Advanced search
1 file | 1.93 MB

Relevance of an integrative approach for taxonomic revision in sponge taxa: case study of the shallow-water Atlanto-Mediterranean Hexadella species (Porifera, Ianthellidae, Verongida)

(2012) INVERTEBRATE SYSTEMATICS. 26(3). p.230-248
Author
Organization
Abstract
The identification of sponges lacking mineral skeleton is always highly challenging, especially for Hexadella species which are also fiberless. Recently, the yellow species Hexadella pruvoti Topsent was identified as a cryptic species complex while the pink colored Hexadella racovitzai Topsent showed two highly divergent lineages. We performed a COI phylogenetic reconstruction using 27 new Mediterranean Hexadella samples in order to confirm the presence of divergent lineages within both shallow-water species. Specimens were described with an integrative approach combining morphological and cytological investigations, biochemical profiling and assessment of natural toxicity in order to identify diagnostic characters for each taxon. H. topsenti sp. nov. is distinguished from H. racovitzai by its color, its surface network shape, divergent secondary metabolite patterns and toxicity values. H. crypta sp. nov. differs from H. pruvoti by a different encrusting growth form when alive, and by distinctively coloring the ethanol fixative solution. In addition, H. pruvoti and H. crypta show different types of cells with inclusions as well as distinct metabolic fingerprints. Natural toxicity values however, do not permit to separate H. pruvoti and H. crypta. Our work shows that only the use of a combination of complementary tools can provide relevant descriptions for some problematic taxa.
Keywords
TOXICITY BIOASSAY, HOMOSCLEROMORPHA, BROMOTYROSINE DERIVATIVES, FAUNA, Taxonomy, Phylogeny, Morphology, Cytology, Biochemistry, Toxicity, Sponges, BANK, Hexadella, DEMOSPONGIAE, GENUS, DIVERSITY

Downloads

    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 1.93 MB

Citation

Please use this url to cite or link to this publication:

Chicago
Reveillaud, Julie, Céline Allewaert, Thierry Perez, Jean Vacelet, Bernard Banaigs, and Ann Vanreusel. 2012. “Relevance of an Integrative Approach for Taxonomic Revision in Sponge Taxa: Case Study of the Shallow-water Atlanto-Mediterranean Hexadella Species (Porifera, Ianthellidae, Verongida).” Invertebrate Systematics 26 (3): 230–248.
APA
Reveillaud, J., Allewaert, C., Perez, T., Vacelet, J., Banaigs, B., & Vanreusel, A. (2012). Relevance of an integrative approach for taxonomic revision in sponge taxa: case study of the shallow-water Atlanto-Mediterranean Hexadella species (Porifera, Ianthellidae, Verongida). INVERTEBRATE SYSTEMATICS, 26(3), 230–248.
Vancouver
1.
Reveillaud J, Allewaert C, Perez T, Vacelet J, Banaigs B, Vanreusel A. Relevance of an integrative approach for taxonomic revision in sponge taxa: case study of the shallow-water Atlanto-Mediterranean Hexadella species (Porifera, Ianthellidae, Verongida). INVERTEBRATE SYSTEMATICS. 2012;26(3):230–48.
MLA
Reveillaud, Julie, Céline Allewaert, Thierry Perez, et al. “Relevance of an Integrative Approach for Taxonomic Revision in Sponge Taxa: Case Study of the Shallow-water Atlanto-Mediterranean Hexadella Species (Porifera, Ianthellidae, Verongida).” INVERTEBRATE SYSTEMATICS 26.3 (2012): 230–248. Print.
@article{2119062,
  abstract     = {The identification of sponges lacking mineral skeleton is always highly challenging, especially for Hexadella species which are also fiberless. Recently, the yellow species Hexadella pruvoti Topsent was identified as a cryptic species complex while the pink colored Hexadella racovitzai Topsent showed two highly divergent lineages. We performed a COI phylogenetic reconstruction using 27 new Mediterranean Hexadella samples in order to confirm the presence of divergent lineages within both shallow-water species. Specimens were described with an integrative approach combining morphological and cytological investigations, biochemical profiling and assessment of natural toxicity in order to identify diagnostic characters for each taxon. H. topsenti sp. nov. is distinguished from H. racovitzai by its color, its surface network shape, divergent secondary metabolite patterns and toxicity values. H. crypta sp. nov. differs from H. pruvoti by a different encrusting growth form when alive, and by distinctively coloring the ethanol fixative solution. In addition, H. pruvoti and H. crypta show different types of cells with inclusions as well as distinct metabolic fingerprints. Natural toxicity values however, do not permit to separate H. pruvoti and H. crypta. Our work shows that only the use of a combination of complementary tools can provide relevant descriptions for some problematic taxa.},
  author       = {Reveillaud, Julie and Allewaert, C{\'e}line and Perez, Thierry and Vacelet, Jean and Banaigs, Bernard and Vanreusel, Ann},
  issn         = {1445-5226},
  journal      = {INVERTEBRATE SYSTEMATICS},
  keyword      = {TOXICITY BIOASSAY,HOMOSCLEROMORPHA,BROMOTYROSINE DERIVATIVES,FAUNA,Taxonomy,Phylogeny,Morphology,Cytology,Biochemistry,Toxicity,Sponges,BANK,Hexadella,DEMOSPONGIAE,GENUS,DIVERSITY},
  language     = {eng},
  number       = {3},
  pages        = {230--248},
  title        = {Relevance of an integrative approach for taxonomic revision in sponge taxa: case study of the shallow-water Atlanto-Mediterranean Hexadella species (Porifera, Ianthellidae, Verongida)},
  url          = {http://dx.doi.org/10.1071/IS11044},
  volume       = {26},
  year         = {2012},
}

Altmetric
View in Altmetric
Web of Science
Times cited: