Project 2448: P. M. Erwin, R. W. Thacker. 2007. Phylogenetic analyses of marine sponges within the order Verongida: a comparison of morphological and molecular data. Invertebrate Biology. 126 (3):220-234.
Abstract
Because the taxonomy of marine sponges is based primarily on morphological characters that can display a high degree of phenotypic plasticity, current classifications may not always reflect evolutionary relationships. To assess phylogenetic relationships among sponges in the order Verongida, we examined 11 verongid species, representing six genera and four families. We compared the utility of morphological and molecular data in verongid sponge systematics by comparing a phylogeny constructed from a morphological character matrix with a phylogeny based on nuclear ribosomal DNA sequences. The morphological phylogeny was not well resolved below the ordinal level, likely hindered by the paucity of characters available for analysis, and the potential plasticity of these characters. The molecular phylogeny was well resolved and robust from the ordinal to the species level. We also examined the morphology of spongin fibers to assess their reliability in verongid sponge taxonomy. Fiber diameter and pith content were highly variable within and among species. Despite this variability, spongin fiber comparisons were useful at lower taxonomic levels (i.e., among congeneric species); however, these characters are potentially homoplasic at higher taxonomic levels (i.e., between families). Our molecular data provide good support for the current classification of verongid sponges, but suggest a re-examination and potential reclassification of the genera Aiolochroia and Pseudoceratina. The placements of these genera highlight two current issues in morphology-based sponge taxonomy: intermediate character states and undetermined character polarity.Read the article »
Article DOI: 10.1111/j.1744-7410.2007.00092.x
Project DOI: 10.7934/P2448, http://dx.doi.org/10.7934/P2448
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 169 Total media associated with cells: 10 Total labels associated with cell media: 0 |
Characters | |
Total characters: 13 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 54 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:13/0 |
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MorphoBank Project 2448
MorphoBank Project 2448
- Creation Date:
23 June 2016 - Publication Date:
03 August 2016 - Project views: 37158
- Media downloads: 1
- Matrix downloads: 2
This research
supported by
Authors' Institutions
- University of Alabama
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
MorphoBank Curator Project Administrator | 13 | 10 | 10 | 13 | 0 | 0 | 169 (161, 0, 8) | 10 | 0 | 0 |
Taxonomic Overview for Matrix 'M24010' (13 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] Aiolochroia crassa Last Modified in 06/23/16 | 0 | 13 | 12 | 0 | 0 | 1 | 0 | 1 |
[2] Aplysina aerophoba Last Modified in 06/23/16 | 0 | 13 | 12 | 0 | 0 | 1 | 0 | 1 |
[3] Aplysina cauliformis Last Modified in 06/23/16 | 0 | 13 | 12 | 0 | 0 | 1 | 0 | 1 |
[4] Aplysina fistularis Last Modified in 06/23/16 | 0 | 13 | 13 | 0 | 0 | 0 | 0 | 1 |
[5] Aplysina fulva Last Modified in 06/23/16 | 0 | 13 | 12 | 0 | 0 | 1 | 0 | 1 |
[6] Aplysinella rhax Last Modified in 06/23/16 | 0 | 11 | 11 | 0 | 2 | 0 | 0 | 1 |
[7] Ianthella basta Last Modified in 06/23/16 | 0 | 13 | 12 | 0 | 0 | 1 | 0 | 1 |
[8] Pseudoceratina arabica Last Modified in 06/23/16 | 0 | 13 | 13 | 0 | 0 | 0 | 0 | 1 |
[9] Smenospongia aurea Last Modified in 06/23/16 | 0 | 10 | 8 | 0 | 3 | 2 | 0 | 1 |
[10] Verongula gigantea Last Modified in 06/23/16 | 0 | 13 | 12 | 0 | 0 | 1 | 0 | 1 |
[11] Verongula reiswigi Last Modified in 06/23/16 | 0 | 13 | 13 | 0 | 0 | 0 | 0 | 1 |
[12] Verongula rigida Last Modified in 06/23/16 | 0 | 13 | 12 | 0 | 0 | 1 | 0 | 1 |
[13] Chondrilla nucula Last Modified in 06/23/16 | 0 | 10 | 9 | 0 | 3 | 1 | 0 | 1 |
Project views
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Total project views | 37158 | |
Project overview | 3096 | |
Matrix views | 2044 | Matrix landing page (1842 views); Morphology matrix (202 views); |
Media views | 13601 | Media search (4271 views); M426159 (974 views); M426154 (1033 views); M426157 (1021 views); M426160 (605 views); M426156 (983 views); M426158 (875 views); M426162 (946 views); M423825 (953 views); M426161 (996 views); M426155 (944 views); |
Views for media list | 1391 | |
Bibliography | 1008 | |
Specimen list | 8842 | |
Taxon list | 7173 | |
Documents list | 3 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 270 | |
Project downloads | 267 | |
Matrix downloads | 2 | Morphology matrix (2 downloads); |
Media downloads | 1 | M426159 (1 download); |