Estimation of phylogenetic divergence times in Panagrolaimidae and other nematodes using relaxed molecular clocks calibrated with insect and crustacean fossils
This study presents the use of relaxed molecular clock methods to infer the dates of divergence between Panagrolaimus species. Autocorrelated relaxed tree methods, combined with well characterised fossil calibration dates, yield estimates of nematode divergence dates in accordance with the palaeonto...
Published in: | Nematology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Brill
2017
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1163/15685411-00003096 https://brill.com/view/journals/nemy/19/8/article-p899_4.xml https://data.brill.com/files/journals/15685411_019_08_s004_text.pdf |
id |
crbrillap:10.1163/15685411-00003096 |
---|---|
record_format |
openpolar |
spelling |
crbrillap:10.1163/15685411-00003096 2024-03-03T08:37:17+00:00 Estimation of phylogenetic divergence times in Panagrolaimidae and other nematodes using relaxed molecular clocks calibrated with insect and crustacean fossils McGill, Lorraine M. Fitzpatrick, David A. Pisani, Davide Burnell, Ann M. 2017 http://dx.doi.org/10.1163/15685411-00003096 https://brill.com/view/journals/nemy/19/8/article-p899_4.xml https://data.brill.com/files/journals/15685411_019_08_s004_text.pdf unknown Brill Nematology volume 19, issue 8, page 899-913 ISSN 1388-5545 1568-5411 Agronomy and Crop Science Ecology, Evolution, Behavior and Systematics journal-article 2017 crbrillap https://doi.org/10.1163/15685411-00003096 2024-02-07T10:52:41Z This study presents the use of relaxed molecular clock methods to infer the dates of divergence between Panagrolaimus species. Autocorrelated relaxed tree methods, combined with well characterised fossil calibration dates, yield estimates of nematode divergence dates in accordance with the palaeontological age of fossil ascarid eggs and with the previously estimated date of 18 Ma (range 11.6 to 29.9 Ma) for the divergence of the Caenorhabditis lineage. Our data indicate that Panagrolaimus davidi from Antarctica separated ca 21.98 Ma from its currently known, most closely related strain. Thus, P. davidi may have existed in Antarctica prior to the Last Glacial Maximum, although this seems unlikely as it shares physiological and life history traits with closely related nematodes from temperate climates. These traits may have facilitated colonisation of Antarctica by P. davidi after the quaternary glaciation, analogous to the colonisation of Surtsey Island, Iceland, by P. superbus after its volcanic formation. This study demonstrates that autocorrelated relaxed tree methods combined with well characterised fossil calibration dates may be used as a method to estimate the divergence dates within nematodes in order to gain insight into their evolutionary history. Article in Journal/Newspaper Antarc* Antarctica Iceland Surtsey Brill Surtsey ENVELOPE(-20.608,-20.608,63.301,63.301) Nematology 19 8 899 913 |
institution |
Open Polar |
collection |
Brill |
op_collection_id |
crbrillap |
language |
unknown |
topic |
Agronomy and Crop Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Agronomy and Crop Science Ecology, Evolution, Behavior and Systematics McGill, Lorraine M. Fitzpatrick, David A. Pisani, Davide Burnell, Ann M. Estimation of phylogenetic divergence times in Panagrolaimidae and other nematodes using relaxed molecular clocks calibrated with insect and crustacean fossils |
topic_facet |
Agronomy and Crop Science Ecology, Evolution, Behavior and Systematics |
description |
This study presents the use of relaxed molecular clock methods to infer the dates of divergence between Panagrolaimus species. Autocorrelated relaxed tree methods, combined with well characterised fossil calibration dates, yield estimates of nematode divergence dates in accordance with the palaeontological age of fossil ascarid eggs and with the previously estimated date of 18 Ma (range 11.6 to 29.9 Ma) for the divergence of the Caenorhabditis lineage. Our data indicate that Panagrolaimus davidi from Antarctica separated ca 21.98 Ma from its currently known, most closely related strain. Thus, P. davidi may have existed in Antarctica prior to the Last Glacial Maximum, although this seems unlikely as it shares physiological and life history traits with closely related nematodes from temperate climates. These traits may have facilitated colonisation of Antarctica by P. davidi after the quaternary glaciation, analogous to the colonisation of Surtsey Island, Iceland, by P. superbus after its volcanic formation. This study demonstrates that autocorrelated relaxed tree methods combined with well characterised fossil calibration dates may be used as a method to estimate the divergence dates within nematodes in order to gain insight into their evolutionary history. |
format |
Article in Journal/Newspaper |
author |
McGill, Lorraine M. Fitzpatrick, David A. Pisani, Davide Burnell, Ann M. |
author_facet |
McGill, Lorraine M. Fitzpatrick, David A. Pisani, Davide Burnell, Ann M. |
author_sort |
McGill, Lorraine M. |
title |
Estimation of phylogenetic divergence times in Panagrolaimidae and other nematodes using relaxed molecular clocks calibrated with insect and crustacean fossils |
title_short |
Estimation of phylogenetic divergence times in Panagrolaimidae and other nematodes using relaxed molecular clocks calibrated with insect and crustacean fossils |
title_full |
Estimation of phylogenetic divergence times in Panagrolaimidae and other nematodes using relaxed molecular clocks calibrated with insect and crustacean fossils |
title_fullStr |
Estimation of phylogenetic divergence times in Panagrolaimidae and other nematodes using relaxed molecular clocks calibrated with insect and crustacean fossils |
title_full_unstemmed |
Estimation of phylogenetic divergence times in Panagrolaimidae and other nematodes using relaxed molecular clocks calibrated with insect and crustacean fossils |
title_sort |
estimation of phylogenetic divergence times in panagrolaimidae and other nematodes using relaxed molecular clocks calibrated with insect and crustacean fossils |
publisher |
Brill |
publishDate |
2017 |
url |
http://dx.doi.org/10.1163/15685411-00003096 https://brill.com/view/journals/nemy/19/8/article-p899_4.xml https://data.brill.com/files/journals/15685411_019_08_s004_text.pdf |
long_lat |
ENVELOPE(-20.608,-20.608,63.301,63.301) |
geographic |
Surtsey |
geographic_facet |
Surtsey |
genre |
Antarc* Antarctica Iceland Surtsey |
genre_facet |
Antarc* Antarctica Iceland Surtsey |
op_source |
Nematology volume 19, issue 8, page 899-913 ISSN 1388-5545 1568-5411 |
op_doi |
https://doi.org/10.1163/15685411-00003096 |
container_title |
Nematology |
container_volume |
19 |
container_issue |
8 |
container_start_page |
899 |
op_container_end_page |
913 |
_version_ |
1792497988153638912 |