Trematodes of the Pacific Northwest, an annotated catalog [by] Ivan Pratt [and] James E. McCauley.

McCauley, James E.; Pratt, Ivan

doi:10.5962/bhl.title.7307

Cited by 12 publications

(11 citation statements)

References 40 publications

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“…It is this host (or hosts) that is (are) important in determining the distribution and abundance of the parasite species. The starry flounder is known to serve as host to several of the parasite species considered here, including T. lindbergi, B. ozaki, P. atomon, E. lageniformis, and C. annulatus (Pratt and McCauley, 1961;Love and Moser, 1983). If the starry flounder was an important host species in Yaquina Bay, its reduced numbers there could be at least a partial explanation for the observed parasite population changes.…”

Section: Discussionmentioning

confidence: 99%

Temporal Changes in the Prevalence of Parasites in Two Oregon Estuary–dwelling Fishes

Olson

Pierce

Jacobson

et al. 2004

Journal of Parasitology

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The parasite faunas of juvenile English sole (Parophrys vetulus) in 1971-1972 and staghorn sculpin (Leptocottus armatus) in 1971 from Yaquina Bay, Oregon, were compared with faunas found in the same estuary in 1997-2000 (English sole) and 1999-2000 (staghorn sculpin). The 7 most commonly occurring parasites in 1971 were compared with the same species observed during the same month and sampling sites in 1997-2000. Multivariate community analysis of juvenile English sole parasites supported the suggestion that the 1971 parasite data were representative of the early-1970s time period. Four of the parasite species infecting English sole and 6 of those infecting staghorn sculpins had significantly lower prevalences in 1997-2000. Parasite species with significantly lower prevalences also had reduced intensity levels. One parasite (Glugea stephani) of English sole increased in prevalence in the 1997-2000 samples in association with the warm estuarine temperatures during the 1997 El Niño year. Although the causes for the changes in occurrence of other parasites were not determined, ecological changes in Yaquina Bay that may have influenced parasite ecology include apparent changes in the estuary ichthyofauna that occurred between the sampling periods. Such changes could be associated with increases in the number of California sea lions (Zalophus californianus) subsequent to establishment of the Marine Mammal Protection Act in 1972.

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Section: Discussionmentioning

confidence: 99%

Temporal Changes in the Prevalence of Parasites in Two Oregon Estuary–dwelling Fishes

Olson

Pierce

Jacobson

et al. 2004

Journal of Parasitology

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“…dienteros in either one. Similarly, Pratt and McCauley (1961) listed a toad, Bufo boreas Baird and Girard, as a host of 0 . dienteros because Sumwalt (1926) stated, in reference to specimens recovered from Bufo boreas boreas Baird and Girard, that "The circumstantial evidence suggests that ,the toad fluke is identical with the snake fluke: finding its natural habitat in the toad; but also able occasionally, though with diminished vigor, to parasitize the snake."…”

Section: Discussionmentioning

confidence: 98%

“…Pratt and McCauley (1961) and Yamaguti (1 97 1) both listed Thamnophis ordinoides (Baird and Girard) as a host for 0 . dienteros, attributing the record to Sumwalt (1926).…”

Section: Discussionmentioning

confidence: 98%

Ophioxenos lampetrae sp. nov. (Digenea: Paramphistomidae) from ammocoetes of the western brook lamprey (Lampetra richardsoni Vladykov and Follett) in British Columbia, with comments on lamprey host–parasite relationships

Beverley‐Burton¹,

Margolis²

1982

Can. J. Zool.

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Ophioxenos lampetrae sp. nov. (Digenea: Paramphistomidae) from the intestine of ammocoetes of the western brook lamprey (Lampetra richardsoni) in British Columbia, Canada, is described. It is distinguished from other members of the genus, O. dienteros and O. singularis (parasites of reptiles, primarily garter snakes, and amphibians in North America), by having relatively few vitelline folicles of limited anterior extent and a voluminous uterus filling most available intercaecal space. This appears to be the first record of a digenean utilizing a petromyzontid as a definitive host. Some aspects of lamprey host–parasite relationships are discussed.

