Assessing population-level morphometric variation of the Mountain Mullet Agonostomus monticola (Teleostei: Mugilidae) across its Middle American distribution Author Díaz-Murillo, Bertha P. FacultaddeCiencias Marinas, UniversidadAutónoma de BajaCalifornia, Ensenada, Baja California 22800, México diazp_2000@yahoo.com Author Ruiz-Campos, Gorgonio Facultad de Ciencias, Universidad Autónoma de Baja California, Ensenada 22800, México. US mailing address: PMB 064, P. O. Box 189003, Coronado CA 92178 - 9003. Phone: + (52) 646 121 0330 gruiz@uabc.edu.mx Author Piller, Kyle R. Southeastern Louisiana University, Department of Biological Sciences, Hammond, LA 70402, USA kyle.piller@selu.edu Author McMahan, Caleb D. The Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA cmcmahan@fieldmuseum.org Author García-De-León, Francisco J. Laboratorio de Genética para la Conservación. Centro de Investigaciones Biológicas del Noroeste. La Paz, Baja California Sur 23096, México fgarciadl@cibnor.mx Author Camarena-Rosales, Faustino FacultaddeCiencias Marinas, UniversidadAutónoma de BajaCalifornia, Ensenada, Baja California 22800, México camarena@uabc.edu.mx text Neotropical Ichthyology 2017 2017-12-21 15 4 e 170036 1 8 http://dx.doi.org/10.1590/1982-0224-20170036 journal article 10.1590/1982-0224-20170036 1982-0224 20083168

Tab. 3. Mahalanobis squared distances between Agonostomus monticola groups using: (a) linear measurements (Hubbs, Lagler, 1958; Bookstein, 1982) and (b) landmark-based method (Rohlf (2005)).

Linear measures
a)	Pacifico-B	Caribbean	Pacific-A	NE México
Pacifico-B	0
Caribbean	13.56	0
Pacific-A	10.72	13.07	0
NE México	15.95	8.24	9.25	0
Geometric morphometry
b)	Pacifico-B	Caribbean	Pacific-A	NE México
Pacifico-B	0
Caribbean	4.875	0
Pacific-A	5.108	4.272	0
NE México	5.886	4.233	3.835	0