Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Effect of light intensity on vertical migrations of the tree crab, Sesarma leptosome Hilgendorf (Decapoda, Grapsidae)
Vannini, M.; Cannicci, S.; Ruwa, K. (1995). Effect of light intensity on vertical migrations of the tree crab, Sesarma leptosome Hilgendorf (Decapoda, Grapsidae). J. Exp. Mar. Biol. Ecol. 185(2): 181-189. dx.doi.org/10.1016/0022-0981(94)00143-2
In: Journal of Experimental Marine Biology and Ecology. Elsevier: New York. ISSN 0022-0981; e-ISSN 1879-1697, meer
|  |
| Trefwoorden |
Sesarma leptosoma Hilgendorf, 1869 [WoRMS]
Marien/Kust |
| Author keywords |
Grapsidae, light intensity reaction, tree-climbing, vertical migration |
| Abstract |
Sesarma leptosoma is a mangrove crab that lives among the mangrove roots and migrates twice a day to the canopy to feed on leaves and leaf-buds. An experiment was performed by covering the whole root system of mangrove trees with white and black tents, thus differentially reducing the light intensity reaching the crabs, in order to investigate whether the light level could be responsible for the onset of the morning upward migration. A correlation was found between the light reduction induced by the tents of different colours and the delay in the crab migration departure. Reaction to a light threshold is an efficient mechanism to synchronise perfectly the activity of a whole crab population. The questions under discussion are why the migration should start in such a synchronised and explosive way and, more generally, why these intertidal crabs should regulate their migratory activity with the light level instead of the level of the tide. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
