Support for vicariant origins of the New Zealand Onychophora

Julia Allwood, Dianne Gleeson, Georg Mayer, Savel Daniels, Jacqueline Beggs, Thomas Buckley

    Research output: Contribution to journalArticle

    61 Citations (Scopus)

    Abstract

    Aim The distribution of Onychophora across the southern continents has long been considered the result of vicariance events. However, it has recently been hypothesized that New Zealand was completely inundated during the late Oligocene (25–22 Ma) and therefore that the entire biota is the result of longdistance dispersal. We tested this assumption using phylogenetic and molecular dating of DNA sequence data from Onychophora. Location New Zealand, Australia, South Africa, Chile (South America). Methods We obtained DNA sequence data from the nuclear genes 28S and 18S rRNA to reconstruct relationships among species of Peripatopsidae (Onychophora). We performed molecular dating under a Bayesian relaxed clock model with a range of prior distributions using the rifting of South America and South Africa as a calibration. Results Our phylogenetic trees revealed that the New Zealand genera Ooperipatellus and Peripatoides, together with selected Australian genera (Euperipatoides, Phallocephale and an undescribed genus from Tasmania), form a monophyletic group that is the sister group to genera from Chile (Metaperipatus) and South Africa (Peripatopsis and Opisthopatus). The relaxed clock dating analyses yielded mean divergence times from 71.3 to 78.9 Ma for the split of the New Zealand Peripatoides from their Australian sister taxa. The 0.95 Bayesian posterior intervals were very broad and ranged from 24.5 to 137.6 Ma depending on the prior assumptions. The mean divergence of the New Zealand species of Ooperipatellus from the Australian species Ooperipatellus insignis was estimated at between 39.9 and 46.2 Ma, with posterior intervals ranging from 9.5 to 91.6 Ma. Main conclusions The age of Peripatoides is consistent with long-term survival in New Zealand and implies that New Zealand was not completely submerged during the Oligocene. Ooperipatellus is less informative on the question of continuous land in the New Zealand region because we cannot exclude a post-Oligocene divergence. The great age of Peripatoides is consistent with a vicariant origin of this genus resulting from the rifting of New Zealand from the eastern margin of Gondwana and supports the assumptions of previous authors who considered the Onychophora to be a relict component of the New Zealand biota.
    Original languageEnglish
    Pages (from-to)669-681
    Number of pages13
    JournalJournal of Biogeography
    Volume37
    DOIs
    Publication statusPublished - 2010

    Fingerprint

    Onychophora
    Oligocene
    divergence
    rifting
    South Africa
    biota
    Euperipatoides
    phylogenetics
    Chile
    DNA
    Peripatopsidae
    vicariance
    nucleotide sequences
    Gondwana
    new genus
    phylogeny
    organisms
    Tasmania
    new species
    calibration

    Cite this

    Allwood, Julia ; Gleeson, Dianne ; Mayer, Georg ; Daniels, Savel ; Beggs, Jacqueline ; Buckley, Thomas. / Support for vicariant origins of the New Zealand Onychophora. In: Journal of Biogeography. 2010 ; Vol. 37. pp. 669-681.
    @article{2ec7b7aae3a04703bcd1b1b7e16a1c60,
    title = "Support for vicariant origins of the New Zealand Onychophora",
    abstract = "Aim The distribution of Onychophora across the southern continents has long been considered the result of vicariance events. However, it has recently been hypothesized that New Zealand was completely inundated during the late Oligocene (25–22 Ma) and therefore that the entire biota is the result of longdistance dispersal. We tested this assumption using phylogenetic and molecular dating of DNA sequence data from Onychophora. Location New Zealand, Australia, South Africa, Chile (South America). Methods We obtained DNA sequence data from the nuclear genes 28S and 18S rRNA to reconstruct relationships among species of Peripatopsidae (Onychophora). We performed molecular dating under a Bayesian relaxed clock model with a range of prior distributions using the rifting of South America and South Africa as a calibration. Results Our phylogenetic trees revealed that the New Zealand genera Ooperipatellus and Peripatoides, together with selected Australian genera (Euperipatoides, Phallocephale and an undescribed genus from Tasmania), form a monophyletic group that is the sister group to genera from Chile (Metaperipatus) and South Africa (Peripatopsis and Opisthopatus). The relaxed clock dating analyses yielded mean divergence times from 71.3 to 78.9 Ma for the split of the New Zealand Peripatoides from their Australian sister taxa. The 0.95 Bayesian posterior intervals were very broad and ranged from 24.5 to 137.6 Ma depending on the prior assumptions. The mean divergence of the New Zealand species of Ooperipatellus from the Australian species Ooperipatellus insignis was estimated at between 39.9 and 46.2 Ma, with posterior intervals ranging from 9.5 to 91.6 Ma. Main conclusions The age of Peripatoides is consistent with long-term survival in New Zealand and implies that New Zealand was not completely submerged during the Oligocene. Ooperipatellus is less informative on the question of continuous land in the New Zealand region because we cannot exclude a post-Oligocene divergence. The great age of Peripatoides is consistent with a vicariant origin of this genus resulting from the rifting of New Zealand from the eastern margin of Gondwana and supports the assumptions of previous authors who considered the Onychophora to be a relict component of the New Zealand biota.",
    keywords = "Biogeography, dispersal, Gondwana, molecular clock, Oligocene Drowning, Peripatopsidae, peripatus, velvet worms, vicariance.",
    author = "Julia Allwood and Dianne Gleeson and Georg Mayer and Savel Daniels and Jacqueline Beggs and Thomas Buckley",
    year = "2010",
    doi = "10.1111/j.1365-2699.2009.02233.x",
    language = "English",
    volume = "37",
    pages = "669--681",
    journal = "Journal of Biogeography",
    issn = "0305-0270",
    publisher = "Wiley-Blackwell",

    }

    Support for vicariant origins of the New Zealand Onychophora. / Allwood, Julia; Gleeson, Dianne; Mayer, Georg; Daniels, Savel; Beggs, Jacqueline; Buckley, Thomas.

