. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 302 REPORTS FROM THE MBL GENERAL SCIENTIFIC MEETINGS. comparative studies of pinniped thermoregulation and anat- omy. Donald Schrank (Kenyon College) was a visiting student at the Boston University Marine Program. We thank Gillian Sanders. Nathalie Ward. Sentiel Rommel. John Nicholas. Winslow Schrank, Elaine Close, and others at the Laboratory of Aquatic Animal Medicine and Pathology for their assis- tance. Performed under NEFSC. MMPA #917. Literature Cited 1. McNally, M. A., J. O. Small, R. A. B. Mollan, and ). Wilson. 1
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 302 REPORTS FROM THE MBL GENERAL SCIENTIFIC MEETINGS. comparative studies of pinniped thermoregulation and anat- omy. Donald Schrank (Kenyon College) was a visiting student at the Boston University Marine Program. We thank Gillian Sanders. Nathalie Ward. Sentiel Rommel. John Nicholas. Winslow Schrank, Elaine Close, and others at the Laboratory of Aquatic Animal Medicine and Pathology for their assis- tance. Performed under NEFSC. MMPA #917. Literature Cited 1. McNally, M. A., J. O. Small, R. A. B. Mollan, and ). Wilson. 1992. Amu Ree. 233:643-650. 2. Dierauf, I,. A. 1990. Pp. 381-398 in Marine Mammal Medicine; llcultk. /)nr<MC. uihl Rehabilitation. L A. Dierauf, ed. CRC Press. Boca Raton, 3. Evans, H. D., and G. C. Christensen. 1979. Miller'* Anatomy oi the Dot; W. B. SaundersCo., Philadelphia. Figure 1. Tlw anene\ at the foreflipper of Phoca vitulina < re- vealed hy contract artcnography (lothalamate meglumine, Conray 60). At mcituin artery; li) common interosseous artery; C) caudal interosse- d/is artery; 1)1 palmar common digital arteries; E) pa/mar proper digital artery I, I-'I uhti \iul palmar digital artery I'; G) axial palmar digital artery 11 I kodak \ Fine \-ray film. 60 Kv S maS 16 in*) Reference: fl/W Bull 191: 302-303. (October, Direct Observation of Contact Digestion in Inside-Out Oriented Aurelia aurita Polyps Dirk Bunuinn and Alan Kuzirian (Marine Biological Laboratory) Extracellular digestion in a scyphozoan polyp has been as- sumed to be mediated by digestive enzymes freely secreted into the small and simple gastric cavity ("luminal digestion") (1). But, histological examination of Aurelia aurita polyps, fixed at various time intervals after ingestion of an Anemia nauplius, indicated that the prey is in intimate contact with the polyp's gastrodermis throughout digestion, and that digestive enzyme secretion, extracellular digestion, and endocytosis a
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