New records of Ergasilus (Copepoda: Ergasilidae) in the Laurentian Great Lakes, including a lakewide review of records and host associations

1994 ◽  
Vol 72 (6) ◽  
pp. 1002-1009 ◽  
Author(s):  
Patrick L. Hudson ◽  
Charles A. Bowen II ◽  
Ralph M. Stedman
Keyword(s):  
Great Lakes ◽  
Gasterosteus Aculeatus ◽  
Lake Trout ◽  
Micropterus Salmoides ◽  
Lake Huron ◽  
Pungitius Pungitius ◽  
Mean Intensity ◽  
Ninespine Stickleback ◽  
Host Parasite ◽  
First Time

Ergasilus nerkae was found infecting ninespine stickleback (Pungitius pungitius) in lakes Huron, Michigan, and Superior and threespine stickleback (Gasterosteus aculeatus) and round whitefish (Prosopium cylindraceum) in Lake Huron. Based upon the literature and study of archived material, we propose that E. nerkae is enzootic to the Great Lakes and that ninespine stickleback are a preferred host in Lake Huron. Prevalence of E. nerkae on ninespine stickleback increased from 17% in June to 68% in September, but mean intensity remained light. Prevalence and mean intensity increased with host length. Ergasilus luciopercarum is also reported on lake trout (Salvelinus namaycush) and largemouth bass (Micropterus salmoides) for the first time. Host–parasite records of Ergasilus spp. in North America are reviewed, biology and taxonomy are summarized, and a checklist of Great Lakes host–parasite–locality records is provided. At present, eight species of Ergasilus are known to infect 42 Great Lakes fish species.

Spatial variability of lake trout diets in Lakes Huron and Michigan revealed by stomach content and fatty acid profiles

2018 ◽  
Vol 75 (1) ◽  
pp. 95-105 ◽  
Author(s):  
Austin Happel ◽  
Jory L. Jonas ◽  
Paul R. McKenna ◽  
Jacques Rinchard ◽  
Ji Xiang He ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Great Lakes ◽  
Lake Michigan ◽  
Lake Trout ◽  
Stomach Contents ◽  
Neogobius Melanostomus ◽  
Lake Huron ◽  
Fatty Acid Profiles ◽  
Rainbow Smelt ◽  
Western Lake

Despite long-term efforts to restore lake trout (Salvelinus namaycush) populations in the Great Lakes, they continue to experience insufficient recruitment and rely on hatchery programs to sustain stocks. As lake trout reproductive success has been linked to diets, spatial heterogeneity in diet compositions is of interest. To assess spatial components of adult lake trout diets, we analyzed stomach contents and fatty acid profiles of dorsal muscle collected throughout Lake Michigan and along Lake Huron’s Michigan shoreline. Lake trout from Lake Huron were generally larger in both length and mass than those from Lake Michigan. However, lake trout from Lake Michigan varied more in size based on depth of capture with smaller fish being caught more in deeper set nets. Fatty acids and stomach contents indicated that alewife (Alosa pseudoharengus) were consumed more in western Lake Michigan in contrast with round goby (Neogobius melanostomus) along the eastern shoreline. Conversely, in Lake Huron, lake trout primarily consumed rainbow smelt (Osmerus mordax). These results indicate that diet compositions of lake trout populations are relatively plastic and offer new insights into within-basin heterogeneity of Great Lakes food webs.

PARASITE FAUNA OF THE SEA LAMPREY (PETROMYZON MARINUS VON LINNÉ) IN THE GREAT LAKES REGION

1967 ◽  
Vol 45 (6) ◽  
pp. 1083-1092 ◽  
Author(s):  
K. A. Wilson ◽  
K. Ronald
Keyword(s):  
Great Lakes ◽  
Microscopic Examination ◽  
Parasite Species ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Parasite Fauna ◽  
Lake Huron ◽  
Great Lakes Region ◽  
Sea Lampreys ◽  
First Time

Seven hundred and fifteen adult sea lampreys (Petromyzon marinus von Linné) from four streams tributary to Lake Huron and five offshore samples from the Manitoulin Island – Bruce Peninsula area, were examined for parasites.Dissection and microscopic examination revealed the presence of eight parasite species. Cucullanus stelmioides Vessichelli, 1910 is recorded for the first time both as a parasite of P. marinus and from North American waters. Ergasilus caeruleus Wilson, 1911, Anodontoides ferussacianus Lea. 1834, Diplostomum huronense (La Rue 1927), Plagioporus lepomis Dobrovolny, 1939 are all recorded for the first time as parasites of P. marinus. Echinorhynchus salmonis Müller, 1784, Triaenophorus crassus Forel, 1868, and Proteocephalus sp. are redescribed as parasites of the sea lamprey.

