Project 175: A. E. Syme, T. H. Oakley. 2011. Dispersal between Shallow and Abyssal Seas and Evolutionary Loss and Re-gain of Compound Eyes in Cylindroleberidid Ostracods: Conflicting Conclusions from Different Comparative Methods. Systematic Biology. Advance Access (10.1093/sysbio/syr085).
Specimen: Undetermined 1 undetermined 1 (:2)

Abstract

Complex organs such as eyes are commonly lost during evolution, but the time scale on which lost phenotypes could be reactivated is a matter of long-standing debate, with important implications for the molecular mechanisms of trait loss. Two phylogenetic approaches have been used to test whether regain of traits has occurred. One way is by comparison of nested, continuous time Markov models of trait evolution, an approaches that we term a tree-based tests. A second way to demonstrate statistical support for trait regain through use of node-based tests, using explicit estimation of ancestral node states. Here, we estimate new molecular and morphological phylogenies and use them to examine the possibility of eye regain and dispersal between shallow and abyssal seas during the history of cylindroleberidid ostracods, a family of about 200 species, comprising ed of both eyeless and sighted species. First, we confirmed that eye presence/absence is correlated with habitat depth. Parameter estimates from a phylogenetic model indicate that speciation is more rapid in deep-sea, eyeless clades compared to shallow sighted clades. In addition, we found that tree-based statistical tests usually indicated reversals, including both transitions from deep to shallow seas and re-gain of eyes. In contrast, node-based statistical tests usually failed to show significant support for reversals. These results also hold for simulated phylogenies, indicating they are not unique to the current dataset. We recommend that both tree-based and node-based tests should be examined before making conclusions about character reversal, and that ideally, alternative character histories should be tested using additional data, besides just the phylogenetic distribution of presence/absence of the characters.


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Project DOI: 10.7934/P175, http://dx.doi.org/10.7934/P175
This project containsMatrices
  • 2 Media
  • 1 Matrix
  • 1 Document
  • 205 Taxa
  • 3 Specimens
  • 125 Characters
Total size of project's media files: 3 MB

Download Project SDD File
Total scored cells: 10234
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 71
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 167
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:71/0
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MorphoBank Project 175


    Members

    member name taxa specimens media chars character
    media
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    notes  medialabels
    rules
    Todd Oakley
    Project Administrator
    Last logged in 01/23/12
    0000000
    (0, 0, 0)
    0000
    Maureen Admin
    Full membership
    Last logged in 02/01/12
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    (0, 0, 0)
    0000
    MorphoBank Curator
    Full membership
    Last logged in 02/01/12
    1210000
    (0, 0, 0)
    0000
    Anna Syme
    Full membership
    Last logged in 01/27/12
    3710540010234
    (10234, 0, 0)
    0000
    Jo Wolfe
    Full membership
    Last logged in 01/05/12
    0000000
    (0, 0, 0)
    0000


    Taxonomic Overview for Matrix 'M1045' (165 Taxa)

