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Marine tardigrades of Princess Alice Bank (Azores, Northeast Atlantic) with a description of a new species of Quisarctus Fujimoto, 2015.

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Title: Marine tardigrades of Princess Alice Bank (Azores, Northeast Atlantic) with a description of a new species of Quisarctus Fujimoto, 2015.
Authors: Trokhymchuk RR; V.N. Karazin Kharkiv National University; Svobody Square; 4; 61022; Kharkiv; Ukraine; German Centre for Marine Biodiversity Research (DZMB); Senckenberg am Meer; Sdstrand 44; 26382; Wilhelmshaven; Germany. rtrokhymchuk@gmail.com., Arbizu PM; German Centre for Marine Biodiversity Research (DZMB); Senckenberg am Meer; Sdstrand 44; 26382; Wilhelmshaven; Germany. pedro.martinez@senckenberg.de., Kristensen RM; Natural History Museum of Denmark; University of Copenhagen; Universitetsparken 15; DK-2100 Copenhagen Denmark. rmkristensen@snm.ku.dk., Kieneke A; German Centre for Marine Biodiversity Research (DZMB); Senckenberg am Meer; Sdstrand 44; 26382; Wilhelmshaven; Germany. alexander.kieneke@senckenberg.de.
Source: Zootaxa [Zootaxa] 2025 Oct 16; Vol. 5711 (1), pp. 125-139. Date of Electronic Publication: 2025 Oct 16.
Publication Type: Journal Article
Language: English
Journal Info: Publisher: Magnolia Press Country of Publication: New Zealand NLM ID: 101179386 Publication Model: Electronic Cited Medium: Internet ISSN: 1175-5334 (Electronic) Linking ISSN: 11755326 NLM ISO Abbreviation: Zootaxa Subsets: MEDLINE
Imprint Name(s): Original Publication: Auckland, N.Z. : Magnolia Press, [2001]-
MeSH Terms: Tardigrada*/classification , Tardigrada*/anatomy & histology , Tardigrada*/growth & development, Animal Structures/anatomy & histology ; Animal Structures/growth & development ; Animals ; Male ; Female ; Azores ; Animal Distribution ; Organ Size ; Body Size ; Atlantic Ocean ; Ecosystem
Abstract: A new marine tardigrade, Quisarctus armatus sp. nov., found in samples from 151306 m depths at the Princess Alice Bank (PAB), south of the Azores archipelago, is described in this study. It is the second species in the genus and differs from its putative sister species Q. yasumurai by the shape of leg IV sensory organ, the presence of lipoid eyes, a partially folded cuticle of the digits and an elongated mouth cone. Quisarctus armatus sp. nov. shows sexual dimorphism with the length of primary clavae, the shape of leg IV sensory organ, and with differently shaped cirri E in females and males. The associated marine tardigrade fauna of PAB consists of Neostygarctus oceanopolis, Chrysoarctus briandi and representatives of Halechiniscidae. The known marine tardigrade fauna from the Azores now covers six genera with four identified species plus records of Halechiniscidae.
Entry Date(s): Date Created: 20251021 Date Completed: 20251021 Latest Revision: 20251021
Update Code: 20260130
DOI: 10.11646/zootaxa.5711.1.6
PMID: 41119595
Database: MEDLINE
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  Data: Marine tardigrades of Princess Alice Bank (Azores, Northeast Atlantic) with a description of a new species of Quisarctus Fujimoto, 2015.
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  Data: <searchLink fieldCode="AU" term="%22Trokhymchuk+RR%22">Trokhymchuk RR</searchLink>; V.N. Karazin Kharkiv National University; Svobody Square; 4; 61022; Kharkiv; Ukraine; German Centre for Marine Biodiversity Research (DZMB); Senckenberg am Meer; Sdstrand 44; 26382; Wilhelmshaven; Germany. rtrokhymchuk@gmail.com.<br /><searchLink fieldCode="AU" term="%22Arbizu+PM%22">Arbizu PM</searchLink>; German Centre for Marine Biodiversity Research (DZMB); Senckenberg am Meer; Sdstrand 44; 26382; Wilhelmshaven; Germany. pedro.martinez@senckenberg.de.<br /><searchLink fieldCode="AU" term="%22Kristensen+RM%22">Kristensen RM</searchLink>; Natural History Museum of Denmark; University of Copenhagen; Universitetsparken 15; DK-2100 Copenhagen Denmark. rmkristensen@snm.ku.dk.<br /><searchLink fieldCode="AU" term="%22Kieneke+A%22">Kieneke A</searchLink>; German Centre for Marine Biodiversity Research (DZMB); Senckenberg am Meer; Sdstrand 44; 26382; Wilhelmshaven; Germany. alexander.kieneke@senckenberg.de.
