The molecular profile of Paratrajectura longcementglandatus Amin, Heckmann et Ali, 2018 (Acanthocephala: Transvenidae) from percid fishes in the marine waters of Iran and Iraq

Abstract

SummaryParatrajectura longcementglandatus Amin, Heckmann et Ali, 2018 (Transvenidae) was recently described from two species of percid fishes collected from the marine territorial waters of Iraq and Iran in the Persian Gulf. The genus Paratrajectura Amin, Heckmann et Ali, 2018 is a close relative to transvenid genera TrajecturaPichelin et Crib, 2001 and TransvenaPichelin et Crib, 2001. Morphologically, Paratrajectura is characterised by having apical proboscis cone, long, tubular cement glands, short lemnisci, prominent roots on all proboscis hooks, subterminal female gonopore, and males with long pre-equatorial testes. Molecular studies of P. longcementglandatus using 18S rDNA and cox1 genes compared with available data of members of other families of Echinorhynchida showed that P. longcementglandatus is grouped with species of the genus Transvena forming a clade within the family Transvenidae.

Integrative taxonomy of Serrasentis gibsoni n. sp. (Acanthocephala: Isthmosacanthidae) from flatfishes in the Gulf of Mexico

“…within the Isthmosacanthidae, and it is related to S. nadakali , as shown in both phylogenetic analyses (IB and ML) but without nodal support (Figure 6, online supplementary and ). The phylogenetic relationships obtained from the barcoding dataset for taxa of Isthmosacanthidae were similar to those found in previous phylogenetic analyses carried out for similar taxa using the same gene (e.g., Braicovich et al 2014; Barton et al 2018; Lisitsyna et al 2019a; Huston et al 2020a; Sharifdini et al 2020; Huston & Smales 2021).…”

“…Based on our phylogenetical analyses, G. lepidus is sister to S. sagittifer, but only the ML analyses recovered this relationship with high nodal support. Rhadinorhynchidea was recovered as a paraphyletic assemblage (García-Varela & Nadler 2005; Verweyen et al 2011; Gregori et al 2013; Abdel-Ghaffard et al 2014; Braicovich et al 2014; Barton et al 2018; Lisitsyna et al 2019a; Steinauer et al 2019; Huston et al 2020a; Sharifdini et al 2020). Pichelin & Cribb (2001) mentioned that the number of cement glands is a distinguishing character for the recognition of acanthocephalan families, especially for the Rhadinorhynchidae.…”

“…Amin (2013) accepted the validity of the Isthmosacanthidae but rejected inclusion of Gorgorhynchoides and Golvanorhynchus, on the basis that the characteristics used by Smales (2012) to unite Golvanorhynchus, Gorgorhynchoides, and Isthmosacanthus, namely six cement glands, a similar proboscis shape, a trunk swelling and trunk spines, were also shared by many other rhadinorhynchids. However, only Serrasentis and Gorgorhynchoides have been tested based on molecular phylogenetical analyses (e.g., Verweyen et al 2011;Gregori et al 2013;Abdel-Ghaffard et al 2014;Braicovich et al 2014;Barton et al 2018;Lisitsyna et al 2019a;Steinauer et al 2019;Huston et al 2020a;Sharifdini et al 2020;Huston & Smales, 2021;present study). Gorgorhynchoides spp.…”

“…To infer the position and determine sister-group relations of both taxa within a phylogenetic framework of Acanthocephala, the barcoding sequence data generated herein were aligned together with published sequences from GenBank. The sequences included representatives of different families of the order Echinorhynchida and Polymorphida, following the dataset and classification of Verweyen et al (2011), Gregori et al (2013), Barton et al (2018), Amin et al 2019, Lisitsyna et al (2019a), Huston et al (2020a, b), Sharifdini et al (2020), and Huston and Smales (2021) (see Online supplementary for more details). Adineta gracilis Janson, 1893 and Rotaria rotatoria (Pallas, 1766) were used as outgroups for the phylogenetic analyses in this study, based on their previously established close phylogenetic relationship with Acanthocephala (e.g., Garey et al 1996; García-Varela et al 2000; Huston et al 2020).…”

Redescription and molecular analysis ofPallisentis(Pallisentis)nandaiSarkar, 1953 (Acanthocephala: Quadrigyridae) in India

“…Molecular methods are an important tool for morphological identification, diversity and taxonomic relationships among acanthocephalan species (García-Varela et al ., 2017, 2019; Li et al ., 2018; Amin et al ., 2019a, b, c; Lisitsyna et al ., 2019; Menasria et al ., 2019; Sharifdini et al ., 2020). The phylogenetic relationships and systematic position of Pallisentis are poorly explored compared to other genera.…”