Hons Project - Robyn Cuthbertson - Inferring Phylogenies and Distributions of Upper-Andean and Amazonian Frogs From the Genus Pristimantis Using New and Previously Published Sequence

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    Inferring phylogenies and distributions of upper-Andean and

    Amazonian frogs from the genusPristimantis using new and

    previously published sequence data.

    Pristimantis acuminatus

    Name: Robyn Cuthbertson

    Matriculation number: 0906976c

    Level 4 Honours Project

    Supervisor: Dr Kathryn Elmer

    Submission date: 22 March 2013

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    ContentsAbstract ................................................................................................................................ 2

    Introduction .......................................................................................................................... 3

    Methods ................................................................................................................................ 6

    Data collection .................................................................................................................. 6

    Phylogenetic analyses........................................................................................................ 6

    Results .................................................................................................................................. 8

    Convergence assessment ................................................................................................... 8

    Discussion ........................................................................................................................... 13

    Phylogenetic relationships ............................................................................................... 13

    Model and analyses ......................................................................................................... 17

    Convergence on stationarity ............................................................................................ 18

    Wider implications .......................................................................................................... 18

    Acknowledgements ............................................................................................................. 20

    References .......................................................................................................................... 21

    Appendix I .......................................................................................................................... 28

    Appendix II ........................................................................................................................ 34

    Appendix III ....................................................................................................................... 36

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    Abstract

    The genusPristimantis is the largest of the amphibian genuses with 454 species

    currently described and this number is likely to increase with more recently developed

    techniques for recognition of cryptic species and the introduction of new molecular

    techniques. The deep evolutionary history has been examined and the evolutionary

    relationship withEleutherodactylus has been discussed by Heinicke, Duellman and Hedges

    (2007), inferring thatPristimantis split from the Eleutherodactylines 37 million years ago,

    with rapid speciation 24 million years ago and also with the uplift of the Andes, where

    mountain building first appeared around 23 Ma, and the most pronounced peaks followed

    between 12 and 4.5 Ma (Hoorn et al., 2010).

    My study involved the alignment and phylogenetic analysis of 112 sequences,

    followed by the investigation of the distributions of species in a selected clade. This revealed

    some relationships between species which support those found by Heinicke, Duellman and

    Hedges (2007) and some which differnew evolutionary relationships may be the result of

    the introduction of 30 new sequences into the analyses. Wide distribution of some of the

    species possibly suggest cryptic species complexes and indicate further studies need to be

    done in order to fully delimitate species such asPristimantis ockendeni andPristimantis

    chalceus.

    The implications for my study and those similar, for example Heinicke, Duellman and

    Hedges (2007), on the knowledge of evolutionary history and relationships can have an

    impact on the knowledge of the methods of diversification (for example due to topographical

    complexities) which in turn can give an indication of the history of the landscape. It can also

    affect conservation as subdivision of distributions due to delimitation of species can change

    the species conservation requirements.

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    3

    Introduction

    Frogs of the genusPristimantis (Jimnez de la Espada 1870),the South American rain

    frogs, are distributed mainly in Central and South America.They are nocturnal and primarily

    arboreal (Kok and Kalamandeen, 2008), and are small in length like most direct developing

    frogs (range from 20-50mm) (Heinicke, Duellman and Hedges, 2007).They are also

    polychromatic which can cause problems in identification (Kok and Kalamandeen, 2008).

    Pristimantisis widely accepted to be the most speciose genus of the Neotropical amphibia,

    with an estimated species number of 454 (AmphibiaWeb 2013).This can be validated with

    comparison of other genuses in the family Strabomantidae: for example the genus Oreobates

    with 21 species listed, and the genusBryophrynewith just eight (AmphibiaWeb, 2013).

    With the increasing availability of molecular information it has become of great

    interest to researchers to utilise this information in order to infer phylogenies, the overall aim

    of which is to discover the topology of the tree and infer evolutionary relationships.

    However, the correct phylogenies can be affected by the model chosen to investigate the

    evolutionary history (Bollback, 2002).There are a variety of different methods, each with

    strengths and weaknesses (Yang and Rannala, 2012).The process of molecular phylogenetics

    that is, using DNA sequences to investigate the evolutionary histories and relationships

    between species (Hay, Ruvinsky, Hedges, and Maxson, 1995; Darst and Cannatella, 2003;

    Fouquet et al., 2007)allows for more precise phylogenetic inference than morphological

    classifications can allow.

