Parapedocotyle prolatili gen. n. et sp. n., a representative of a new subfamily of the Diclidophoridae (Monogenea), a gill parasite of Prolatilus jugularis (Teleostei: Pinguipedidae) from Chile

Abstract

Parapedocotylinae, a new subfamily, is proposed to accommodate the gen. n. et sp. n. Parapedocotyle prolatili (Monogenea: Diclidophoridae), a gill parasite of the Pacific sandperch, Prolatilus jugularis (Valenciennes) (Pinguipedidae) from northern Chile (30°56'S; 71°20'W). Among the Diclidophoridae Cerfontaine, 1895, the species of the Pedocotylinae Yamaguti, 1963 are unique by bearing the first pair of clamps (most posteriorly) in a haptoral projection. Pedocotyle MacCallum, 1913, the only genus in the Pedocotylinae, is characterised by the first pair of clamps non-pedunculate, modified and non-functional, without accessory suckers, and clamps of pairs 2-4 being pedunculate and functional. In contrast, the first pair of clamps in Parapedocotyle is well developed and functional at the terminal end of a long haptoral appendix and having clamp pairs 2-4 pedunculated, modified and apparently not functional. Seminal receptacle is preovarian in Parapedocotyle in opposition to its postovarian position in Pedocotyle. These differences justified the erection of the new subfamily Parapedocotylinae. The new subfamily is also supported by genetic analyses (18S rDNA, 28S rDNA and cox1 sequences) demonstrating that the Pedocotylinae and Parapedocotylinae belong to different clades in the Diclidophoridae.

Helminth parasites of South American fishes: current status and characterization as a model for studies of biodiversity

“…The research group from the UA, Chile, has dealt with different subjects concerning helminths parasitic in fish, including ecological (Oliva et al ., 2016) and taxonomic studies (molecular and morphological characterization) of some taxa (Oliva et al ., 2014, 2015).…”

Triple barcoding for a hyperparasite, its parasitic host, and the host itself: a study of Cyclocotyla bellones (Monogenea) on Ceratothoa parallela (Isopoda) on Boops boops (Teleostei)

“…chrysophryi Pagellus acarne (Sparidae) Mediterranean Sea (Algeria) MZ127216 * Present study Choricotyle cf. chrysophryi Pagellus acarne (Sparidae) Mediterranean Sea (Algeria) MZ127222 * Present study Choricotyle anisotremi Anisotremus scapularis (Haemulidae) Pacific Ocean (Chile) KJ794206 [ 60 ] Choricotyle anisotremi Anisotremus scapularis Pacific Ocean (Chile) KJ794207 [ 60 ] Neoheterobothrium affine Paralichthys dentatus (Paralichthyidae) Atlantic Ocean (USA) AB478782 [ 75 ] Neoheterobothrium hirame Paralichthys olivaceus (Paralichthyidae) Pacific Ocean (Japan) AB162615 [ 75 ] Parapedocotyle prolatili Prolatilus jugularis (Pinguipedidae) Pacific Ocean (Chile) KJ7942...…”

“…Internal transcribed spacer (ITS) sequences are known for five species [75,82]. 18S and 28S RNA ribosomal sequences are available for 18 species across 11 genera [4,38,49,50,52,56,[59][60][61]71]. COI sequences are the least numerous, known for only 10 species across 6 genera [38,60,82].…”

Molecular characterisation of the Monogenea parasites of blue mackerel Scomber australasicus (Perciformes: Scombridae) in Australian waters

“…The molecular method has been extensively used for the accurate identification of many parasite species ( McManus and Bowles, 1996 ). The molecular characterisation may also lead to the discovery of new or cryptic species ( Ayadi et al, 2017 ; Bouguerche et al, 2019a ; Oliva et al, 2014 ). For example, the cox 1 gene has been used to differentiate among species of Monogenea ( Catalano et al, 2010 ; Jovelin and Justine, 2001 ; Oliva et al, 2014 ).…”

“…The molecular characterisation may also lead to the discovery of new or cryptic species ( Ayadi et al, 2017 ; Bouguerche et al, 2019a ; Oliva et al, 2014 ). For example, the cox 1 gene has been used to differentiate among species of Monogenea ( Catalano et al, 2010 ; Jovelin and Justine, 2001 ; Oliva et al, 2014 ). In previous studies, the characterisation of many Monogenea species was based on small sample numbers and amplification of a highly conserved region of the nuclear gene (28S rRNA, for example), which results in a lower degree of apparent genetic diversity.…”