The Life Cycle of the Antarctic Nematode Plectus murrayi Under Laboratory Conditions
We study and describe the life cycle of Plectus murrayi, a free-living, bacterivorous soil nematode endemic to terrestrial Antarctica. The study was performed at 15°C, a temperature identified as optimal for growth rate studies in the laboratory. Under these conditions, we observed that the first mo...
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ftpubmed:oai:pubmedcentral.nih.gov:3625130 2023-05-15T13:36:05+02:00 The Life Cycle of the Antarctic Nematode Plectus murrayi Under Laboratory Conditions de Tomasel, Cecilia Milano Adams, Byron J. Tomasel, Fernando G. Wall, Diana H. 2013-03 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3625130 http://www.ncbi.nlm.nih.gov/pubmed/23589658 en eng The Society of Nematologists http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3625130 http://www.ncbi.nlm.nih.gov/pubmed/23589658 © The Society of Nematologists 2013 Contributed Paper Text 2013 ftpubmed 2013-09-04T22:24:49Z We study and describe the life cycle of Plectus murrayi, a free-living, bacterivorous soil nematode endemic to terrestrial Antarctica. The study was performed at 15°C, a temperature identified as optimal for growth rate studies in the laboratory. Under these conditions, we observed that the first molt occurs in the egg, and second-stage juveniles hatch 12 to 14 d after egg laying. Individuals undergo three subsequent molts to become adults 23 to 26 d after hatching with a final average length of 950 μm. Egg-laying begins 41 to 43 d after hatching, resulting in an egg-to-egg life cycle ranging from 53 to 57 d under our experimental conditions. Considering that the average soil temperature during austral summers in the McMurdo Dry Valleys is only a few degrees above freezing, it is highly likely that many, if not most of these animals, require more than 1 yr to complete their entire life cycle. Our study supports other research that establishes P. murrayi as an important model organism for studying adaptation to extreme environmental stress. Text Antarc* Antarctic Antarctica McMurdo Dry Valleys PubMed Central (PMC) Antarctic Austral McMurdo Dry Valleys The Antarctic |
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Contributed Paper de Tomasel, Cecilia Milano Adams, Byron J. Tomasel, Fernando G. Wall, Diana H. The Life Cycle of the Antarctic Nematode Plectus murrayi Under Laboratory Conditions |
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Contributed Paper |
description |
We study and describe the life cycle of Plectus murrayi, a free-living, bacterivorous soil nematode endemic to terrestrial Antarctica. The study was performed at 15°C, a temperature identified as optimal for growth rate studies in the laboratory. Under these conditions, we observed that the first molt occurs in the egg, and second-stage juveniles hatch 12 to 14 d after egg laying. Individuals undergo three subsequent molts to become adults 23 to 26 d after hatching with a final average length of 950 μm. Egg-laying begins 41 to 43 d after hatching, resulting in an egg-to-egg life cycle ranging from 53 to 57 d under our experimental conditions. Considering that the average soil temperature during austral summers in the McMurdo Dry Valleys is only a few degrees above freezing, it is highly likely that many, if not most of these animals, require more than 1 yr to complete their entire life cycle. Our study supports other research that establishes P. murrayi as an important model organism for studying adaptation to extreme environmental stress. |
format |
Text |
author |
de Tomasel, Cecilia Milano Adams, Byron J. Tomasel, Fernando G. Wall, Diana H. |
author_facet |
de Tomasel, Cecilia Milano Adams, Byron J. Tomasel, Fernando G. Wall, Diana H. |
author_sort |
de Tomasel, Cecilia Milano |
title |
The Life Cycle of the Antarctic Nematode Plectus murrayi Under Laboratory Conditions |
title_short |
The Life Cycle of the Antarctic Nematode Plectus murrayi Under Laboratory Conditions |
title_full |
The Life Cycle of the Antarctic Nematode Plectus murrayi Under Laboratory Conditions |
title_fullStr |
The Life Cycle of the Antarctic Nematode Plectus murrayi Under Laboratory Conditions |
title_full_unstemmed |
The Life Cycle of the Antarctic Nematode Plectus murrayi Under Laboratory Conditions |
title_sort |
life cycle of the antarctic nematode plectus murrayi under laboratory conditions |
publisher |
The Society of Nematologists |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3625130 http://www.ncbi.nlm.nih.gov/pubmed/23589658 |
geographic |
Antarctic Austral McMurdo Dry Valleys The Antarctic |
geographic_facet |
Antarctic Austral McMurdo Dry Valleys The Antarctic |
genre |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3625130 http://www.ncbi.nlm.nih.gov/pubmed/23589658 |
op_rights |
© The Society of Nematologists 2013 |
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1766074140390850560 |