    Species concepts have been discussed recently in terms of reclassifying species, with

    changes from the typical biological species concept to phylogenetic and evolutionary

    http://amphibiaweb.org/cgi-bin/amphib_query?table=amphib&special=one_record&where-genus=Bryophryne&where-species=abramalagaehttp://amphibiaweb.org/cgi-bin/amphib_query?table=amphib&special=one_record&where-genus=Bryophryne&where-species=abramalagaehttp://amphibiaweb.org/cgi-bin/amphib_query?table=amphib&special=one_record&where-genus=Bryophryne&where-species=abramalagaehttp://amphibiaweb.org/cgi-bin/amphib_query?table=amphib&special=one_record&where-genus=Bryophryne&where-species=abramalagae
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    species concepts (Hanken, 1999). South America has many areas of high species diversity

    (Myers 2000), with important protected areas such as Manu in Peru and Madidi in Bolivia to

    preserve niche biodiversity hotspots (Padial and de la Riva, 2009).There are numerous

    hypotheses as to why these areas of diversity exist, such as riverine barriers (Gascon,

    Lougheed and Bogart, 1996) and paleogeographic characteristics (Rsnen et al., 1996;

    Hughes and Eastwood, 2006).Wang et al., (2009) discuss two causes of speciation: firstly,

    where geographic and physical landscape barriers restrict the movement of individuals and so

    constrain gene flow between populations, in turn causing genetic drift and/or selection to

    result in divergence of phenotype and secondly, where gene flow against immigrant

    phenotypes is the result of natural or sexual selection, which causes divergence, and

    demonstrates that geographic isolation, although thought to be the primary reason for

    diversification and speciation, may not be as fundamental a theory as previously thought.

    Generally, it is established that geography has had a major impact on species diversity in

    South America, especially in the Andes and Amazonia (Elmer, Dvila and Lougheed, 2007).

    Recently Heinicke, Duellman and Hedges (2007) refined the Eleutherodactylines into

    three cladesMiddle American, the Caribbean, and finally the South American clade.It is

    the later in whichPristimantisis included, and it has been inferred that this genus split from

    the rest of the Eleutherodactylines 37 million years ago (Heinicke, Duellman and Hedges,

    2007).The range ofPristimantisis central to the Andes, caused by changes in plate tectonics

    in the Palaeocene 65-34 million years ago (Hoorn et al., 2010).In terms of geological history

    this is very recent and it is apparent thatPristimantisbecame speciose in a short space of

    evolutionary time, diversifying rapidly from 24 million years ago (Heinicke, Duellman and

    Hedges, 2007).This idea is supported by changes in climate resulting in genetic isolation

    resulting in further speciation of the species and the pronounced uplift of the Andes in the last

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    124.5 million years (Hoorn et al., 2010).The genus invaded Central America on at least 11

    separate occasions, and some of these occurred before the suggested closing of the Isthmus of

    Panama (Pinto-Sanchez et al., 2012) around 3 million years ago (Heinicke, Duellman and

    Hedges, 2007)for example,Pristimantis ridenswas also established in Central America

    before the presence of the land bridge (Wang, Crawford and Bermingham, 2008), again

    consistent with the hypothesis of rapid radiation from South America.Arguments for high

    diversity of poison frogs in the Amazon basin due to rapid dispersal from neighbouring areas

    have also been made (Santos et al., 2009) and so this may also have occurred in Pristimantis.

    It is clear that even the current estimations ofPristimantis species numbers may be

    lower than the actual number of species present (Fouquet et al, 2007; Lehr, Moravec and

    Gagliardi Irrutia,2010) due to unexplored regions, polymorphic species, cryptic species and

    species that have extremely similar morphologies.Recent analyses of species in the

    Pristimantisgenus include those by Elmer and Cannatella (2008), Siqueira et al., (2008),

    Padial and de la Riva (2009), and Arteaga-Navarro and Guayasamin (2011), and with further

    work done in the area of phylogenetics and more scientific exploration in the region it is

    likely that there will be a continuation of these redefinitions of relationships in the genus.

    This study will attempt to determine the phylogenies of the South American clade of

    Pristimantis using recently acquired and previously-published sequence data, and

    comparisons with other papers will be made in order to infer the likelihood of the accuracy of

    results. Using Bayesian analyses, I will closer inspect a single clade in terms of altitude - in

    doing so I aim to understand better the patterns of diversity and species richness of the genus

    and investigate possible multi-complexes of species.

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    Methods

    Data collection

    This study used data from 121 sequences of 12S ribosomal RNA (12S) and 16S

    ribosomal RNA (16S) mitochondrial genes.Of these, 30 were new sequences were provided

    by Dr Kathryn Elmer (see Appendix II) and 91 were published sequences were downloaded

    from NCBI database (see Appendix I).The South American clade group formed by Heinicke

    et al., 2007 (species numbers 162-248) was the source for which accession numbers were

    chosen and the outgroup was selected from the same study (see Appendix I).

