|Effect of food composition on egg production and hatching success rate of two copepod species (Calanoides carinatus and Rhincalanus nasutus) in the Benguela upwelling system|Irigoien, X.; Verheye, H.M.; Harris, R.P.; Harbour, D. (2005). Effect of food composition on egg production and hatching success rate of two copepod species (Calanoides carinatus and Rhincalanus nasutus) in the Benguela upwelling system. J. Plankton Res. 27(8): 735-742. hdl.handle.net/10.1093/plankt/fbi046
In: Journal of Plankton Research. Oxford University Press: New York,. ISSN 0142-7873, more
|Authors|| || Top |
- Irigoien, X.
- Verheye, H.M.
- Harris, R.P.
- Harbour, D.
We have analysed the daily egg production (EPR) and hatching success rates of the calanoid copepods Calanoides carinatus and Rhincalanus nasutus as a function of nano- and microplankton concentration and composition in the northern Benguela upwelling system off Namibia. Food concentration explained 55% (R. nasutus) to 62% (C. carinatus) of the EPR variability. We found no relation between the residuals of the food concentration–EPR regression and the percentage of the different taxonomic components of the nano- and microplankton. Nor was there a relation with the proportion of the diatom Skeletonema costatum that dominated the major blooms or with the number of nano- and microplankton species. We conclude that food quality differences could not be attributed to the relative composition of microplanktonic particles of the different groups (i.e. taxonomic composition).