Responses of two sentinel species (Hexagenia limbata—mayfly; Pyganodon grandis—bivalve) along spatial cadmium gradients in lakes and rivers in northwestern Québec

2010 ◽  
Vol 12 (1) ◽  
pp. 143-158 ◽  
Author(s):  
Stéphane Masson ◽  
Yves Couillard ◽  
Peter G. C. Campbell ◽  
Caroline Olsen ◽  
Bernadette Pinel-Alloul ◽  
...  
Keyword(s):  
Sentinel Species ◽  
Pyganodon Grandis ◽  
Hexagenia Limbata

scholarly journals Réponses de trois espèces sentinelles aquatiques à la contamination en métaux traces dans deux rivières de l'Abitibi, Québec

2005 ◽  
Vol 18 ◽  
pp. 143-160
Author(s):  
S. Masson ◽  
P. G.C. Campbell ◽  
C. Olsen ◽  
R. Martel ◽  
B. Pinel-Alloul ◽  
...  
Keyword(s):  
Esox Lucius ◽  
Prise En Charge ◽  
Pyganodon Grandis ◽  
Hexagenia Limbata

La métallothionéine (MT) est un ligand protéinique intracellulaire important à cause de son implication dans les processus de régulation des métaux traces essentiels et non-essentiels. Bon nombre de travaux ont été conduits en laboratoire pour bien comprendre les mécanismes de synthèse de cette protéine, mais les études réalisées en milieu aquatique sont beaucoup plus rares, particulièrement dans les rivières (milieu lotique). Dans ce contexte, la présente étude avait deux objectifs principaux : (1) identifier en milieu lotique les métaux traces (argent "Ag", cadmium "Cd", cuivre "Cu", nickel "Ni", plomb "Pb" et zinc "Zn") susceptibles d'induire la synthèse de la MT chez trois espèces sentinelles, soit le mollusque bivalve Pyganodon grandis, la larve d'éphémère Hexagenia limbata et le grand brochet du nord Esox lucius ; (2) définir les variables physico-chimiques ou toxicologiques pouvant influencer la prise en charge des métaux traces et conséquemment les concentrations en MT chez le mollusque P. grandis et l'éphémère H. limbata. Deux rivières de la région de l'Abitibi ont été échantillonnées à l'été 2001 afin de récolter les espèces sentinelles à 21 stations. Les concentrations en métaux traces, ainsi qu'en métallothionéine, ont été mesurées dans les branchies des mollusques, dans le rein des brochets et dans le corps entier des éphémères. La métallothionéine a été mesurée à l'aide d'une technique de saturation au mercure. D'après nos résultats, le cadmium tissulaire semble être le meilleur prédicteur de la concentration de MT chez les trois espèces sentinelles. Cependant, l'implication d'autres métaux est également possible. Dans le cas de P. grandis, la concentration de manganèse (Mn) dans les sédiments pourrait influencer la prise en charge du Cd et la synthèse de MT.

scholarly journals Shellfish Toxin Uptake and Depuration in Multiple Atlantic Canadian Molluscan Species: Application to Selection of Sentinel Species in Monitoring Programs

Toxins ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 168
Author(s):  
Wade A. Rourke ◽  
Andrew Justason ◽  
Jennifer L. Martin ◽  
Cory J. Murphy
Keyword(s):  
Monitoring Program ◽  
Sentinel Species ◽  
Paralytic Shellfish Toxins ◽  
Monitoring Programs ◽  
Paralytic Shellfish ◽  
Shellfish Toxin ◽  
Multiple Species ◽  
Toxin Uptake ◽  
Bivalve Shellfish ◽  
Selection Of

Shellfish toxin monitoring programs often use mussels as the sentinel species to represent risk in other bivalve shellfish species. Studies have examined accumulation and depuration rates in various species, but little information is available to compare multiple species from the same harvest area. A 2-year research project was performed to validate the use of mussels as the sentinel species to represent other relevant eastern Canadian shellfish species (clams, scallops, and oysters). Samples were collected simultaneously from Deadmans Harbour, NB, and were tested for paralytic shellfish toxins (PSTs) and amnesic shellfish toxin (AST). Phytoplankton was also monitored at this site. Scallops accumulated PSTs and AST sooner, at higher concentrations, and retained toxins longer than mussels. Data from monitoring program samples in Mahone Bay, NS, are presented as a real-world validation of findings. Simultaneous sampling of mussels and scallops showed significant differences between shellfish toxin results in these species. These data suggest more consideration should be given to situations where multiple species are present, especially scallops.

