant Newsvine/Associated Press 12 June 2008]</ref>
A more [[cryptic (zoology)|cryptic]] relative of the Weedy Seadragon is the Leafy Seadragon, ''[[Phycodurus eques]]''. In the November 2006 issue of ''[[National Geographic Magazine|National Geographic]]'' magazine, marine biologist Greg Rouse is reported as investigating the DNA variation of the two seadragon species across their ranges.
The [[Aquarium of the Pacific]] in Long Beach, California, in the USA; the [[Melbourne Aquarium]] in Melbourne, Victoria, in Australia; and the [[Tennessee Aquarium]] in Chattanooga, Tennessee, in the USA<ref>[http://www.tnaqua.org/Newsroom/faqsanimals.asp Tennessee Aquarium Website]</ref>, are the only facilities in the world to have successfully bred Weedy Seadragons in captivity, though others occasionally report egg laying.<ref name="rich">{{cite web |url=http://aquadaily.com/2008/07/18/weedy-seadragons-spawn-for-hong-kong-aquarist/ |title=Weedy Seadragons spawn for Hong Kong aquarist |accessdate=2009-02-01|date=2008-07-18|publisher=AquaDaily}}</ref> As of June 2008, the [[Georgia Aquarium]] in Atlanta, USA had a pregnant seadragon, which was expected to give birth in early-mid July.<ref>{{cite web |url=http://news.yahoo.com/s/ap/20080613/ap_on_fe_st/odd_pregnant_sea_dragon_4 |title= Endangered sea dragon at Ga. aquarium pregnant}}</ref>
The Weedy Seadragon is the marine emblem of the Australian State of [[Victoria (Australia)|Victoria]].<ref>[http://www.dse.vic.gov.au/DSE/nrencm.nsf/childdocs/-2594CB2F087CB6D84A2567CA0081791F-F5BA27244232485DCA256CC40012D597?open Dept of Sustainabilty and Environment Victoria]</ref>
==References==
{{reflist}}
* {{IUCN2006|assessors=Connolly|year=2006|id=17177|title=Phyllopteryx taeniolatus|downloaded=09 May 2006}}
==External links==
{{commons-inline|Phyllopteryx taeniolatus|Weedy sea dragon}}
* [http://www.amonline.net.au/fishes/students/focus/seadrag.htm Australian Museum Online] - Leafy and Weedy Seadragons
* [http://users.bigpond.net.au/je.st/seadragons/index.html Leafy Seadragons and Weedy Seadragons]
* [http://www.botanybaywatch.com.au/pmwiki/pmwiki.php?n=Marine.WeedySeaDragon Weedy Sea Dragon Monitoring Program in Botany Bay]
* [http://www.yankalilla.sa.gov.au/site/page.cfm?u=199 Leafy Sea Dragon Festival]
* [http://www.abyss.com.au/dragon.html Weedy Sea Dragon]
* [http://au.youtube.com/watch?v=9XvhMyxy6eI Youtube Male Weedy Seadragon with eggs]
* [http://au.youtube.com/watch?v=KHydEwlu5pw Youtube Weedy Seadragon]
* [http://splashingtime.com/seadragon/2.html Male Weedy Sea Dragon carrying eggs]
[[Category:Syngnathidae]]
[[Category:Fish of Australia]]
[[da:Sødrage (Phyllopteryx)]]
[[de:Kleiner Fetzenfisch]]
[[es:Phyllopteryx taeniolatus]]
[[eu:Belardun itsas dragoi]]
[[fr:Phyllopteryx taeniolatus]]
[[it:Phyllopteryx taeniolatus]]
[[ja:ウィーディ・シードラゴン]]
[[ru:Тряпичник]]
[[simple:Weedy sea dragon]]
[[zh:草海龍]]
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