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    [1] Manawa staceyi
    Last Modified in 12/05/13
    46252500005
    [2] † Nymphatelina gravida
    Last Modified in 12/05/13
    58131300005
    [3] † Colymbosathon ecplecticos
    Last Modified in 12/05/13
    58131300005
    [4] † Triadocypris spitzbergensis
    Last Modified in 12/05/13
    57141400005
    [5] Vargula hilgendorfii
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    19535200005
    [6] Euphilomedes sordida
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    [7] Rutiderma apex
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    16555500005
    [8] Asteropteron fuscum
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    [9] Asteropterygion romei
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    [10] Asteropterygion setiferum
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    [11] Asteropterygion oculitristis
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    [12] Asteropterygion peterseni
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    [13] Asteropterygion dayi
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    [14] Asteropterygion thomassini
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    [15] Asteropterygion magnum
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    [16] Actinoseta hummelincki
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    [17] Actinoseta chelispara
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    [18] Actinoseta jonesi
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    [19] Asteropella mortenseni
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    [20] Asteropella slatteryi
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    [21] Asteropella sp. j57062
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    [22] Asteropella slatteryi j57060
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    [23] Asteropella slatteryi j57061
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    [24] Asteropella monambon
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    [25] Asteropella monambon j57059
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    [26] Asteropella kalkei
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    [27] Omegasterope upsilon
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    [28] Pteromeniscus intesi
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    [29] Microasteropteron parvum
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    [30] Macroasteropteron mindax
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    [31] Leuroleberis mackenziei
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    [32] Leuroleberis sharpei
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    [33] Leuroleberis surugaensis
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    [34] Alphaleberis alphathrix
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    [35] Amboleberis americana
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    [36] Cyclasterope fascigera
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    [37] Cyclasterope bisetosa
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    [38] Cycloleberis galatheae
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    [39] Cycloleberis lobiancoi
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    [40] Tetraleberis sp. j570561
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    [41] Tetraleberis pix
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    [42] Tetraleberis triplex
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    [43] Tetraleberis brevis
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    [44] Archasterope monothrix
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    [45] Archasterope verax
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    [46] Archasterope apex
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    [47] Archasterope quinquesetae
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    [48] Archasterope efficax
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    [49] Archasterope efficax j57064
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    [50] Archasterope bulla
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    [51] Archasterope altrix
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    [52] Archasterope dentata
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    [53] Archasterope antarctica
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    [54] Archasterope sp. j57065
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    [55] Bathyleberis babax
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    [56] Bathyleberis garthi
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    [57] Bathyleberis grossmani
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    [58] Bathyleberis hancocki
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    [59] Bathyleberis monothrix
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    [60] Bathyleberis oculata
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    [61] Bathyleberis oculata j57063
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    [62] Bathyleberis thrix
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    [63] Bathyleberis kurilensis
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    [64] Bathyleberis toxotes
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    [65] Bruuniella beta
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    [66] Bruuniella hazeli
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    [67] Bruuniella breviata
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    [68] Polyleberis mackenziei
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    [69] Cylindroleberis bacescui
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    [70] Cylindroleberis grimaldi
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    [71] Cylindroleberis minuta
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    [72] Cylindroleberis thailandica
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    [73] Cylindroleberis vibex
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    [74] Cylindroleberis variabilis
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    [75] Cylindroleberis verrucosa
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    [76] Cylindroleberis vix
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    [77] Cylindroleberis marranyin
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    [78] Cylindroleberis sp. j57069
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    [79] Diasterope wirraka
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    [80] Diasterope grisea
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    [81] Diasterope schmitti
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    [82] Diasterope pilosa
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    [83] Diasterope procax
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    [84] Dolasterope johanseni
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    [85] Domromeus merx
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    9626200005
    [86] Domromeus heptathrix
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    [87] Heptonema latex
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    [88] Heptonema latum
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    [89] Heptonema homelix
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    [90] Heptonema serratum
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    [91] Homasterope curta
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    [92] Homasterope trebax
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    [93] Monasterope bex
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    11606000005
    [94] Parasterope gamurru j53224
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    [95] Parasterope gamurru j53225
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    [96] Parasterope aberrata
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    [97] Parasterope anommata
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    [98] Parasterope antyx
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    [99] Parasterope crinita
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    10616100005
    [100] Parasterope maddocksae
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    8636300005
    [101] Parasterope mauritiana
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    9626200005
    [102] Parasterope mckenziei
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    10616100005
    [103] Parasterope micrommata
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    [104] Parasterope muelleri
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    [105] Parasterope pacifica
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    [106] Parasterope physinx
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    [107] Parasterope pollex
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    [108] Parasterope prolixa
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    5666600005
    [109] Parasterope pseudoquadrata
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    [110] Parasterope sequax
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    [111] Parasterope sohni
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    8636300005
    [112] Parasterope styx
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    6656500005
    [113] Parasterope whatleyi
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    [114] Parasterope zamboangae
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    9626200005
    [115] Parasterope zeta
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    [116] Parasterope sp. j57072
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    9626200005
    [117] Undetermined 2 undetermined 2 j57076
    Last Modified in 12/05/13
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    [118] Undetermined 3 undetermined 3 j57075
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    [119] Undetermined 4 undetermined 4 j57074
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    [120] Undetermined 5 undetermined 5 j57073
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    [121] Postasterope barensi
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    8646300005
    [122] Postasterope barensi j57078
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    [123] Postasterope barensi j57079
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    [124] Postasterope corrugata
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    [125] Postasterope corrugata j57080
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    [126] Postasterope messingi
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    [127] Postasterope messingi j57077
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    [128] Postasterope abaco
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    [129] Prionotoleberis gyion
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    [130] Prionotoleberis lux
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    [131] Prionotoleberis pax
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    [132] Prionotoleberis rex
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    [133] Prionotoleberis salomani
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    [134] Skogsbergiella pax
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    [135] Skogsbergiella plocus
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    [136] Skogsbergiella scotti
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    [137] Skogsbergiella senex
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    [138] Skogsbergiella spinifera
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    [139] Skogsbergiella sp. zmhk42206
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    [140] Synasterope implumis
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    [141] Synasterope arnaudi
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    [142] Synasterope bassana
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    [143] Synasterope bensoni
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    [144] Synasterope brachythrix
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    [145] Synasterope browni
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    [146] Synasterope calix
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    [147] Synasterope cushmani
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    [148] Synasterope helix
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    [149] Synasterope hirpex
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    [150] Synasterope longiseta
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    [151] Synasterope mystax
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    [152] Synasterope polythrix
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    [153] Synasterope psitticina
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    [154] Synasterope serrata
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    [155] Synasterope setispara
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    [156] Synasterope sp. j57067
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    [157] Synasterope sp. j57066
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    [158] Xandarasterope storthynx
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    [159] Xandarasterope trux
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    [160] Xenoleberis bex
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    [161] Xenoleberis californica
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    [162] Xenoleberis yamadai
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    [163] Undetermined 7 undetermined 7 zmhk42207
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    [164] Archasterope bulla ds 6
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    [165] Undetermined 6 undetermined 6 zmhk42209
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    Project views

    type number of views Individual items viewed (where applicable)
    Total project views26193
    Project overview2630
    Matrix views1586Matrix landing page (1390 views); Cylindroleberididae morphlogy matrix Feb 2011 (196 views);
    Media views4332Media search (3063 views); M101996 (692 views); M11247 (577 views);
    Specimen list2492
    Taxon list13201
    Bibliography737
    Documents list1215




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project218
    Media downloads2M101996 (1 download); M11247 (1 download);
    Project downloads213
    Matrix downloads3Cylindroleberididae morphlogy matrix Feb 2011 (3 downloads);