Salmonellainfection in grey seals (Halichoerus grypus), a marine mammal sentinel species: pathogenicity and molecular typing ofSalmonellastrains compared with human and livestock isolates

2016 ◽  
Vol 18 (3) ◽  
pp. 1078-1087 ◽  
Author(s):  
Johanna L. Baily ◽  
Geoffrey Foster ◽  
Derek Brown ◽  
Nicholas J. Davison ◽  
John E. Coia ◽  
...  
Keyword(s):  
Marine Mammal ◽  
Molecular Typing ◽  
Sentinel Species ◽  
Halichoerus Grypus

Dynamics and Exploitation of Mature Walleyes, Stizostedion vitreum vitreum, in the Nipigon Bay Region of Lake Superior

1968 ◽  
Vol 25 (7) ◽  
pp. 1347-1376 ◽  
Author(s):  
R. A. Ryder
Keyword(s):  
Lake Trout ◽  
Lake Superior ◽  
Total Mortality ◽  
Inland Waters ◽  
Commercial Fishery ◽  
Sea Lampreys ◽  
Wood Fibres ◽  
High Concentrations ◽  
Trout Fishery ◽  
Hexagenia Limbata

Walleye stocks in Nipigon Bay of Lake Superior were homogeneous with those in tributary inland waters but were discrete from Black Bay stocks. Returns from 2200 tagged walleyes in Lake Superior and tributary inland waters between 1955 and 1958 varied from 7.8 to 31.0% for 2 years after release. The commercial fishery in Lake Superior recovered 64.9% of the tags, the sports fishery in inland waters captured 27.6%. Fish tagged in the Nipigon River travelled a mean distance of 11.8 miles from the point of release and were recovered in 191 days (average). Total mortality rates for Nipigon Bay walleyes were 55.0% (1955–57). Mature walleyes on the spawning grounds in the Nipigon River in 1957 were estimated at 22,000, and fish in Nipigon Bay over 14 inches (total length) the same year at 41,000. All male walleyes were mature at 15 inches and females at 18 inches. Walleyes exploitation rates increased with the decline of the lake trout fishery. Wounding and scarring rates by sea lampreys increased during 1955–57 but never exceeded 1.0% on adult walleyes. Severe pollution on the west side of Nipigon Bay originated from a kraft mill. High concentrations of total solids and dense sedimentation of wood fibres created an environment unfavourable to Hexagenia limbata and Pontoporeia affinis. The recent elimination of the walleye fishery in Nipigon Bay is most likely attributable to industrial pollution rather than to overexploitation or sea lamprey predation.

Life Histories of Hexagenia limbata and Ephemera simulans (Ephemeroptera) in Dauphin Lake, Manitoba

1987 ◽  
Vol 6 (4) ◽  
pp. 230-240 ◽  
Author(s):  
Brian A. Heise ◽  
John F. Flannagan ◽  
Terry D. Galloway
Keyword(s):  
Life Histories ◽  
Hexagenia Limbata

Site fidelity of slimy sculpin (Cottus cognatus): insights from stable carbon and nitrogen analysis

2004 ◽  
Vol 61 (9) ◽  
pp. 1717-1722 ◽  
Author(s):  
M A Gray ◽  
R A Cunjak ◽  
K R Munkittrick
Keyword(s):  
Environmental Impacts ◽  
Site Fidelity ◽  
Fish Muscle ◽  
Sentinel Species ◽  
Agricultural Activity ◽  
Local Conditions ◽  
Cottus Cognatus ◽  
Site Specific ◽  
Isotopic Signatures ◽  
Slimy Sculpin

Concerns regarding sentinel species for assessing environmental impacts include residency, abundance, and suitability for measuring responses, if effects are to be attributable to local conditions. Stable isotope analysis was used as a tool to investigate site fidelity of slimy sculpin (Cottus cognatus) to establish residency and exposure for the sculpin. We predicted that sculpin collected from sites adjacent to agricultural activity would show higher δ15N values than those collected from sites in forested areas because of isotopic enrichment by fertilizers in the former. The predominant use of chemical fertilizer applications in the region, however, resulted in no specific enrichment of 15N in sculpin collected in the agricultural region. However, there was an incremental enrichment in the fish muscle tissue of approximately 5‰ in δ13C values in a downstream direction, irrespective of surrounding land use. As a result, the dual-isotope comparison was successful at demonstrating site-specific isotopic signatures across sites for 30 km of the river system. The site-specific signatures suggest that slimy sculpin are not moving considerable distances among sites and are incorporating their isotopic signatures over a narrow spatial scale. The results support the use of the slimy sculpin as a sentinel species for investigating site-specific environmental impacts.

Sentinel Species and Sentinel Bioassay

2018 ◽  
pp. 309-331 ◽  
Author(s):  
W. R. Lower ◽  
R.J. Kendall
Keyword(s):  
Sentinel Species
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