title: Description of advanced third-stage larvae of Gnathostoma lamothei Bertoni-Ruiz et al. 2005 (Nematoda: Gnathostomatidae) from experimental hosts and contributions to its life cycle.
abstract: The advanced third-stage larvae (AdvL(3)) of Gnathostoma lamothei was obtained from experimental hosts. Frogs Lithobates heckscheri and snakes Nerodia fasciata pictiventris were compatible hosts allowing optimal larval development. AdvL(3) are 4,487.94 μm long, have two lateral cervical papillae between rows 10 and 16 and an excretory pore at row 23. The average counts of the cephalic bulb hooklets from the four rows are 39.3, 43.3, 44.2, and 47.3. Larvae show an esophagus that represents 40 % of the body width. These findings indicate that amphibians and reptiles could be involved as G. lamothei natural hosts; nevertheless, their role as etiological agents of human gnathostomiasis is uncertain. This paper reports for the first time the taxonomic description of G. lamothei AdvL(3) obtained from experimental hosts and contributes to the understanding of its life cycle.
authors.affiliation: Laboratorio de Sanidad Acuícola y Parasitología Molecular, Departamento El Hombre y su Ambiente, Universidad Autónoma Metropolitana-Xochimilco, Calzada del Hueso No. 1100, Col. Villa Quietud, Delegación Coyoacán, 04960, México, DF, México. gn_jorge@hotmail.com
authors.forename: Jorge
authors.initials: J
authors.lastname: Gaspar-Navarro
authors.forename: Roberto Javier
authors.initials: RJ
authors.lastname: Almeyda-Artigas
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Sánchez-Miranda
authors.forename: Laura
authors.initials: L
authors.lastname: Carranza-Calderón
authors.forename: Miguel Angel
authors.initials: MA
authors.lastname: Mosqueda-Cabrera
mesh_terms: D000825:Animal Structures / Q000648:ultrastructure; D000818:Animals; D017812:Colubridae / Q000469:parasitology*; D005260:Female; D006039:Gnathostoma / Q000502:physiology* / Q000648:ultrastructure*; D007814:Larva / Q000502:physiology / Q000648:ultrastructure; D008018:Life Cycle Stages; D008297:Male; D011898:Ranidae / Q000469:parasitology*