    Phylogenetic analyses

    The removal of one outgroup species and the joining of 12S and 16S sequences from

    the same species resulted in a total of 112 sequences analysed with a total of 1017 sites.The

    sequences were aligned using the default settings of the ClustalW option in Geneious 6.0.6

    (Biomatters, 2012), where the cost matrix used was IUB, the gap open cost was 15, and the

    gap extend cost was 6.66. MEGA 5.1 was used to extend the flanking regions of the

    sequences in order to make them the same length as 12S and 16S sequences have hyper

    variable regions which cannot be aligned.Ambiguous regions in the alignment were then

    removed using Gblocks 0.91b (Castresana, 2000), in which the default block parameters

    were: minimum number of sequences for a conserved position: 9; minimum number of

    sequences for a flank position: 14; maximum number of contiguous non-conserved positions:

    8; minimum length for a block: 10; allowed gap positions: 0.The resulting alignment was

    comprised of 1017 sites.The MrBayes plugin (Hulsenbeck and Ronquist, 2001) in Geneious

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    6.0.6 was used to perform Bayesian analyses to reconstruct phylogenies with the GTR + I +

    model of evolution (adhering to the methods used by Heinicke, Duellman and Hedges, 2007).

    Two parallel runs of the Monte Carlo Markov chain algorithm were conducted with

    1,100,000 generations (chain lengths) each.The burn-in length was 160,000 and branch

    lengths were unconstrained.The subsampling frequency was 200.

    The posterior output was examined to assess the convergence of likelihoods onto the

    stationary distribution of the two separate runs.A 50% consensus tree was formed using the

    resulting raw tree data (11002 trees) in Geneious 6.0.6 (Biomatters, 2012).The posterior

    probability (or clade credibility) values for the branch nodes were examined. Inferred

    relationships were examined.

    A clade encompassing 32 sequences was chosen for further analysisthis clade was

    chosen based on the high proportion of new sequence data and species of interest included.

    For this clade, the altitudinal ranges were obtained from AmphibiaWeb (2013), IUCN (2012)

    and from the individually collected specimen information.A bar graph was created to

    compare these altitudinal rangesto further investigate their biodiversity and possible

    relationships.

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    Results

    Convergence assessment

    The parameter estimates included the log likelihood score (LnL), total tree length

    (TL), the 4 stationary state frequencies (piT, piA, piG, and piC) and the 6 reversible

    substitution rates (rA-T, rA-G, rA-C, rC-G, rC-T, and rG-T), and the shape of the gamma

    distribution of rate variation across sites (alpha). The comparison of these parameters from

    each of the 2 runs shows that the results of each run were similarasides from the

    autocorrelation time which increased fairly substantially. The correlation graph shows a

    random distribution, or white noiseof points.The density and relative density graphs for

    each run show similar patterns.The trace and sample trace was stochastic around the mean.

    These indicate convergence on stationarity in the Bayesian analyses and tree space by

    MCMC (see Appendix III).

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    Phylogeny assessment

    Fig. 1: 50% consensus tree from 11002 raw trees created using the MrBayes plugin in Geneious 6.0.6. (Biomatters 2012)

    showing the inferred phylogenies of 111Pristimantis species sequences and 1outgroup sequence. Bayesian posterior

    probability values are shown.

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    Altitude(metersabovesealevel)

    Altitudinal assessment

    Fig 2: Comparison of altitudinal distributions of species in the clade encompassing species fromP.orestes toP. diadematus QCAZ18015. For published data, the altitudinal range was taken from IUCN(2012) and AmphibiaWeb (2013), and for new sequence data the altitude where the individual waslocated was taken from the active specimen information sheet provided by K. Elmer.

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    Distribution assessment

    P.ockendeni: P.simonbolivari:

    P.cajamarcensis: P.orestes:

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    P.ceuthospilus: P. luteolateralis:

    P. chalceus:

    Fig 3. Distributions of 7 species ofPristimantis (P. ockendeni, P. ceuthospilus, P. simonbolivari, P.

    cajamarcensis, P. chalceus, P. luteolateralis, andP. orestes), from the clade encompassing speciesfromP. orestestoP. diadematus, with altitudinal distributions above 1500m.a.s.l. All images from

    IUCN (2012). Species with altitudinal distributions above 1500m.a.s.l were chosen as occurrences atthese altitudes are generally rarer and investigation into their distribution could possibly show multi-

    complexes of species.

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    Discussion

    Phylogenetic relationships

    74 of the 99 posterior probability values (75%) in the 50% consensus tree were over

    80%, indicating the high likelihood of relationships in the majority of the nodes.However,

    there are several incidences where the posterior probability values were less than 70%,

    including several of the basal relationships.Unfortunately, because of low support, the deep

    relationships of these species cannot be confidently confirmed with this analysis. These deep

    relationships are likely to be ancient, and confidence in these phylogenies could mean a better

    understanding of the evolutionary histories of the genus overall.

    There is one occurance of phylogenetic polytomythese occur where there is a lack

    of information, the inability to determine the branching order, or possibly speciation events

    that occured at once (Garland and Diaz-Uriarte, 1999).In this case there is phylogenetic

    polytomy ofP.nigrovittattus (QCAZ25789).I believe this was due to errors in the analysis

    rather than speciation from the rest of the species involved at the same time as the outgroup

    Phrynopys bracki.

    The new sequencePristimantis altamazonicus QCAZ25382 was grouped separately

    from the other 2 newP.altamazonicus and the 1 published sequence ofP.almatazonicus -

    instead it was grouped withP.diadematus.This may have been due to discrepancies in

    sequence analysis, but as the distributions of the species are similar it is also possible that the

    inconsistent sequence ofP. altamazonicus was simply mis-identified and should be namedP.

    diadematus. This sequence was also found at a higher altitude than the rest of the species in

    theP. diadematus cladethis could indicate that it is in fact a different species altogether,

    but further analyses would be needed to investigate this.

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    P.sp.QCAZ 25588 and P.sp.QCAZ 25582 are likely to be the same species as there

    was high support for a close relationship and they were also found in the same area.The most

    closely related species according to my analyses isPristimantis ockendeni.Heinicke,

    Duellman and Hedges (2007) analysis found that the closest relative toP.ockendeniwasP.

    unistrigatusthis species was found in the similar position in my analyses but was not more

    closely related to P.sp.QCAZ 25588 and P.sp.QCAZ 25582 compared toP.ockendeni (see

    Fig.4).With the wide distribution and the recognition thatP. ockendeniis yet to be fully

    delimited is likely thatP.sp (QCAZ25582 and QCAZ25588) are that of one of the species

    that has been or is yet to be delimited fromPristimantis ockendeni.

    Fig. 4. Simple representation of the comparison of relationships betweenPristimantisockendeni,Pristimantis unistrigatus and two unidentifiedPristimantis species in my own analysis and the

    analysis of Heinicke, Duellman and Hedges (2007).

    It is likely that the sequenceP.sp.QCAZ25392 isP.conspicillatus due to the high

    posterior probabiliy values for their relationship.The inferred relationships ofP.condor, P.

    conspicillatus (QCAZ18007, QCAZ25392) andP.croceoinguinis(QCAZ25544) are similar

    to the inferred relationships proposed by Pinto-Snchez (2012) (see Fig.5).They also find

    thatP.malkiniis the sister species toP.citrogasterwith relatively high support, but my

    Bayesian analysis showedP.malkinito be more closely related toP.lirellus andP.imitatrix,

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    with higher support.It is less similar to the relationships proposed by Heinicke, Duellman

    and Hedges (2007); they showP.croceoinguinis to be a sister species toP.citrogaster, and

    P.condor to be a derived species, whereas my analyses showP.citrogaster andP.

    croceoinguinis to be sister species (see Fig.6). With a follow-up study I would consider

    removing theP.croceoinguinissequence from the analysis in order to see if the relationships

    betweenP.condor, P.conspicillatus and P.citrogasterremained the sameif so we could

    conclude that these relationships are more likely to be correct than those proposed by

    Heinicke, Duellman and Hedges (2007).

    Fig.5.Simple representation of the comparison of relationships between 3 species of Pristimantis inmy own analysis and the analysis of Pinto- Snchez (2012)P conspicillatushere includes the

    sequencesP.sp.QCAZ18007, QCAZ25392 and the published sequence ofP.conspicillatus.

    Fig.6.Simple representation of the comparison of relationships between 4 species of Pristimantis inmy own analysis and the analysis of Heinicke, Duellman and Hedges (2007)

    With further investigation of the species listed in Heinicke, Duellman and Hedges

    (2007) asPristimantis sp.AY326002, I found that this sequence is listed as an

    Eleutherodactylus species on NCBI.However, this was defined by Darst and Canatella

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    (2004) before the analyses done by Heinicke, Duelmann and Hedges (2007), and so I

    currently accept the laters definition of the sequence.

    P.acuminatusandP.lacrimosuswere not included in the study by Heinicke,

    Duellman and Hedges (2007) nor by Pinto-Sanchez et al.,(2007)it is possible that this

    study reveals newly discovered relationships, but it would be useful for further

    investigations of the relationships between these species and those surrounding them in the

    inferred phylogenies as the posterior probability value for splitting ofP.lacrimosuswas

    extremely low (52.3) and so this relationship cannot be established with confidence.

    Fig.7.Simple representation of the comparison of relationships between 5 species of Pristimantis in

    my own analysis and the analysis of Heinicke, Duellman and Hedges (2007).

    The 32 species wide clade that was used for altitudinal analyses was chosen as it

    encompasses some of the species that have been most recently studied, namelyP.achuar, P.

    altamnis, andP.kichwarum (and the previously mentionedP.sp.)and the majority of the

    information included in this clade was from the new sequences.

    The distribution map forP.ockendenishows a vast range, but this species is

    undergoing scrutinisation. The small distributions of the recently delimitedP.kichwarum, P.

    altamnis andP.achuarby Elmer and Canatella (2008) indicate that any occurence ofP.

    ockendeniwhich has a large distribution should be studied further as the presence of cryptic

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    species, each with a smaller seperate distribution, is likely. This may also be true of other

    species with wide distributions.

    The distribution ofP. chalceus appears to be vast, but of the 25 localities in Ecuador,

    20 of them occur below 1000m.a.s.l. (AmphibiaWeb, 2013) and so those at higher altitudes

    are probably uncommon. Even so, this wide distribution could indicate that the species name

    is an umbrella termfor species that have yet to be delimited. All the sampling was

    performed in Ecuador, but for species which appear to have distributions which need to be

    further defined sampling further afield would be useful as individuals in those areas may give

    an indication of further delimited species.

    Model and analyses

    Each model available for phylogenetic analyses has its weaknesses.The GTR + I +

    model was chosen as it is more parameter rich than models such as the Jukes Cantor model

    (Hulsenbeck, Ronquist, Neilson and Bollback, 2001) and has been used in a number of

    studies involving phylogenetic relationships (Heinicke, Duellman and Hedges 2007; Santos

    et al., 2009; Pinto-Sanchez et al., 2012) and as the comparisons would involve two of these

    studies it was beneficial for the same model to be used.It has a relaxed assumption of equal

    base frequencies.The I symbol indicates that the base frequencies are stationary, and the

    symbol indicates a gamma distribution of rates for sites (Neilson, Lohman and Sullivan,

    2001).The MCMC (Markov chain Monte Carlo) algorithm is used by MrBayes to estimate

    the posterior probabilities of trees (Hulsenbeck and Ronquist, 2001) and is useful as it takes

    phylogenetic uncertainty into account.However, it has been shown that even the widely used

    Bayesian methods may not be fully accurate but may be too liberal, especially if the model

    used is not complex enough (Suzuki, Glazko and Nei, 2002).With more time, analyses such

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    as maximum likelihood and bootstrap probability would be performed to deduce any

    discrepancies that may have occurred due to the use of the model and Bayesian methods

    chosen.

    Convergence on stationarity

    The output results show convergence on stationarity when addressing the correlation,

    density and trace plots of the runs.The shape of the correlation graph showed no affinity for

    increasing or decreasing over time, with a white noise pattern of points, another indication

    of convergence. Similarly, initially the shape of the trace and sample trace graphs are

    stochastic around the mean, showing that variation of the likelihood around the mean is high,

    but then nearing the end of the analysis it varies less so indicating the approach to

    stationarity.With analyses run for a longer period of time it is likely that the variation around

    the mean would decrease further and give greater confidence in the output.

    The standard deviation of the mean was 0.915 and 1.083 for run 1 and run 2 respectivelyit

    is expected that during analysis this value should approach 0.Overall, the likelihood of

    reaching stationarity in this project was high, but with a repetition of the analysis the program

    should be run for longer in order for better confidence in this respect.

    Wider implications

    As well as the inferrred deep evolutionary history of the genus, assessing the

    distribution ofPristimantis is useful in determining which diversification hypotheses is most

    likely to be correct - for example, it has been stated that diversification was ancient and due

    to tectonic events (with the formation of the Andes) rather than climatic change (Elmer,

    Dvila and Lougheed, 2007; Heinicke, Duellman and Hedges, 2007).

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    The importance of conservation is amplified by studies similar to my own as it is

    difficult to know what real damage anthropogenic practices may have on undiscovered

    cryptic species as rapid declines continue (Stuart et al., 2004, Bickford et al., 2007). For

    example, the subdivision of wide distribution ranges into multiple smaller regions due to the

    occurrence of newly delimited species can intensify the pressure on each new species, or

    mean that different conservation practices are needed (Kohler et al., 2005)this may be true

    for the example in this study ofPristimantis ockendeni. Globally, 1933 species of amphibians

    are listed on the IUCN Red List of Threatened Species as Vulnerable, Endangered or

    Critically Endangered (IUCN, 2012) due to known practices such as habitat destruction and

    fragmentation, infectious disease, and many enigmatic declines (Stuart et al., 2004). The

    continued efforts to revise the taxonomy of thePristimantis genus will enhance the

    knowledge of species requirements and the knowledge of the genus overall.

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    Acknowledgements

    I would like to thank Dr Kathryn Elmer for her continued support throughout my time

    working on this project. Her knowledge of the subject was indeed an inspiration and gave me

    drive to learn more about the subject. I would also like to thank Roderic Page for his

    knowledge of the program Geneious and Roman Biek for the access to the licence for the

    same program, and Hans Recknagel for his insight into the program Gblocks and for his

    assistance when things were not going smoothly. I would also like to thank Isabel Coombs

    for the use of the laptop used for the majority of the preliminary analyses. Thanks also to my

    friends and family for putting up with my stress-filled messages and phone calls.

    Title page photo credit: Santiago R.Ron, Museo de Zoologa, Universidad Catlica del

    Ecuador.

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    Appendix I: Table of species names and accession numbers used (Heinicke,

    Duellman and Hedges, 2007).

    No.

    Species Origin

    Museum

    voucher

    Lab tissue

    number

    Genbank accession no.

    12S 16S

    162

    Pristimantis Heinicke,Duellman andHedges (2007) KU218116 267231 EF493518walkeri

    163

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU177807 267863 EF493517luteolateralis

    164

    Pristimantis Heinicke,Duellman andHedges (2007) KU177821 267864 EF493351parvillus

    165

    Pristimantis Heinicke,Duellman andHedges (2007) KU177638 267865 EF493675chalceus

    166

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU222023 267253 EF493519ockendeni

    167

    Pristimantis Heinicke,Duellman andHedges (2007) KU218057 267227 EF493387unistrigatus

    168

    Pristimantis Heinicke,Duellman andHedges (2007) KU217845 267211 EF493823 EF493663cajamarcensis

    169

    Pristimantis Heinicke,

    Duellman andHedges (2007) KU212216 267198 EF493520ceuthospilus

    170

    Pristimantis Heinicke,Duellman andHedges (2007) KU212226 267200 EF493521lirellus

    171

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU215476 267205 EF493824 EF493667imitatrix

    172

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU217862 267213 EF493669 EF493665croceoinguinis

    173

    PristimantisHeinicke,

    Duellman andHedges (2007) KU215460 267204 EF493670altamazonicus

    174

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU218257 267249 EF493388orestes

    175

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU218254 267248 EF493671simonbolivari

    176

    Pristimantis Heinicke,Duellman andHedges (2007) KU218035 267224 EF493348riveti

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    177

    Pristimantis Heinicke,Duellman andHedges (2007) KU218096 267228 EF493389versicolor

    178

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU218025 267222 EF493349

    phoxocephalus

    179

    Pristimantis Heinicke,Duellman andHedges (2007) KU218052 267225 EF493673spinosus

    180

    Pristimantis Heinicke,Duellman andHedges (2007) KU217863 267214 EF493672cryophilius

    181

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU219788 267250 EF493674rhodoplichus

    182

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU219796 267251 EF493377 EF493668wiensi

    183

    Pristimantis Heinicke,Duellman andHedges (2007) KU212293 267202 EF493825 EF493367petrobardus

    184

    Pristimantis Heinicke,Duellman andHedges (2007)

    MHNSMWED56846 267438 EF493826 E F493664melanogaster

    185

    Pristimantis Heinicke,Duellman and

    Hedges (2007) n/a n/a AM039709 AM039641simonsii

    186

    Pristimantis Heinicke,

    Duellman andHedges (2007) KU177637 267866 EF493524appendiculatus

    187

    Pristimantis Heinicke,Duellman andHedges (2007) KU218028 267223 EF493680pycnodermis

    188

    Pristimantis Heinicke,Duellman andHedges (2007) KU179090 267867 EF493522dissimulatus

    189

    Pristimantis Heinicke,Duellman andHedges (2007) KU177658 267868 EF493523calcarulatus

    190

    Pristimantis Heinicke,

    Duellman andHedges (2007) KU218021 267221 EF493679orcesi

    191

    Pristimantis Heinicke,Duellman andHedges (2007) KU218002 267217 EF493676glandulosus

    192

    Pristimantis Heinicke,Duellman andHedges (2007) KU218015 267218 EF493677inusitatus

    193

    Pristimantis Heinicke,Duellman andHedges (2007) KU217786 267207 EF493678acerus

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    194

    Pristimantis Heinicke,Duellman andHedges (2007) KU212220 267199 EF493681schultei

    195

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU291702 171051 EF493351

    bromeliaceus

    196

    Pristimantis Heinicke,Duellman andHedges (2007) KU218147 267246 EF493525subsigillatus

    197

    Pristimantis Heinicke,Duellman andHedges (2007) KU177812 267869 EF493526nyctophylax

    198

    Pristimantis Heinicke,Duellman andHedges (2007) No voucher 266036 EF493692shrevei

    199

    Pristimantis Heinicke,Duellman and

    Hedges (2007) BWMC6918 266624 EF493527euphronides

    200

    Pristimantis Heinicke,Duellman andHedges (2007) No voucher 102308 EF493691rozei

    201

    Pristimantis Heinicke,Duellman andHedges (2007) KU218109 267230 EF493511gentryi

    202

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU218013 267229 EF493512truebae

    203

    Pristimantis Heinicke,

    Duellman andHedges (2007) KU217871 267215 EF493513curtipes

    204

    Pristimantis Heinicke,Duellman andHedges (2007) KU177972 267870 EF493689vertebralis

