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‘A posteriori’ searching for phenotypic characters to describe new cryptic species of sponges revealed by molecular markers (Dictyonellidae : Scopalina).
|Authors:||Blanquer, Andrea ; Uriz, María Jesús|
|Citation:||Invertebrate Systematics 22 (5) : 489-502 (2008)|
|Abstract:||Cryptic speciation is repeatedly reported in sponge taxonomic studies. Most of the cryptic species, which were revealed by molecular markers, have never been formally described owing to the difﬁculty in ﬁnding diagnostic phenotypic characters. A previous molecular study revealed four genetically distinct species that had been misidentiﬁed as Scopalina lophyropoda Schmidt. One species was S. lophyropoda sensu stricto, whereas the other three were new species. Here, the three new species are formally described after careful searching for discriminatory phenotypic characters. The new species are Scopalina blanensis, sp. nov. from the north-western Mediterranean, S. ceutensis, sp. nov. from the Mediterranean coasts of Africa (Atlantic waters) and S. canariensis, sp. nov. from the Canary Islands, Atlantic Ocean. All of them are at ﬁrst sight morphologically similar and inhabit shallow environments with resuspended sediment. However, a closer examination allowed us to ﬁnd some differential features: e.g. the amount of spongin embedding the spicules, the degree of complexity of the skeletal tracts, the size and curvature of the styles, the growth habit and the colour tinge. Furthermore, an identiﬁcation key to the Atlanto-Mediterranean Scopalina species is presented. The differences between the genera Scopalina, Ulosa and Dictyonella are also discussed.|
|Description:||14 páginas, 7 figuras, 1 tabla.|
|Publisher version (URL):||http://dx.doi.org/10.1071/IS07004|
|Appears in Collections:||(CEAB) Artículos|
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