Digenea community structure of the Salema, Sarpa salpa (Linnaeus, 1758) (Teleostei, Sparidae), from the Central coast of Algeria Cover

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Digenea community structure of the Salema, Sarpa salpa (Linnaeus, 1758) (Teleostei, Sparidae), from the Central coast of Algeria

Volume 61 (2024): Issue 1 (March 2024)

By: A. Boukadoum and F. Tazerouti

Open Access

|Apr 2024

Figures & Tables

Collection sites of Sarpa salpa (n=114) from the Central coast of Algeria [Created by https://www.simplemappr.net. Accessed June 04, 2023]

The Digenean parasites infecting Sarpa salpa from the Central coast of Algeria: (a) Lepocreadium album (Ventral view), (b) Centroderma spinosissima (Ventral view), (c) Mesometra orbicularis (Ventral view), (d) Mesometra brachycoelia (Ventral view), (e) Wardula capitellata (Ventral view), (f) Elstia stossichianum (Ventral view), (g) Robphildollfusium fractum (Lateral view). (Ph) Pharynx, (OB) Oesophageal bulb, (T) Testes, (O) Ovary, (M) Metraterm, (CP) Cirrus pouch, (C) Ceaca, (VS) Ventral sucker, (OS) Oral sucker, (VF) Vitellarium follicles, (E) Eggs

Species accumulation curve used to evaluate the sampling effort of Sarpa salpa (n = 114) from the Central coast of Algeria and the number of species found.

The Spearman's correlation test evaluating the mean abundance and mean intensity of species with the host parameters (weight and total length)_

Digenea	Mean abundance				Mean intensity

	Weight (g)		Total length (cm)		Weight (g)		Total length (cm)

	r_s	p	r_s	p	r_s	p	r_s	p
Lepocreadium album	−0.408	0.363	−0.204	0.661	−0.408	0.363	−0.204	0.661
Centroderma spinosissima	−0.374	0.408	0.039	0.933	−0.374	0.408	0.039	0.933
Elstia stossichianum	−0.667	0.102	−0.143	0.76	−0.523	0.229	0.036	0.939
Mesometra brachycoelia	0.000	1.000	0.179	0.702	−0.643	0.119	−0.857	0.01^4*
Mesometra orbicularis	−0.571	0.18	−0.429	0.337	−0.393	0.383	−0.429	0.337
Wardula capitellata	−0.867	0.012^*	−0.906	0.005^**	−0.788	0.035^*	−0.896	0.006^**
Robphildollfusium fractum	0.536	0.215	0.786	0.036^*	0.464	0.294	0.75	0.052

Digenea species composition in Sarpa salpa (n = 114) from the Algerian Central coast

Digenea species	Number of infected fish	Number of parasites	Prevalence %	Mean abundance	Mean intensity	Range of intensity	Importance value
Lepocreadium album	1	30	0.88	0.26	30.00	30	Satellite
Centroderma spinosissima	4	13	3.51	0.11	3.25	1 – 8	Satellite
Elstia stossichianum	35	170	30.70	1.49	4.86	1 – 18	Satellite
Mesometra brachycoelia	55	1495	48.25	13.11	27.18	1 – 167	Secondary
Mesometra orbicularis	93	1565	81.58	13.73	16.83	1 – 115	Core
Wardula capitellata	11	21	9.65	0.18	1.91	1 – 4	Satellite
Robphildollfusium fractum	101	5428	88.60	47.61	53.74	1 – 242	Core

Species composition of the Digenea communities infecting Sarpa salpa_

Species number (P %)	Species composition	Infected hosts
Species number (P %)	Species composition	n	P %
1 (10.28 %)	R. f	9	8.41
1 (10.28 %)	M. o	2	1.87
2 (28.97%)	R. f - M. o	24	22.43
	R. f - M. b	2	1.87
	R. f - E. s	2	1.87
	M. o - M. b	1	0.93
	M. o - E. s	1	0.93
	M. o - W. c	1	0.93
3 (36.45%)	R. f - M. o - M. b	29	27.10
	R. f - M. o - E. s	7	6.54
	R. f - M. o - W. c	1	0.93
	R. f - E. s - C. s	1	0.93
	M. o - W. c - E. s	1	0.93
4 (18.96%)	R. f - M. o - M. b - E. s	15	14.02
	R. f - M. o - M. b - W. c	3	2.80
	R. f - M. o - E. s - W. c	2	1.87
5 (5.61)	R. f - M. o - M. b - E. s - C. s	3	2.80
	R. f - M. o - M. b - E. s - W. c	2	1.87
	R. f - M. o - E. s - L. a - W. c	1	0.93