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“…Subsequently, D. cholaeum (Syn. Deretrema pooli Annereaux, 1947) has been reported infecting the bile duct, gall bladder, and intestine of unidentified species of Sebastes in the NE Pacific Ocean from off British Columbia and Santa Cruz, California (Annereaux, 1947;Yamaguti, 1958Yamaguti, , 1971Pratt and McCauley, 1961;Chapa, 1969Chapa, , 1976Moser, 1976, 1983;Margolis and Arthur, 1979;Gibson, 1996). Deretrema cholaeum has been documented from one of the host species in this study, Se.…”

Section: Discussionmentioning

confidence: 99%

Steganoderma Stafford, 1904 (Digenea: Zoogonidae: Lepidophyllinae) from Two Species of Rockfishes from Deep Waters off Oregon Including a New Species and an Updated Key to Species of This Genus

Blend

Rácz

2020

MANT

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Steganoderma eamiqtrema n. sp. and a single unidentified specimen of Steganoderma Stafford, 1904 (Zoogonidae: Lepidophyllinae) obtained from the intestine of the greenstriped rockfish, Sebastes elongatus Ayres, 1859, and the flag rockfish, Sebastes rubrivinctus (Jordan and Gilbert, 1880) (Scorpaeniformes: Sebastidae), collected from 190–200 m depths off Oregon, USA, are described. The new species is distinguished from its seven other congeners by a diagnostic combination of morphological features including an elongate oval to spindle-shaped body, a clavate to comma-shaped cirrus pouch located in the forebody and hindbody, a bipartite seminal vesicle, a bifurcal or just post-bifurcal genital pore, a larger ventral than oral sucker, and a smooth testes and ovary with a relatively small distance between them. We present an updated key to the eight species now in Steganoderma and provide a list of parasites known from Se. elongatus and Se. rubrivinctus. The discovery of S. eamiqtrema in Se. elongatus represents the second species of zoogonid known from this host, and the finding of Steganoderma sp. in Se. rubrivinctus represents the first report of a digenean from this host species. A detailed discussion also is given of the type species, S. formosum Stafford, 1904, and questions are raised as to whether this species has a worldwide distribution and infects such a wide variety of fish hosts. We present evidence including variation we observed in redescriptions of the type species, query the implausible idea that there could be gene flow between conspecific helminths geographically separated in the North Atlantic and North Pacific Oceans over such a vast geological period, and offer the possibility that some prior reports of S. formosum may, indeed, be S. eamiqtrema; all of which suggests S. formosum sensu lato may be part of a species complex and not the same worldwide species. Steganoderma is represented in the deep sea by S. eamiqtrema, S. formosum, and Steganoderma sp., and limited speculation is given as to the host specificity of this genus and life history strategies of the new species in deeper waters. Finally, molecular studies of species of Steganoderma are sorely needed (i.e., there is no DNA sequence data currently available in GenBank for any species of this genus), and we suspect that with further molecular, morphological, and life history work, this genus will be taxonomically divided up.

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Trematodes of the Pacific Northwest, an annotated catalog [by] Ivan Pratt [and] James E. McCauley.

Abstract: Morphology: Mueller (1934) partiallj' described this form. Biolog}^: The life history of this form is not known, but that of another species in this genus has been worked out by Seitner (1951).

Cited by 12 publications

References 40 publications

Temporal Changes in the Prevalence of Parasites in Two Oregon Estuary–dwelling Fishes

Temporal Changes in the Prevalence of Parasites in Two Oregon Estuary–dwelling Fishes

Ophioxenos lampetrae sp. nov. (Digenea: Paramphistomidae) from ammocoetes of the western brook lamprey (Lampetra richardsoni Vladykov and Follett) in British Columbia, with comments on lamprey host–parasite relationships

Steganoderma Stafford, 1904 (Digenea: Zoogonidae: Lepidophyllinae) from Two Species of Rockfishes from Deep Waters off Oregon Including a New Species and an Updated Key to Species of This Genus

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