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Volume 30, Number 9—September 2024
Research Letter

Thelazia callipaeda Eyeworms in American Black Bear, Pennsylvania, USA, 2023

Caroline SobotykComments to Author , Jaclyn Dietrich, Guilherme G. Verocai, Lauren Maxwell, and Kevin Niedringhaus
Author affiliations: University of Pennsylvania School of Veterinary Medicine, Philadelphia, Pennsylvania, USA (C. Sobotyk, J. Dietrich, L. Maxwell, K. Niedringhaus); Texas A&M University College of Veterinary Medicine and Biomedical Sciences, College Station, Texas, USA (Guilherme G. Verocai)

Main Article

Figure 1

Morphologic features of adult female Thelazia callipaeda eyeworm isolated from an American black bear in Coolbaugh Township, Monroe County, Pennsylvania, USA, 2023. A) Anterior end showing the large, deep, cup‐shaped buccal cavity. Scale bar indicates 50 μm. B) Midbody region showing the thin transverse cuticular striations pattern and numerous coiled first-stage larvae. Scale bar indicates 100 μm. C) Anterior end showing the location of the vulvar opening anterior to the esophageal-intestinal junction. Dashed black arrow indicates esophageal-intestinal junction; solid black arrow indicates the vulval opening. Scale bar indicates 100 μm.

Figure 1. Morphologic features of adult female Thelazia callipaeda eyeworm isolated from an American black bear in Coolbaugh Township, Monroe County, Pennsylvania, USA, 2023. A) Anterior end showing the large, deep, cup‐shaped buccal cavity. Scale bar indicates 50 μm. B) Midbody region showing the thin transverse cuticular striations pattern and numerous coiled first-stage larvae. Scale bar indicates 100 μm. C) Anterior end showing the location of the vulvar opening anterior to the esophageal-intestinal junction. Dashed black arrow indicates esophageal-intestinal junction; solid black arrow indicates the vulval opening. Scale bar indicates 100 μm.

Main Article

Page created: July 30, 2024
Page updated: August 21, 2024
Page reviewed: August 21, 2024
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