Compsopogon cf. coeruleus, a benthic red alga (Rhodophyta) new to the Laurentian Great Lakes

1991 ◽  
Vol 69 (6) ◽  
pp. 1237-1240 ◽  
Author(s):  
Bruce A. Manny ◽  
Thomas A. Edsall ◽  
Daniel E. Wujek
Keyword(s):  
Great Lakes ◽  
Red Algae ◽  
Red Alga ◽  
Lake Huron ◽  
Laurentian Great Lakes ◽  
Winter Temperatures ◽  
Permanent Member ◽  
Freshwater Red Algae ◽  
First Time ◽  
Offshore Reef

We found Compsopogon cf. coeruleus for the first time in the Laurentian Great Lakes, growing on limestone rocks at a depth of 21 m on Six Fathom Bank in central Lake Huron. It is the first freshwater red alga to be found in the Great Lakes and the only red alga ever found on an offshore reef in the Great Lakes. However, because this alga usually inhabits water 10–28 °C and has not survived freezing winter temperatures elsewhere, it may not be a permanent member of the flora. Key words: benthic, Compsopogon, freshwater red algae, Great Lakes, Lake Huron.

Neoechinorhynchus pungitius n. sp. (Acanthocephala: Neoechinorhynchidae) from ninespine stickleback of Lake Huron

1971 ◽  
Vol 49 (4) ◽  
pp. 483-486 ◽  
Author(s):  
Alex O. Dechtiar
Keyword(s):  
Yellow Perch ◽  
Perca Flavescens ◽  
Lake Huron ◽  
Pungitius Pungitius ◽  
Ninespine Stickleback

Neoechinorhynchus pungitius n. sp. is described on the basis of more than 100 specimens collected from the ninespine stickleback, Pungitius pungitius (Linnaeus), from South Bay, Lake Huron. Several additional specimens were collected from brook sticklebacks, Eucalia inconstans (Kirtland), and from yellow perch, Perca flavescens (Mitchill).

scholarly journals Seasonality and host-parasite interrelationship of Hysterothylacium aduncum (Nematoda) in whiting Merlangius merlangus off the southern and northern coasts of the Black Sea

2016 ◽  
Vol 53 (3) ◽  
pp. 248-256 ◽  
Author(s):  
A. Özer ◽  
Y. M. Kornyychuk ◽  
V. Yurakhno ◽  
T. Öztürk
Keyword(s):  
Digestive Tract ◽  
Black Sea ◽  
Nematode Species ◽  
The Black Sea ◽  
Season Length ◽  
Mean Intensity ◽  
Merlangius Merlangus ◽  
Host Parasite ◽  
First Time ◽  
Hysterothylacium Aduncum

SummaryIn the present study, we investigated the comparative infection levels, ecology and host-parasite interrelationship of a nematodeHysterothylacium aduncum(Rudolphi, 1802) in whiting,Merlangius merlangus(L., 1758) in southern (Sinop) and northern (Balaklava Bay) coasts of the Black Sea for the first time. Fish were collected throughout a period from May 2011 to March 2014 from local fishermen. A total of 690 fish specimens near Sinop and 423 fish near Balaklava Bay were examined for parasites.Hysterothylacium aduncumwas the only nematode species identified in the digestive tract of the Black Sea whitingMerlangius merlangus. Prevalence of infection, mean intensity and mean abundance values were determined according to season, length classes and sex of fish at both localities. These infection indices were always higher in Sinop samples than those of Balaklava Bay samples.

Host–parasite relationships and geographic distribution of Salmincola corpulentus (Copepoda: Lernaeopodidae) on bloater (Coregonus hoyi) stocks in Lake Huron

1990 ◽  
Vol 68 (9) ◽  
pp. 1988-1994 ◽  
Author(s):  
Charles A. Bowen II ◽  
Ralph M. Stedman
Keyword(s):  
Geographic Distribution ◽  
Lake Huron ◽  
Anterior Portion ◽  
Geographic Locations ◽  
Mean Intensity ◽  
Parasitic Copepods ◽  
The Mean ◽  
Host Parasite ◽  
Coregonus Hoyi ◽  
Sexually Mature

Examination of the branchial cavities of 8347 adult bloaters (Coregonus hoyi) collected from seven locations in Lake Huron for parasitic copepods yielded only the lernaeopodid Salmincola corpulentus; its distribution was limited to bloaters collected in the southern two-thirds of the lake. The infections were highest off Au Sable Point and on Six Fathom Bank, where 12 and 22%, of the bloaters examined were infected, respectively. All copepods seen were sexually mature females. The dorsal anterior portion of the branchial rim was the preferred site of attachment. The prevalence of S. corpulentus increased with length of the bloaters, reaching a maximum of 40% in fish longer than 330 mm; none were seen in bloaters shorter than 182 mm. The mean intensity of S. corpulentus was unusually low (1.0–1.9) for a lernaeopodid copepod and the maximum number of copepods found on a single bloater was five. Prevalences of copepods differed significantly (P < 0.05) between bloaters collected at different geographic locations, suggesting that S. corpulentus may be of value in bloater stock determination.

scholarly journals Recognition Pattern of the Fasciola hepatica Excretome/Secretome during the Course of an Experimental Infection in Sheep by 2D Immunoproteomics

