神经节皮海鞘和新种β皮海鞘（海鞘纲：皮海鞘科）：来自西大西洋的外来及新被囊动物。
Pyura gangelion and Pyura beta sp. nov. (Ascidiacea: Pyuridae): an exotic and a new tunicate from the West Atlantic.
作者信息
Skinner LuÍs Felipe, Rocha Rosana M, Counts Bailey K
机构信息
Universidade do Estado do Rio de Janeiro, Departamento de Ciências. Laboratório de Ecologia e Dinâmica Bêntica Marinha. Rua Francisco Portela 1470, Patronato, São Gonçalo, RJ, Brazil. 24435-005..
出版信息
Zootaxa. 2019 Jan 17;4545(2):264-276. doi: 10.11646/zootaxa.4545.2.6.
The genus Pyura is widely distributed with 99 valid species. Since 1961, Pyura vittata (Stimpson, 1852) has been reported to the Southwest Atlantic but new collections and a revision of the morphological characters of samples deposited in scientific collections revealed that samples had been confused with two other species: Pyura gangelion (Savigny, 1816) and Pyura beta sp. nov. present in the Caribbean sea and Brazil. In Brazil, P. vittata is not present south to Bahia, P. beta was found from Espírito Santo to São Paulo, while P. gangelion was only found in Espírito Santo, and we suggest that populations of both P. beta and P. gangelion are non-native in Brazil.
海鞘属分布广泛，有99个有效物种。自1961年以来，条纹海鞘（Pyura vittata，史汀生，1852年）在西南大西洋有过记录，但新的采集以及对保存在科学标本馆中的样本形态特征的修订表明，这些样本曾与另外两个物种混淆：加勒比海和巴西的神经节海鞘（Pyura gangelion，萨维尼，1816年）和新物种β海鞘（Pyura beta）。在巴西，条纹海鞘在巴伊亚以南地区不存在，β海鞘在圣埃斯皮里图州到圣保罗州被发现，而神经节海鞘仅在圣埃斯皮里图州被发现，我们认为β海鞘和神经节海鞘在巴西的种群都是非本地的。
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