A New Species of Hysterothylacium (Nematoda: Anisakidae) Parasite of Ariopsis Guatemalensis (Osteichthyes: Ariidae) From Tres Palos Lagoon, Mexico

Abstract

Hysterothylacium perezi n. sp. is described from the intestine of the "cuatete" Ariopsis guatemalensis Günther, 1864 (Osteichthyes: Ariidae), in Tres Palos, a coastal lagoon located in the Mexican Pacific basin. The new species differs from all other species of Hysterothylacium Ward and Magath, 1917, in possessing a spinous postcloacal pad. In addition, H. perezi is readily distinguished from the 21 species described in fishes from America and Hawaii by having the greatest number of caudal papillae (47 to 51 pairs + 1 single, precloacal papillae). This species is the third described from hosts inhabiting estuarine environments in America and the fourth reported in Mexico.

Guide to the Parasites of Fishes of Canada Part V: Nematoda

“…Parasites of marine, estuarine and fresh-water fishes. Comments: Gopar-Merino et al (2005) claimed that 61 species of Hysterothylacium have been recognized; however, there are more than 61species if "morphospecies", "sibling species" and "cryptic species" are taken into account. According to Rye & Baker (1992) most Hysterothylacium species occur in the alimentary tract of marine fishes rather than fresh-water ones.…”

A checklist of metazoan parasites of fish from Tres Palos Lagoon, Guerrero, Mexico

“…Its high productivity and the wide variety of fish species from different origin (i.e., freshwater, brackish water, and marine water) make the lagoon an ideal habitat to support a rich local parasite fauna. However, published research on the parasite fauna in the fish species of Tres Palos Lagoon is still limited, consisting of studies of two nematode species (García-Prieto et al 2003;Gopar-Merino et al 2005), the parasite community of one fish species (Garrido-Olvera et al 2004), and more recently some monogeneans species of one centropomid fish (Mendoza-Franco et al 2006). Therefore, the aim of the present study was to generate a first inventory of the parasite fauna from fish of different origins in Tres Palos Lagoon to contribute in the development of future research on metazoan parasites from fish in the coastal lagoons of the state of Guerrero, Mexico.…”

Genetic and morphological characterisation of a new species of the genus Hysterothylacium (Nematoda) from Paralichthys isosceles Jordan, 1890 (Pisces: Teleostei) of the Neotropical Region, state of Rio de Janeiro, Brazil

“…107(2): 186-193, March 2012 The study of larval anisakids infecting fishes raises many doubts related to their taxonomic identification and, thus, promotes the proposal of different nomenclatures, thereby increasing difficulties in obtaining their proper specific diagnosis. More than 60 species of the genera Hysterothylacium (Raphidascarididae Hartwich, 1954, sensu Fagerholm, 1991, which parasitize estuarial, freshwater and marine fishes, have been described around the world (Gopar-Merino et al 2005). However, Hysterothylacium larvae suffered from indefinite taxonomy and are frequently mistaken with the Contracaecum genus (Lopes et al 2011).…”