The flapper skate, a critically endangered species, faces significant physiological challenges when subjected to catch-and-release angling in Scotland. This study, the first of its kind, offers vital insights into how angling impacts the health of these skates, which are a crucial part of marine ecosystems and have potential market access implications for local fisheries. As recreational fishing grows, understanding these impacts becomes essential to balance conservation efforts with economic interests.
In a groundbreaking study, researchers have documented the physiological responses of the endangered flapper skate to catch-and-release angling in Scotland. The investigation involved capturing 61 skates, assessing their health, and measuring various physiological parameters at different stages of the angling process. This research not only highlights the conservation concerns but also touches upon the potential market access issues related to sustainable fishing practices.
Physiological Disturbances Documented
Significant physiological disturbances were observed in the skates, including metabolic and respiratory acidosis. These conditions were exacerbated by warmer sea temperatures and prolonged fight times, indicating environmental factors play a crucial role. Such findings are critical for fishery management, as they highlight the need for practices that minimize stress and injury to preserve species and market viability.
Impact of Handling Procedures
During handling and tagging, skates exhibited changes in heart and respiratory rates, which were influenced by body size, ambient temperature, and time spent on the line. The study suggests that reducing fight times and exposure to heat could mitigate these stressors, aligning with best practices for sustainable fisheries and ensuring continued market access.
Injuries and infections were identified in a minority of the skates, with some attributed directly to previous angling encounters. This highlights the importance of refining angling techniques to reduce harm and support conservation efforts, which is crucial for maintaining the ecological balance and market sustainability.
Inferences and Recommendations
• Minimize fight times to reduce physiological stress.
• Implement shading and irrigation to decrease heat exposure.
• Encourage quick and careful handling to mitigate adverse effects.
The study’s results underscore the need for responsible angling practices, which are vital for the conservation of the flapper skate and other similar species. Implementing these recommendations could benefit both the ecosystem and the fishing industry’s market access, ensuring the long-term viability of these vital resources.
Original Article: Conserv Physiol. 2024 Nov 28;12(1):coae077. doi: 10.1093/conphys/coae077. eCollection 2024.
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