Swimming Performance of Brook Trout after Simulated Catch-and-Release Angling: Looking for Air Exposure Thresholds

2005 ◽  
Vol 25 (4) ◽  
pp. 1513-1517 ◽  
Author(s):  
Jason F. Schreer ◽  
Dayna M. Resch ◽  
Malachy L. Gately ◽  
Steven J. Cooke
Keyword(s):  
Brook Trout ◽  
Swimming Performance ◽  
Air Exposure ◽  
Catch And Release

Evaluation of Catch-and-Release Regulations on Brook Trout in Pennsylvania Streams

2014 ◽  
Vol 34 (1) ◽  
pp. 49-56 ◽  
Author(s):  
Jason Detar ◽  
David Kristine ◽  
Tyler Wagner ◽  
Tom Greene
Keyword(s):  
Brook Trout ◽  
Catch And Release

scholarly journals Molecular and physiological responses predict acclimation limits in juvenile brook trout (Salvelinus fontinalis)

2021 ◽  
Vol 224 (16) ◽  
Author(s):  
Theresa E. Mackey ◽  
Caleb T. Hasler ◽  
Travis Durhack ◽  
Jennifer D. Jeffrey ◽  
Camille J. Macnaughton ◽  
...  
Keyword(s):  
Heat Shock ◽  
High Temperatures ◽  
Brook Trout ◽  
Salvelinus Fontinalis ◽  
Acute Stress ◽  
Physiological Responses ◽  
Heat Shock Protein 90 ◽  
Acclimation Temperature ◽  
Muscle Lactate ◽  
Air Exposure

ABSTRACT Understanding the resilience of ectotherms to high temperatures is essential because of the influence of climate change on aquatic ecosystems. The ability of species to acclimate to high temperatures may determine whether populations can persist in their native ranges. We examined physiological and molecular responses of juvenile brook trout (Salvelinus fontinalis) to six acclimation temperatures (5, 10, 15, 20, 23 and 25°C) that span the thermal distribution of the species to predict acclimation limits. Brook trout exhibited an upregulation of stress-related mRNA transcripts (heat shock protein 90-beta, heat shock cognate 71 kDa protein, glutathione peroxidase 1) and downregulation of transcription factors and osmoregulation-related transcripts (nuclear protein 1, Na+/K+/2Cl− co-transporter-1-a) at temperatures ≥20°C. We then examined the effects of acclimation temperature on metabolic rate (MR) and physiological parameters in fish exposed to an acute exhaustive exercise and air exposure stress. Fish acclimated to temperatures ≥20°C exhibited elevated plasma cortisol and glucose, and muscle lactate after exposure to the acute stress. Fish exhibited longer MR recovery times at 15 and 20°C compared with the 5 and 10°C groups; however, cortisol levels remained elevated at temperatures ≥20°C after 24 h. Oxygen consumption in fish acclimated to 23°C recovered quickest after exposure to acute stress. Standard MR was highest and factorial aerobic scope was lowest for fish held at temperatures ≥20°C. Our findings demonstrate how molecular and physiological responses predict acclimation limits in a freshwater fish as the brook trout in the present study had a limited ability to acclimate to temperatures beyond 20°C.

Going against the flow: an examination of the propulsive movements made by young brook trout in streams

1998 ◽  
Vol 55 (4) ◽  
pp. 853-860 ◽  
Author(s):  
Robert L McLaughlin ◽  
David LG Noakes
Keyword(s):  
Brook Trout ◽  
Swimming Performance ◽  
Beat Frequency ◽  
Fork Length ◽  
Spatial Location ◽  
Laboratory Studies ◽  
Pectoral Fins ◽  
Tail Beat ◽  
Temporal And Spatial Heterogeneity ◽  
A Current

We examined the propulsive movements and behaviour of young-of-the-year (YOY) brook trout (Salvelinus fontinalis) swimming in their natal streams. Our findings demonstrated that swimming performance was influenced by temporal and spatial heterogeneity in water flow. Pectoral fins were used commonly, even by individuals swimming in fast flowing water. There also was spatial variation in the speed attained for a given tail-beat frequency and amplitude. After controlling statistically for variation in spatial location, fork length, and tail-beat amplitude, the swimming speeds brook trout attained for a given tail-beat frequency were lower than values expected from laboratory studies of steady swimming but higher than values expected from laboratory studies of unsteady swimming in standing water. Trout holding station made short-term adjustments in tail-beat frequency also suggesting a degree of unsteady swimming. A field experiment demonstrated that introduction of a current-velocity refuge reduced swimming costs by 10%, on average, without affecting the frequency of foraging attempts made.

