Spatial distribution of the nematodes in the subtidal community of the Central West Coast of India with emphasis on Tershellingia longicaudata (Nematoda: Linhomoeidae)

Figures & data

Figure 1. Station locations marked by numbers in the study area.

Table I. Stations and parameters

Station	Lat. (°N)	Long. (°E)	Depth (m)	Substrate	Gear used	Chl (μg g^–1)	OC (%)
1	17 30 00	71 12 00	500	Clayey	Box corer	0.11	2.17
2	17 30 00	71 12 00	500	Clayey	Box corer	0.16	1.88
3	17 30 00	72 44 00	50	Silty sand	Box corer	0.5	1.84
4	17 30 00	72 44 00	50	Silty sand	Box corer	0.19	3.56
5	15 25 02	73 48 00	15	Silty	van Veen Grab	0.04	0.58
6	15 25 40	73 48 17	9	Clayey	van Veen Grab	0.02	1.00
7	15 25 60	73 48 40	9	Clayey	van Veen Grab	0.02	1.55
8	15 25 00	73 48 40	8	Clayey	van Veen Grab	0.04	0.50
9	15 24 99	73 48 63	7	Clayey	van Veen Grab	0.03	1.96
10	15 25 04	73 48 85	7	Silty	van Veen Grab	0.02	1.44
11	15 30 00	73 40 00	23	Silty	van Veen Grab	0.09	0.11
12	15 30 00	73 35 00	35	Silty	van Veen Grab	3.22	0.14
13	15 30 00	73 00 00	112	Silty sand	van Veen Grab	2.21	0.14
14	15 00 00	73 45 00	43	Clayey	van Veen Grab	3.22	0.06
15	14 06 00	74 18 00	32	Silty	van Veen Grab	2.9	0.08
16	13 00 76	74 30 11	29	Silty	van Veen Grab	3.36	0.07
17	13 00 00	74 15 00	60	Silty sand	van Veen Grab	1.75	0.04
18	13 00 11	74 03 00	97	Silty	van Veen Grab	2.35	0.03

Figure 2. Correlation of water depth (m) with sediment chlorophyll-a (μg/g) and organic carbon (%).

Figure 3. Abundance (ind. 10 cm^–2) of mieiofaunal taxa at each station.

Figure 4. Correlation of meiofaunal and nematode abundance with sediment organic carbon (%).

Figure 5. Multi-dimensional scaling (MDS) ordination for untransformed meiofaunal (a) and nematode (b) abundance on a two-dimensional scale at each station location.

Figure 6. Bray–Curtis similarity cluster analysis based on nematode species abundance at each station location.

