Project 4779: L. E. Park, A. S. Cohen, K. Martens. 2002. Phylogenetic Relationships of Gomphocythere (Ostracoda) in Lake Tanganyika, East Africa. Journal of Crustacean Biology. 22 (1):15-27.
Abstract
We examined the distribution of 44 morphological characters for 16 extant species of an ostracode genus, Gomphocythere, in Africa, to test hypotheses concerning character development and speciation patterns. Using heuristic searches conducted with the phylogenetic reconstruction program PAUP (beta version, 4.0), we found 2 trees of 98 steps (CI=0.56). The skewness of tree length distribution reveals significant phylogenetic structure in the data. Nodes are supported by 1 to 11 character-state changes, and these character changes are sometimes reversed or paralleled elsewhere, accounting for much of the homoplasy in the reconstructions. By systematically removing both hard- and soft-part characters in separate analyses, hard-part characters were found to be far more homoplasious in their distribution across the phylogenetic tree, while soft parts are minimally homoplasious, suggesting that they are far more conservative while the hard parts are more prone to ecophenotypic variation. This phylogeny provides the basis for evaluating speciation mechanisms and the role of ecological factors in the diversification of ostracodes in this lake system.
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Article DOI: 10.1163/20021975-99990205
Project DOI: 10.7934/P4779, http://dx.doi.org/10.7934/P4779
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 804 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 44 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 104 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:44/0 |
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MorphoBank Project 4779
MorphoBank Project 4779
- Creation Date:
26 July 2023 - Publication Date:
01 August 2023 - Project views: 2060
- Matrix downloads: 1
Authors' Institutions
- University of Arizona
- Royal Belgian Institute of Natural Sciences
- University of Akron
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Joyce Song Project Administrator | 19 | 1 | 1 | 44 | 0 | 0 | 804 (804, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M29388' (19 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Gomphocythere aethiopis Last Modified in 07/26/23 | 9 | 35 | 35 | 0 | 0 | 0 | 0 | 1 |
[2] † Gomphocythere alata Last Modified in 07/26/23 | 1 | 43 | 43 | 0 | 0 | 0 | 0 | 1 |
[3] † Gomphocythere angulata Last Modified in 07/26/23 | 2 | 42 | 42 | 0 | 0 | 0 | 0 | 1 |
[4] † Gomphocythere angusta Last Modified in 07/26/23 | 16 | 28 | 28 | 0 | 0 | 0 | 0 | 1 |
[5] † Gomphocythere capensis Last Modified in 07/26/23 | 0 | 44 | 44 | 0 | 0 | 0 | 0 | 1 |
[6] † Gomphocythere coheni Last Modified in 07/26/23 | 1 | 43 | 43 | 0 | 0 | 0 | 0 | 1 |
[7] † Gomphocythere cristata Last Modified in 07/26/23 | 0 | 44 | 44 | 0 | 0 | 0 | 0 | 1 |
[8] † Gomphocythere curta Last Modified in 07/26/23 | 0 | 44 | 44 | 0 | 0 | 0 | 0 | 1 |
[9] † Gomphocythere downingi Last Modified in 07/26/23 | 0 | 44 | 44 | 0 | 0 | 0 | 0 | 1 |
[10] † Gomphocythere lenis Last Modified in 07/26/23 | 0 | 44 | 44 | 0 | 0 | 0 | 0 | 1 |
[11] † Gomphocythere obtusata Last Modified in 07/26/23 | 0 | 44 | 44 | 0 | 0 | 0 | 0 | 1 |
[12] † Gomphocythere ortali Last Modified in 07/26/23 | 0 | 44 | 44 | 0 | 0 | 0 | 0 | 1 |
[13] † Gomphocythere parcedilatata Last Modified in 07/26/23 | 0 | 44 | 44 | 0 | 0 | 0 | 0 | 1 |
[14] † Gomphocythere simplex Last Modified in 07/26/23 | 0 | 44 | 44 | 0 | 0 | 0 | 0 | 1 |
[15] † Gomphocythere wilsoni Last Modified in 07/26/23 | 1 | 43 | 43 | 0 | 0 | 0 | 0 | 1 |
[16] † Gomphocythere woutersi Last Modified in 07/26/23 | 0 | 44 | 44 | 0 | 0 | 0 | 0 | 1 |
[17] † Cytheridella chariessa Last Modified in 07/26/23 | 2 | 42 | 42 | 0 | 0 | 0 | 0 | 1 |
[18] † Leucocythere Last Modified in 07/26/23 | 0 | 44 | 44 | 0 | 0 | 0 | 0 | 1 |
[19] † Limnocythere dadayi Last Modified in 07/26/23 | 0 | 44 | 44 | 0 | 0 | 0 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 2060 | |
Project overview | 199 | |
Specimen list | 290 | |
Media views | 546 | Media search (467 views); M890419 (79 views); |
Bibliography | 115 | |
Documents list | 146 | |
Views for media list | 174 | |
Taxon list | 438 | |
Matrix views | 152 | Matrix landing page (144 views); Matrix (8 views); |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 1 | |
Matrix downloads | 1 | Matrix (1 download); |