Citation:

PANGAEA.605330, Supplement to: Weigmann, R (1970): Zur Ökologie und Ernährungsbiologie der Euphausiaceen (Crustacea) im Arabischen Meer. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe D Biologie, Gebrüder Bornträger, Berlin, Stuttgart, D5, 11-52

Name: Relative abundance of euphausiids (Crustacea) in water samples of the Arabian Sea (Table 2)
Creator: Renate Weigmann
Published: 1970
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

In the present paper, the ecology and feeding habits of euphausiids are described. The samples were taken at the time of the NE-monsoon (1964/65) by R. V. "Meteor" in the Arabian Sea and adjacent waters. 24 species were determined. According to distribution of the species, the following marine areas can be distinguished:

Arabian Sea: 24 species, dominant are Euphausia diomedeae, E. tenera, E. distinguenda, Stylocheiron carinatum.

Gulf of Aden: 10 species, dominant are Euphausia diomedeae, E. distinguenda.

Red Sea: 6 species, dominant are Euphausia diomedeae, E. distinguenda.

Gulf of Oman : 5 Species, dominant are Euphausia distinguenda, Pseudeupbaufia latifrons.

Persian Gulf: 1 species - Pseudeuphausia latifrons.

The total number of euphausiids indicate the biomass of this group. High densities of euphausiids (200-299 and > 300 individuals/100 m**3) occur in the innermost part of the Gulf cf Aden, in the area south of the equator near the African east coast, near Karachi (Indian west coast) and in the Persian Gulf. Comparison with data relating to production biology confirms that these are eutrophic zones which coincide with areas in which upwelling occurs at the time of the NE-monsoon. The central part of the Arabian Sea differs from adjacent waters by virtue of less dense euphausiid populations (> 199 individuals/100 m**3). Measurements relating to production biology demonstrate a relatively low concentration of primary food sources.

Food material was ascertained by analysis of stomach content. The following omnivorous species were examined: Euphausia diomedeae, E. distinguenda, E. tenera, Pseudeuphausia latifrons and Thysanopoda tricuspidata. Apart from crustacean remains large numbers of Foraminifera, Radiolaria, tintinnids, dinoflagellates were found in the stomachs. Quantitatively crustaceans form the most important item in the diet. Food selection on the basis of size and form appears to be restricted to certain genera of tintinnids. The genera Stylocheiron and Nematoscelis are predators. Only crustacean remains were found in the stomachs of Stylocheiron abbreviatum, whereas Radiolaria, Foraminifera and tintinnids occurred to some extent in Nematasceli sp.

Different euphausiids in the food chain in the Arabian Sea. In omnivorous species the position is variable, since they not only feed by filtering autotrophic and heterotrophic Protista, but also by predation on zooplankton. Carnivorous species without filtering apparatus feed exclusively on zooplankton of the size of copepods. Only these species are well established as occupying a higher position in the food chain.

The parasitic protozoan Tbalassomyces fagei was found on Euphausia diomedeae, E. fenera, E. distinguenda and E. sanzoi.

Coverage:

Median Latitude: 12.748557 * Median Longitude: 56.542241 * South-bound Latitude: -5.013333 * West-bound Longitude: 41.150000 * North-bound Latitude: 27.216000 * East-bound Longitude: 75.033000

Date/Time Start: 1964-11-29T00:00:00 * Date/Time End: 1965-04-15T00:00:00

Minimum DEPTH, water: 0 m * Maximum DEPTH, water: 0 m

Event(s):

M1_NET042 (M1_042) * Latitude: 12.550000 * Longitude: 43.766000 * Date/Time: 1964-11-29T00:00:00 * Elevation: -960.0 m * Location: Golf of Aden, Arabian Sea * Campaign: (IIOE - International Indian Ocean Expedition) * Basis: Meteor (1964) * Method/Device: Indian Ocean Standard Net (IOSN)

M1_NET049 (M1_049) * Latitude: 12.166000 * Longitude: 43.683000 * Date/Time: 1964-11-30T00:00:00 * Elevation: -406.0 m * Location: Golf of Aden, Arabian Sea * Campaign: (IIOE - International Indian Ocean Expedition) * Basis: Meteor (1964) * Method/Device: Indian Ocean Standard Net (IOSN)

