Early insights into the seasonal and spatial distribution of white sharks (Carcharodon carcharias) along the Maine coastline DOI Creative Commons
Matthew M. Davis, Megan V. Winton, John A. Mohan

et al.

Frontiers in Marine Science, Journal Year: 2025, Volume and Issue: 12

Published: March 3, 2025

While significant progress has been made to characterize life history patterns, movement ecology, and regional estimates of abundance white sharks ( Carcharodon carcharias ) in the Western North Atlantic (WNA), patterns spatial distribution remain relatively unknown northern Gulf Maine. In this study, we utilize data collected from multiple acoustic telemetry projects 2012-2023 assess spatiotemporal along sections Maine coastline offshore waters. Acoustic receivers were deployed each year 2012-2019 (mean number ± SD: 11 4), effort increased following first-ever shark related fatality 2020 (2020-2023: 40 15). total, 107 tagged by researchers WNA detected, with majority (n = 90) detected shallow (<50 m depth) waters post-2019. Reflective population at-large, total length individuals ranged 2.1 4.9 m, most estimated be juvenile or subadult stages. White between months May-December, peaks July September, observed close proximity several Maine’s western beaches islands/outcroppings, higher numbers at sites eastern Casco Bay. Although overall quantity detections was low when compared aggregation other regions, study provides baseline information on presence species future research should include expanded receiver coverage use additional tagging technologies, contributes early insights for informing marine planning, fisheries management, conservation strategies region.

Language: Английский

Early insights into the seasonal and spatial distribution of white sharks (Carcharodon carcharias) along the Maine coastline DOI Creative Commons
Matthew M. Davis, Megan V. Winton, John A. Mohan

et al.

Frontiers in Marine Science, Journal Year: 2025, Volume and Issue: 12

Published: March 3, 2025

While significant progress has been made to characterize life history patterns, movement ecology, and regional estimates of abundance white sharks ( Carcharodon carcharias ) in the Western North Atlantic (WNA), patterns spatial distribution remain relatively unknown northern Gulf Maine. In this study, we utilize data collected from multiple acoustic telemetry projects 2012-2023 assess spatiotemporal along sections Maine coastline offshore waters. Acoustic receivers were deployed each year 2012-2019 (mean number ± SD: 11 4), effort increased following first-ever shark related fatality 2020 (2020-2023: 40 15). total, 107 tagged by researchers WNA detected, with majority (n = 90) detected shallow (<50 m depth) waters post-2019. Reflective population at-large, total length individuals ranged 2.1 4.9 m, most estimated be juvenile or subadult stages. White between months May-December, peaks July September, observed close proximity several Maine’s western beaches islands/outcroppings, higher numbers at sites eastern Casco Bay. Although overall quantity detections was low when compared aggregation other regions, study provides baseline information on presence species future research should include expanded receiver coverage use additional tagging technologies, contributes early insights for informing marine planning, fisheries management, conservation strategies region.

Language: Английский

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