Project 740: C. Fišer, B. Sket, P. Trontelj. 2008. A phylogenetic perspective on 160 years of troubled taxonomy of Niphargus (Crustacea: Amphipoda). Zoologica Scripta. 37 (6):665–680.
Specimen: Niphargus kochianus (unvouchered)

Abstract

Niphargus is the largest genus of freshwater amphipods. Its systematics from the species to the family level has always been problematic. This study is the first comprehensive phylogenetic treatment of the chiefly subterranean group in 160 years of its taxonomic history. It includes 103 niphargid species plus outgroups, representing about one-third of all nominal species. The samples originated mainly from type localities or adjacent sites and covered most of the morphological variability of the genus. Character sampling included nuclear 28S and mitochondrial 12S rDNA sequences, and 122 morphological characters. Quantitative morphological traits were coded using two alternative methods. The first one searches for gaps in the variability range of each character, while the second one uses absolute differences between the standardized raw data as weights. Different data sets yielded alternative topologies. All data support the monophyly of Niphargidae, while Niphargopsis— another niphargid genus — was consistently nested within Niphargus, loosing justification for its separate status. We predict a similar fate for all or most of the remaining six small niphargid genera, which were not yet scrutinized phylogenetically. Different topologies agreed in species composition of five large, well-supported clades, although the hierarchic relationships between them remain unresolved. These clades reject all previously proposed taxonomic subdivisions of Niphargus, implying a high degree of morphological homoplasy that renders any morphology-based groups questionable. The clade members are distributed within well-established zoogeographical regions that do not exceed 1300 km across the longest diagonal. These results provide a framework for future studies on niphargid systematics, the evolution of endemism and cryptic diversity in subterranean environments, the mechanisms leading to exceptional morphological heterogeneity, historical biogeography, and applied ecological issues.


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Project DOI: 10.7934/P740, http://dx.doi.org/10.7934/P740
This project containsMatrices
  • 3 Media
  • 1 Matrix
  • 2 Documents
  • 89 Taxa
  • 2 Specimens
  • 78 Characters
Total size of project's media files: 2 MB

Download Project SDD File
Total scored cells: 7239
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 78
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 218
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:78/0
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MorphoBank Project 740


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    Taxonomic Overview for Matrix 'M1669' (89 Taxa)

