Ascidiella aspersa, the European sea squirt, is a species of solitary sea squirts native to the northeastern Atlantic, from the Mediterranean Sea to Norway. They possess oval bodies up to 50 to 130 mm (2.0 to 5.1 in) in length. Their branchial (or oral) siphons are conical and positioned at the top of the body. They possess six to eight lobes. The atrial siphons are located at the upper third of the side of the body and possess six lobes. The body is covered by a firm transparent test that is greyish to brown in color. The test often snag detritus that remain loosely attached to the animal. When expanded, at most 40 tentacles can be observed on the inside surface of the branchial wall. Both the openings of the branchial and atrial siphons possess lighter colored ridges on their rims. They may also be frilled at times. A. aspersa are attached to the substrates by the left side of their bodies. They can be found in dense groups of unfused individuals on hard surfaces like rocks. at depths of up to 90 m (300 ft).[2][3][4][5]
Ascidiella aspersa closely resemble Ciona intestinalis, but can be distinguished by their lack of yellow markings around their siphons.[2]
Ascidiella aspersa, the European sea squirt, is a species of solitary sea squirts native to the northeastern Atlantic, from the Mediterranean Sea to Norway. They possess oval bodies up to 50 to 130 mm (2.0 to 5.1 in) in length. Their branchial (or oral) siphons are conical and positioned at the top of the body. They possess six to eight lobes. The atrial siphons are located at the upper third of the side of the body and possess six lobes. The body is covered by a firm transparent test that is greyish to brown in color. The test often snag detritus that remain loosely attached to the animal. When expanded, at most 40 tentacles can be observed on the inside surface of the branchial wall. Both the openings of the branchial and atrial siphons possess lighter colored ridges on their rims. They may also be frilled at times. A. aspersa are attached to the substrates by the left side of their bodies. They can be found in dense groups of unfused individuals on hard surfaces like rocks. at depths of up to 90 m (300 ft).
Ascidiella aspersa closely resemble Ciona intestinalis, but can be distinguished by their lack of yellow markings around their siphons.
De vuilwitte zakpijp (Ascidiella aspersa) is een zakpijpensoort uit de familie van de Ascidiidae.[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1776 door Müller.
Bronnen, noten en/of referenties
分類 界 : 動物界 Animalia 門 : 脊索動物門 Chordata 亜門 : 尾索動物亜門 Urochordata 綱 : ホヤ綱 Ascidiacea 目 : マメボヤ目 Enterogona 亜目 : マメボヤ亜目 Phlebobrachia 科 : ナツメボヤ科 Ascidiidae 属 : Ascidiella 種 : ヨーロッパザラボヤ A. aspersa 学名 Ascidiella aspersa (Muller, 1776) 和名 ヨーロッパザラボヤ ヨーロッパザラボヤ（学名：Ascidiella aspersa）は、脊索動物門・ホヤ綱に分類されるホヤの仲間の1種。
アメリカ東海岸、アルゼンチン、南アフリカ、インド、オーストラリア南部、ニュージーランド、日本で外来種として移入分布している。日本での最初の記録は2008年9月で、北海道の内浦湾（噴火湾）のホタテガイ垂下養殖漁場において、貝や養殖施設に大量に付着していることが確認された[1]。当初は在来種のザラボヤ（Ascidia zara）と考えられていたが、2010年にヨーロッパザラボヤであることが発表された[1]。
体長130mmに達する大型のホヤ[2]。単体性で、潮間帯から50ｍまでの水深に生息し、波の弱い湾の入り江や港内など浅海域で多く見られる[2]。雌雄同体。
