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STRICKLER LAB DAPHNIA |
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For cladoceran zooplankters the notion of "filter feeding" still stands. Fryer (1991, Summary p. 2) reviewed the literature, performed extensive morphological and mechanical studies and concluded: “Notwithstanding claims to the contrary, the filter plates of trunk limbs 3 and 4 are correctly designated as such and serve as filters.” We take above citation and additional notions from Fryer's contribution as our working hypotheses and use novel techniques to test whether a significant part of the feeding current passes through a "filter"; and particles get caught on the "filters" due to their size being larger than the spacing of the setules. |
Alcaraz,
M., G.-A. Paffenhöfer and J.R. Strickler. 1980. Catching the algae:
A first account of visual observations on filter-feeding calanoids. In:
W.C. Kerfoot [Ed.], Evolution and Ecology of Zooplankton Communities. Special
Symposium III American Society of Limnology and Oceanography. Univ. Press
of New England, 241-248. Fryer, G. 1991 . Functional morphology and adaptive radiation of Daphniidae (Branchiopoda: Anomopoda). Phil. Trans. R. Soc. Lond. B 331: 1-99. Gerritsen, J. and K.G. Porter. 1987. The role of surface chemistry in filter feeding by zooplankton. Science 216:1225-1227. Strickler, J.R. 1984. Concluding remarks. In: D.G. Meyers and J.R. Strickler [Eds.], Trophic Interactions within Aquatic Ecosystems, Westview Press, 449-460. Strickler, J.R. and J.- S. Hwang. 1999. Matched Spatial Filters in Long Working Distance Microscopy of Phase Objects. In: Cheng, P.C., Hwang, P.P., Wu, J.L., Wang, G. and Kim H. [Eds.] Focus on Modern Microscopy. World Scientific Publishing Inc., River Edge, NJ. |
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