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    [1] Gammarus fossarum
    Last Modified in 12/05/13
    0717008003
    [2] Niphargus hvarensis-cf.mlini
    Last Modified in 12/05/13
    0827800003
    [3] Niphargus orcinus
    Last Modified in 12/05/13
    0787800003
    [4] Niphargus longiflagellum
    Last Modified in 12/05/13
    0827800003
    [5] Niphargus pachytelson
    Last Modified in 12/05/13
    0827800003
    [6] Niphargus steueri
    Last Modified in 12/05/13
    0797800003
    [7] Niphargus subtypicus
    Last Modified in 12/05/13
    0827800003
    [8] Niphargus kolombatovici
    Last Modified in 12/05/13
    0827800003
    [9] Niphargus liburnicus
    Last Modified in 12/05/13
    0797800003
    [10] Niphargus rejici
    Last Modified in 12/05/13
    2777600003
    [11] Niphargus jadranko
    Last Modified in 12/05/13
    0827800003
    [12] Niphargus balcanicus
    Last Modified in 12/05/13
    0807800003
    [13] Niphargus dolichopus
    Last Modified in 12/05/13
    0797800003
    [14] Niphargus croaticus
    Last Modified in 12/05/13
    0807800003
    [15] Niphargus redenseki
    Last Modified in 12/05/13
    0817800003
    [16] Niphargus arbiter
    Last Modified in 12/05/13
    0807800003
    [17] Niphargus arbiter-cf. krk
    Last Modified in 12/05/13
    0797800003
    [18] Niphargus dabarensis
    Last Modified in 12/05/13
    0787800003
    [19] Niphargus salonitanus
    Last Modified in 12/05/13
    0807800003
    [20] Niphargus vjetrenicensis
    Last Modified in 12/05/13
    0807800003
    [21] Niphargus bilecanus
    Last Modified in 12/05/13
    0847800003
    [22] Niphargus lunaris
    Last Modified in 12/05/13
    0787800003
    [23] Niphargus trullipes
    Last Modified in 12/05/13
    0817800003
    [24] Niphargus hercegovinensis
    Last Modified in 12/05/13
    0817800003
    [25] Niphargus zavalanus
    Last Modified in 12/05/13
    0787800003
    [26] Niphargus lourensis
    Last Modified in 12/05/13
    0787800003
    [27] Niphargus hebereri
    Last Modified in 12/05/13
    0817800003
    [28] Niphargus polymorphus
    Last Modified in 12/05/13
    0857800003
    [29] Niphargus hvarensis
    Last Modified in 12/05/13
    0807800003
    [30] Niphargus miljeticus
    Last Modified in 12/05/13
    0807800003
    [31] Niphargus podgoricensis
    Last Modified in 12/05/13
    0817800003
    [32] Niphargus stenopus
    Last Modified in 12/05/13
    1807700003
    [33] Niphargus brachytelson
    Last Modified in 12/05/13
    0787800003
    [34] Niphargus costozzae
    Last Modified in 12/05/13
    0807800003
    [35] Niphargus dalmatinus
    Last Modified in 12/05/13
    0787800003
    [36] Niphargus elegans
    Last Modified in 12/05/13
    0807800003
    [37] Niphargus forellii
    Last Modified in 12/05/13
    0807800003
    [38] Niphargus gabrovceci
    Last Modified in 12/05/13
    0797800003
    [39] Niphargus hadzii
    Last Modified in 12/05/13
    0817800003
    [40] Niphargus illidzensis
    Last Modified in 12/05/13
    0837800003
    [41] Niphargus karamani
    Last Modified in 12/05/13
    0827800003
    [42] Niphargus kenki
    Last Modified in 12/05/13
    0787800003
    [43] Niphargus krameri
    Last Modified in 12/05/13
    1817700003
    [44] Niphargus likanus
    Last Modified in 12/05/13
    0847800003
    [45] Niphargus novomestanus
    Last Modified in 12/05/13
    0807800003
    [46] Niphargus podpecanus
    Last Modified in 12/05/13
    0827800003
    [47] Niphargus puteanus
    Last Modified in 12/05/13
    0887800003
    [48] Niphargus slovenicus
    Last Modified in 12/05/13
    0797800003
    [49] Niphargus spinulifemur
    Last Modified in 12/05/13
    0807800003
    [50] Niphargus spoeckeri
    Last Modified in 12/05/13
    0807800003
    [51] Niphargus stygius
    Last Modified in 12/05/13
    0827800003
    [52] Niphargus sphagnicolus
    Last Modified in 12/05/13
    0847800003
    [53] Niphargus tatrensis
    Last Modified in 12/05/13
    0847800003
    [54] Niphargus timavi
    Last Modified in 12/05/13
    0817800003
    [55] Niphargus valvasori
    Last Modified in 12/05/13
    0847800003
    [56] Niphargus vinodolensis
    Last Modified in 12/05/13
    0817800003
    [57] Niphargus zagrebensis cf.
    Last Modified in 12/05/13
    01597800003
    [58] Niphargus zagrebensis-cf. gadina
    Last Modified in 12/05/13
    0817800003
    [59] Niphargus valachicus
    Last Modified in 12/05/13
    0867800003
    [60] Niphargus aquilex
    Last Modified in 12/05/13
    0827800003
    [61] Niphargus fontanus
    Last Modified in 12/05/13
    4777400003
    [62] Niphargus schellenbergi
    Last Modified in 12/05/13
    0867800003
    [63] Niphargus glenniei
    Last Modified in 12/05/13
    0797800003
    [64] Niphargus kochianus
    Last Modified in 12/05/13
    1837700003
    [65] Niphargus longicaudatus
    Last Modified in 12/05/13
    0867800003
    [66] Niphargus longicaudatus-cf.cres
    Last Modified in 12/05/13
    0817800003
    [67] Niphargus longicaudatus-cf.lisimachia
    Last Modified in 12/05/13
    0787800003
    [68] Niphargus longicaudatus-cf.gargano
    Last Modified in 12/05/13
    0817800003
    [69] Niphargus pasquinii
    Last Modified in 12/05/13
    0827800003
    [70] Niphargus rhenorhodanensis
    Last Modified in 12/05/13
    0807800003
    [71] Niphargus carniolicus
    Last Modified in 12/05/13
    0837800003
    [72] Niphargus pretneri
    Last Modified in 12/05/13
    0827800003
    [73] Niphargus tauri-cf.koblarska
    Last Modified in 12/05/13
    0807800003
    [74] Niphargus skopljensis
    Last Modified in 12/05/13
    0807800003
    [75] Niphargus stefanellii
    Last Modified in 12/05/13
    0827800003
    [76] Niphargus danconai
    Last Modified in 12/05/13
    2787600003
    [77] Niphargus virei
    Last Modified in 12/05/13
    0797800003
    [78] Niphargus jovanovici
    Last Modified in 12/05/13
    0787800003
    [79] Niphargus grandii
    Last Modified in 12/05/13
    0797800003
    [80] Niphargus serbicus
    Last Modified in 12/05/13
    0797800003
    [81] Niphargus multipennatus
    Last Modified in 12/05/13
    0787800003
    [82] Niphargus longidactylus
    Last Modified in 12/05/13
    2767600003
    [83] Niphargus sanctinaumi
    Last Modified in 12/05/13
    0797800003
    [84] Niphargus hrabei
    Last Modified in 12/05/13
    0827800003
    [85] Niphargus dimorphopus
    Last Modified in 12/05/13
    0807800003
    [86] Niphargus labacensis
    Last Modified in 12/05/13
    2767600003
    [87] Niphargus scopicauda
    Last Modified in 12/05/13
    0787800003
    [88] Niphargus pectinicauda
    Last Modified in 12/05/13
    0787800003
    [89] Niphargopsis caspary
    Last Modified in 12/05/13
    4747400003


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