Combining electronic tag data and fish harvesters’ knowledge to identify ocean management concerns

Marshall, Rachel C.; Fisher, Jonathan A. D.; Gatti, Paul; Carruthers, Erin H.; Robert, Dominique; Bris, Arnault Le

doi:10.1016/j.marpol.2022.105393

Cited by 3 publications

(2 citation statements)

References 44 publications

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“…Time series from electronic tags can reveal unique patterns of depth use that are indicative of potential spawning behaviors, such as the oscillatory diving patterns with prolonged surface intervals exhibited by bluefin tuna (Block et al, 2001), the rapid rises off the seafloor in Pacific halibut (Seitz et al, 2005), or the periodic short‐term shallow water activity in small spotted catsharks (Wearmouth et al, 2013). When combined with reconstructed migratory tracks, these patterns can help reveal unknown spawning areas (Gatti et al, 2020) and ultimately inform on the risks of interaction with fisheries or other ocean uses (Marshall et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Reproductive behavior of Atlantic halibut (Hippoglossus hippoglossus) interpreted from electronic tags

Marshall

Fisher

Einfeldt

et al. 2023

Journal of Fish Biology

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Reproductive timing, location, and behavior are important characteristics that determine marine population dynamics, structure, and resilience to threats, including fishing and climate change. It is challenging to evaluate factors driving variability in these reproductive traits in wild fishes because of the difficulty observing individuals in their natural environments. In the present study, we used high‐resolution depth, temperature, and acceleration time series recorded by pop‐up satellite archival tags to (1) identify and characterize patterns in depth and acceleration that may be indicative of spawning events in large Atlantic halibut (Hippoglossus hippoglossus), and (2) estimate the effects of individual traits (body size and sex) and environmental factors (location and temperature) on spawning time and frequency. Unique rapid rises observed in the winter depth profiles were interpreted as spawning events. The initiation of the first presumed spawning rise was negatively correlated to water temperature experienced during the prespawning season, suggesting that currently increasing water temperature in the Gulf of St. Lawrence may induce phenological change in halibut spawning time. The number of rises of batch‐spawning females was unrelated to female body size. The present study demonstrates how electronic tagging can be used for in‐depth characterization of timing, location, and behaviors associated with spawning in a large flatfish species. Such information can inform spatiotemporal management and conservation measures aiming to protect species from directed fishing and by‐catch during spawning.

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Section: Introductionmentioning

confidence: 99%

Reproductive behavior of Atlantic halibut (Hippoglossus hippoglossus) interpreted from electronic tags

Marshall

Fisher

Einfeldt

et al. 2023

Journal of Fish Biology

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“…Nevertheless, marine biodiversity faces myriad challenges stemming from various human activities, such as overfishing, wastewater discharge into oceans, and oil spills [4][5][6]. Hence, the formulation of conservation strategies is indispensable to effectively protect marine biodiversity [7,8]. The efficacy of these conservation strategies largely hinges on routine monitoring of habitat utilization, movement patterns, and behaviors of marine species across daily to seasonal timescales.…”

Section: Introductionmentioning

confidence: 99%

An Underwater Triboelectric Biomechanical Energy Harvester to Power the Electronic Tag of Marine Life

Liu,

Du,

et al. 2023

JMSE

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Implantable electronic tags are crucial for the conservation of marine biodiversity. However, the power supply associated with these tags remains a significant challenge. In this study, an underwater flexible triboelectric nanogenerator (UF-TENG) was proposed to harvest the biomechanical energy from the movements of marine life, ensuring a consistent power source for the implantable devices. The UF-TENG, which is watertight by the protection of a hydrophobic poly(tetrafluoroethylene) film, consists of high stretchable carbon black-silicone as electrode and silicone as a dielectric material. This innovative design enhances the UF-TENG’s adaptability and biocompatibility with marine organisms. The UF-TENG’s performance was rigorously assessed under various conditions. Experimental data highlight a peak output of 14 V, 0.43 μA and 38 nC, with a peak power of 2.9 μW from only one unit. Notably, its performance exhibited minimal degradation even after three weeks, showing its excellent robustness. Furthermore, the UF-TENG is promising in the self-powered sensing of the environmental parameter and the marine life movement. Finally, a continuous power supply of an underwater temperature is achieved by paralleling UF-TENGs. These findings indicate the broad potential of UF-TENG technology in powering implantable electronic tags.

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Fisheries measures protect European seabass groups with distinct habitat use differently

Goossens,

Villagra,

De Putter

et al. 2023

ICES Journal of Marine Science

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We investigated the movements of European seabass, Dicentrarchus labrax, to understand habitat use and connectivity to evaluate how individual seabass are protected by the spatiotemporal fisheries restrictions in place. We tagged seabass with acoustic transmitters in a study area in the Port of Zeebrugge (Belgium) in the southern North Sea. The 370,200 detections of 57 seabass in the study area revealed high residency in the period from late March–May to September–November, as well as high site fidelity (70.7%). Whereas the majority of seabass left the area in winter, 13 seabass stayed in the harbour experiencing temperatures as low as 2.8°C. Two groups of seabass were identified having different core movement areas in the inner and outer harbours, although movement between the two areas was possible. The distinct differences in habitat use between these groups resulted in a significantly different level of exposure to fisheries under the same policy framework. By quantifying the level of protection of seabass, based on the spatiotemporal fisheries management in place, our study underlines the importance of taking into account movement behaviour when evaluating conservation measures.

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Combining electronic tag data and fish harvesters’ knowledge to identify ocean management concerns

Cited by 3 publications

References 44 publications

Reproductive behavior of Atlantic halibut (Hippoglossus hippoglossus) interpreted from electronic tags

Reproductive behavior of Atlantic halibut (Hippoglossus hippoglossus) interpreted from electronic tags

An Underwater Triboelectric Biomechanical Energy Harvester to Power the Electronic Tag of Marine Life

Fisheries measures protect European seabass groups with distinct habitat use differently

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