. The biology of marine animals. Marine animals; Physiology, Comparative. Diaphragm rrying fibular ted roove. Epistome Oesophagus Rectum l/en tral lip of mouth (b) Fig. Ciliary Feeding in an Endoproct Loxosomella (a) Lateral view of animal, showing direction of feeding currents; (b) ciliary currents, and direction of beat of lateral cilia on tentacles (tiny arrows) (from Atkins, 1932.) chamber, while light particles accumulate on the brachial membrane and are thrown into a brachial groove by the action of cilia on the brachial lip. From the groove the food particles are carried to the mou
. The biology of marine animals. Marine animals; Physiology, Comparative. Diaphragm rrying fibular ted roove. Epistome Oesophagus Rectum l/en tral lip of mouth (b) Fig. Ciliary Feeding in an Endoproct Loxosomella (a) Lateral view of animal, showing direction of feeding currents; (b) ciliary currents, and direction of beat of lateral cilia on tentacles (tiny arrows) (from Atkins, 1932.) chamber, while light particles accumulate on the brachial membrane and are thrown into a brachial groove by the action of cilia on the brachial lip. From the groove the food particles are carried to the mouth. Selection of particles, accordingly, is on the basis of size and weight (87). Molluscs. Ciliary feeding devices are highly developed in lamellibranchs and certain gastropods, in which they have independently evolved. They have been intensively studied, especially in lamellibranchs, and for detailed accounts the reader is referred to papers by Orton, Yonge and Atkins (see 111). Ciliary feeding in prosobranch gastropods has developed independently in at least six families. Of these the Calyptraeidae (Calyptraea and Crepidula) are the most specialized, and feed by sifting out diatoms and other fine plankton material by means of a modified ctenidium. In the sedentary slipper-limpet Crepidula fomicata, the mantle cavity is divided into two lateral chambers, one ventrolateral, the other dorso-lateral, by a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Nicol, J. A. Colin (Joseph Arthur Colin), 1915-. New York, Interscience Publishers
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