M1_NET052 (M1_052) * Latitude: 12.366000 * Longitude: 43.966000 * Date/Time: 1964-12-01T00:00:00 * Elevation: -511.0 m * Location: Golf of Aden, Arabian Sea * Campaign: (IIOE - International Indian Ocean Expedition) * Basis: Meteor (1964) * Method/Device: Indian Ocean Standard Net (IOSN)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Event label	Event
2	Latitude of event	Latitude
3	Longitude of event	Longitude
4	DEPTH, water	Depth water	m		Geocode
5	Pseudeuphausia latifrons	P. latifrons	%	Weigmann, Renate
6	Euphausia sanzoi	E. sanzoi	%	Weigmann, Renate
7	Euphausia distinguenda	E. distinguenda	%	Weigmann, Renate
8	Stylocheiron affine	S. affine	%	Weigmann, Renate
9	Euphauaia diomedeae	E. diomedeae	%	Weigmann, Renate
10	Stylocheiron carinatum	S. carinatum	%	Weigmann, Renate
11	Euphausia tenera	E. tenera	%	Weigmann, Renate
12	Thysanopoda tricuspidata	T. tricuspidata	%	Weigmann, Renate
13	Stylocheiron abbreviatum	S. abbreviatum	%	Weigmann, Renate
14	Stylocheiron microphthalma	S. microphthalma	%	Weigmann, Renate
15	Euphausia paragibba	E. paragibba	%	Weigmann, Renate
16	Thysanopoda monacantha	T. monacantha	%	Weigmann, Renate
17	Euphausia mutica	E. mutica	%	Weigmann, Renate
18	Euphausia brevis	E. brevis	%	Weigmann, Renate
19	Thysanopoda aequalis	T. aequalis	%	Weigmann, Renate
20	Nematoscelis tenella	N. tenella	%	Weigmann, Renate
21	Nematobrachion flexipes	N. flexipes	%	Weigmann, Renate
22	Stylocheiron longicorne	S. longicorne	%	Weigmann, Renate
23	Euphausia similis	E. similis	%	Weigmann, Renate
24	Thysanopoda obtusifrons	T. obtusifrons	%	Weigmann, Renate
25	Euphausia pseudogibba	E. pseudogibba	%	Weigmann, Renate
26	Stylocheiron suhmii	S. suhmii	%	Weigmann, Renate
27	Nematoscelis sp.	Nematoscelis sp.	%	Weigmann, Renate
28	Euphausiacea	Euphausiacea	#	Weigmann, Renate
29	Number of species	Spec No	#	Weigmann, Renate
30	Euphausiacea	Euphaus	#/m³	Weigmann, Renate

License:

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

Size:

