@article {Adami2013,
	title = {{Phenotypic Differentiation of Ecologically Significant Brachidontes Species Co-Occurring in Intertidal Mussel Beds from the Southwestern Atlantic}},
	journal = {Malacologia},
	volume = {56},
	number = {1 \& 2},
	year = {2013},
	pages = {59{\textendash}67},
	publisher = {Institute of Malacology},
	abstract = {Intertidal communities from rocky shores of the southwestern Atlantic are dominated by two small-sized mussels of the genus Brachidontes, B. rodriguezii (d{\textquoteright}Orbigny, 1846) and B. purpuratus (Lamarck, 1819). Their generic placement, separation of specimens based on external conchological characters and geographic distribution are problematic. We conducted a comparative study based on extensive collections and observations at 14 sites along the coasts of the southwestern Atlantic, complemented by the study of materials from museum collections. Well-preserved specimens of the two species are distinguishable on the basis of shell characters, some of them previously ignored, over their combined latitudinal range.},
	issn = {0076-2997},
	doi = {10.4002/040.056.0204},
	url = {http://dx.doi.org/10.4002/040.056.0204},
	author = {Adami, Mariana L. and Pastorino, Guido and Orensanz, J. M.}
}
@article {Boury-Esnault2013,
	title = {{The integrative taxonomic approach applied to porifera: a case study of the homoscleromorpha.}},
	journal = {Integrative and comparative biology},
	volume = {53},
	number = {3},
	year = {2013},
	pages = {416{\textendash}27},
	abstract = {The two main scientific tasks of taxonomy are species{\textquoteright} delineation and classification. These two tasks are often treated differently, with classification accomplished by newly-developed phylogenetic methods, often based on molecular sequences, while delimitation of species is conducted by what is often considered to be an "old-fashioned" typological approach based on morphological description. A new "integrative taxonomy" has been proposed which maintains that species delimitation should be a multidisciplinary undertaking combining several independent datasets. Here we argue that the same principle is relevant to the classification of species. In the past 20 years, we assembled various datasets based on the external morphology, anatomy, cytology, spicule shapes, geography, reproduction, genetic sequences, and metabolomics of homoscleromorph sponges. We show how we used these datasets to describe new species of homoscleromorph sponges and to elucidate their phylogenetic relationships and their phylogenetic position within the phylum Porifera.},
	issn = {1557-7023},
	doi = {10.1093/icb/ict042},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/23670632},
	author = {Boury-Esnault, Nicole and Lavrov, Dennis V and Ruiz, C{\'e}sar a and P{\'e}rez, Thierry}
}
@article {Swierts2013,
	title = {{Lock, stock and two different barrels: comparing the genetic composition of morphotypes of the indo-pacific sponge Xestospongia testudinaria.}},
	journal = {PloS one},
	volume = {8},
	number = {9},
	year = {2013},
	month = {jan},
	pages = {e74396},
	publisher = {Public Library of Science},
	abstract = {The giant barrel sponge Xestospongiatestudinaria is an ecologically important species that is widely distributed across the Indo-Pacific. Little is known, however, about the precise biogeographic distribution and the amount of morphological and genetic variation in this species. Here we provide the first detailed, fine-scaled (<200 km(2)) study of the morphological and genetic composition of X. testudinaria around Lembeh Island, Indonesia. Two mitochondrial (CO1 and ATP6 genes) and one nuclear (ATP synthase $\beta$ intron) DNA markers were used to assess genetic variation. We identified four distinct morphotypes of X. testudinaria around Lembeh Island. These morphotypes were genetically differentiated with both mitochondrial and nuclear markers. Our results indicate that giant barrel sponges around Lembeh Island, which were all morphologically identified as X. testudinaria, consist of at least two different lineages that appear to be reproductively isolated. The first lineage is represented by individuals with a digitate surface area, CO1 haplotype C5, and is most abundant around the harbor area of Bitung city. The second lineage is represented by individuals with a predominantly smooth surface area, CO1 haplotype C1 and can be found all around Lembeh Island, though to a lesser extent around the harbor of Bitung city. Our findings of two additional unique genetic lineages suggests the presence of an even broader species complex possibly containing more than two reproductively isolated species. The existence of X. testudinaria as a species complex is a surprising result given the size, abundance and conspicuousness of the sponge.},
	issn = {1932-6203},
	doi = {10.1371/journal.pone.0074396},
	url = {http://dx.plos.org/10.1371/journal.pone.0074396},
	author = {Swierts, Thomas and Peijnenburg, Katja T C A and de Leeuw, Christiaan and Cleary, Daniel F R and H{\"o}rnlein, Christine and Setiawan, Edwin and W{\"o}rheide, Gert and Erpenbeck, Dirk and de Voogd, Nicole J},
	editor = {Voolstra, Christian~R}
}