    205

    Pristimantis Heinicke,Duellman andHedges (2007) KU217836 267210 EF493350buckleyi

    206

    Pristimantis Heinicke,Duellman andHedges (2007) KU217991 267216 EF493688devillei

    207

    Pristimantis Heinicke,

    Duellman andHedges (2007) KU177847 267871 EF493687surdus

    208

    Pristimantis Heinicke,Duellman andHedges (2007) KU179374 267872 EF493690quinquagesimus

    209

    Pristimantis Heinicke,Duellman andHedges (2007)

    n/aKU217998

    n/aKU21799

    8 AY326003duellmani

    210

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU177861 267873 EF493514thymalopsoides

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    211

    Pristimantis Heinicke,Duellman andHedges (2007) KU208508 267439 EF493682ocreatus

    212

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU218030 267441 EF493683

    pyrrhomerus

    213

    Pristimantis Heinicke,Duellman andHedges (2007) KU218234 267247 EF493515festae

    214

    Pristimantis Heinicke,Duellman andHedges (2007) KU218227 267437 EF493684leoni

    215

    Pristimantis Heinicke,Duellman and

    Hedges (2007) QCAZ12410 267646 EF493686verecundus

    216

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU177684 267874 EF493685celator

    217

    Pristimantis Heinicke,Duellman andHedges (2007) n/a n/a AY326007chloronotus

    218

    Pristimantis Heinicke,Duellman andHedges (2007) QCAZ16428 267644 EF493516thymelensis

    219

    Pristimantis Heinicke,Duellman andHedges (2007) n/a n/a AY326005supernatis

    220

    Pristimantis Heinicke,

    Duellman andHedges (2007) n/a n/a AY326002sp.

    221

    Pristimantis Heinicke,Duellman andHedges (2007) USNM33609 101646 EF493699urichi

    222

    Pristimantis Heinicke,Duellman andHedges (2007) KU218016 267219 EF493698latidiscus

    223

    Pristimantis Heinicke,Duellman andHedges (2007) QCAZ17101 267635 EF493354colomai

    224

    Pristimantis Heinicke,

    Duellman andHedges (2007)

    AMNHA12444 267876 EF493697cruentus

    225

    Pristimantis Heinicke,Duellman andHedges (2007)

    AMNHA124551 267877 EF493355ridens

    226

    Pristimantis Heinicke,Duellman andHedges (2007) KU177252 267878 EF493528cremnobates

    227

    Pristimantis Heinicke,Duellman andHedges (2007) n/a n/a AY326004w-nigrum

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    228

    Pristimantis Heinicke,Duellman andHedges (2007) KU217830 267209 EF493696actites

    229

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU222001 267252 EF493695

    lanthanites

    230

    Pristimantis Heinicke,Duellman andHedges (2007) KU177730 267879 EF493693 EF493666crenunguis

    231

    Pristimantis Heinicke,Duellman andHedges (2007) QCAZ19771 267640 EF493694labiosus

    232

    Pristimantis Heinicke,Duellman and

    Hedges (2007)

    MHNSMLR

    4341 266049 EF493356sp.

    233

    Pristimantis Heinicke,Duellman and

    Hedges (2007) QCAZ28448 267636 EF493529conspicillatus

    234

    Pristimantis Heinicke,Duellman andHedges (2007) KU217857 267212 EF493701condor

    235

    Pristimantis Heinicke,Duellman andHedges (2007) KU212278 267201 EF493700citriogaster

    236

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU217809 267208 EF493827 EF493660achatinus

    237

    Pristimantis Heinicke,

    Duellman andHedges (2007) KU218019 267220 EF493392lymani

    238

    Pristimantis Heinicke,Duellman andHedges (2007)

    MHNSM9298 266046 EF493703fenestratus

    239

    Pristimantis Heinicke,Duellman andHedges (2007) KU291638 171021 EF493702bipunctatus

    240

    Pristimantis Heinicke,Duellman and

    Hedges (2007)

    MHNSM100

    71 266052 EF493393skydmainos

    241

    Pristimantis Heinicke,

    Duellman andHedges (2007) KU215493 267206 EF493353toftae

    242

    Pristimantis Heinicke,Duellman andHedges (2007) KU173492 267875 EF493706rhabdolaemus

    243

    Pristimantis Heinicke,Duellman andHedges (2007) n/a n/a AY843586pluvicanorus

    244

    Pristimantis Heinicke,Duellman andHedges (2007) KU291635 171098 EF493705sagittulus

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    245

    Pristimantis Heinicke,Duellman andHedges (2007) KU291659 171080 EF493704stictogaster

    246

    Pristimantis Heinicke,Duellman and

    Hedges (2007) KU291627 171070 EF493390

    aniptopalmatus

    247

    Pristimantis Heinicke,Duellman andHedges (2007)

    MHNSM9267 266050 EF493707peruvianus

    248

    Pristimantis Heinicke,Duellman andHedges (2007) KU177680 267880 EF493391caprifer

    .....