2440 data points

Data

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

1 Event	2 Latitude	3 Longitude	5 P. latifrons [%]	6 E. sanzoi [%]	7 E. distinguenda [%]	8 S. affine [%]	9 E. diomedeae [%]	10 S. carinatum [%]	11 E. tenera [%]	12 T. tricuspidata [%]	13 S. abbreviatum [%]	14 S. microphthalma [%]	15 E. paragibba [%]	16 T. monacantha [%]	17 E. mutica [%]	18 E. brevis [%]	19 T. aequalis [%]	20 N. tenella [%]	21 N. flexipes [%]	22 S. longicorne [%]	23 E. similis [%]	24 T. obtusifrons [%]	25 E. pseudogibba [%]	26 S. suhmii [%]	27 Nematoscelis sp. [%]	28 Euphausiacea [#]	29 Spec No [#]	30 Euphaus [#/m³]
M1_NET042	12.5500	43.7660	0	<1	76	2	23	<1	0	0	0	0	0	0	0	0	0	0	0	6	0	0	0	0	5	616	6	2.44
M1_NET049	12.1660	43.6830	0	0	12	<1	61	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	<1	316	4	1.98
M1_NET052	12.3660	43.9660	0	<1	89	<1	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	<1	1762	4
M1_NET062	12.6000	43.2660	0	29	53	0	18	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	99	3	0.77
M1_NET066	15.1000	43.0660	0	2	82	<1	6	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	390	4
M1_NET071	15.9660	41.5660	0	0	8	0	88	0	0	0	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	25	3	0.16
M1_NET073	16.6330	41.1500	0	<1	38	16	41	0	0	0	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	322	5	0.40
M1_NET077	13.9000	48.1660	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	1
M1_NET093	12.7160	48.5330	0	0	22	12	24	6	3	0	0	0	0	0	0	0	0	0	2	0	0	0	0	0	26	356	6
M1_NET094	12.2330	48.7000	0	0	30	1	29	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	40	139	3	0.97
M1_NET101	12.2330	51.8000	0	0	32	7	8	6	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	36	72	5	0.50
M1_NET101	12.2330	51.8000	0	0	48	3	15	7	1	0	<1	0	0	0	0	0	0	<1	0	<1	0	0	0	0	18	186	8
M1_NET104	11.3567	53.1833	0	0	14	<1	22	4	0	0	0	0	0	0	0	0	0	0	<1	0	0	0	0	0	15	317	5	1.98
M1_NET106	10.8333	53.7733	0	0	<1	0	82	9	1	<1	0	0	0	0	0	0	0	0	2	0	0	0	0	0	4	264	6
M1_NET109	10.0000	54.6660	0	0	0	0	42	<1	48	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	218	4
M1_NET113	7.9660	51.5660	0	0	0	0	25	9	0	15	12	0	0	0	0	0	0	0	0	0	0	0	0	0	27	67	4
M1_NET114	8.0080	51.2130	0	0	60	0	16	12	2	1	0	0	0	1	0	0	0	0	0	0	0	0	0	0	4	304	6	1.83
M1_NET115	8.1300	50.8010	0	0	<1	0	87	<1	<1	<1	0	0	<1	0	0	0	0	0	0	0	0	0	0	0	0	160	6	0.12
M1_NET115	8.1300	50.8010	0	0	<1	<1	37	38	14	<1	<1	<1	<1	0	<1	0	0	0	0	<1	0	0	0	0	<1	3295	11
M1_NET124	5.9160	49.1830	0	0	5	<1	16	44	<1	<1	0	0	0	0	0	0	0	0	0	<1	0	0	0	0	4	372	7
M1_NET124	5.9160	49.1830	0	0	5	0	33	50	0	1	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	5	246	5	1.54
M1_NET124	5.9160	49.1830	0	0	2	<1	31	53	<1	<1	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	3	3658	8
M1_NET126	5.7333	49.5000	0	0	16	2	24	15	8	6	0	<1	0	0	0	0	0	0	0	0	0	0	0	0	20	266	8	1.66
M1_NET126	5.7333	49.5000	<1	0	16	<1	30	33	6	6	<1	<1	<1	0	0	0	0	0	0	0	0	0	0	0	7	1425	8
M1_NET129	5.0660	50.4330	0	0	8	1	63	4	7	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	3	519	8	3.24
M1_NET132	1.9333	49.0583	0	0	6	3	39	14	8	<1	3	<1	<1	0	0	0	0	0	0	0	0	0	0	0	8	286	8	1.79
M1_NET134	2.3917	48.5117	0	0	7	2	22	40	15	<1	0	0	<1	0	0	0	0	0	0	0	0	0	0	0	2	1185	6
M1_NET135	2.5660	48.2660	0	0	2	3	1	34	8	0	1	0	0	0	0	0	0	0	0	2	0	0	0	0	21	88	7