    In: Journal of Biogeography, Vol. 37, 2010, p. 669-681.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Support for vicariant origins of the New Zealand Onychophora

    AU - Allwood, Julia

    AU - Gleeson, Dianne

    AU - Mayer, Georg

    AU - Daniels, Savel

    AU - Beggs, Jacqueline

    AU - Buckley, Thomas

    PY - 2010

    Y1 - 2010

    N2 - Aim The distribution of Onychophora across the southern continents has long been considered the result of vicariance events. However, it has recently been hypothesized that New Zealand was completely inundated during the late Oligocene (25–22 Ma) and therefore that the entire biota is the result of longdistance dispersal. We tested this assumption using phylogenetic and molecular dating of DNA sequence data from Onychophora. Location New Zealand, Australia, South Africa, Chile (South America). Methods We obtained DNA sequence data from the nuclear genes 28S and 18S rRNA to reconstruct relationships among species of Peripatopsidae (Onychophora). We performed molecular dating under a Bayesian relaxed clock model with a range of prior distributions using the rifting of South America and South Africa as a calibration. Results Our phylogenetic trees revealed that the New Zealand genera Ooperipatellus and Peripatoides, together with selected Australian genera (Euperipatoides, Phallocephale and an undescribed genus from Tasmania), form a monophyletic group that is the sister group to genera from Chile (Metaperipatus) and South Africa (Peripatopsis and Opisthopatus). The relaxed clock dating analyses yielded mean divergence times from 71.3 to 78.9 Ma for the split of the New Zealand Peripatoides from their Australian sister taxa. The 0.95 Bayesian posterior intervals were very broad and ranged from 24.5 to 137.6 Ma depending on the prior assumptions. The mean divergence of the New Zealand species of Ooperipatellus from the Australian species Ooperipatellus insignis was estimated at between 39.9 and 46.2 Ma, with posterior intervals ranging from 9.5 to 91.6 Ma. Main conclusions The age of Peripatoides is consistent with long-term survival in New Zealand and implies that New Zealand was not completely submerged during the Oligocene. Ooperipatellus is less informative on the question of continuous land in the New Zealand region because we cannot exclude a post-Oligocene divergence. The great age of Peripatoides is consistent with a vicariant origin of this genus resulting from the rifting of New Zealand from the eastern margin of Gondwana and supports the assumptions of previous authors who considered the Onychophora to be a relict component of the New Zealand biota.

    AB - Aim The distribution of Onychophora across the southern continents has long been considered the result of vicariance events. However, it has recently been hypothesized that New Zealand was completely inundated during the late Oligocene (25–22 Ma) and therefore that the entire biota is the result of longdistance dispersal. We tested this assumption using phylogenetic and molecular dating of DNA sequence data from Onychophora. Location New Zealand, Australia, South Africa, Chile (South America). Methods We obtained DNA sequence data from the nuclear genes 28S and 18S rRNA to reconstruct relationships among species of Peripatopsidae (Onychophora). We performed molecular dating under a Bayesian relaxed clock model with a range of prior distributions using the rifting of South America and South Africa as a calibration. Results Our phylogenetic trees revealed that the New Zealand genera Ooperipatellus and Peripatoides, together with selected Australian genera (Euperipatoides, Phallocephale and an undescribed genus from Tasmania), form a monophyletic group that is the sister group to genera from Chile (Metaperipatus) and South Africa (Peripatopsis and Opisthopatus). The relaxed clock dating analyses yielded mean divergence times from 71.3 to 78.9 Ma for the split of the New Zealand Peripatoides from their Australian sister taxa. The 0.95 Bayesian posterior intervals were very broad and ranged from 24.5 to 137.6 Ma depending on the prior assumptions. The mean divergence of the New Zealand species of Ooperipatellus from the Australian species Ooperipatellus insignis was estimated at between 39.9 and 46.2 Ma, with posterior intervals ranging from 9.5 to 91.6 Ma. Main conclusions The age of Peripatoides is consistent with long-term survival in New Zealand and implies that New Zealand was not completely submerged during the Oligocene. Ooperipatellus is less informative on the question of continuous land in the New Zealand region because we cannot exclude a post-Oligocene divergence. The great age of Peripatoides is consistent with a vicariant origin of this genus resulting from the rifting of New Zealand from the eastern margin of Gondwana and supports the assumptions of previous authors who considered the Onychophora to be a relict component of the New Zealand biota.

    KW - Biogeography

    KW - dispersal

    KW - Gondwana

    KW - molecular clock

    KW - Oligocene Drowning

    KW - Peripatopsidae

    KW - peripatus

    KW - velvet worms

    KW - vicariance.

    U2 - 10.1111/j.1365-2699.2009.02233.x

    DO - 10.1111/j.1365-2699.2009.02233.x

    M3 - Article

    VL - 37

    SP - 669

    EP - 681

    JO - Journal of Biogeography

    JF - Journal of Biogeography

    SN - 0305-0270

    ER -