Comparative analysis of diet composition and its relation to morphological characteristics in juvenile fish of three lutjanid species in a Mexican Pacific coastal lagoon Author Aguilar-Betancourt, Consuelo M. Departamento de Estudios para el Desarrollo Sustentable de la Zona Costera, Universidad de Guadalajara, Gómez Farías 82, 48980 San Patricio-Melaque, Jalisco, Mexico & Canadian Rivers Institute, 100 Tucker Park Rd, E 2 L 4 A 6 Saint John, New Brunswick, NB, Canada coquiaguilar06@yahoo.es Author González-Sansón, Gaspar Departamento de Estudios para el Desarrollo Sustentable de la Zona Costera, Universidad de Guadalajara, Gómez Farías 82, 48980 San Patricio-Melaque, Jalisco, Mexico & Canadian Rivers Institute, 100 Tucker Park Rd, E 2 L 4 A 6 Saint John, New Brunswick, NB, Canada. gaspargonzalez2001@yahoo.es Author Flores-Ortega, Juan R. Escuela Nacional de Ingeniería Pesquera, Universidad Autónoma de Nayarit. Apartado postal No 10, Bahía de Matanchén km 12, 63740 San Blas, Nayarit, Mexico percebes5@gmail.com Author Kosonoy-Aceves, Daniel Departamento de Estudios para el Desarrollo Sustentable de la Zona Costera, Universidad de Guadalajara, Gómez Farías 82, 48980 San Patricio-Melaque, Jalisco, Mexico. dkosonoy@yahoo.com.mx Author Lucano-Ramírez, Gabriela Departamento de Estudios para el Desarrollo Sustentable de la Zona Costera, Universidad de Guadalajara, Gómez Farías 82, 48980 San Patricio-Melaque, Jalisco, Mexico. lucanog@costera.melaque.udg.mx Author Ruiz-Ramírez, Salvador Departamento de Estudios para el Desarrollo Sustentable de la Zona Costera, Universidad de Guadalajara, Gómez Farías 82, 48980 San Patricio-Melaque, Jalisco, Mexico. salruizram@hotmail.com Author Padilla-Gutierrez, Sandra C. Departamento de Estudios para el Desarrollo Sustentable de la Zona Costera, Universidad de Guadalajara, Gómez Farías 82, 48980 San Patricio-Melaque, Jalisco, Mexico. caro_satary-1992@hotmail.com Author Curry, R. Allen Canadian Rivers Institute, University of New Brunswick, E 3 B 5 A 3 Fredericton, New Brunswick, NB, Canada racurry@unb.ca text Neotropical Ichthyology 2017 2017-12-21 15 4 e 170056 e 170056 http://dx.doi.org/10.1590/1982-0224-20170056 journal article 10.1590/1982-0224-20170056 1982-0224 20088637

Tab. 1. Diet composition of three species of snappers in Barra de Navidad lagoon. W%: percentage weight; N%: percentage number; F%: percentage frequency; P%: percentage of prey-specific index of relative importance (PSIRI). NI=Not identified.

	Lutjanus argentiventris				Lutjanus colorado				Lutjanus novemfasciatus
	W%	N%	F%	P%	W%	N%	F%	P%	W%	N%	F%	P%
Decapoda				61.85				68.53				49.9
Alpheidae	8.58	4.19	7.18	6.39	4.25	13.54	15.11	8.90	1.13	1.05	2.46	1.09
Callianassidae									0.01	0.26	0.82	0.14
Gecarcinidae	0.02	0.12	0.51	0.07	0.62	0.79	2.88	0.71
Epialtidae	0.74	0.12	1.54	0.43
Grapsidae	0.37	0.12	1.03	0.25	6.22	5.17	10.79	5.70	0.35	0.79	1.64	0.57
Ocypodidae					1.39	1.33	2.16	1.36
Palaemonidae	0.29	1.23	3.08	0.76	0.47	3.98	5.76	2.23	11.82	8.92	11.47	10.37
Penaeidae	15.76	18.13	23.59	16.95	6.11	6.89	10.79	6.50	4.76	11.8	18.85	8.28
Pinnotheridae	0.17	0.25	1.03	0.21	0.04	0.27	2.16	0.16
Porcellanidae	4.04	2.22	4.1	3.13	0.26	1.59	6.47	0.93	0.13	0.53	3.28	0.33
Portunidae	13.05	14.8	20.51	13.93	22.59	20.82	23.02	21.71	3	13.52	12.29	8.26
Processidae	0.19	0.25	1.03	0.22	0.01	0.53	2.16	0.27
Sicyoniidae	0.04	0.12	0.51	0.08
Upogebiidae	6.33	2.1	5.64	4.22	9.58	8.41	13.67	9.00	9	4.2	7.38	6.60
Xanthidae	14.16	3.94	8.2	9.05	1.89	3.98	5.75	2.94	0.48	0.53	4.1	0.51
Decapoda NI	1.9	10.42	15.9	6.16	1.43	14.8	12.23	8.12	2.21	25.29	22.13	13.75
Stomatopoda
Squillidae	1.2	0.49	1.54	0.85	0.2	0.41	2.16	0.31
Mollusca				0.00				2.95				0.00
Solecurtidae					0.98	0.53	2.16	0.76
Bivalvia NI					0.32	0.27	1.44	0.30
Molluska NI					0.14	0.53	2.16	0.34
Other invertebrates	2.03	31.18	5.13	16.61	0.45	2.65	7.19	1.55	3.66	9.14	12.3	6.40
Fish				20.73				28.30				43.73
Ariidae									1.53	0.26	0.82	0.90
Centropomidae									0.81	0.79	2.46	0.80
Congridae	1.16	0.12	0.51	0.64					1.43	0.53	1.64	0.98
Eleotridae	0.71	1.14	3.08	0.93	10	3.36	5.75	6.68	0.68	0.14	2.46	0.41
Engraulidae									4.4	2.72	10.65	3.56
Gerreidae									3.32	0.79	2.46	2.06
Gobiidae	9.85	3.39	7.18	6.62					2.4	1.72	5.74	2.06
Lutjanidae	0.74	0.25	1.03	0.50
Paralichthyiidae	0.07	0.12	0.51	0.10	0.38	0.27	0.72	0.33
Fish NI	18.58	5.29	10.26	11.94	32.68	9.89	15.83	21.29	48.89	17.02	27.05	32.96