New and known free-living nematode species (Nematoda: Chromadorea) from offshore tsunami monitoring buoys in the Southwest Pacific Ocean

Deep-ocean Assessment and Reporting of Tsunami (DART) buoys are deployed across the Southwest Pacific and provide substrates for biofouling communities. Two new free-living nematode species, Atrochromadora tereroa sp. nov. and Euchromadora rebeccae sp. nov. (family Chromadoridae), and one known spec...

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Main Author: Daniel Leduc
Format: Article
Language:English
Published: PeerJ Inc. 2025-07-01
Series:PeerJ
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Online Access:https://peerj.com/articles/19789.pdf
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author Daniel Leduc
author_facet Daniel Leduc
author_sort Daniel Leduc
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description Deep-ocean Assessment and Reporting of Tsunami (DART) buoys are deployed across the Southwest Pacific and provide substrates for biofouling communities. Two new free-living nematode species, Atrochromadora tereroa sp. nov. and Euchromadora rebeccae sp. nov. (family Chromadoridae), and one known species, Halomonhystera refringens (Bresslau & Schuurmans Stekhoven, 1933) comb. nov. (family Monhysteridae), are described from buoys deployed off Raoul Island in the Kermadec/Rangitāhua region and off New Zealand’s East Cape. Thalassomonhystera refringens (Bresslau & Schuurmans Stekhoven, 1933) Jacobs, 1987 and T. anoxybiotica (Jensen, 1986) Jacobs, 1987 are transferred to Halomonhystera based on the presence of precloacal and caudal papillae in males. In addition, Halomohystera zhangi Li, Huang & Huang, 2024 is synonymised with Halomonhystera refringens. Updated keys to Atrochromadora, Euchromadora and Halomonhystera species are provided. The presence of nematodes on buoys located more than 100 km from the nearest landmass and in deep waters (>3,500 m water depth) shows that some nematode species are capable long-distance dispersal to colonise new substrates. Such dispersal by Atrochromadora, Euchromadora and Halomonhystera species likely occurs via drifting macroalgal fragments.
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spelling doaj-art-35099d2a54544feabcd0a0e8a03296c22025-08-20T03:58:14ZengPeerJ Inc.PeerJ2167-83592025-07-0113e1978910.7717/peerj.19789New and known free-living nematode species (Nematoda: Chromadorea) from offshore tsunami monitoring buoys in the Southwest Pacific OceanDaniel Leduc0Oceans Centre, NIWA, Wellington, WGN, New ZealandDeep-ocean Assessment and Reporting of Tsunami (DART) buoys are deployed across the Southwest Pacific and provide substrates for biofouling communities. Two new free-living nematode species, Atrochromadora tereroa sp. nov. and Euchromadora rebeccae sp. nov. (family Chromadoridae), and one known species, Halomonhystera refringens (Bresslau & Schuurmans Stekhoven, 1933) comb. nov. (family Monhysteridae), are described from buoys deployed off Raoul Island in the Kermadec/Rangitāhua region and off New Zealand’s East Cape. Thalassomonhystera refringens (Bresslau & Schuurmans Stekhoven, 1933) Jacobs, 1987 and T. anoxybiotica (Jensen, 1986) Jacobs, 1987 are transferred to Halomonhystera based on the presence of precloacal and caudal papillae in males. In addition, Halomohystera zhangi Li, Huang & Huang, 2024 is synonymised with Halomonhystera refringens. Updated keys to Atrochromadora, Euchromadora and Halomonhystera species are provided. The presence of nematodes on buoys located more than 100 km from the nearest landmass and in deep waters (>3,500 m water depth) shows that some nematode species are capable long-distance dispersal to colonise new substrates. Such dispersal by Atrochromadora, Euchromadora and Halomonhystera species likely occurs via drifting macroalgal fragments.https://peerj.com/articles/19789.pdfNematodaMonhysteridaChromadoridaEpiphyticNew species
spellingShingle Daniel Leduc
New and known free-living nematode species (Nematoda: Chromadorea) from offshore tsunami monitoring buoys in the Southwest Pacific Ocean
PeerJ
Nematoda
Monhysterida
Chromadorida
Epiphytic
New species
title New and known free-living nematode species (Nematoda: Chromadorea) from offshore tsunami monitoring buoys in the Southwest Pacific Ocean
title_full New and known free-living nematode species (Nematoda: Chromadorea) from offshore tsunami monitoring buoys in the Southwest Pacific Ocean
title_fullStr New and known free-living nematode species (Nematoda: Chromadorea) from offshore tsunami monitoring buoys in the Southwest Pacific Ocean
title_full_unstemmed New and known free-living nematode species (Nematoda: Chromadorea) from offshore tsunami monitoring buoys in the Southwest Pacific Ocean
title_short New and known free-living nematode species (Nematoda: Chromadorea) from offshore tsunami monitoring buoys in the Southwest Pacific Ocean
title_sort new and known free living nematode species nematoda chromadorea from offshore tsunami monitoring buoys in the southwest pacific ocean
topic Nematoda
Monhysterida
Chromadorida
Epiphytic
New species
url https://peerj.com/articles/19789.pdf
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