Parasitic load of the Pacific mackerel, Scomber japonicus (Pisces: Scombridae) from Northwestern Baja California, Mexico

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Biological index of Pacific mackerel (Scomber japonicus) sampled during spring and summer_

Parameter	Spring (n=47)	Summer (n=57)	P Value
Mean weight (g)	117.42 ± 42.33	118.12 ± 63.16	0.487
Mean length (cm)	24.49 ± 2.06	22.75 ± 4.69	0.071
CF	0.769 ± 0.10	0.936 ± 0.289	<0.001

Prevalence (P%), Abundance (A), and Intensity (I) of the parasites found in the Pacific mackerel Scomber japonicus collected from Todos Santos” bay, Baja California, during Spring and Summer

	Spring (n=35)			Summer (n =60)
Parasite species	P %	A	I	P %	A	I
Monogenea
Kuhnia scombri*	4.9 ± 16.6	0.59 ± 1.75	2.8 ± 2.9	0.05 ± 0.41	0.01 ± 0.12	1 ± 0
Digenea
Didymozoidae**	4.21 ± 14.2	1.7 ± 6.21	10 ± 12.6	1.3 ± 3.13	0.33 ± 0.7	1.54 ± 0
Cestoda
Tetraphyllidea**	0.11 ± 0.81	0.02 ± 0.14	1 ± 0	---	---	---
Nematoda
Anisakis sp.**	90.1 ± 21.9	27.6 ± 29.9	28.1 ± 30	60.2 ± 48	8.25 ± 15	13.4 ± 16.5
Acanthocephala
Rhadinorhynchus sp.**	0.07 ± 0.52	0.02 ± 0.14	1 ± 0	1.66 ± 12.9	0.01 ± 0.1	1 ± 0
Copepoda
Caligus pelamydis*	0.62 ± 2.9	0.12 ± 0.53	2 ± 1	---	---	---

Parasite species of the Pacific mackerel (Scomber japonicus) during Spring and Summer from Todos Santos bay, Baja California, Mexico_

	Spring		Summer
Parasite species	PN	DH	PN	DH
Monogenea
Kuhnia scombri*	28	G	1	G
Digenea
Didymozoidae**	80	S, IC, I	0	---
Cestoda
Tetraphyllidea**	1	I	0	---
Nematoda
Anisakis sp.**	1297	M, S, IC, I, L, MU, GN	515	M, S, IC, I, L
Acanthocephala
Rhadinorhynchus sp.**	1	I	1	I
Copepoda
Caligus pelamydis*	6	G	0	---