Article
Environmental Sciences
Dwi Ariyoga Gautama, Hendro Susanto, Mochammad Riyanto, Ronny I. Wahju, Michael Osmond, John H. Wang
Summary: Small-scale fisheries play an important role in the economic and cultural aspects of coastal areas worldwide. However, these fisheries often have high rates of unintentional catching of protected marine species. Recent studies have suggested that net illumination could be an effective method to reduce sea turtle bycatch in these fisheries. A controlled experiment conducted in a coastal gillnet fishery in Indonesia showed that net illumination significantly reduced sea turtle bycatch, particularly for green sea turtles, without affecting the overall catch and target species. Additionally, the study found that the market value of the catch increased when net illumination was used. These results suggest that net illumination could be a viable conservation tool for small-scale gillnet fisheries in Indonesia and Southeast Asia.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Fisheries
Giovanni Bearzi, Randall R. Reeves
Summary: Some marine mammals have modified their behavior to take advantage of the opportunities provided by fishing, leading to interactions that involve removing or damaging marketable organisms and bait. The use of the term "depredation" when referring to this behavior could reinforce misunderstandings and the belief that marine resources belong solely to humans. Alternative wording would prevent ambiguity and acknowledge the ecological roles of large marine predators.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Environmental Studies
Molly Scott, Edward Cardona, Kaylee Scidmore-Rossing, Mark Royer, Jennifer Stahl, Melanie Hutchinson
Summary: Changes to fishing gear configurations have the potential to decrease injury and mortality for non-target species in commercial fisheries. This two-part study found that switching from wire to monofilament leaders can reduce shark catch rates while maintaining catch rates of target species, and that monofilament leaders are more durable than wire leaders after soaking.
Article
Fisheries
Kadir capkin, Mehmet Cilbiz, Ferhat Demirol
Summary: Bycatch rates and selection criteria of narrow-clawed crayfish in Turkey's crayfish production centers were investigated. The study found that the bycatch rate was higher than the global marine bycatch rate and suggested improvements in selectivity and reduction of bycatch rate.
FISHERIES MANAGEMENT AND ECOLOGY
(2023)
Article
Fisheries
Robert J. Blackmore, Paul D. Winger, Pierre-Paul Bitton, Shannon Bayse, Kira Whittaker, William A. Montevecchi
Summary: Catch efficacy and bycatch are important factors in fishing gear sustainability. Gillnets are the most popular gear due to their efficiency, but they have issues with bycatch and low-quality catch. Handlines have advantages in terms of low capital investment, high-quality fish, low bycatch, and low carbon footprint. LED handline attachments were found to increase the catch rate of Atlantic cod in previous research, but our study found no significant effect. The use of green LEDs, however, was found to decrease the bycatch of Atlantic wolffish.
FISHERIES RESEARCH
(2023)
Article
Economics
Trevor C. Collier, Nancy Haskell, Aaron Mamula
Summary: This study examines effective resource management strategies in a spatial common pool resource experiment with two common regulations. The findings show that desirable resource harvests are lower under pooled limits than individual limits, and that information sharing can increase desirable resource harvests under individual limits, but exacerbate moral hazard under pooled limits.
Article
Fisheries
Julia Calderwood, C. Tara Marshall, Karl Haflinger, Joanna Alfaro-Shigueto, Jeffrey C. Mangel, David G. Reid
Summary: Avoiding unwanted catches and reducing discards is an important objective of fisheries management. Fishers can improve selectivity of their fishing operations through technical measures, gear modifications, and adjusting when and where to fish. Real-time information sharing within a fleet can help fishers avoid unwanted catches, but there is often reluctance to share catch information with others.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Article
Fisheries
Christian Hager, Juan C. Levesque, R. Jason Dickey, Jason E. Kahn
Summary: Bycatch is a significant issue in commercial fisheries globally, with protected species like Atlantic Sturgeon facing particular challenges. A study found that a modified gill-net design can substantially reduce Atlantic Sturgeon bycatch and increase Striped Bass catches.
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2021)
Article
Biodiversity Conservation
Amanda Kuepfer, Richard B. Sherley, Paul Brickle, Alexander Arkhipkin, Stephen C. Votier
Summary: Incidental mortality in trawl fisheries poses a serious threat to seabird sustainability. Strategic batch discarding is an effective mitigation measure to limit discard discharge, but supporting studies are rare. This study validates the efficacy of batch discarding as a mitigation measure in the Falkland Islands trawl fleet and highlights the importance of complete waste storage.
BIOLOGICAL CONSERVATION
(2022)
Article
Ecology
Gun -Ho Lee, Dae-Ho Song, Hyun-Young Kim
Summary: The study found that changing the direction of the exit hole of the excluder devices can reduce catch losses, increase fishermen's willingness to use finless porpoise excluder devices, and reduce bycatch.
REGIONAL STUDIES IN MARINE SCIENCE
(2022)
Article
Marine & Freshwater Biology
Rafael Schroeder, Alberto Teodorico Correia, Solange Dias Medeiros, Marcos Luiz Pessatti, Paulo Ricardo Schwingel
Summary: The implementation of a new refrigerated brine fish preservation method in the Brazilian sardine purse seine fishery in 2008 resulted in changes in fish quality, catch composition, and impact on non-target species. Analysis of catch reports and data revealed significant differences between vessels using different preservation methods in terms of catch volume and non-target species records.
Article
Fisheries
Miquel Palmer, Amaya Alvarez-Ellacuria, Vicenc Molto, Ignacio A. Catalan
Summary: The use of deep convolutional networks and statistical models in automatically estimating the number and mean length of fish caught in fisheries shows promise in improving the accuracy and efficiency of stock assessment and management, allowing for high-resolution monitoring of fishery dynamics.
FISHERIES RESEARCH
(2022)
Article
Marine & Freshwater Biology
Ugur Karadurmus, Ertug Duzgunes, Mehmet Aydin
Summary: The study revealed that the success rate and catch efficiency of deep water cast net fishing are significantly affected by different operational depths and fishing seasons. Due to high selectivity, low impact, and high survival rates of individuals, deep water cast net fishing was found to be beneficial for ecosystem-based fisheries management.
AQUATIC SCIENCES AND ENGINEERING
(2021)
Article
Anthropology
William Dantas Charles
Summary: The study conducted in a traditional fishing community in Brazil revealed the socioeconomic characteristics and evaluated fishery productivity through fishers' knowledge. Harvesting bivalve mollusks was found to be the most important fishery activity in the area. Fishers generally earned between half and two Brazilian minimum salaries monthly, with higher productivity in summer but higher wholesale prices in winter. The methodology used proved to be a powerful tool for estimating productivity in small-scale fisheries where obtaining data from fishers is difficult.
Article
Ecology
Dylan Hillis, Robert Gustas, Daniel Pauly, William W. L. Cheung, Anne K. Salomon, Iain McKechnie
Summary: Climate change is affecting marine fish populations globally, posing risks to society and economy. A study using indigenous fisheries catch records from archaeological sites in British Columbia, Canada, observed an increase in ancient mean temperature of the catch over the past 5,000 years.
ENVIRONMENTAL BIOLOGY OF FISHES
(2022)