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Pseudopecoelus mccauleyi n. sp. and Podocotyle sp. (Digenea: Opecoelidae) from the deep waters off Oregon and British Columbia with an updated key to the species of Pseudopecoelus von Wicklen, 1946 and checklist of parasites from Lycodes cortezianus (Perciformes: Zoarcidae)

  • Charles K. Blend EMAIL logo , Norman O. Dronen , Gabor R. Racz and Scott L. Gardner
Published/Copyright: April 18, 2017
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Acta Parasitologica
From the journal Acta Parasitologica Volume 62 Issue 2

Abstract

Pseudopecoelus mccauleyi n. sp. (Opecoelidae: Opecoelinae) is described from the intestine of the bigfin eelpout, Lycodes cortezianus (Gilbert, 1890) (Perciformes: Zoarcidae), collected at 200–800 m depths in the Northeastern Pacific Ocean off Oregon and Vancouver Island, British Columbia. The new species is distinguished by possessing a unique combination of the following diagnostic characters: vitelline fields that extend to the posterior margin of the ventral sucker; a slender, tubular and sinuous seminal vesicle that extends some distance into the hindbody; an unspecialized, protuberant ventral sucker; a genital pore at pharynx level; lobed to deeply multilobed testes; a lobed ovary; and an egg size of 68–80 μm × 30–46 μm. A single specimen of Podocotyle Dujardin, 1845 (Digenea: Plagioporinae) is also described from the intestine of an individual Coryphaenoides sp. (Gadiformes: Macrouridae) collected at 2,800 m depth off Oregon. A listing of parasites from the bigfin eelpout as well as observations of parasite diversity within relevant hosts are offered, new host and locality records are noted, and a brief discussion of Pseudopecoelusvon Wicklen, 1946 in the deep sea is presented taking note of the low level of host specificity recorded (i.e. spp. of Pseudopecoelus are now known to parasitize deep-water fish from at least 20 piscine families). A new dichotomous key to the 39 recognized species of Pseudopecoelus is introduced.

Keywords: British Columbia; Coryphaenoides sp.; Digenea; Key; Lycodes cortezianus; Macrouridae; Opecoelidae; Opecoelinae; Oregon; Plagioporinae; Podocotyle sp.; Pseudopecoelus mccauleyi n. sp.; Vancouver Island; Zoarcidae

Acknowledgements

We are grateful to the two anonymous reviewers; their comments were found to be quite helpful. We also acknowledge the foresight of the late Dr. James E. McCauley, Dept. of Oceanography, Oregon State Univ., Corvallis, Oregon, USA, for collecting and depositing this material. We thank Drs. Rodney Bray, David I. Gibson and Mrs. Eileen Harris, Parasitic Worms Group, BMNH, for the loan of paratypes of the new species that had been housed in the BMNH; these were deposited by Dr. Hisao P. Arai (Dept. of Biology, Univ. of Calgary, Alberta, Canada). We are grateful to Drs. Anna Phillips and Chad Walter, Dept. of Invertebrate Zoology, Smithsonian Museum of Natural History, for the loan of the holotype of P. nossamani, and we also thank the HWML for supporting this work. Dr. Mark Pokras, Wildlife Clinic, Cummings School of Veterinary Medicine, and the Tisch Library, Tufts University, North Grafton and Medford, Massachusetts, kindly continues to allow CKB access to and continued use of the on-line literature databases at Tufts. We acknowledge the efforts of the Interlibrary Loan Division of the Evans Library, Texas A&M University, College Station, Texas, for helping NOD obtain needed literature. Continued thanks go to Gordon College, Wenham, Massachusetts, for the extended loan of microscopes and other equipment to CKB. This study was completed and funded as part of a sabbatical approved for CKB by the Faculty Development Committee, Gordon College, and through an NSF grant (# DBI-0646356) awarded to SLG.

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Received: 2016-11-10
Revised: 2017-1-26
Accepted: 2017-2-9
Published Online: 2017-4-18
Published in Print: 2017-6-1

© 2017 W. Stefański Institute of Parasitology, PAS

Articles in the same Issue

  1. Review
  2. Pseudopecoelus mccauleyi n. sp. and Podocotyle sp. (Digenea: Opecoelidae) from the deep waters off Oregon and British Columbia with an updated key to the species of Pseudopecoelus von Wicklen, 1946 and checklist of parasites from Lycodes cortezianus (Perciformes: Zoarcidae)
  4. New record of Steinernema arenarium (Artyukhovsky) (Rhabditida: Steinernematidae) from Ukraine and a note on its distribution
  6. Isolation and molecular characterization of a Naegleria strain from a recreational water fountain in Tenerife, Canary Islands, Spain
  8. PCR denaturing gradient gel electrophoresis as a useful method to identify of intestinal bacteria flora in Haemaphysalis flava ticks
  10. Three new species of Pharygodonidae (Nematoda: Oxyuridea) in Laudakia tuberculata (Squamata: Agamidae) from Dehradun, Uttarakhand, India
  12. Amoebicidal activity of α-bisabolol, the main sesquiterpene in chamomile (Matricaria recutita L.) essential oil against the trophozoite stage of Acanthamoeba castellani Neff
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  24. How does host ecology influence sampling effort in parasite diversity estimates? A case study using Neotropical freshwater fishes
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https://doi.org/10.1515/ap-2017-0031
Keywords for this article
British Columbia; Coryphaenoides sp.; Digenea; Key; Lycodes cortezianus; Macrouridae; Opecoelidae; Opecoelinae; Oregon; Plagioporinae; Podocotyle sp.; Pseudopecoelus mccauleyi n. sp.; Vancouver Island; Zoarcidae