Table II. Occurrence of nematode species at the sampling stations

Genus/Stations	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
Actarjania sp.	–	–	–	–	+	+	+	+	+	+	+	+	+	+	+	–	+	+
Aerolaimus paucisetosus	–	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Anoplostoma sp.	+	+	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Apodontium sp.	–	–	–	–	–	–	–	–	+	–	–	–	–	–	–	–	–	–
Ascolaimus sp.	–	–	–	–	–	–	–	–	–	–	+	+	+	+	+	–	–	–
Axonolaimus sp.	–	–	+	+	–	–	+	+	–	+	+	–	–	–	–	+	+	–
Bathylaimus sp.	+	–	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–
Calligyrus sp.	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–	+	–	–
Calomicrolaimus sp.	–	–	–	+	–	–	–	–	–	–	+	–	–	–	–	–	–	–
Campylaimus sp.	–	–	+	+	–	–	–	–	–	–	+	+	+	–	–	+	–	–
Cantholaimus sp.	–	–	–	–	–	–	–	–	–	–	+	–	+	+	+	–	+	–
Ceramonema sp.	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Chaetonema sp.	–	+	+	+	–	–	–	–	–	–	–	+	–	–	–	–	+	–
Chromaspirina sp.	–	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Chromadorita sp.	–	–	–	+	–	–	–	+	–	–	–	+	+	–	+	+	+	+
Cobbia trefusaeformis	–	–	–	–	–	–	–	+	–	–	–	–	–	–	–	–	–	–
Comesa sp.	–	–	–	+	–	–	–	–	–	–	–	+	–	–	–	–	–	–
Daptonema sp.1	+	+	–	–	–	–	–	–	–	–	+	+	+	+	+	+	–	+
Daptonema sp.2	+	–	–	+	–	–	–	–	–	+	+	–	–	–	–	–	–	–
Desmodora sp.	–	–	–	–	–	+	–	–	–	–	+	+	+	+	–	–	+	–
Desmoscolex sp.	+	+	+	+	+	+	+	+	+	–	+	+	+	+	+	+	+	–
Dichromadora sp.	–	+	–	–	–	–	–	–	–	–	–	+	+	+	–	–	+	–
Diplopeltoides sp.	+	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Dorylaimopsis sp.	–	–	–	–	–	+	–	–	–	–	+	–	+	+	–	+	+	+
Draconema sp.	+	–	+	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Elzalia sp.	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Enoplolaimus sp.	–	–	–	–	–	+	–	–	–	–	–	–	–	+	–	–	–	–
Epacanthion sp.	–	–	–	–	–	–	–	–	–	–	+	–	+	+	–	–	+	–
Eumorpholaimus sp.	–	+	–	–	+	+	–	–	+	–	–	–	–	+	–	–	–	–
Eurystomina caesiterides	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Gammanema sp.	+	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Gnomoxyla sp.	–	–	+	–	+	–	+	–	+	–	–	–	–	–	–	+	–	–
Gomphionchus sp.	–	–	–	+	–	–	–	–	–	–	+	+	–	–	–	+	–	–
Gonionchus sp.	+	+	–	–	–	–	–	–	–	–	+	+	+	+	+	–	+	+
Greeffiella sp.	–	–	+	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Halalaimus isaitshikovi	–	+	+	+	–	+	–	–	+	+	+	+	+	+	+	+	+	–
Halanonchus sp.	+	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Halichoanolaimus sp.	–	–	+	+	–	+	–	+	–	–	+	+	+	–	–	+	–	–
Hopperia sp.	–	–	–	–	+	+	–	+	–	+	+	+	+	–	–	–	–	–
Latronema sp.1	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Latronema sp.2	–	–	–	–	–	–	–	–	–	+	+	+	–	–	+	–	–	–
Leptolaimus sp.	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Marylynnia sp.	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Megadesmolaimus sp.	–	–	+	–	–	–	–	–	–	–	–	–	+	–	–	–	–	–
Metachromadora sp.	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Metacyantholaimus sp.	–	–	–	–	–	–	–	–	–	+	–	+	–	–	–	–	–	–
Metadasynemalla sp.	–	+	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Metalinhomoeus sp.1	+	–	+	+	+	+	–	–	–	–	–	–	–	–	–	–	–	–
Meyersia sp.	–	–	–	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–
Microlaimus sp.	–	–	–	–	–	+	+	–	–	–	–	+	+	+	–	–	+	+
Molgolaimus sp.	–	–	–	–	–	–	–	–	–	–	–	–	+	+	+	+	+	+
Monhystridae	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	+	–
Notochaetosoma sp.	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Oncholaimidae	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	+
Oncholaimus sp.	+	–	–	–	–	–	–	–	–	–	+	+	+	+	+	–	–	–
Onyx sp.	–	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Oxystomina sp.	–	–	+	–	–	–	–	–	–	–	+	+	+	+	–	+	+	+
Paracomesoma sp.	–	–	–	–	–	–	–	–	–	+	+	+	–	+	+	+	–	–
Paralinhomoeus sp.	–	+	–	+	–	–	–	–	–	–	+	+	+	+	+	+	+	+
Paralongiciantholaimus sp.	–	–	–	–	–	–	–	–	–	–	+	–	+	+	–	+	–	–
Paramesonchium sp.	–	–	+	–	–	–	–	–	–	+	–	–	–	–	–	–	–	–
Paramicrolaimus sp.	–	–	–	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–
Paramonhystera sp.	+	+	–	–	–	–	–	–	–	–	–	+	+	+	–	–	–	–
Pierrikia sp.	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Polysigma sp.	+	+	+	+	–	+	–	–	+	–	+	+	+	+	–	–	+	–
Promonhystera sp.	–	+	+	–	+	–	–	–	–	–	+	+	+	+	–	+	+	+
Pselionema sp.	+	+	+	–	–	–	–	–	–	–	+	+	+	+	–	+	+	–
Quadricoma sp.	+	–	–	–	+	–	–	–	–	–	–	–	+	–	–	–	+	–
Rhabditis sp.	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Rhabdocoma sp.	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Sabatieria sp.	–	–	–	–	–	–	–	–	–	+	–	+	+	+	+	–	–	+
Sclachinematidae	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	+	–
Siphonolaimus sp.	–	–	–	–	+	+	–	+	+	+	–	–	–	+	–	+	+	–
Sphaerolaimus sp.	–	–	+	+	–	–	–	–	+	–	+	+	+	+	+	+	–	–
Spirinia sp.	–	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Spirobolbolaimus sp.	–	–	–	–	–	+	–	–	–	–	–	+	+	+	–	–	–	–
Steineria sp.	–	–	–	–	–	–	–	–	–	–	–	–	+	+	+	+	+	+
Subsphaerolaimus sp.	–	+	–	–	–	–	–	–	–	–	–	+	–	+	–	–	+	–
Tarvaia sp.	–	–	–	–	–	–	–	–	–	–	–	–	–	+	–	+	+	–
Terschellingia sp.1	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	+	+	–
Terschellingia longicaudata	–	–	+	+	+	+	–	–	+	+	+	+	–	–	+	+	+	+
Terschellingia sp.	–	+	+	+	–	–	–	–	–	–	+	–	+	+	+	+	+	–
Theristus sp.	–	–	–	–	–	–	–	–	–	+	–	+	+	+	+	–	–	+
Theristus sp.2	–	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Trichoma sp.	–	–	–	–	–	+	–	–	+	–	–	+	–	–	–	–	–	–
Trissonchulus sp.	–	+	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Vasostoma sp.	–	–	+	–	–	–	–	–	–	–	+	+	+	–	+	–	+	+
Viscosia abyssorum	–	–	–	+	–	–	–	+	+	–	+	–	–	–	–	–	–	–
Unidentified	–	+	+	+	–	–	+	–	–	–	–	–	–	–	–	–	–	–
Total no. of species	20	25	30	26	10	19	7	12	13	15	32	35	34	33	20	25	29	16

Table III. Details of nematode family and genera and percent occurrence and prevalence of T. longicaudata at various stations

Station	Nematode			T. longicaudata
	Families	Genera	Species	Occurrence	% abundance
1	14	20	20	–	0
2	17	25	25	–	0
3	16	30	30	+	9
4	16	26	26	+	5
5	6	9	10	+	37
6	11	18	19	+	8
7	7	7	7	–	0
8	9	11	12	–	0
9	10	12	13	+	5
10	8	14	15	+	54
11	17	32	32	+	60
12	17	35	35	+	13
13	17	34	34	–	0
14	17	33	33	–	0
15	12	20	20	+	29
16	15	25	25	+	57
17	17	29	29	+	7
18	8	16	16	+	86
Mean	13	22	22	–/+	21

Figure 7. Percent composition of Terschellingia longicaudata in nematodes and meiofauna (*stations with a silty type of sediment).