    260

    Phrynopus Heinicke,Duellman andHedges (2007)

    USNM286919 171045 EF493709bracki

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    Appendix II: New sequence information provided by Dr Kathryn Elmer

    Species nameQCAZnumber

    Locality Latitude LongitudeElevation(m.a.s.l)

    Pristimantisachuar

    25457 Kapawi lodge S 0232'32" W 7651'50" 239

    Pristimantis

    achuarholotype25463 Kapawi lodge S 0232'32" W 7651'50" 239

    Pristimantis

    acuminatus16748 EC Yasuni S 040' 36'' W 7623'43'' 230

    Pristimantis

    acuminatus19664 EC Yasuni S 040' 36'' W 7623'43'' 230

    Pristimantis

    altamazonicus25382 FMT S 0121'26" W 7751'73" 973

    Pristimantis

    altamazonicus 25407 La Selva S 0029'89" W 7622'43" 245

    Pristimantisaltamazonicus

    25535 Kapawi lodge S 0232'32" W 7551'50" 239

    Pristimantis

    altamnis25808

    Comunidad

    AsociacinChonta Yacu

    N 0006.69 W 7722.46 610

    Pristimantis

    conspicillatus18007

    Estacion

    BiologicaJatun Sacha,Napo

    S 0104'840" W 7736502 419

    Pristimantiscroceoinguinis

    18231

    Shaime,

    Zamora-

    ChinchipeS 0418'92" W 7839'84" 907

    Pristimantis

    croceoinguinis25544 Kapawi lodge S 0232'32" W 7551'50" 239

    Pristimantis

    diadematus18014

    EstacionBiologica

    Jatun Sacha,Napo

    S 0104'840" W 7736502 419

    Pristimantis

    diadematus18015

    EstacionBiologica

    Jatun Sacha,Napo

    S 0104'841" W 7736503 420

    Pristimantis

    diadematus18017

    EstacionBiologica

    Jatun Sacha,Napo

    S 0104'842" W 7736504 421

    Pristimantis

    kichwarum25579

    Estacion

    BiologicaJatun Sacha,Napo

    S 0103.740 W 7736879 390

    Pristimantis

    lacrimosus15982 Azuela S 010'00" W 7739'00" unknown

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    Pristimantis

    lanthanites25389 La Selva S 0029'89" W 7622'43" 245

    Pristimantis

    librarius25589 Auca 14 Rd S 0041'85" W 7643'79" 255

    Pristimantismalkini

    25444

    Estacion

    BiologicaJatun Sacha,Napo

    S 0104'840" W 7736'502" 419

    Pristimantis

    martiae25403 La Selva S 0029'89" W 7622'43" 245

    Pristimantis

    nigrovitattus25789 Lumbaqui N 0006'69" W 7722'46" 610

    Pristimantis

    ockendeni25576 Cuyabeno S 0000'8" W 7610'4" 230

    Pristimantis

    ockendeni25768

    EstacionBiologica

    Jatun Sacha,Napo

    S 0104'840" W 7736'502" 419

    Pristimantis sp. 18233Shaime,

    Zamora-Chinchipe

    S 0418'92" W 7839'84" 907

    Pristimantis sp. 18235Shaime,

    Zamora-Chinchipe

    S 0418'93" W 7839'85" 908

    Pristimantis sp. 18236Shaime,Zamora-Chinchipe

    S 0418'94" W 7839'86" 909

    Pristimantis sp. 25392 La Selva S 0029'89" W 7622'43" 245

    Pristimantis sp. 25582 Auca 14 Rd S 0041'85" W 7643'79" 255

    Pristimantis sp. 25588 Auca 14 Rd S 0041'86" W 7643'80" 256

    Pristimantis

    variabilis28430 Cuyabeno S 0000'8" W 7610'4" 230

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    Appendix III: Output tables and graphs from MrBayes (Hulsenbeck and

    Ronquist, 2001)

    Table 1.Summary statistics produced from the MrBayes analysis.

    Summary statistic LnL_run1 LnL_run2

    Mean -17914.636 -17911.164

    Standard deviation of mean 0.915 1.083

    Median -17914.23 -17911.767

    95% HPD lower -17938.889 -17938.827

    95% HPD upper -17892.597 -17882.131

    Auto-correlation time (ACT) 5380.765 5153.555

    Effective sample size (ESS) 173.804 181.467

    Fig.S1.Correlation of LnL_run1 and LnL_run2.

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    Fig. S2.Comparison of density between LnL_run1 and LnL_run2.

    Fig. S3. Comparison of relative density between LnL_run1 and LnL_run2.

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    Fig. S4. Trace plot

    Fig. S5. Trace plot (sample only)