Project 1020: C. Wirkner, S. Richter. 2010. Evolutionary morphology of the circulatory system in Peracarida (Malacostraca; Crustacea). Cladistics. 26 (2):143-167.
Specimen: Euphausia superba (unvouchered)

Abstract

We demonstrate that by formulating guidelines for evolutionary morphology the transparency, reproducibility, and intersubject testability of evolutionary hypotheses based on morphological data can be enhanced. The five main steps in our concept of evolutionary morphology are (i) taxon sampling, (ii) structural analysis, (iii) character conceptualization, (iv) phylogenetic analysis, and (v) evolutionary interpretation. We illustrate this concept on the example of the morphology of the circulatory organs in peracarid Malacostraca. The analysis is based on recently published accounts in which detailed structural analyses were carried out, and on the older literature. Detailed conceptualizations of 22 characters of the circulatory system are given for 28 terminals. In a further step these characters are included in a recently revised matrix, resulting in 110 characters. The resulting parsimony analysis yielded a single most parsimonious tree with a length of 309 steps. The most significant results are that Peracarida is monophyletic, Amphipoda is the sister taxon to the Mancoida sensu stricto, the relict cave‚Äźdwelling taxa Thermosbaenacea, Spelaeogriphacea, and Mictocarididae form a monophylum and Tanaidacea is the sister group to a monophylum comprising Cumacea and Isopoda. The evolutionary analysis shows that the ground pattern features of the circulatory organs in Peracarida are a tubular heart extending through the whole thorax, a posterior aorta with lateral arteries, and a ventral vessel system. Important features within the Peracarida are the backward shift of the anterior border of the heart, the reduction of the ventral vessel system, and two patterns of cardiac arteries, one common to the amphipod and tanaidacean terminals, and one to the cumacean and isopod terminals.


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Article DOI: https://doi.org/10.1111/j.1096-0031.2009.00278.x

Project DOI: 10.7934/P1020, http://dx.doi.org/10.7934/P1020
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 28 Taxa
  • 1 Specimen
  • 110 Characters
Total size of project's media files: 52.66k

Download Project SDD File
Total scored cells: 2624
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 110
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 299
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:110/0
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MorphoBank Project 1020

    Authors' Institutions

    • Universitaet Rostock



    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    Maureen O'Leary
    Project Administrator
    Last logged in 09/13/13
    2811110002624
    (2379, 0, 245)
    000
    MorphoBank Curator
    Full membership
    Last logged in 09/13/13
    0000000
    (0, 0, 0)
    000
    Stefan Richter
    Full membership
    Last logged in Never
    0000000
    (0, 0, 0)
    000
    Christian Wirkner
    Full membership
    Last logged in Never
    0000000
    (0, 0, 0)
    000


    Taxonomic Overview for Matrix 'M2251' (28 Taxa)

    taxon unscored
    cells
    scored
    cells
    no cell
    support
    NPA
    cells
    "-" cellscell images labels on
    cell images
    member
    access
    [1] Nebalia bipes
    Last Modified in 12/05/13
    69494010004
    [2] Squilla oratoria
    Last Modified in 12/05/13
    410110105004
    [3] Melicertus kerathurus
    Last Modified in 12/05/13
    9979704004
    [4] Palaemonetes vulgaris
    Last Modified in 12/05/13
    7999904004
    [5] Anaspides tasmaniae
    Last Modified in 12/05/13
    4999907004
    [6] Euphausia superba
    Last Modified in 12/05/13
    7999904004
    [7] Tethysbaena argentarii
    Last Modified in 12/05/13
    157777018004
    [8] Lophogaster typicus
    Last Modified in 12/05/13
    13969601004
    [9] Eucopia unguiculata
    Last Modified in 12/05/13
    26797905004
    [10] Neognathophausia ingens
    Last Modified in 12/05/13
    31747405004
    [11] Boreomysis arctica
    Last Modified in 12/05/13
    22858503004
    [12] Neomysis integer
    Last Modified in 12/05/13
    110610603004
    [13] Orchestia cavimana
    Last Modified in 12/05/13
    010310307004
    [14] Hyalella azteca
    Last Modified in 12/05/13
    306767013004
    [15] Hyperia galba
    Last Modified in 12/05/13
    28757507004
    [16] Caprella mutica
    Last Modified in 12/05/13
    267272012004
    [17] Trogloleleupia leleupi
    Last Modified in 12/05/13
    375353020004
    [18] Spelaeogriphus lepidops
    Last Modified in 12/05/13
    286666016004
    [19] Mictocaris halope
    Last Modified in 12/05/13
    286666016004
    [20] Hemilamprops rosea
    Last Modified in 12/05/13
    277070013004
    [21] Diastylis rathkei
    Last Modified in 12/05/13
    12909008004
    [22] Leucon nasica
    Last Modified in 12/05/13
    207777013004
    [23] Tanais dulongii
    Last Modified in 12/05/13
    310310304004
    [24] Apseudes bermudeus
    Last Modified in 12/05/13
    148483013004
    [25] Neotanais sp.
    Last Modified in 12/05/13
    296868013004
    [26] Paramphisopus palustris
    Last Modified in 12/05/13
    23808007004
    [27] Porcellio scaber
    Last Modified in 12/05/13
    5979708004
    [28] Asellus aquaticus
    Last Modified in 12/05/13
    210210206004


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    type number of views Individual items viewed (where applicable)
    Total project views26687
    Project overview3992
    Media views4889Media search (4089 views); M307059 (800 views);
    Specimen list2133
    Taxon list12399
    Bibliography916
    Matrix views2357Matrix landing page (2128 views); Matrix (229 views);
    Documents list1




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    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project264
    Project downloads260
    Matrix downloads4Matrix (4 downloads);