scholarly journals Effects of morphology on swimming performance in wild and laboratory crosses of brook trout ecotypes

2010 ◽  
Vol 24 (2) ◽  
pp. 310-321 ◽  
Author(s):  
Sébastien Rouleau ◽  
Hélène Glémet ◽  
Pierre Magnan
Keyword(s):  
Brook Trout ◽  
Swimming Performance

scholarly journals The influence of catch-and-release on mortality of Salminus brasiliensis (Cuvier, 1816)

2020 ◽  
Vol 80 (4) ◽  
pp. 705-710
Author(s):  
R. A. K. Sanches ◽  
P. A. Piana
Keyword(s):  
Weight Gain ◽  
Handling Time ◽  
Control Fish ◽  
Air Exposure ◽  
Fish Stocks ◽  
Catch And Release ◽  
Organic Growth ◽  
Individual Probability ◽  
The Individual ◽  
Salminus Brasiliensis

Abstract Catch-and-release (CR) angling has been used to assist management programs seeking to promote the conservation and recovery of some recreational fish stocks by decreasing mortality from fishing. However, without appropriate fish handling, this activity may cause damage and injuries to individual fish, causing mortality. Therefore, CR should be allowed under some circumstances that ensure higher rates of survival to achieve the goals of the conservation measures. Thus, we experimentally tested the CR effects on dourado (Salminus brasiliensis) by comparing caught-and-released fish (CR fish) with uncaught fish (control fish) in a pond and estimating individual mortality rates related to seven air exposure times (AET: 120 s, 240 s, 360 s, 480 s, 600 s, 720 s and 840 s). We also determined a safe limit for fish handling and investigated the length and weight gain variations. We found that an increase in AET affects fish survival and that the limit of handling time for this species was 546 s; after this threshold, the individual probability of death exceeds 5%. The length and weight gain of CR fish did not differ significantly from the control fish. We believe that CR is efficient for S. brasiliensis because it does not significantly impair their organic growth and causes little or no mortality if handling is performed properly; thus, it could be employed to assist conservation programs.

scholarly journals Molecular and physiological responses predict acclimation limits in juvenile brook trout (Salvelinus fontinalis)

2020 ◽  
Author(s):  
Theresa E. Mackey ◽  
Caleb T. Hasler ◽  
Travis Durhack ◽  
Jennifer D. Jeffrey ◽  
Camille J. Macnaughton ◽  
...  
Keyword(s):  
Heat Shock ◽  
Metabolic Rate ◽  
Brook Trout ◽  
Salvelinus Fontinalis ◽  
Transcript Abundance ◽  
Acclimation Temperature ◽  
Temperature Threshold ◽  
Plasma Parameters ◽  
Muscle Lactate ◽  
Air Exposure

AbstractBrook trout (Salvelinus fontinalis) populations are at risk of exposure to high water temperatures in the species’ native range in eastern North America. We quantified the physiological and molecular responses of juvenile brook trout to six acclimation temperatures that span the thermal distribution of the species (5, 10, 15, 20, 23, and 25°C). Using quantitative PCR (qPCR), we measured the mRNA transcript abundance of temperature-induced cellular stress genes to identify a potential sub-lethal temperature threshold for brook trout between 20–23°C. Brook trout exhibited an upregulation of stress-related genes (heat shock protein 90-beta; heat shock cognate 71 kDa protein; glutathione peroxidase 1) and a downregulation of transcription factors and osmoregulation-related genes (Na+/K+/2Cl− co-transporter-1-a; nuclear protein 1) at temperatures ≥20°C. We also used respirometry to assess the effects of the acclimation temperatures on oxygen consumption. Standard metabolic rate results indicated that energy expenditure was higher at temperatures ≥20°C. We then examined the effects of acclimation temperature on metabolic rate and blood plasma parameters in fish exposed to an acute exhaustive exercise and air exposure stress. Fish acclimated to temperatures ≥20°C exhibited elevated levels of plasma cortisol, muscle lactate, and plasma glucose after exposure to the acute stressors. After 24 h of recovery, fish showed longer metabolic recovery times at 15 and 20°C and cortisol levels remaining elevated at temperatures ≥20°C. Our findings suggest that brook trout may have a limited ability to acclimate to temperatures >20°C and increases in temperatures beyond 20°C may impact brook trout populations.

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