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Promachocrinus unruhi Antarctic Fether Star

Promachocrinus unruhi is commonly referred to as Antarctic Fether Star. Difficulty in the aquarium: Cold water animal. Toxicity: Toxic hazard unknown.


Profile

lexID:
15890 
AphiaID:
1674044 
Scientific:
Promachocrinus unruhi 
German:
Antarktischer Fedestern 
English:
Antarctic Fether Star 
Category:
Sea Pens 
Family tree:
Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Comatulida (Order) > Antedonidae (Family) > Promachocrinus (Genus) > unruhi (Species) 
Initial determination:
McLaughlin, Wilson & Rouse, 2023 
Occurrence:
Antarctica, circum antarctic 
Sea depth:
Meter 
Size:
up to 7.87" (20 cm) 
Food:
Zooplankton 
Difficulty:
Cold water animal 
Offspring:
Not available as offspring 
Toxicity:
Toxic hazard unknown 
CITES:
Not evaluated 
Red List:
Not evaluated (NE) 
More related species
in this lexicon:
 
Author:
Publisher:
Meerwasser-Lexikon.de
Created:
Last edit:
2023-08-26 13:07:03 

Info

Very many aquarists are familiar with the colorful and very magnificent sea feathers from the tropical warm oceans of the earth.
As early as 1879, a sea feather from the extremely cold waters around the Kerguelen archipelago, a subantarctic group of islands in the southern Indian Ocean, was first described.
For a long time, findings of Arctic feathers were treated as the "Circum-Antarctic species Promachocrinus kerguelensis",

Recent research by Drs. Emily L. McLaughlin, Nerida G. Wilson, and Greg W. Rouse on Arctic sea feathers, using specimens landed with trawls, now leads to the "Promachocrinus kerguelensis complex," which, after extensive DNA studies, morphological analysis of ossicles, and examination of body pigmentation, now includes the following species:

Promachocrinus kerguelensis Carpenter, 1879
Promachocrinus vanhoeffenianus Minckert, 1905 (endemic to the Davis Sea)
Promachocrinus joubini Vaney, 1910,
Promachocrinus mawsoni (Clark, 1937) (transferred from Florometra and four previously unnamed species now first described).

Promachocrinus fragarius McLaughlin, Wilson and Rouse, 2023
Promachocrinus unruhi McLaughlin, Wilson and Rouse, 2023
Promachocrinus uskglassi McLaughlin, Wilson and Rouse, 2023
Promachocrinus wattsorum McLaughlin, Wilson and Rouse, 2023 (endemic around the Prince Edward Islands).

According to Dr. Rouse, there was originally only one species among the Antarctic feather star groups - the so-called "Promachocrinus kerguelensis".
Now the team was able to identify 4 new sea feather species.
This means that there are now a total of 8 species that belong to the Antarctic feather stars.

Source:
Resolving the taxonomy of the Antarctic feather star species complex Promachocrinus ‘kerguelensis’ (Echinodermata: Crinoidea)
Emily L. McLaughlin, Nerida G. Wilson and Greg W. Rouse
Invertebrate Systematics 37(7) 498-527 https://doi.org/10.1071/IS22057
Submitted: 2 November 2022 Accepted: 15 June 2023 Published: 14 July 2023

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