On behalf of my co-authors, I am pleased to share our recently published 
article regarding a collaborative effort to successfully trial on-demand 
fishing gear in the Northeast US under normal fishing conditions. We 
particularly acknowledge the involvement and input from the commercial 
fishermen whose willingness to trial the gear and provide input to improve its 
efficacy were instrumental in the success of this project.

Working with Northeastern United States lobster harvesters to develop acoustic 
trap retrieval in place of buoys and persistent vertical lines to reduce whale 
entanglements:

Abstract
Vertical buoy lines (VBLs) between surface markers and bottom fishing gear 
frequently entangle large whales. These lethal and sublethal entanglements 
inhibit North Atlantic right whale (Eubalaena glacialis) recovery. 
Consequently, the use of persistent VBLs in situations of high entanglement 
risk off the east coasts of the USA and Canada is periodically prohibited. On 
demand, acoustic recovery systems make it possible to remove persistent VBLs, 
reducing entanglement risk, and potentially allowing fisheries to operate in 
such areas. To address concerns about performance, reliability, and safety, we 
evaluated numerous on-demand systems under normal fishing conditions. In 2020, 
conservationists, scientists, engineers, and lobster harvesters designed an 
experiment to trial on-demand systems in the New England offshore fisheries, 
using an open and honest dialogue while maintaining the confidentiality of data 
such as fishing locations. Between 2020 and 2023, 38 captains and their crews 
completed 5798 hauls using 431 on-demand units representing 10 different 
prototypes from multiple manufacturers. The geographic area expanded from 
limited offshore areas in 2020 to inshore, nearshore, and offshore waters in 
four different lobster management areas in 2022 and 2023. Trawl lengths ranged 
from 1 to 100 traps per trawl. Recovery success increased from 64% to 90% of 
hauls through the trials, although challenges remain, especially when fishing 
in deep waters or high current and tide locales. A parallel study is underway 
in Canada. The ability to ensure sustainable fisheries while significantly 
reducing entanglement risk is becoming a reality, with snow crabs and lobsters 
being sold in Canada and lobsters and Jonah crabs in the USA that were caught 
using experimental fishing permits and on-demand systems primarily in areas 
where persistent VBLs are seasonally prohibited for whale conservation.

The full paper is available as an open access doc at 
https://academic.oup.com/icesjms/article/82/2/fsaf015/8019485


Regina Asmutis‑Silvia​​​​
Executive Director
WDC North America
Pronouns: she, her, hers
WDC, Whale and Dolphin Conservation
Telephone:
+1 508 746 2522<tel:+1%20508%20746%202522>
whales.org<https://whales.org/>



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