M1_NET136	2.7830	48.0000	0	0	0	0	60	19	0	5	0	0	0	0	0	0	0	0	0	0	0	0	0	0	15	173	3
M1_NET137	2.9660	47.7500	0	0	3	1	25	9	21	<1	2	0	0	0	0	0	0	0	0	0	0	0	0	0	21	384	7	2.40
M1_NET139	3.3660	47.3000	0	0	32	0	10	2	0	3	0	0	0	0	0	0	0	0	0	<1	0	0	0	0	43	218	5	1.36
M1_NET141	1.4660	44.8660	0	0	22	1	17	33	0	0	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	8	397	5	2.06
M1_NET145	0.8000	45.3830	0	0	17	5	6	36	0	2	1	0	8	0	0	0	0	0	0	0	0	0	0	0	16	87	7	0.54
M1_NET146	0.5160	45.6000	0	0	11	8	1	8	20	0	10	0	<1	0	0	0	0	0	0	0	0	0	0	0	10	187	7
M1_NET147	0.2910	45.8080	<1	0	9	5	36	11	4	<1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	12	234	8	1.33
M1_NET149	-0.2067	46.2500	0	0	12	7	18	18	18	0	1	<1	0	0	<1	0	0	0	0	0	0	0	0	0	6	294	8	1.84
M1_NET150	-0.6500	46.5910	0	0	14	12	2	36	6	0	0	2	0	0	0	0	0	0	0	0	0	0	0	0	10	209	6	1.31
M1_NET151	-2.6000	44.2333	0	<1	13	1	20	27	4	<1	<1	<1	<1	<1	<1	<1	0	0	0	0	0	0	0	0	15	507	13	2.88
M1_NET153	-2.0233	43.3800	0	0	13	2	3	38	7	0	5	0	0	0	0	0	0	0	0	0	0	0	0	0	12	408	6	2.04
M1_NET153	-2.0233	43.3800	<1	0	13	<1	22	28	8	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	6	509	7	3.18
M1_NET157	-1.2133	42.2250	0	0	9	2	55	8	<1	<1	<1	0	0	0	0	0	0	0	0	0	0	0	0	<1	22	1323	8	4.13
M1_NET158	-1.3000	41.9330	0	3	76	2	0	4	<1	<1	0	<1	0	0	0	0	0	0	0	0	0	0	0	0	10	572	7	1.79
M1_NET158	-1.3000	41.9330	0	1	97	0	<1	<1	<1	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	<1	3042	6
M1_NET167	-5.0133	42.1367	2	0	<1	8	4	37	21	<1	<1	<1	4	<1	<1	<1	<1	<1	0	<1	<1	0	0	0	4	1049	17
M1_NET173	-1.0000	57.9160	0	0	0	4	<1	34	8	0	0	0	0	<1	0	0	2	0	0	<1	0	<1	0	0	14	117	8
M1_NET173	-1.0000	57.9160	0	0	0	2	9	36	25	1	0	6	0	0	0	0	0	0	0	0	0	0	0	0	2	138	6	0.86
M1_NET173	-1.0000	57.9160	0	0	<1	1	11	42	18	2	<1	<1	1	<1	0	0	<1	3	0	0	0	0	0	0	7	210	12	0.53
M1_NET175	0.0000	57.8330	<1	0	0	6	6	25	14	1	<1	1	3	0	0	0	2	<1	0	1	0	0	0	0	32	415	11	1.30
M1_NET175	0.0000	57.8330	0	0	0	<1	5	69	8	3	<1	1	1	0	0	0	0	0	0	0	0	0	0	0	<1	4512	9
M1_NET180	5.2500	65.9380	0	0	2	<1	2	84	2	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	9	175	5	0.88
M1_NET181	7.5010	71.0580	0	0	0	5	1	58	6	5	0	0	0	<1	0	0	0	0	0	1	0	0	<1	0	9	85	8	0.27
M1_NET181	7.5010	71.0580	<1	0	0	0	0	51	<1	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	<1	39	488	5
M1_NET182	8.7700	73.7000	0	0	3	0	2	71	5	0	4	0	0	0	0	0	0	0	0	0	0	0	0	0	3	299	5	1.87
M1_NET182	8.7700	73.7000	0	0	2	3	2	52	7	<1	18	0	0	0	0	0	0	0	<1	3	0	0	0	0	6	320	9	1.33
M1_NET183	8.7160	73.9660	0	0	2	<1	5	74	2	2	<1	0	0	0	0	0	0	0	<1	0	0	0	0	0	6	421	8	2.63
M1_NET184	9.0160	74.2830	<1	0	2	10	12	37	<1	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	34	333	7	2.08
M1_NET184	9.0160	74.2830	<1	0	3	0	15	78	<1	<1	<1	0	0	<1	0	0	0	0	0	0	0	0	0	0	<1	1837	8
M1_NET186	9.3830	75.0330	0	0	2	<1	67	25	2	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	<1	462	6	2.89
M1_NET186	9.3830	75.0330	<1	0	1	0	32	55	3	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1786	6
M1_NET194	14.5660	73.4160	45	0	2	0	0	46	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	181	3	0.90
M1_NET195	14.4160	73.2330	51	0	6	<1	2	22	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	274	5	1.37
M1_NET197	14.3000	72.7330	16	0	5	15	2	53	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	6	207	5	0.65
