Memorial University DAI: The structure of, and preliminary electrophysiological investigation upon, ciliated receptors in the Giant scallop, Placopecten maqellanicus (Gmelin)

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Title	The structure of, and preliminary electrophysiological investigation upon, ciliated receptors in the Giant scallop, Placopecten maqellanicus (Gmelin)
Author	Moir, Antony Jonathan Gordon
Description	Thesis (M.Sc.) -- Memorial University of Newfoundland, 1976. Biology
Date	1976
Pagination	viii, 110 leaves : ill.
Subject	Scallops; Sense organs--Mollusks; Placopecten magellanicus;
Degree	M.Sc.
Degree Grantor	Memorial University of Newfoundland. Dept. of Biology
Discipline	Biology
Language	Eng
Notes	Bibliography : leaves 103-110
Abstract	Studies have been carried out on the regeneration of the excised mantle eyes of the scallop Placopecten magellanicus (Gmelin). Many of the experiments performed by Butcher (1930) were repeated. The tentacles and the mantle cavity of the scallop have been examined for the occurrence of ciliated sense organs. When found these have been described anatomically. Preliminary physiological investigations have been made on the sense organs from the long tentacles. -- Results from the regeneration studies were negative. Two reasons have been suggested to explain the failure of these experiments; the water temperature was too low thus preventing regeneration, the species used in the present study is different from that used by Butcher. -- Examination of the tentacles has revealed a number of ciliated structures. A ciliated papilla found on both the long tentacles, in large numbers, and on the short tentacles, in small numbers has been extensively examined. Anatomical investigations in conjunction with preliminary physiological investigations suggest that the papillae subserve a sensory function and possibly respond to mechanical stimuli. A preliminary investigation of other ciliated structures on the short tentacles and the abdominal sense organ have been made. A chemosensory function is suggested for the structure of the receptors on short tentacles. The abdominal sense organ has no known function; several hypotheses are offered. -- A brief histological study of the anatomy of the circumpallial nerve has been made. The nerve displays a structure similar to that of the visceral ganglion.
Type	Text
Resource Type	Electronic thesis or dissertation
Format	Image/jpeg; Application/pdf
Source	Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifier	76006068
Rights	The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
Collection	Electronic Theses and Dissertations
Scanning Status	Completed
PDF File	(21.59 MB) -- http://collections.mun.ca/PDFs/theses/Moir_AntonyJonathanGordon.pdf
CONTENTdm file name	322817.cpd