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, Norman O. Dronen, Gabor R. Racz, Scott L. Gardner

Research output: Contribution to journalReview article

4 Citations (Scopus)

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 Pseudopecoelus von 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.

Original languageEnglish (US)
Pages (from-to)231-254
Number of pages24
JournalActa Parasitologica
Volume62
Issue number2
DOIs
StatePublished - Jun 1 2017

Fingerprint

Perciformes
Gadiformes
British Columbia
Checklist
Intestines
Parasites
Pacific Ocean
Water
Seminal Vesicles
Host Specificity
Pharynx
Islands
Oceans and Seas
Ovum
Testis
Ovary
Fishes

Keywords

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

ASJC Scopus subject areas

  • Parasitology

Cite this

@article{1a29d5e75ee5435a9868a49c2a6ac722,
title = "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)",
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 Pseudopecoelus von 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",
author = "Blend, {Charles K.} and Dronen, {Norman O.} and Racz, {Gabor R.} and Gardner, {Scott L.}",
year = "2017",
month = "6",
day = "1",
doi = "10.1515/ap-2017-0031",
language = "English (US)",
volume = "62",
pages = "231--254",
journal = "Acta Parasitologica",
issn = "1230-2821",
publisher = "Walter de Gruyter GmbH",
number = "2",

}

TY - JOUR

T1 - Pseudopecoelus mccauleyi n. Sp. and Podocotyle sp. (Digenea

T2 - 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)

AU - Blend, Charles K.

AU - Dronen, Norman O.

AU - Racz, Gabor R.

AU - Gardner, Scott L.

PY - 2017/6/1

Y1 - 2017/6/1

N2 - 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 Pseudopecoelus von 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.

AB - 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 Pseudopecoelus von 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.

KW - British Columbia

KW - Coryphaenoides sp.

KW - Digenea

KW - Key

KW - Lycodes cortezianus

KW - Macrouridae

KW - Opecoelidae

KW - Opecoelinae

KW - Oregon

KW - Plagioporinae

KW - Podocotyle sp.

KW - Pseudopecoelus mccauleyi n. Sp.

KW - Vancouver Island

KW - Zoarcidae

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U2 - 10.1515/ap-2017-0031

DO - 10.1515/ap-2017-0031

M3 - Review article

C2 - 28426426

AN - SCOPUS:85018562708

VL - 62

SP - 231

EP - 254

JO - Acta Parasitologica

JF - Acta Parasitologica

SN - 1230-2821

IS - 2

ER -