Fight and air exposure times of caught and released salmonids from the South Fork Snake River

Roth, Curtis J.; Schill, Daniel J.; Quist, Michael C.

doi:10.1016/j.fishres.2018.01.007

Cited by 15 publications

(24 citation statements)

References 20 publications

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“…Our finding that most Idaho anglers exposed caught‐and‐released steelhead to <30 s of air concurs with previous studies on trout anglers, which also showed that, on average, fish were exposed to <30 s of air before being released (Lamansky and Meyer ; Roth et al. , ). In contrast, our average fight time of 120 s was two‐ to threefold longer than that found in previous studies on trout that reported mean fight times of 53 s (Lamansky and Meyer ) and 40 s (Roth et al.…”

Section: Discussionsupporting

confidence: 92%

“…In contrast, our average fight time of 120 s was two‐ to threefold longer than that found in previous studies on trout that reported mean fight times of 53 s (Lamansky and Meyer ) and 40 s (Roth et al. , ). This disparity was most likely related to the size of the fish being caught (i.e., adult steelhead are an order of magnitude heavier than most resident adult trout), though fight times for Cutthroat Trout O. clarkii in Yellowstone National Park (102 s: Schill et al.…”

Section: Discussioncontrasting

confidence: 92%

“…The results of this study add to previous work (Lamansky and Meyer ; Roth et al. , ) suggesting that anglers in many Idaho fisheries already minimize stress on caught‐and‐released fish by fighting fish quickly and minimizing air exposure times. Even when anglers photographed their catch, the air exposure times we observed were not consistent with values expected to result in reduced survival.…”

Section: Discussionsupporting

confidence: 77%

“…In the same study, fight times averaged 53 s. Another recent study showed that trout caught and released were exposed to air for an average of 19 s, while fight times averaged 40 s (Roth et al. ). Although such fight and air exposure times are unlikely to impact the mortality of caught‐and‐released trout, the extent to which these findings relate to sport fisheries for anadromous fishes is unknown, particularly regarding the larger fish size and potentially longer fight times.…”

mentioning

confidence: 68%

“…; Lamansky and Meyer ; Roth et al. , ). Furthermore, the test fish were cannulated and sampled for blood up to five times throughout the experiment, which may have exacerbated treatment effects.…”

Section: Discussionmentioning

confidence: 99%

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Air Exposure, Fight Times, and Deep‐Hooking Rates of Steelhead Caught in Idaho Fisheries

Chiaramonte

Meyer

Whitney

et al. 2018

N American J Fish Manag

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Potential effects of air exposure and fight times on fish caught and released by anglers have been increasingly studied in recent years, yet little is known about how long anglers actually fight the fish and expose them to air before releasing them. In the present study, air exposure and fight times were measured for anglers catching and releasing fish in popular steelhead Oncorhynchus mykiss fisheries in Idaho, and other relevant factors were also recorded such as fishing gear (fly or nonfly), occurrence of anglers photographing their catch, landing method (with net or by hand), and whether the fish was hooked deeply. A total of 432 steelhead were observed being landed, from which 395 fight times and 251 air exposure times were recorded. The longest interval of air exposure for all steelhead caught and released averaged 28.1 s (95% CI, 25.9–31.3 s), and the vast majority of anglers (88%) held steelhead out of water for less than 60 s. Air exposure was not significantly different by gear type but was estimated to be 1.69 times longer if the angler took a photo of their catch; anglers using flies were 58% more likely to photograph their catch than nonfly anglers. Fight time averaged 130 s (95% CI, 119.3–140.7 s) and differed significantly by gear type, with fly anglers taking an estimated 1.54 times longer to land fish than nonfly anglers. Deep‐hooking rates were 0% for fly and bait and/or jig terminal tackle and 1% for lures. In the context of previous studies that have measured postrelease mortality of caught‐and‐released salmonids, the effects of these fight and air exposure times and deep‐hooking rates in Idaho steelhead fisheries are likely negligible.

