Infective pentastomid larvae from Pygocentrus nattereri Kner (Pisces, Characidae) from the Miranda River, Pantanal, Mato Grosso do Sul State, Brazil, with notes on their taxonomy and epidemiology

A morphological and genetic description of pentastomid infective nymphs belonging to the family Sebekidae Sambon, 1922 in fish in Australian waters

“…Infective nymphs of the Sebekidae can be readily identified to genus, based mainly on the shape of the buccal cadre (see Giesen et al 2013): specimens of Alofia have a buccal cadre with a characteristic U-shape and 'tuning fork' posterior end, whereas nymphs of Sebekia possess a rounded buccal cadre. The use of hook measurements for species identification of nymphs is problematic.…”

“…Host specificity of pentastome nymphs in fish intermediate hosts appears to be low, with nymphs found in a variety of hosts within a single aquatic system (Almeida et al 2010, Giesen et al 2013). Indeed, four very different fish species were found to be intermediate hosts in this study.…”

“…Although commonly reported within fish hosts elsewhere (Junker et al 1998, Guidelli et al 2003, Almeida et al 2010, Giesen et al 2013, no larval pentastomids have previously been reported from fish in Australian waters.…”

“…Most larval sebekid pentastomes reported from fish mature in crocodiles (Junker et al 1998, Guidelli et al 2003, Almeida et al 2010, Giesen et al 2013, with a few species maturing in freshwater turtles (Curran et al 2014). Crocodiles in the Northern Territory, Australia, have been reported with at least five species belonging to three genera, all Sebekidae, from both wild and farmed populations (Riley et al 1985, 1990, Riley 1994, Riley and Hurchzermeyer 1996.…”

Registro de larvas de Sebekia sp. (Pentastomida: Sebekidae) en peces de la cuenca media del río Usumacinta, Tabasco, México

“…Se realizó una búsqueda bibliográfica sobre la clasificación taxonómica de la familia y del género Sebekidae para identificar la larva registrada en este estudio. Se realizó mediante la sistemática propuesta por Christoffersen y De Assis (2013); también se realizó la descripción morfológica de las mismas (Giesen, Takemoto, Calitz, Pérez Lizama, & Junker, 2013;Venard & Bangham, 1941). Para localizar las mismas los hospederos fueron eviscerados y fileteados con el objetivo de obtener piezas de musculatura de entre 5 y 8 cm de longitud, mismas que se colocaron en bolsas de polietileno de 20 x 30 cm, se etiquetaron con datos de colecta por hospedero para su posterior observación en menos de 24 h. Los filetes fueron comprimidos dentro de las bolsas de plástico con una prensa metálica.…”