The species richness estimated by Chao 1, Jacknife 1 and Jacknife 2_

	Number of species
Observed	7
Chao 1	7
Jacknife 1	7.99
Jacknife 2	8.97

Data relative to weight classes of Sarpa salpa_

Weight classes		73.5 – 170.42 g	170.43 – 267.35 g	267.36 – 364.28 g	364.29 – 461.21 g	461.22 – 558.14 g	558.15 – 655.07 g	655.08 – 752 g
Host examined		18	37	21	22	12	2	2
Host infected		17	35	20	22	9	2	2
Number of parasites		725	2456	1970	2663	591	171	146
Number of parasites per species	L. album	0	30	0	0	0	0	0
	C. spinosissima	0	1	8	4	0	0	0
	E. stossichianum	13	46	66	39	6	0	0
	M. brachycoelia	153	600	367	263	60	6	46
	M. orbicularis	190	450	452	406	43	13	11
	W. capitellata	14	2	5	0	0	0	0
	R. fractum	355	1327	1072	1951	482	152	89

Relationship between the species prevalence and the host's weight and length using the Chi square test_

Digenea	Prevalence
	Weight (g)		Total length (cm)

	χ²	p	χ²	p
Lepocreadium album	0.136	0.910	2.476	0.871
Centroderma spinosissima	3.43	0.674	2.425	0.877
Elstia stossichianum	8.301	0.217	5.390	0.495
Mesometra brachycoelia	4.455	0.615	7.647	0.265
Mesometra orbicularis	4.825	0.566	2.967	0.813
Wardula capitellata	22.475	0.001^*	24.229	0.000^*
Robphildollfusium fractum	8.005	0.238	7.454	0.281

Biodiversity parameters of the component community and infracommunity of Digenea species infecting Sarpa salpa from the Central coast, Algeria_

Component community				Infracommunity

Species richness (S)	Shannon Diversity Index (H′)	Evenness Shannon-Winner (J)	Dominance Simpson (D)	Dominant species	Berger-Parker Index (BP)	Mean species richness (mean ± SD)	Mean number of parasites per host (mean ± SD)
7	1.03	0.53	2.23	R. fractum	0.62	2.62 ± 1.21	76.37 ± 76.5

Data relative to length classes of Sarpa salpa_

Length classes		17.5 – 20.40 cm	20.41 – 23.31 cm	23.32 – 26.22 cm	26.23 – 29.13 cm	29.14 – 32.04 cm	32.05 – 34.95 cm	34.96 – 37.86 cm
Host examined		5	18	33	17	30	6	5
Host infected		5	16	32	16	29	5	4
Number of parasites		278	947	2492	1147	3187	354	317
Number of parasites per species	L. album	0	0	30	0	0	0	0
	C. spinosissima	0	0	1	8	4	0	0
	E. stossichianum	1	22	46	44	51	6	0
	M. brachycoelia	112	165	667	165	288	46	52
	M. orbicularis	70	164	424	400	436	47	24
	W. capitellata	7	7	7	0	0	0	0
	R. fractum	88	589	1317	530	2408	255	241

DOI: https://doi.org/10.2478/helm-2024-0006 | Journal eISSN: 1336-9083 | Journal ISSN: 0440-6605

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Language: English

Page range: 59 - 75

Submitted on: Aug 9, 2023

Accepted on: Jan 29, 2024

Published on: Apr 23, 2024

Published by: Slovak Academy of Sciences, Mathematical Institute

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

component community,

Related subjects:

Life sciences, other,

Clinical medicine,

Microbiology, virology and infection epidemiology

© 2024 A. Boukadoum, F. Tazerouti, published by Slovak Academy of Sciences, Mathematical Institute
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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