Citation:

PANGAEA.848966, Supplement to: Nitsche, Frank; Weitere, Markus; Scheckenbach, Frank; Hausmann, Klaus; Wylezich, Claudia; Arndt, Hartmut (2007): Deep sea records of Choanoflagellates with a description of two new species. Acta Protozoologica, 46, 99-106

Name: (Table 1) Statistics of size measurements of Lagenoeca antarctica sp. n. and Salpingoeca abyssalis sp. n. (floating form) sampled during POLARSTERN cruise ANT-XXII/2 and METEOR cruise M63/2
Creator: Frank Nitsche
Published: 2007
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Despite their high abundance and their high importance for the oceanic matter flux, heterotrophic nanoflagellates are only poorly studied in the deep-sea regions. Studies on the choanoflagellate distribution during two deep-sea expeditions, to the South Atlantic (5038 m) and Antarctica (Weddell Sea, 2551 m), revealed the deepest records of choanoflagellates so far. A new species, (Lagenoeca antarctica) with a conspicuous spike structure on the theca is described from deep Antarctic waters. Lagenoeca antarctica sp. n. is a solitary unstalked free living salpingoecid-like choanoflagellate. The protoplast is surrounded by a typical theca with unique spikes only visible in SEM micrographs. The ovoid cell nearly fills the whole theca and ranges in size from 4 to 6 µm. The collar measures 2-3 µm and the flagellum 3-5 µm. A second species, Salpingoeca abyssalis sp. n., was isolated from the abyssal plain of the South Atlantic (5038 m depth). Floating and attached forms were observed. The protoplast ranges from to 2 to 4 µm in length and 1 to 2 µm in width. The collar is about the same length as the protoplast and the flagellum has 2 to 2.5 × the length of the protoplast. Phylogenetic analyses based on a fragment of SSU rDNA revealed Salpingoeca abyssalis to cluster together with a marine isolate of Salpingoeca infusionum while Lagenoeca antarctica clusters separately from the other codonosigid and salpingoecid taxa. Salpingoeca abyssalis and an undetermined Monosiga species seems to be the first choanoflagellate species recorded from the abyssal plain.

Coverage:

Median Latitude: -45.936702 * Median Longitude: -21.769860 * South-bound Latitude: -63.761670 * West-bound Longitude: -50.886670 * North-bound Latitude: -28.111733 * East-bound Longitude: 7.346950

Date/Time Start: 2005-01-05T00:00:00 * Date/Time End: 2005-03-04T03:08:00

Minimum DEPTH, water: 2551 m * Maximum DEPTH, water: 5038 m

Event(s):

M63/2_37MUC (37MUC) * Latitude: -28.111733 * Longitude: 7.346950 * Date/Time: 2005-03-04T03:08:00 * Elevation: -5030.0 m * Campaign: (AFRIDEEP) * Basis: * Method/Device: MultiCorer (MUC)

PS67/010-2 * Latitude: -63.761670 * Longitude: -50.886670 * Date/Time: 2005-01-05T00:00:00 * Location: Weddell Sea * Campaign: (PS67 ISPOL) * Basis: * Method/Device: (NIS) * Comment: Collected by M. Esser

Comment:

n = 25

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Event label	Event		Nitsche, Frank
2	Date/Time of event	Date/Time		Nitsche, Frank
3	Latitude of event	Latitude		Nitsche, Frank
4	Longitude of event	Longitude		Nitsche, Frank
5	Species	Species		Nitsche, Frank	sp. nova
6	Ocean and sea region	OS region		Nitsche, Frank
7	DEPTH, water	Depth water	m	Nitsche, Frank	Geocode
8	Length	l	µm	Nitsche, Frank	protoplast, average
9	Length, standard deviation	l std dev	±	Nitsche, Frank	protoplast
10	Length	l	µm	Nitsche, Frank	protoplast, max
11	Length	l	µm	Nitsche, Frank	protoplast, min
12	Width	w	µm	Nitsche, Frank	protoplast, average
13	Width, standard deviation	w std dev	±	Nitsche, Frank	protoplast
14	Width	w	µm	Nitsche, Frank	protoplast, max
15	Width	w	µm	Nitsche, Frank	protoplast, min
16	Length	l	µm	Nitsche, Frank	collar, average
17	Length, standard deviation	l std dev	±	Nitsche, Frank	collar
18	Length	l	µm	Nitsche, Frank	collar, max
19	Length	l	µm	Nitsche, Frank	collar, min
20	Length	l	µm	Nitsche, Frank	flagellum, average
21	Length, standard deviation	l std dev	±	Nitsche, Frank	flagellum
22	Length	l	µm	Nitsche, Frank	flagellum, max
23	Length	l	µm	Nitsche, Frank	flagellum, min

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

36 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Event	2 Date/Time	3 Latitude	4 Longitude	5 Species (sp. nova)	6 OS region	7 Depth water [m]	8 l [µm] (protoplast, average)	9 l std dev [±] (protoplast)	10 l [µm] (protoplast, max)	11 l [µm] (protoplast, min)	12 w [µm] (protoplast, average)	13 w std dev [±] (protoplast)	14 w [µm] (protoplast, max)	15 w [µm] (protoplast, min)	16 l [µm] (collar, average)	17 l std dev [±] (collar)	18 l [µm] (collar, max)	19 l [µm] (collar, min)	20 l [µm] (flagellum, average)	21 l std dev [±] (flagellum)	22 l [µm] (flagellum, max)	23 l [µm] (flagellum, min)
PS67/010-2	2005-01-05	-63.7617	-50.8867	Lagenoeca antarctica	Bathypelagial of the Weddell Sea	2551	5.05	0.76	6	4	2.43	0.41	3	2	2.47	0.39	3	2	4.03	0.81	5	3
M63/2_37MUC	2005-03-04	-28.1117	7.3470	Salpingoeca abyssalis	Cape Abyssal Plain (South Atlantic)	5038	2.63	0.68	4	2	1.28	0.35	2	1	2.52	0.66	4	2	5.54	1.53	10	4