Effect of salinity on the swimming behaviour of the estuarine calanoid copepod Eurytemora affinis
Identifieur interne : 009A07 ( Main/Exploration ); précédent : 009A06; suivant : 009A08Effect of salinity on the swimming behaviour of the estuarine calanoid copepod Eurytemora affinis
Auteurs : Laurent Seuront [Australie]Source :
- Journal of Plankton Research [ 0142-7873 ] ; 2006-09.
Descripteurs français
- Pascal (Inist)
- Wicri :
English descriptors
- KwdEn :
- Acartia tonsa, Behaviour, Behavioural, Behavioural strategies, Biol, Black bars, Castel, Circatidal, Circatidal activity, Columbia river estuary, Continuous culture, Copepod, Copepoda, Ecol, Endogenous rhythms, Error bars, Estuaries, Estuarine, Estuarine copepod eurytemora, Estuary, Eurytemora, Eurytemora affinis, Eurytemora affinis behaviour, Eurytemora males, Experimental chamber, Experimental container, Fractal, Fractal dimension, Fractal dimensions, Grey bars, Naylor, Nonovigerous females, Ovigerous, Ovigerous females, Path complexity, Plankton, Plankton research, Prog, Salinity, Salinity tolerance, Salinity treatments, Seine estuary, Seuront, Swimming, Vertical migration, Water column, White bars, Zooplankton.
- Teeft :
- Acartia tonsa, Behaviour, Behavioural, Behavioural strategies, Biol, Black bars, Castel, Circatidal, Circatidal activity, Columbia river estuary, Continuous culture, Copepod, Ecol, Endogenous rhythms, Error bars, Estuarine, Estuarine copepod eurytemora, Estuary, Eurytemora, Eurytemora affinis behaviour, Eurytemora males, Experimental chamber, Experimental container, Fractal, Fractal dimension, Fractal dimensions, Grey bars, Naylor, Nonovigerous females, Ovigerous, Ovigerous females, Path complexity, Plankton, Plankton research, Prog, Salinity, Salinity tolerance, Salinity treatments, Seine estuary, Seuront, Vertical migration, Water column, White bars, Zooplankton.
Abstract
The calanoid copepod, Eurytemora affinis, is the dominant zooplankton species in most of European and North American estuaries, and their population maintenance within an environment of net seaward flow has mainly been explained by endogenous rhythms of circatidal swimming activity. However, no attention has been paid to the potential link between the swimming behaviour of this species and salinity. The swimming behaviour of males, non-ovigerous females and ovigerous females from a continuous culture was investigated under different salinity conditions. Increase and decrease in salinity, respectively, increased and decreased the overall swimming activity of both males and non-ovigerous females. The complexity of the swimming paths of males and non-ovigerous females significantly increased with salinity. In contrast, ovigerous females were less motile and mainly sank. These observations suggest an endogenous behavioural adaptive strategy to salinity fluctuations and the intrinsic ability of E. affinis to undergo short-scale vertical migration triggered by changes in salinity. This supports field observations reporting increased abundance of E. affinis in the water column during flood tides and provides a behavioural basis for the maintenance of viable populations under net ouflow conditions.
Url:
DOI: 10.1093/plankt/fbl012
Affiliations:
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However, no attention has been paid to the potential link between the swimming behaviour of this species and salinity. The swimming behaviour of males, non-ovigerous females and ovigerous females from a continuous culture was investigated under different salinity conditions. Increase and decrease in salinity, respectively, increased and decreased the overall swimming activity of both males and non-ovigerous females. The complexity of the swimming paths of males and non-ovigerous females significantly increased with salinity. In contrast, ovigerous females were less motile and mainly sank. These observations suggest an endogenous behavioural adaptive strategy to salinity fluctuations and the intrinsic ability of E. affinis to undergo short-scale vertical migration triggered by changes in salinity. This supports field observations reporting increased abundance of E. affinis in the water column during flood tides and provides a behavioural basis for the maintenance of viable populations under net ouflow conditions.</div></front></TEI><affiliations><list><country><li>Australie</li></country></list><tree><country name="Australie"><noRegion><name sortKey="Seuront, Laurent" sort="Seuront, Laurent" uniqKey="Seuront L" first="Laurent" last="Seuront">Laurent Seuront</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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