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Section: Discussionsupporting

confidence: 92%

Section: Discussioncontrasting

confidence: 92%

Section: Discussionsupporting

confidence: 77%

mentioning

confidence: 68%

Section: Discussionmentioning

confidence: 99%

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Air Exposure, Fight Times, and Deep‐Hooking Rates of Steelhead Caught in Idaho Fisheries

Chiaramonte

Meyer

Whitney

et al. 2018

N American J Fish Manag

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Postrelease Mortality of Angled Tarpon in Puerto Rico

et al. 2023

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Tarpon Megalops atlanticus is a popular and economically important inshore sport fish in Puerto Rico, and the pursuit of this species by local anglers and tourists contributes to the economy. This species is managed as a no-take fishery, which aims to preserve populations by catching and releasing fish that would otherwise be subjected to harvest and removal from the population. The approach assumes minimal mortality and/or reduced fitness of released fish, yet the process of angling can produce many sublethal side effects or direct mortality. In this study, charter angling for Tarpon in the San Juan lagoon system in Puerto Rico was examined to determine postrelease mortality. Angled fish were externally tagged with acoustic transmitters and relocated periodically to determine the fate after release. Postrelease mortality was at least 4.5% (two fish observed dead) and at most 18.2% (observed dead plus classified dead based on lack of movement; confidence interval [CI] = 7.5-28.9%). Some tag loss was observed, which could have artificially elevated classified mortality estimates. Potential factors that contribute to mortality are discussed and compared to the literature. Hook type, gear action, landing procedures, and air exposure were key areas of possible improvement. Recommendations to minimize fish harm during angling include the use of heavier action gear to reduce fight time, a circle hook requirement for live bait to reduce deep hooking, maintaining fish in the water during landing and photography, and limiting air exposure to 2 min or less if fish are removed from the water.

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Effects of Air Exposure in Summer on the Survival of Caught‐and‐Released Salmonids

Roth

Schill

Quist

et al. 2018

N American J Fish Manag

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Despite the success of catch-and-release regulations, exposing fish to air during release has emerged as a growing concern over the past two decades. We evaluated the effect of air exposure during midsummer on survival of Yellowstone Cutthroat Trout Oncorhynchus clarkii bouvieri, Bull Trout Salvelinus confluentus, and Rainbow Trout O. mykiss exposed to catch-and-release angling. Fish were sampled by angling on Palisades Creek (August 2016), Sawmill Creek, and the Main Fork of the Little Lost River, Idaho (July−August 2017). After capture, fish were kept underwater while they were measured and individually tagged. Anglers, in groups of two to four, caught study fish and gave them an air exposure treatment of 0, 30, or 60 s. Single-pass backpack electrofishing was then used to recapture tagged fish and estimate relative survival. In total, 328 Yellowstone Cutthroat Trout were sampled (0 s: n = 110; 30 s: n = 110; 60 s: n = 108), 278 Bull Trout (0 s: n = 92; 30 s: n = 94; 60 s: n = 92), and 322 Rainbow Trout (0 s: n = 103; 30 s: n = 106; 60 s: n = 113). The majority of fish were caught using artificial flies (≥92%) and were hooked in the corner of the mouth, lower jaw, or upper jaw (≥78%) in all three species. No difference in survival was observed among air exposure treatments for all three species. Results from the present study along with those from prior field studies of air exposure times during angling suggest that mortality from exposing fish to air for ≤60 s is not likely a population-level concern in catch-and-release fisheries for these species.Catch-and-release angling regulations are one regulatory tool available for fisheries managers (Isermann and Paukert 2010) and are implemented for a variety of reasons such as to prevent the consumption of contaminated fish (Carline et al. 1991), protect species that are easily overexploited (Sullivan 2003), improve the quality of the fishery (Perry et al. 1995; Schneider and Lockwood 2002), and for social reasons (Schill and Scarpella 1997). When

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Fight and air exposure times of caught and released salmonids from the South Fork Snake River

Cited by 15 publications

References 20 publications

Air Exposure, Fight Times, and Deep‐Hooking Rates of Steelhead Caught in Idaho Fisheries

Air Exposure, Fight Times, and Deep‐Hooking Rates of Steelhead Caught in Idaho Fisheries

Postrelease Mortality of Angled Tarpon in Puerto Rico

Effects of Air Exposure in Summer on the Survival of Caught‐and‐Released Salmonids

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