Diet of the European eel Anguilla anguilla (Linnaeus, 1758) in two transitional waters of Southwestern Mediterranean Author Derbal, Farid Author Hamdi, Sandra Author Rouag-Laouira, Lydia Author Chaoui, Lamya Author Kara, Mohamed Hichem text Cybium 2022 46 1 3 11 http://dx.doi.org/10.26028/cybium/2022-461-001 journal article 292139 10.26028/cybium/2022-461-001 9ec8d15a-95bf-49dc-a59f-e03f9b218774 2101-0315 10836082

Table I. – Diet composition of Anguilla anguilla in Mellah lagoon and classification of ingested preys according to the % IRI importance. Ni: number of gut containing prey; n i: number of individuals of a prey; Fi: frequency of occurrence of prey; Pi: prey weight; Cn: numeric percentage of a prey; Cp: weight percentage of a prey; % IRI: Index of relative importance.

Items	Cn(%)	Cp(%)	Fi(%)	IRI	IRI (%)
ARTHROPODA	71.86	70.34	67.73	9631.55	89.98
Amphipoda	1.30	0.12	0.71	1.00
Microdeutopus gryllotalpa	1.30	0.12	0.71	1.00
Decapoda macrura	60.17	59.71	52.48	6291.51
Palaemon adspersus	37.66	29.40	19.86	1331.75
Penaeus kerathurus	4.76	16.40	7.09	150.10
Und.	17.75	13.90	25.53	808.13
Decapoda brachyura	10.39	10.52	14.54	304.03
Carcinus aestuarii	4.33	5.79	4.96	50.22
Und.	6.06	4.73	9.57	103.36
CHORDATA	18.40	26.82	22.34	1010.23	9.44
Osteichthyes	18.40	26.82	22.34	1010.23
Atherina lagunae	4.76	7.88	4.96	62.78
Gobius niger	1.95	4.18	1.42	8.69
Aphanius fasciatus	1.95	3.60	0.35	1.97
Und.	9.74	11.16	15.60	326.15
MOLLUSCA	6.28	2.66	4.96	44.35	0.41
Gastropoda	0.22	0.02	0.35	0.08
Bivalvia	0.87	0.31	1.42	1.67
Mytilus galloprovincialis	0.43	0.12	0.71	0.39
Cardium glaucum	0.22	0.16	0.35	0.13
Abra ovata	0.22	0.03	0.35	0.09
Und.	5.19	2.33	3.19	24.01
MACROPHYTA	3.46	0.18	4.96	18.09	0.17
Ruppia sp.	3.46	0.18	4.96	18.09