02317nas a2200241   4500008004100000022001400041245018600055210006900241260001300310300001000323490000800333520153400341653001901875653001201894653001801906653001101924653002601935653001501961653001201976100001801988700001902006856005002025       2011                        eng d  a1432-195500aOn four species of echinorhynchid acanthocephalans from marine fish in Halong Bay, Vietnam, including the description of three new species and a key to the species of Gorgorhynchus.0 afour species of echinorhynchid acanthocephalans from marine fish  c2011 Sep  a841-70 v1093 a<p>Four species of echinorhynchid acanthocephalans were collected from marine fish off Cat Ba Island, Halong Bay, Gulf of Tonkin, Vietnam, in the spring of 2009. Acanthocephalus halongensis n. sp. (Echinorhynchidae) from the redtail scad, Decapterus kurroides Bleeker 1855 (Carangidae), has a unique proboscis armature with a spiniform basal hook with lateral root and an incomplete receptacle wall posteriorly. Gorgorhynchus tonkinensis n. sp. (Rhadinorhynchidae) also from D. kurroides, has long, slender, winding lemnisci, many epidermal nuclei, and a narrow anterior trunk with a shoulder armed with 20 circles of tightly packed spines, the posterior four circles of which have abruptly larger spines than those in the anterior circles. Neorhadinorhynchus atypicalis n. sp. (Cavisomidae) from the rabbitfish, Siganus fuscescens (Houttuyn 1782) (Siganidae), has the largest number of proboscis hooks per row, testes wider than long, and four clustered cement glands. Micracanthorhynchica kuwaitensis Amin and Sey 1996 (Rhadinorhynchidae) from the spottail needlefish Strongylura strongylura (van Hasselt 1823) (Belonidae) was similar to specimens originally described from the Arabian Gulf off the Kuwaiti coast. These acanthocephalans were collected in small numbers but stood out as uniquely and considerably different from their closest relatives to warrant their reporting. All species of acanthocephalans and their host and geographic distribution are described, and a key to the species of Gorgorhynchus is provided.</p>10aAcanthocephala10aAnimals10aFish Diseases10aFishes10aHelminthiasis, Animal10aMicroscopy10aVietnam1 aAmin, Omar, M1 aVan Ha, Nguyen  uhttps://acanthocephala.myspecies.info/node/2701815nas a2200253   4500008004100000022001400041245007600055210006900131260001300200300001200213490000700225520112500232653001901357653001201376653001801388653001001406653001101416653002601427653000901453653001201462100001801474700001901492856005001511       2008                        eng d  a0022-339500aOn a new acanthocephalan family and a new order, from birds in Vietnam.0 anew acanthocephalan family and a new order from birds in Vietnam  c2008 Dec  a1305-100 v943 a<p>During November 2000, a collection of acanthocephalans from birds in Quang Ninh Province, Vietnam, included a new genus and species in a new family and order. Pyrirhynchus heterospinus n. gen., n. sp. (Pyrirhynchidae n. fam.: Heteramorphida: new order) is described from Actitis hypoleucos (Linnaeus, 1758) (common sandpiper). The new family combines characters from Polymorphidae and Heteracanthocephalidae, and it includes new features. Specimens of the new species are distinguished from those of Heteracanthocephalidae and/or Polymorphidae by their long cylindrical trunk with anterior swelling, pyriform proboscis with hooks much larger ventrally, brain at the anterior end of the receptacle, specialized tubular cement glands, and elliptoid eggs with concentric shells. A detailed analysis of proboscis and trunk armature is included, and specimens of several species of Arhythmorhynchus Lühe, 1911 (Polymorphidae) were studied for comparative purposes. The proboscis of P. heterospinus is armed with 17 to 20 rows of 17 to 19 hooks each, with anterior 9-11 hooks rooted and posterior 6-10 spines rootless.</p>10aAcanthocephala10aAnimals10aBird Diseases10aBirds10aFemale10aHelminthiasis, Animal10aMale10aVietnam1 aAmin, Omar, M1 aVan Ha, Nguyen  uhttps://acanthocephala.myspecies.info/node/32