A new model of particle retention and branchial sieve adjustment in filter-feeding bream (Abramis brama, Cyprinidae)
| Autor: | Wim Hoogenboezem, J.G.M. van der Boogaart, Jan W.M. Osse, Ferdinand A. Sibbing, Eddy H. R. R. Lammens, A. Terlouw |
|---|---|
| Přispěvatelé: | Limnological Institute |
| Jazyk: | angličtina |
| Rok vydání: | 1991 |
| Předmět: |
biology
Geometry Particle (ecology) Anatomy Aquatic Science biology.organism_classification law.invention Sieve Filter feeding Three dimensional architecture law Experimentele diermorfologie en celbiologie Cyprinidae Life Science Experimental Animal Morphology and Cell Biology Ecology Evolution Behavior and Systematics |
| Zdroj: | Canadian Journal of Fisheries and Aquatic Sciences 48 (1991) Canadian Journal of Fisheries and Aquatic Sciences, 48(1), 7-18. National Research Council of Canada Canadian Journal of Fisheries and Aquatic Sciences, 48, 7-18 |
| ISSN: | 0706-652X |
| DOI: | 10.1139/f91-002 |
| Popis: | A new model for filter feeding in bream (Abramis brama, Cyprinidae) is presented based on the three dimensional architecture of the branchial sieve. Transverse ridges on the upper surface of the gill arches form a system of channels in which food particles appear to be retained. These ridges are formed by a fleshy interconnection between the middle part of the gill arch and the bony parts of its gill rakers. Muscles attached to the rakers, present only on the lateral edge of the gill arch, indicate movability of the lateral bony raker element. If the fish is foraging on particles smaller than the channel diameter, movement of these gill rakers probably adjusts the sieve by reducing the channel diameter of the opposite channel. Selectivity of bream depends on available size classes of zooplanktons and changes in selectivity are attributed to adjustment of the branchial sieve. The channel model has been tested with feeding experiments and X-ray cinematography. The reconstructed paths of marked food particles show that particles follow the hypothesized path. Particle retention occurred mainly at the expected medial site of the arches. Our study strongly supports the channel model of particle retention. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|