Diel nektobenthic displacements of anoplopoma fimbria within the Barkley Canyon (NEPTUNE Canada)
2013 Annual Symposium of the Fisheries Society of the British Isles (FSBI Symposium 2013) Deep Sea Fish Biology, 8-11 July 2013, Glasgow
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2013-07
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dig-icm-es-10261-1333632022-04-28T10:20:32Z Diel nektobenthic displacements of anoplopoma fimbria within the Barkley Canyon (NEPTUNE Canada) Doya, C. Aguzzi, Jacopo Matabos, Marjolaine Company, Joan B. Costa, Corrado Mihály, Steven 2013 Annual Symposium of the Fisheries Society of the British Isles (FSBI Symposium 2013) Deep Sea Fish Biology, 8-11 July 2013, Glasgow Faunal exploration of deep sea is still at its early stage and recent advancements in multiparametric video-cabled observatory technology are enabling the faunal monitoring over unlimited period of time. That prolonged and continuous monitoring is required to avoid biases in population and biodiversity assessments due to massive populational displacement rhythms. In this study, we tested by video-monitoring, the interplay between day-night and internal tidal cycles in regulating the behavior of the North Pacific sablefish (Anoplopoma fimbria). We counted the number of animals in 50 s footages taken at 30 min intervals with 3 NEPTUNE cameras in Barkley canyon: one in the axis (984 m depth), and two on the wall of the canyon (896 m and 892 m depth, respectively). Data of pressure and current speed were also gathered at corresponding time. The Lomb-Scargle periodogram showed weaker but significant (p<0.001) 24-h periodicity in animal counts, along with a significant tidal signal only for one depth. Waveform analysis identified a nocturnal increment for this species. In waveforms, we related these increments with the phase of the day and the current speed (also analyzed by waveform analysis). Peaks in visual counts shifted in timing as function of the camera depths (i.e. between the lateral and deeper axis cameras). Also a general decrement in detections occurred as water speed increases. These results are discussed in relation to a new model of nektobenthic diel displacement of fishes within the canyon axis Peer Reviewed 2016-06-13T10:26:33Z 2016-06-13T10:26:33Z 2013-07 2016-06-13T10:26:34Z póster de congreso http://purl.org/coar/resource_type/c_6670 2013 Annual Symposium of the Fisheries Society of the British Isles (2013) http://hdl.handle.net/10261/133363 http://www.fsbi.org.uk/conference2013/programme/ Sí none |
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2013 Annual Symposium of the Fisheries Society of the British Isles (FSBI Symposium 2013) Deep Sea Fish Biology, 8-11 July 2013, Glasgow |
| format |
póster de congreso |
| author |
Doya, C. Aguzzi, Jacopo Matabos, Marjolaine Company, Joan B. Costa, Corrado Mihály, Steven |
| spellingShingle |
Doya, C. Aguzzi, Jacopo Matabos, Marjolaine Company, Joan B. Costa, Corrado Mihály, Steven Diel nektobenthic displacements of anoplopoma fimbria within the Barkley Canyon (NEPTUNE Canada) |
| author_facet |
Doya, C. Aguzzi, Jacopo Matabos, Marjolaine Company, Joan B. Costa, Corrado Mihály, Steven |
| author_sort |
Doya, C. |
| title |
Diel nektobenthic displacements of anoplopoma fimbria within the Barkley Canyon (NEPTUNE Canada) |
| title_short |
Diel nektobenthic displacements of anoplopoma fimbria within the Barkley Canyon (NEPTUNE Canada) |
| title_full |
Diel nektobenthic displacements of anoplopoma fimbria within the Barkley Canyon (NEPTUNE Canada) |
| title_fullStr |
Diel nektobenthic displacements of anoplopoma fimbria within the Barkley Canyon (NEPTUNE Canada) |
| title_full_unstemmed |
Diel nektobenthic displacements of anoplopoma fimbria within the Barkley Canyon (NEPTUNE Canada) |
| title_sort |
diel nektobenthic displacements of anoplopoma fimbria within the barkley canyon (neptune canada) |
| publishDate |
2013-07 |
| url |
http://hdl.handle.net/10261/133363 |
| work_keys_str_mv |
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