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Temporal patterns of movement in juvenile flatfishes and their predators: underwater television observations
Burrows, M.T.; Gibson, R.N.; Robb, L.; Comely, C.A. (1994). Temporal patterns of movement in juvenile flatfishes and their predators: underwater television observations. J. Exp. Mar. Biol. Ecol. 177(2): 251-268. http://dx.doi.org/10.1016/0022-0981(94)90240-2
In: Journal of Experimental Marine Biology and Ecology. Elsevier: New York. ISSN 0022-0981; e-ISSN 1879-1697
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| Trefwoorden |
Crangon crangon (Linnaeus, 1758) [WoRMS]; Gadus morhua Linnaeus, 1758 [WoRMS]; Pleuronectes platessa Linnaeus, 1758 [WoRMS]
Marien/Kust |
| Author keywords |
Activity pattern; Cod; Crangon; Diurnal migration; Plaice; Tidal migration; Under-water television |
| Auteurs | | Top |
- Burrows, M.T.
- Gibson, R.N.
- Robb, L.
- Comely, C.A.
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| Abstract |
Underwater television cameras were used to observe the movements of bottom-living animals in the intertidal and shallow subtidal zones of a sandy shore over sixteen 24-h periods in the summers of (1991) and (1992). Juvenile (O-group) flatfishes, predominantly Pleuronectes platessa L. with some Limanda limanda (L.), were only seen moving on the bottom by day, with most observed at high water and just before sunset. Their movements were directed offshore in the morning and onshore in the afternoon. They also tended to move onshore with the flood tide and offshore with the ebb. These fishes may use midwater swimming for intertidal migration by night because none was seen moving on the bottom at night. Potential predators of O-group flatfishes, cod Gadus morhua L., crab Carcinus maenas (L.) and the brown shrimp Crangon crangon (L.), were most often seen moving on the bottom at night. Crangon, Carcinus and I-group flatfishes were seen in similar numbers in the subtidal and intertidal zones, while O-group flat-fishes, cod and hermit crabs Pagurus bernhardus (L.) were seen much more frequently under the subtidal camera. |
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