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Foraging strategy of the mudskipper Periophthalmus sobrinus Eggert in a Kenyan mangrove
Colombini, I.; Berti, R.; Nocita, A.; Chelazzi, L. (1996). Foraging strategy of the mudskipper Periophthalmus sobrinus Eggert in a Kenyan mangrove. J. Exp. Mar. Biol. Ecol. 197: 219-235. https://dx.doi.org/10.1016/0022-0981(95)00160-3
In: Journal of Experimental Marine Biology and Ecology. Elsevier: New York. ISSN 0022-0981; e-ISSN 1879-1697
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    ISW, Kenya, Tana Delta
    Periophthalmus sobrinus Eggert, 1935 [WoRMS]
Author keywords
    Mangrove system, mudskippers, Periophthalmus sobrinus, feeding activity, stomach contents
Auteurs  Top 
  • Colombini, I.
  • Berti, R.
  • Nocita, A.
  • Chelazzi, L.
Abstract
    The feeding behaviour of Periophthalmus sobrinus was studied in a population living along the channels of the Tana river delta. In November 1993 mudskippers were sampled every 2 tidal h for two consecutive spring and neap tides both during the day and night. The fishes were sexed and their stomach contents analysed. The results indicated that the mudskipper has a carnivorous diet and forages during both day and night although feeding greatly decreases after dark. Quantitative and qualitative differences in diet were found during the day and night of the two synodic and tidal phases. These differences were also demonstrable in the two sexes. The study showed that females of P. sobrinus are more selective than males and that differences between the two sexes may be related to reproductive condition. Furthermore, the mudskippers showed a tidal rhythm in feeding behaviour with peaks of activity around low tide (LT) on spring tides and around high tide (HT) on neap tides. Foraging activity seems to be influenced by the different spatial and temporal distributions of the mudskipper’s prey caused by synodic, tidal and die1 changes in the environment.
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