Biodegradable fishing gear: part of the solution to ghost fishing and marine pollution

Gilman, Eric

doi:10.1111/acv.12298

Cited by 14 publications

(5 citation statements)

References 8 publications

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“…Sea turtle researchers have tried a wide variety of techniques to mitigate bycatch via reduction in the catch rate or reducing mortality once caught (FAO 2010;Reinhardt et al 2018;Swimmer et al 2017Swimmer et al , 2020. Changes in hook type, size, and bait had significant effects on bycatch rate and hooking locations (Gilman andHuang 2017, Parga et al 2015). Other research areas may lead to development of net material and fishing lines that biodegrade more readily (Gilman 2016, Kim et al 2016, which could help alleviate the problem of abandoned and lost fishing gear.…”

Section: Discussionmentioning

confidence: 99%

“…Anecdotal reports by anglers in southeastern Oklahoma indicated that M. temminckii was not usually attracted by catfish stink baits (Heck 1998), perhaps another possibility for use with angling gear. Use of biodegradable lines in gear preparation could also help with the problem of abandoned and lost gear (Gilman 2016, Kim et al 2016).…”

Section: Discussionmentioning

confidence: 99%

“…Changes in hook type, size, and bait had significant effects on bycatch rate and hooking locations (Gilman and Huang 2017, Parga et al 2015). Other research areas may lead to development of net material and fishing lines that biodegrade more readily (Gilman 2016, Kim et al 2016), which could help alleviate the problem of abandoned and lost fishing gear. There has also been fisheries research on making ingested hooks that pass more easily through the digestive tract and corrode more rapidly when abandoned in the environment (McGrath et al 2011).…”

Section: Discussionmentioning

confidence: 99%

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Anthropogenic Threats to Alligator Snapping Turtles (Chelydridae: Macrochelys)

Shook,

Battaglia,

Enge

et al. 2023

Southeastern Naturalist

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With the conservation status of Macrochelys (alligator snapping turtles) being examined at the national level, our objective was to compile categorical data on threats from anthropogenic interactions. We included information from (1) author-collected anecdotes on human-turtle interactions and (2) radiographs to assess the prevalence of ingested fishing hooks. We placed 173 interactions involving 192 incidents into 9 IUCN threat categories and found bycatch involving fish hooks to be 4 times more numerous than the second-most numerous threat, turtle persecution. Fishing bycatch resulted in a high proportion of turtle mortalities (39%), and bycatch incidents in several cases preceded the highest-mortality threat (53%), persecution of individuals involving shooting or blunt trauma. We recommend fishing bycatch-mitigation measures and educational efforts to help conserve Macrochelys.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Anthropogenic Threats to Alligator Snapping Turtles (Chelydridae: Macrochelys)

Shook,

Battaglia,

Enge

et al. 2023

Southeastern Naturalist

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“…Studies on ghost fishing have historically focused on an array of marine fishing gears, including nets and traps, with rare situations occurring with similar gears in freshwater systems (Bullimore et al 2001; Matsuoka et al 2005; Gilman 2015; Spirkovski et al 2019). Nets and trap devices are effective at ghost fishing due in part to their construction, durability, and consequently their longevity (Gilman 2016). It is well established that once an organism becomes trapped in a gear, the organism can itself become an attractant to other organisms, leading to a cycle of take that can continue until the gear deteriorates (Smolowitz 1978; Kaiser et al 1996; Gilman 2016).…”

mentioning

confidence: 99%

“…Nets and trap devices are effective at ghost fishing due in part to their construction, durability, and consequently their longevity (Gilman 2016). It is well established that once an organism becomes trapped in a gear, the organism can itself become an attractant to other organisms, leading to a cycle of take that can continue until the gear deteriorates (Smolowitz 1978; Kaiser et al 1996; Gilman 2016). Larger marine gears such as nets and trawls gain most of the attention for ghost fishing, but theoretically, any submerged passive fishing gear is susceptible to ghost fishing postabandonment.…”

mentioning

confidence: 99%

Ghost Fishing by Abandoned Trotlines in a Simulated and Actual Reservoir

McDonald

Schlechte

Patterson

et al. 2022

N American J Fish Manag

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Ghost fishing is described as the continuation of fishing by abandoned fishing gear. The freshwater trotline, a passive gear that is routinely found abandoned, has never been evaluated for its ability to ghost fish. We tested the effectiveness of top-water set trotlines to ghost fish in (1) a simulated reservoir (i.e., hatchery ponds) and (2) an actual reservoir. In our simulated reservoir, we exposed Channel Catfish Ictalurus punctatus to baited and bare (unbaited) hooks of two hook styles (circle and "J") during the winter and summer seasons. We found that in the simulated reservoir, catch rates of baited hooks (mean = 18.4 fish per 24 hooks, standard error [SE] = 2.13) did not differ significantly from bare hooks (mean = 15.3 fish per 24 hooks, SE = 1.77), circle hooks were 1.5 times more effective at catching fish than "J" hooks (χ 2 = 4.19, df = 1, P = 0.041), and fish were retained longer in the winter (mean = 12.7 d, SE = 0.66) compared to the summer (mean = 2.8 d, SE = 0.21). We used the actual reservoir portion to examine the long-term fishability and the overall longevity of the trotline gear during the same seasons. Catch was highest during the first week and decreased with time. Trotlines caught mostly fish (81.6%), and most catch (>68%) occurred after the initial bait was lost. Winter-set trotlines captured more organisms (11.6 per 25-hook trotline; SE = 2.05) than summer-set trotlines (5.2; SE = 0.99). Trotline longevity was assessed by counting the fishable hooks through

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Tracking abandoned, lost or discarded fishing gears of anglers by analyzing magnet fishers’ catch

Neményi,

Nagy,

Hagyó

et al. 2024

Hydrobiologia

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Abandoned, lost, or discarded fishing gears (ALDFG) are major pollutants in water ecosystems, however, there is a serious lack of estimates on the loss of recreational fishing gears worldwide. To fill this gap, some recreationists like magnet fishers, who use neodymium magnets to retrieve metal items from water, can provide additional information. As they often remove ALDFG, we aimed to carry out the first social media analysis of their online content by searching ALDFG in their posts. During our work, we analyzed Hungarian magnet fishers’ posts, covering a total of 6 years from their initial activities on social media. In total, 2,889 posts were scanned of which 1,039 photos and 84 videos were analyzed. Magnet fishers caught 2,018 fishing gears while a total of 31 types of fishing gear were identified. Significant differences were found between flowing (n = 1,959, mean ± SD = 12.89 ± 16.51) and standing waters (n = 889, mean ± SD = 24.69 ± 31.39) in the numbers of fishing gears. Based on the results, we can conclude that ALDFG is a common freshwater pollutant in the country, and social media activities of magnet fishers can be used in detecting freshwater ALDFG containing metal.

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Biodegradable fishing gear: part of the solution to ghost fishing and marine pollution

Cited by 14 publications

References 8 publications

Anthropogenic Threats to Alligator Snapping Turtles (Chelydridae: Macrochelys)

Anthropogenic Threats to Alligator Snapping Turtles (Chelydridae: Macrochelys)

Ghost Fishing by Abandoned Trotlines in a Simulated and Actual Reservoir

Tracking abandoned, lost or discarded fishing gears of anglers by analyzing magnet fishers’ catch

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