Seasonal dynamics of the copepod community in a tropical monsoonal estuary and the role of sex ratio in their abundance pattern

G. Vineetha; N. V. Madhu; K. K. Kusum; P. M. Sooria

doi:10.1186/s40555-015-0131-x

Zoological Studies

Table 3 Result of the SIMPER analysis exhibiting the characteristic species of each season

From: Seasonal dynamics of the copepod community in a tropical monsoonal estuary and the role of sex ratio in their abundance pattern

Species	Av. Abund	Av. Sim	Sim/SD	Contrib %	Cum. %
Pre-monsoon
*Bestiolina similis*	5.85	16.66	4.25	36.59	36.59
*Acartia plumosa*	4.61	11.17	1.52	24.53	61.11
Acartiella keralensis	2.94	3.76	0.48	8.26	69.37
Acartia centrura	1.87	3.14	0.71	6.91	76.28
Oithona brevicornis	1.54	2.86	0.7	6.29	82.56
Pseudodiaptomus annandalei	1.07	1.54	0.67	3.38	85.94
Labidocera pectinata	0.99	1.45	0.71	3.19	89.13
Centropages alcocki	0.88	1.01	0.5	2.22	91.35
Monsoon
*Acartia plumosa*	2.2	7.92	2.93	16.44	16.44
*Bestiolina similis*	2.39	7.43	3.29	15.43	31.87
*Acartiella gravelyi*	1.66	6.78	2.01	14.07	45.94
*Mesocyclops* sps	1.08	4.92	1.44	10.22	56.16
*Allodiaptomus mirabilipes*	1.09	4.19	1.41	8.69	64.85
*Oithona brevicornis*	1.45	3.74	2.47	7.76	72.61
Pseudodiaptomus malayalus	0.9	2.98	0.94	6.18	78.79
*Heliodiaptomus cinctus*	0.99	2.85	1.26	5.91	84.71
Pseudodiaptomus annandalei	1.01	2.6	0.92	5.41	90.11
Post-monsoon
*Bestiolina similis*	4.23	10.2	3.99	24.1	24.1
*Acartia plumosa*	3.48	6.45	1.42	15.24	39.34
*Oithona brevicornis*	2.37	5.01	1.63	11.85	51.19
*Acartia centrura*	1.95	2.98	1.02	7.03	58.23
*Pseudodiaptomus annandalei*	1.26	2.49	1.5	5.89	64.12
Acartiella keralensis	1.45	1.86	0.58	4.39	68.51
*Pseudodiaptomus serricaudatus*	1.3	1.78	1.02	4.21	72.72
Centropages alcocki	1.17	1.23	0.71	2.9	75.62
Pseudodiaptomus malayalus	1.07	1.12	0.5	2.66	78.28
Centropages furcatus	1.3	1.11	0.51	2.61	80.89
Subeucalanus subcrassus	1.07	0.95	0.51	2.25	83.14
Centropages calaninus	0.75	0.95	0.51	2.25	85.38
Acartiella gravelyi	0.83	0.94	0.46	2.23	87.61
Undinula vulgaris	1.09	0.91	0.51	2.15	89.76
Centropages trispinosus	0.95	0.84	0.51	1.99	91.75

The analysis was performed based on the fourth root transformed abundance data of copepod species. As for a good charactering species, the average similarity for a particular taxa within a group should be greater than its intragroup standard deviation (SD) by a factor of at least one, they were marked with bold letters Av average, Abund abundance, Sim similarity, Contrib contribution, Cum. cumulative

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