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  Data: <searchLink fieldCode="JN" term="%22101179386%22">Zootaxa</searchLink> [Zootaxa] 2025 Oct 16; Vol. 5711 (1), pp. 125-139. <i>Date of Electronic Publication: </i>2025 Oct 16.
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  Data: <i>Publisher: </i><searchLink fieldCode="PB" term="%22Magnolia+Press%22">Magnolia Press </searchLink><i>Country of Publication: </i>New Zealand <i>NLM ID: </i>101179386 <i>Publication Model: </i>Electronic <i>Cited Medium: </i>Internet <i>ISSN: </i>1175-5334 (Electronic) <i>Linking ISSN: </i><searchLink fieldCode="IS" term="%2211755326%22">11755326 </searchLink><i>NLM ISO Abbreviation: </i>Zootaxa <i>Subsets: </i>MEDLINE
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  Data: <i>Original Publication</i>: Auckland, N.Z. : Magnolia Press, [2001]-
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  Data: <searchLink fieldCode="MM" term="%22Tardigrada%22">Tardigrada*</searchLink>/<searchLink fieldCode="MM" term="%22Tardigrada+classification%22">classification</searchLink> <br /><searchLink fieldCode="MM" term="%22Tardigrada%22">Tardigrada*</searchLink>/<searchLink fieldCode="MM" term="%22Tardigrada+anatomy+%26+histology%22">anatomy & histology</searchLink> <br /><searchLink fieldCode="MM" term="%22Tardigrada%22">Tardigrada*</searchLink>/<searchLink fieldCode="MM" term="%22Tardigrada+growth+%26+development%22">growth & development</searchLink><br /><searchLink fieldCode="MH" term="%22Animal+Structures%22">Animal Structures</searchLink>/<searchLink fieldCode="MH" term="%22Animal+Structures+anatomy+%26+histology%22">anatomy & histology</searchLink> ; <searchLink fieldCode="MH" term="%22Animal+Structures%22">Animal Structures</searchLink>/<searchLink fieldCode="MH" term="%22Animal+Structures+growth+%26+development%22">growth & development</searchLink> ; <searchLink fieldCode="MH" term="%22Animals%22">Animals</searchLink> ; <searchLink fieldCode="MH" term="%22Male%22">Male</searchLink> ; <searchLink fieldCode="MH" term="%22Female%22">Female</searchLink> ; <searchLink fieldCode="MH" term="%22Azores%22">Azores</searchLink> ; <searchLink fieldCode="MH" term="%22Animal+Distribution%22">Animal Distribution</searchLink> ; <searchLink fieldCode="MH" term="%22Organ+Size%22">Organ Size</searchLink> ; <searchLink fieldCode="MH" term="%22Body+Size%22">Body Size</searchLink> ; <searchLink fieldCode="MH" term="%22Atlantic+Ocean%22">Atlantic Ocean</searchLink> ; <searchLink fieldCode="MH" term="%22Ecosystem%22">Ecosystem</searchLink>
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  Data: A new marine tardigrade, Quisarctus armatus sp. nov., found in samples from 151306 m depths at the Princess Alice Bank (PAB), south of the Azores archipelago, is described in this study. It is the second species in the genus and differs from its putative sister species Q. yasumurai by the shape of leg IV sensory organ, the presence of lipoid eyes, a partially folded cuticle of the digits and an elongated mouth cone. Quisarctus armatus sp. nov. shows sexual dimorphism with the length of primary clavae, the shape of leg IV sensory organ, and with differently shaped cirri E in females and males. The associated marine tardigrade fauna of PAB consists of Neostygarctus oceanopolis, Chrysoarctus briandi and representatives of Halechiniscidae. The known marine tardigrade fauna from the Azores now covers six genera with four identified species plus records of Halechiniscidae.
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  Data: <i>Date Created: </i>20251021 <i>Date Completed: </i>20251021 <i>Latest Revision: </i>20251021
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  Data: 10.11646/zootaxa.5711.1.6
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        Text: English
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      – SubjectFull: Animal Structures anatomy & histology
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      – SubjectFull: Animal Structures growth & development
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      – SubjectFull: Tardigrada classification
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      – SubjectFull: Tardigrada growth & development
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      – TitleFull: Marine tardigrades of Princess Alice Bank (Azores, Northeast Atlantic) with a description of a new species of Quisarctus Fujimoto, 2015.
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