M1_NET199	14.0500	72.0000	0	0	63	9	3	8	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	348	4	2.06
M1_NET200	13.8830	71.6000	0	0	57	3	8	<1	0	0	0	0	0	0	0	0	0	0	0	<1	0	0	0	0	0	192	5	0.96
M1_NET205	16.3160	68.8660	0	0	67	0	20	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	4	240	3	0.37
M1_NET209	17.3830	70.5660	0	0	57	0	14	3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	27	37	3	0.23
M1_NET210	17.6660	70.9500	<1	0	82	0	16	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	<1	1437	4
M1_NET214	16.5000	70.5660	81	0	17	0	0	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	495	3
M1_NET218	18.6160	70.1330	2	0	82	2	4	6	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	185	5	0.58
M1_NET218	18.6160	70.1330	<1	0	70	11	3	10	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	236	5	1.48
M1_NET220	18.3600	69.6000	1	0	74	0	7	3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1207	4
M1_NET222	19.5830	66.5830	0	0	68	13	1	15	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	298	4	0.93
M1_NET225	20.7330	67.5330	43	4	34	0	5	6	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	553	5
M1_NET233	22.0660	64.8000	0	0	62	10	8	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	202	4	0.28
M1_NET234	22.5410	65.4000	0	6	71	2	3	5	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	329	5	2.06
M1_NET235	23.0660	65.5660	0	<1	73	<1	3	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	432	5	0.60
M1_NET236	23.4160	65.8830	0	12	73	0	2	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	282	4	1.76
M1_NET238	23.7830	66.1660	1	0	94	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	96	4	0.33
M1_NET239	23.9660	66.3160	0	6	76	1	0	4	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	290	4	2.01
M1_NET243	22.4330	63.7830	0	0	68	19	2	5	0	0	0	0	0	0	0	0	0	0	0	<1	0	0	0	0	0	183	5	0.29
M1_NET244	22.9830	63.5160	<1	3	69	21	<1	3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	171	6	0.71
M1_NET245	23.1500	62.8830	<1	0	81	5	1	5	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	275	5	1.72
M1_NET247	23.0667	60.9833	0	0	74	16	<1	2	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	225	4	0.71
M1_NET247	23.0667	60.9833	0	0	64	7	9	0	0	0	0	0	0	0	0	0	0	0	0	6	0	0	0	0	2	67	4	0.08
M1_NET248	24.2167	59.0333	0	0	76	17	0	0	0	0	0	0	0	0	0	0	0	0	0	5	0	0	0	0	0	42	3	0.07
M1_NET253	25.4000	56.9660	3	3	72	11	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	210	4	0.87
M1_NET275	26.3300	54.4800	100	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1128	1
M1_NET277	26.1000	54.0000	100	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	40	1	0.29
M1_NET293	27.2160	52.1660	100	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	336	1	3.50
M1_NET294	27.0500	51.9300	100	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1154	1
M1_NET373	26.2000	55.3000	100	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1199	1
M1_NET379	26.9000	56.8000	100	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	166	1	1.73
M1_NET380	26.4000	56.5800	99	<1	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	700	3	2.18
M1_NET381	26.1500	56.5400	96	3	<1	0	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	136	4	2.12
M1_NET381	26.1500	56.5400	84	12	4	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	99	3	0.62