High-speed chases along the seafloor put Bryde's whales at risk of entanglement
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Recent changes in the South African marine ecosystem and the introduction of an experimental octopus fishery have resulted in an unsustainably high rate of fatal Bryde's whale entanglements. Using suction-cup attached bio-loggers, we identified a previously undescribed feeding behavior used by Bryde's whales to catch prey, and this behavior may make them susceptible to entanglement and mortality in bottom-mounted fishing gear. As they chase down their prey, inshore Bryde's whales sprint and maneuver along the seafloor for extended periods of time, making multiple direction changes, and reaching extraordinarily high swimming speeds. These findings assisted in the implementation of mandatory changes to octopus fishing gear that have drastically reduced the number of entanglements. The novel finding that Bryde's whales use high-speed chases near the seafloor to catch their prey highlights the value of using species-specific, behavioral information for making conservation recommendations.
| Originalsprog | Engelsk |
|---|---|
| Artikelnummer | e12646 |
| Tidsskrift | Conservation Science and Practice |
| Vol/bind | 4 |
| Udgave nummer | 5 |
| Antal sider | 9 |
| ISSN | 2578-4854 |
| DOI | |
| Status | Udgivet - 2022 |
Bibliografisk note
Funding Information:
The authors thank our skippers Shaun Tomlinson and Andrew Bell. Funding was provided by the Stanford University Terman Fellowship (Jeremy A. Goldbogen), the Percy Sladen Memorial Trust (Jacopo di Clemente and Gwenith S. Penry), the Society for Marine Mammalogy (Jacopo di Clemente and Gwenith S. Penry), the Torben and Alice Frimodts Fund (Jacopo di Clemente and Gwenith S. Penry), the National Research Foundation, South Africa (Amanda T. Lombard), Nelson Mandela University (Gwenith S. Penry), and the PADI foundation (Jacopo di Clemente, Gwenith S. Penry, and Paolo S. Segre).
Funding Information:
National Research Foundation, South Africa; Nelson Mandela University; PADI Foundation; Percy Sladen Memorial Trust; Society for Marine Mammalogy; Stanford University Terman Fellowship; Torben and Alice Frimodts Fund Funding information
Publisher Copyright:
© 2022 The Authors. Conservation Science and Practice published by Wiley Periodicals LLC on behalf of Society for Conservation Biology.
ID: 304365020