A5085068602- Marine and fisheries research
- Coral and Marine Ecosystems Studies
- Fish Ecology and Management Studies
- Identification and Quantification in Food
- Marine animal studies overview
- Marine Bivalve and Aquaculture Studies
- Fish Biology and Ecology Studies
- Maritime Navigation and Safety
- Fisheries and Aquaculture Studies
- Microplastics and Plastic Pollution
Ifremer
2015-2018
Marine Biodiversity Exploitation and Conservation
2015-2018
Centre National de la Recherche Scientifique
2015-2018
Institut de Recherche pour le Développement
2015-2018
Université de Montpellier
2018
Laboratoire des Symbioses Tropicales et Méditerranéennes
2014
Since the 1990s, massive use of drifting Fish Aggregating Devices (dFADs) to aggregate tropical tunas has strongly modified global purse-seine fisheries. For first time, a large data set GPS positions from buoys deployed by French purse-seiners monitor dFADs is analysed provide information on spatio-temporal patterns dFAD in Atlantic and Indian Oceans during 2007-2011. First, we select among four classification methods model that best separates "at sea" "on board" buoy positions. A random...
Since the mid-1990s, drifting Fish Aggregating Devices (dFADs), artificial floating objects designed to aggregate fish, have become an important mean by which purse seine fleets catch tropical tunas. Mass deployment of dFADs, as well massive use GPS buoys track dFADs and natural objects, has raised serious concerns for state tuna stocks ecosystem functioning. Here, we combine tracks from a large proportion French Indian Atlantic oceans with data observers aboard Spanish seiners logbook...
Tropical tuna purse-seine fishing vessels contribute to abandoned, lost or discarded (ALD) equipment by deploying large numbers of drifting Fish Aggregating Devices (dFADs). Here we analysed more than 80,000 dFAD trajectories (56,263 tracking buoys) in the Indian and Atlantic oceans from 2012 2018. We found that 40% ultimately drifted away grounds, becoming ALD. About 20% these dFADs passed within 50 km major ports, indicating port-based programmes could be effective collecting ALD at sea....
Abstract Fishers have intensively used drifting fish aggregating devices (DFADs) over the last three decades to facilitate their catch of tropical tunas. DFADs increase purse‐seine efficiency, potentially increasing tuna fishing mortality. They could also impacts on natural mortality and reproductive potential, assessing consequences presence at sea populations is a challenge. The use results in major number floating objects, which are spatially heterogeneous sea. To date, no converging...
Fishing on floating objects (FOBs) dominates catch in tropical tuna purse seine fisheries. One frequently cited advantage of deploying GPS-monitored FOBs is that the position information can be used for directed fishing to reduce search time tuna. However, seiners also fish foreign which not available. It critical quantify prevalence versus unmonitored understand how they impact effort and per unit effort. We analyzed French commercial, observer, FOB trajectory data Atlantic Indian oceans...