Eutetrarhynchid trypanorhynchs (Cestoda) from elasmobranchs off Argentina, including the description of Dollfusiella taminii sp. n. and Parachristianella damiani sp. n., and amended description of Dollfusiella vooremi (São Clemente et Gomes, 1989)

Abstract

Eutetrarhynchid tapeworms currently comprise more than 90 marine species and 2 species reported from rivers in South America (Palm 2004, Campbell and Beveridge 2006, Schaeffner and Beveridge 2012, 2013a,b,c, Haseli 2013, Schaeffner 2014. Among the 17 genera considered valid in the family, Dollfusiella Campbell et , Prochristianella Dollfus, 1946, and Parachristianella Dollfus, 1946 are the most species-rich with 27, 20 and 9 species, respectively. Although the eutetrarhynchids are well represented in a diverse array of hosts worldwide, only a few records exist from the southwestern Atlantic, all belonging to species of Dollfusiella. Dollfusiella vooremi (São Clemente et Gomes, 1989) 1989a, Tanzola et al. 1998, Alarcos et al. 2006. Also a plerocercus of an unidentified species of Dollfusiella was reported from the teleost Micropogonias furnieri (Desmarest) in Brazil (Pereira and Boeger 2005).During a parasitological survey of teleosts and elasmobranchs in the Argentine Sea, 3 species of eutetrarhynchids were collected from batoids (Myliobatis goodei Garman and Psammobatis bergi Marini) and sharks (Mu. schmitti).

New species of Aberrapex Jensen, 2001 (Cestoda: Lecanicephalidea) from eagle rays of the genus Myliobatis Cuvier (Myliobatiformes: Myliobatidae) from off Argentina

“…A similar pattern was found in trypanorhynchs from M. goodei Ivanov 2014, 2015). Specimens of M. goodei from the San Matías Gulf (Magellanic Province) were parasitised by Parachristianella damiani Menoret et Ivanov, 2014, while those from off Necochea (Warm Temperate South-western Atlantic Province) hosted Mecistobothrium oblongum Menoret et Ivanov, 2015. Despite the wide distribution of M. goodei along the western coast of the Atlantic Ocean, from South Carolina, USA (36°N) to Santa Cruz, Argentina (46°S) (Cousseau et al 2007), the specimens show locally distinctive cestode faunas, which are correlated with well-defined biogeographic regions. Moreover, the geographic area where specimens of M. goodei were parasitised by A. sanmartini and M. oblongum has been identified as a mating and nursery area for M. goodei (see Molina and López Cazorla 2015), where juveniles live for a year and adults spend the spring and summer every year.…”

“…The geographic distribution of M. goodei and M. freminvillei includes the coastal regions of the western Atlantic Ocean (essentially from North America to Argentina), whereas that of M. ridens is restricted to coastal regions off Brazil and Argentina (Cousseau et al 2007). Only M. goodei has been previously reported as a host for tapeworms in the south-western Atlantic, being parasitised by at least seven species of cestodes of the orders Diphyllidea, Trypanorhyncha, Phyllobothriidea, Tetraphyllidea and Lecanicephalidea (see Brooks et al 1981, Ivanov and Campbell 1998, Menoret and Ivanov 2014. Records of cestodes from M. freminvillei are restricted to a single species of Tetraphyllidea from the north-western Atlantic (Linton 1890).…”

Trypanorhynch cestodes (Eutetrarhynchidae) from batoids along the coast of Argentina, including the description of new species in Dollfusiella Campbell et Beveridge, 1994 and Mecistobothrium Heinz et Dailey, 1974

“…In the southwestern Atlantic only three species of eutetrarhynchids have been reported so far, i.e. Dollfusiella taminii Menoret et Ivanov, 2014, Dollfusiella vooremi (São Clemente et Gomes, 1989, and Parachristianella damiani Menoret et Ivanov, 2014(see Alarcos et al 2006, Menoret and Ivanov 2014. All of them seem to be quite specific for their definitive host, being found in the arhynchobatid skate Psammobatis bergi Marini, in the carcharhiniform shark Mustelus schmitti Springer and the myliobatiform eagle ray Myliobatis goodei Garman, respectively.…”

“…Dollfusiella is the most speciose genus in the family, with 28 valid species (Schaeffner and Beveridge 2013b, Menoret and Ivanov 2014, Schaeffner 2014. The genus is widely distributed, with most species reported in the Indopacific (Palm 2004, Schaeffner and Beveridge 2013b, Menoret and Ivanov 2014.…”

Diversidade, taxonomia e especificidade de solitárias (Platyhelminthes: Cestoda) parasitas de papa-formigas (Aves: Passeriformes: Thamnophilidae) no sul da Amazônia brasileira

“…tornou-se frequente nas descrições e revisões taxonômicas para o grupo (e.g. SCHOLZ; DRÁBEK;HANZELOVÁ, 1998;CAIRA;CARPENTER, 2006;MENORET;IVANOV, 2014;OROS et al, 2016), principalmente devido ao desenvolvimento da tecnologia dos microscópios que permitiram que espécimes diminutos também fossem analisados. Para táxons como Lecanicephalidea, Rhinebothriidea, Trypanorhyncha e os grupos dentro de Tetraphyllidea, adisponibilidade de dados acerca de microtríquias é vasta, com diversos morfotipos destas estruturas registrados para estes parasitas (e. g. PALM, 2004; JENSEN, 2005; MALEK; CAIRA; HASELI, 2010; RUHNKE; CAIRA; COX, 2015).…”