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Volume 31, Number 6—June 2025

Research Letter

Baylisascaris procyonis Roundworm in Common Raccoon (Procyon lotor), Mexico

Ana Luisa Gómez-Sánchez, Carlos Daniel Pinacho-Pinacho, Juan José Barrios-Gutierrez, Ismael Guzmán-Valdivieso, Alberto Gonzalez-Romero, Tania Fonseca-Leal, and Andrés M. López-PérezComments to Author 
Author affiliation: Instituto de Ecología-INECOL A.C., Xalapa, Mexico

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Figure 1

Scanning electron micrographs of female Baylisascaris procyonis roundworm detected in common raccoon (Procyon lotor), Mexico. A) Anterior end of worm body. Arrow indicates the excretory pore. Scale bar indicates 400 μm. B) Cephalic end, apical view of worm. Lowercase letters indicate dorsal (d) and ventral (v) lips, each having 1 large double papillae instead of a dorsal lip with 2 large double papillae, as reported previously (4). Small and large arrows indicate the double papillae. Scale bar indicates 100 μm. C) Cephalic end of worm. Small and large arrows indicate the double papillae. Scale bar indicates 100 μm. D) Magnified image of labial denticles. Scale bar indicates 5 μm. E) Magnified image of the excretory pore. Scale bar indicates 10 μm. F) Posterior end of the worm body. Scale bar indicates 300 μm. G) Magnified image of the tail tip. Scale bar indicates 10 μm.

Figure 1. Scanning electron micrographs of female Baylisascaris procyonis roundworm detected in common raccoon (Procyon lotor), Mexico. A) Anterior end of worm body. Arrow indicates the excretory pore. Scale bar indicates 400 μm. B) Cephalic end, apical view of worm. Lowercase letters indicate dorsal (d) and ventral (v) lips, each having 1 large double papillae instead of a dorsal lip with 2 large double papillae, as reported previously (4). Small and large arrows indicate the double papillae. Scale bar indicates 100 μm. C) Cephalic end of worm. Small and large arrows indicate the double papillae. Scale bar indicates 100 μm. D) Magnified image of labial denticles. Scale bar indicates 5 μm. E) Magnified image of the excretory pore. Scale bar indicates 10 μm. F) Posterior end of the worm body. Scale bar indicates 300 μm. G) Magnified image of the tail tip. Scale bar indicates 10 μm.

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References
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