Pathogens ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 725
Author(s):  
David Becerro-Recio ◽  
Javier González-Miguel ◽  
Alberto Ucero ◽  
Javier Sotillo ◽  
Álvaro Martínez-Moreno ◽  
...  
Keyword(s):  
Experimental Infection ◽  
Fasciola Hepatica ◽  
Cathepsin L ◽  
Helminth Parasites ◽  
Glutathione S Transferase ◽  
Serum Samples ◽  
Secretory Products ◽  
Immunogenic Proteins ◽  
Host Parasite ◽  
First Time

Excretory/secretory products released by helminth parasites have been widely studied for their diagnostic utility, immunomodulatory properties, as well as for their use as vaccines. Due to their location at the host/parasite interface, the characterization of parasite secretions is important to unravel the molecular interactions governing the relationships between helminth parasites and their hosts. In this study, the excretory/secretory products from adult worms of the trematode Fasciola hepatica (FhES) were employed in a combination of two-dimensional electrophoresis, immunoblot and mass spectrometry, to analyze the immune response elicited in sheep during the course of an experimental infection. Ten different immunogenic proteins from FhES recognized by serum samples from infected sheep at 4, 8, and/or 12 weeks post-infection were identified. Among these, different isoforms of cathepsin L and B, peroxiredoxin, calmodulin, or glutathione S-transferase were recognized from the beginning to the end of the experimental infection, suggesting their potential role as immunomodulatory antigens. Furthermore, four FhES proteins (C2H2-type domain-containing protein, ferritin, superoxide dismutase, and globin-3) were identified for the first time as non-immunogenic proteins. These results may help to further understand host/parasite relationships in fasciolosis, and to identify potential diagnostic molecules and drug target candidates of F. hepatica.

Classification of Sea Lamprey (Petromyzon marinus) Attack Marks on Great Lakes Lake Trout (Salvelinus namaycush)

1980 ◽  
Vol 37 (11) ◽  
pp. 1989-2006 ◽  
Author(s):  
Everett Louis King Jr.
Keyword(s):  
Great Lakes ◽  
Lake Trout ◽  
Petromyzon Marinus ◽  
Attachment Site ◽  
Sea Lamprey ◽  
Salvelinus Namaycush ◽  
Oral Disc ◽  
Field Assessment ◽  
Sea Lampreys

Criteria for the classification of marks inflicted by sea lamprey (Petromyzon marinus) into nine categories were developed from laboratory studies in an attempt to refine the classification system used in field assessment work. These criteria were based on characteristics of the attachment site that could be identified under field conditions by unaided visual means and by touching the attachment site. Healing of these marks was somewhat variable and was influenced by the size of lamprey, duration of attachment, severity of the wound at lamprey detachment, season and water temperature, and by other less obvious factors. Even under laboratory conditions staging of some wounds was difficult, especially at low water temperatures. If these criteria are to be used effectively and with precision in the field, close examination of individual fish may be required. If the feeding and density of specific year-classes of sea lampreys are to be accurately assessed on an annual basis, close attention to the wound size (as it reflects the size of the lamprey's oral disc) and character of wounds on fish will be required as well as consideration of the season of the year in which they are observed.Key words: sea lamprey, attack marks, lake trout, Great Lakes

Fish community change in Lake Superior, 1970–2000

2003 ◽  
Vol 60 (12) ◽  
pp. 1552-1574 ◽  
Author(s):  
Charles R Bronte ◽  
Mark P Ebener ◽  
Donald R Schreiner ◽  
David S DeVault ◽  
Michael M Petzold ◽  
...  
Keyword(s):  
Great Lakes ◽  
Native Species ◽  
Fish Community ◽  
Lake Trout ◽  
Community Change ◽  
Osmerus Mordax ◽  
Rainbow Smelt ◽  
Additional Species ◽  
Community Agencies ◽  
Natural Reproduction

Changes in Lake Superior's fish community are reviewed from 1970 to 2000. Lake trout (Salvelinus namaycush) and lake whitefish (Coregonus clupeaformis) stocks have increased substantially and may be approaching ancestral states. Lake herring (Coregonus artedi) have also recovered, but under sporadic recruitment. Contaminant levels have declined and are in equilibrium with inputs, but toxaphene levels are higher than in all other Great Lakes. Sea lamprey (Petromyzon marinus) control, harvest limits, and stocking fostered recoveries of lake trout and allowed establishment of small nonnative salmonine populations. Natural reproduction supports most salmonine populations, therefore further stocking is not required. Nonnative salmonines will likely remain minor components of the fish community. Forage biomass has shifted from exotic rainbow smelt (Osmerus mordax) to native species, and high predation may prevent their recovery. Introductions of exotics have increased and threaten the recovering fish community. Agencies have little influence on the abundance of forage fish or the major predator, siscowet lake trout, and must now focus on habitat protection and enhancement in nearshore areas and prevent additional species introductions to further restoration. Persistence of Lake Superior's native deepwater species is in contrast to other Great Lakes where restoration will be difficult in the absence of these ecologically important fishes.

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