Syphacia peromysci Harkema
Description
Syphacia peromysci Harkema
Site of infection: Caecum and large intestine
Host: Peromyscus yucatanicus
Locality: Paraíso
Prevalence and mean intensity (range): 20% (1/5) and 465 (465)
Specimens deposited: MLP-He 7436 and CNHE 10709
Comments: The specimens examined from Yucatán had traits described by Kruidenier et al. (1961), Quentin & Kinsella (1972), and Falcón-Ordaz et al. (2016), i.e. cephalic plate rounded (males) or elongated (females); amphids located medial to the ventral submedian papillae; lateral alae present; males with three mamelons, spicule 62–71 long, gubernaculum 31–33 long, accessory hook with ornamentation, three pairs of caudal papillae surrounding the cloacal region, and tail 67–79 long; and females with no prominent vulva and tail 276–321 long. All females were non-gravid.
In México, S. peromysci has been recorded from P. maniculatus in Hidalgo (Pulido-Flores et al. 2005) and P. difficilis in Veracruz (Falcón-Ordaz et al. 2016). This is the first record of S. peromysci from P. yucatanicus and for Yucatán.
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References
- Falcon-Ordaz, J., Fernandez, J. A. & Ruiz-Vazquez, B. A. (2016) Distribution extension of Syphacia (Seuratoxyuris) peromysci Harkema, 1936 (Nematoda, Syphaciinae) parasitizing the rock mouse, Peromyscus difficilis (J. A. Allen, 1891) (Rodentia, Neotominae) in central Mexico. Check List, 12, 1 - 13.