Project 3199: A. L. Vereshchaka, D. N. Kulagin, A. A. Lunina. 2019. A phylogenetic study of krill (Crustacea: Euphausiacea) reveals new taxa and co-evolution of morphological characters. Cladistics. 35 (2):150-172.
Specimen: Euphausia triacantha (unvouchered)
View: whole animal

Abstract

The first comprehensive phylogenetic study of Euphausiacea (all 86 valid species) is presented. It is based on four molecular markers and 168 morphological characters (including 58 characters of the petasma). Phylogenetic analyses support the monophyly and robustness of the families Bentheuphausidae and Euphausiidae and reveal three major clades for which we erect three new subfamilies: Thysanopodinae, Euphausiinae and Nematoscelinae. All genus-level clades are statistically supported (except Thysanopoda in molecular analyses), deeply nested within the subfamily-level clades, and encompass 14 new species groups. Copulatory structures have a major impact on tree topology in the morphological analysis, the removal of which resulted in only half the number of supported clades and genera. We revealed three groups of morphological characters, which are probably coupled with the same biological role and thus interlinked evolutionarily: (i) antennular peduncle and petasma (copulation); (ii) eyes and anterior thoracopods (feeding); and (iii) shape of carapace and pleon (defence). We analysed the evolutionary pathways of the clades into main oceanic biotopes and compared them with morphological adaptations most likely to be coupled with this process.


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Article DOI: 10.1111/cla.12239

Project DOI: 10.7934/P3199, http://dx.doi.org/10.7934/P3199
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 3 Documents
  • 88 Taxa
  • 1 Specimen
  • 168 Characters
Total size of project's media files: 27.07k

Download Project SDD File
Total scored cells: 14780
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 168
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 337
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:168/0
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MorphoBank Project 3199

    Authors' Institutions

    • Russian Academy of Sciences



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    Taxonomic Overview for Matrix 'M25554' (88 Taxa)

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    [1] Acanthephyra purpurea
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    [2] Funchalia villosa
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    [3] Bentheuphausia amblyops
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    [4] Euphausia americana
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    [5] Euphausia brevis
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    [6] Euphausia crystallorophias
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    [7] Euphausia diomedeae
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    [8] Euphausia distinguenda
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    [9] Euphausia eximia
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    [10] Euphausia fallax
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    [11] Euphausia frigida
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    [12] Euphausia gibba
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    [13] Euphausia gibboides
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    [14] Euphausia hanseni
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    [15] Euphausia hemigibba
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    [16] Euphausia krohnii
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    [17] Euphausia lamelligera
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    [18] Euphausia longirostris
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    [19] Euphausia lucens
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    [20] Euphausia mucronata
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    [21] Euphausia mutica
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    [22] Euphausia nana
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    [23] Euphausia pacifica
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    [24] Euphausia paragibba
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    [25] Euphausia pseudogibba
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    [26] Euphausia recurva
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    [27] Euphausia sanzoi
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    [28] Euphausia sibogae
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    [29] Euphausia similis
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    [30] Euphausia spinifera
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    [31] Euphausia superba
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    [32] Euphausia tenera
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    [33] Euphausia triacantha
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    [34] Euphausia vallentini
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    [35] Thysanopoda acutifrons
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    [36] Thysanopoda aequalis
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    [37] Thysanopoda astylata
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    [38] Thysanopoda cornuta
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    [39] Thysanopoda cristata
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    [40] Thysanopoda egregia
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    [41] Thysanopoda microphthalma
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    [42] Thysanopoda minyops
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    [43] Thysanopoda monacantha
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    [44] Thysanopoda obtusifrons
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    [45] Thysanopoda orientalis
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    [46] Thysanopoda pectinata
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    [47] Thysanopoda spinicaudata
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    [48] Thysanopoda tricuspidata
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    [49] Nematobrachion boopis
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    [50] Nematobrachion flexipes
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    [51] Nematobrachion sexspinosum
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    [52] Meganyctiphanes norvegica
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    [53] Nyctiphanes australis
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    [54] Nyctiphanes capensis
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    [55] Nyctiphanes couchii
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    [56] Nyctiphanes simplex
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    [57] Pseudeuphausia latifrons
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    [58] Pseudeuphausia sinica
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    [59] Thysanoessa gregaria
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    [60] Thysanoessa inermis
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    [61] Thysanoessa inspinata
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    [62] Thysanoessa longicaudata
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    [63] Thysanoessa longipes
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    [64] Thysanoessa macrura
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    [65] Thysanoessa parva
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    [66] Thysanoessa raschii
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    [67] Thysanoessa spinifera
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    [68] Thysanoessa vicina
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    [69] Tessarabrachion oculatum
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    [70] Nematoscelis atlantica
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    [71] Nematoscelis difficilis
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    [72] Nematoscelis gracilis
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    [73] Nematoscelis lobata
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    [74] Nematoscelis megalops
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    [75] Nematoscelis microps
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    [76] Nematoscelis tenella
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    [77] Stylocheiron abbreviatum
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    [78] Stylocheiron affine
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    [79] Stylocheiron armatum
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    [80] Stylocheiron carinatum
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    [81] Stylocheiron elongatum
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    [82] Stylocheiron indicum
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    [83] Stylocheiron insulare
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    [84] Stylocheiron longicorne
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    [85] Stylocheiron maximum
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    [86] Stylocheiron microphthalma
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    [87] Stylocheiron robustum
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    [88] Stylocheiron suhmi
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    Project views

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    Total project views15388
    Project overview1630
    Media views3098Media search (2585 views); M578236 (513 views);
    Documents list814
    Views for media list962
    Taxon list5458
    Specimen list1589
    Bibliography780
    Matrix views1057Matrix landing page (940 views); TNT matrix from author (117 views);




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project197
    Project downloads191
    Document downloads2Character list - descriptions from Supplemental Data (1 download); Character matrix from Supplemental Data (1 download);
    Matrix downloads4TNT matrix from author (4 downloads);