Articles in the same Issue

  1. Review
  2. Pseudopecoelus mccauleyi n. sp. and Podocotyle sp. (Digenea: Opecoelidae) from the deep waters off Oregon and British Columbia with an updated key to the species of Pseudopecoelus von Wicklen, 1946 and checklist of parasites from Lycodes cortezianus (Perciformes: Zoarcidae)
  4. New record of Steinernema arenarium (Artyukhovsky) (Rhabditida: Steinernematidae) from Ukraine and a note on its distribution
  6. Isolation and molecular characterization of a Naegleria strain from a recreational water fountain in Tenerife, Canary Islands, Spain
  8. PCR denaturing gradient gel electrophoresis as a useful method to identify of intestinal bacteria flora in Haemaphysalis flava ticks
  10. Three new species of Pharygodonidae (Nematoda: Oxyuridea) in Laudakia tuberculata (Squamata: Agamidae) from Dehradun, Uttarakhand, India
  12. Amoebicidal activity of α-bisabolol, the main sesquiterpene in chamomile (Matricaria recutita L.) essential oil against the trophozoite stage of Acanthamoeba castellani Neff
  14. A new species of Oochoristica (Cyclophyllidea: Linstowiidae) from non-native Mediterranean geckos, Hemidactylus turcicus (Sauria: Gekkonidae), from Texas, USA
  16. The ruby-crowned tanager Tachyphonus coronatus Vieillot, 1822 (Passeriformes: Thraupidae) as a new host for Isospora ramphoceli Berto, Flausino, Luz, Ferreira, Lopes, 2010 in Brazil
  18. Ecological implications of floods on the parasite communities of two freshwater catfishes in a Neotropical floodplain
  20. Morphological re-description of Electrotaenia malapteruri (Cestoda: Proteocephalidae) and Dujardinnascarismalapteruri (Nematoda: Heterocheilidae) infecting the Electric catfish Malapterurus electricus and heavy metal accumulation in host and parasites in relation to water and sediment analysis in Lake Manzala, North Delta, Egypt
  22. Disruption of egg production by triclabendazole-resistant Fasciola hepatica following treatment with a commercial preparation of myrrh (Mirazid)
  24. How does host ecology influence sampling effort in parasite diversity estimates? A case study using Neotropical freshwater fishes
  26. cDNA library construction of two human Demodexspecies
  28. Helminth (Cestoda, Nematoda) and coccidian (Apicomplexa: Eimeriidae) parasites of the eastern small-footed myotis, Myotis leibii (Chiroptera: Vespertilionidae) from Arkansas, with a description of a new species of Eimeria
  30. Molecular identification of Thelandros scleratus and Thelastoma icemi (Nematoda: Oxyruida) using mitochondrial cox 1 sequences
  32. First report on molecular evidence of Tylodelphys cerebralis (Diplostomulum cerebralis) Chakrabarti, 1968 (Digenea: Diplostomidae) from snakehead fish Channa punctata
  34. The role of domestic dogs in the transmission of zoonotic helminthes in a rural area of Mekong river basin
  36. The discovery of acanthocephalans parasitizing chaetognaths
  38. Redescription of Philometra margolisiMoravec, Vidal-Martínez et Aguirre-Macedo, 1995 (Nematoda: Philometridae), a gonad-infecting parasite of the red grouper Epinephelus morio (Serranidae) in the Gulf of Mexico
  40. Nematode parasites of the Chilean Flamingo, Phoenicopterus chilensis (Phoenicopteridae) from Central Argentina, with a description of a new species of Tetrameres (Tetrameridae)
  42. Molecular evidence and additional morphological characters to distinguish Ornithodoros brodyi and Ornithodoros yumatensis (Ixodida: Argasidae) in their different developmental stages
  44. Morphological description of Cosmocerca sp. (Nematoda: Cosmocerdidae) from the Mascarene grass frog Ptychadena cf. mascareniensis (Amphibia: Ptychadenidae). A light and scanning electron microscopic studies
  46. Detection of Echinococcus multilocularis DNA in fruit, vegetable, and mushroom samples collected in the non-endemic territory of the Pomerania province and comparison of the results with data from rural areas of the neighbouring highly endemic Warmia-Masuria province, Poland
  48. Toxoplasma gondii in backyard pigs: seroepidemiology and mouse bioassay
  50. Infection of the lesser spotted dogfish with Proleptus obtusus Dujardin, 1845 (Nematoda: Spirurida) reflects ontogenetic feeding behaviour and seasonal differences in prey availability
  52. A new species of the quill mite genus ChenophilaKethley, 1970 (Acariformes: Syringophilidae) from the Marbled Teal Marmaronetta angustirostris (Menetries) (Anseriformes: Anatidae) in Turkey
  54. Neuropathological lesions of clinical and sub clinical Coenurosis (Coenurus cerebralis) in organized goat farms in India
  55. Case Report
  56. Fatal aelurostrongylosis in a kitten in Serbia
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