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| Dagorn, L; Pincock, D; Girard, C; Holland, K; Taquet, Marc; Sancho, G; Itano, D; Aumeeruddy, R. |
| Automated acoustic receivers are now widely used by biologists to study the behavior of fish. However, currently available acoustic receivers require physical recovery of the units to download stored data. Such operation is often difficult in remote study areas like in the open ocean. We present a new satellite-linked acoustic receiver (Vemco VR3-Argos) that allows downloading data through a satellite uplink (Argos). The VR3-Argos can last up to one year, sending GPS positions and tag data at regular time intervals. We illustrate the advantages of this new technology with tagging data from 121 fish of seven species (yellowfin tuna, bigeye tuna, skipjack tuna, wahoo, dolphinfish, silky shark and oceanic triggerfish) caught and released around drifting fish... |
| Tipo: Text |
Palavras-chave: Pelagic fish; Tuna; Fish telemetry; Acoustic receiver; FAD. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3731.pdf |
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| Taquet, Marc; Dagorn, L; Gaertner, J; Girard, C; Aumerruddy, R; Sancho, G; Itano, D. |
| To study the behavior of dolphinfish (Coryphaena hippurus) around drifting Fish Aggregating Devices (FADs), we tagged individuals with long-lived, coded sonic transmitters and attached automated sonic receivers to drifting FADs in two regions of the Western Indian Ocean. Among the three tagging methods used in this study (surgery, external hooks, underwater bait without capture), the latest resulted in residence times significantly shorter than the other ones, likely due to regurgitation. Dolphinfish tagged with the two other methods usually stayed several days associated to FADs (Kaplan-Meier survival analysis 5.09 days, mean 6.25 days, SD 4.39 days, maximum 15.26 days), drifting with them. There was no significant difference in the residence times of... |
| Tipo: Text |
Palavras-chave: Indian Ocean; Meeting point; Ecological trap; Behavior of fish; Ultrasonic telemetry; Acoustic tagging; FAD; Dolphinfish. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3733.pdf |
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