Observations on the functional anatomy of the Ommastrephid, Illex Illecebrosus (Leseur, 1821) (Coleoidea: Cephalopoda), with emphasis on musculature and the blood vascular system
Thesis (Ph.D)--Memorial University of Newfoundland, 1970. Biology Bibliography: leaves 383-410. The ommastrephid lllex illecebrosus, has escaped analysis by anatomists for the almost 150 years since its first description by Lesueur in 1821. During the mid-1880's, A. E. Verrill, in his studies o...
Main Author: | |
---|---|
Other Authors: | |
Format: | Thesis |
Language: | English |
Published: |
1970
|
Subjects: | |
Online Access: | http://collections.mun.ca/cdm/ref/collection/theses2/id/224282 |
id |
ftmemorialunivdc:oai:collections.mun.ca:theses2/224282 |
---|---|
record_format |
openpolar |
spelling |
ftmemorialunivdc:oai:collections.mun.ca:theses2/224282 2023-05-15T17:23:31+02:00 Observations on the functional anatomy of the Ommastrephid, Illex Illecebrosus (Leseur, 1821) (Coleoidea: Cephalopoda), with emphasis on musculature and the blood vascular system Bradbury, Helen Elizabeth Memorial University of Newfoundland. Dept. of Biology 1970 xviii, 410 leaves : ill. Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses2/id/224282 Eng eng Electronic Theses and Dissertations (35.08 MB) -- http://collections.mun.ca/PDFs/theses/Bradbury_HelenElizabeth.pdf 76005610 http://collections.mun.ca/cdm/ref/collection/theses2/id/224282 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. Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries Squids Text Electronic thesis or dissertation 1970 ftmemorialunivdc 2015-08-06T19:17:26Z Thesis (Ph.D)--Memorial University of Newfoundland, 1970. Biology Bibliography: leaves 383-410. The ommastrephid lllex illecebrosus, has escaped analysis by anatomists for the almost 150 years since its first description by Lesueur in 1821. During the mid-1880's, A. E. Verrill, in his studies on Northeastern Atlantic cephalopods, gave excellent descriptions, with detailed illustrations of this particular oegopsid. Also incorporated in Verrill’s descriptions are recorded observations on certain behavioural aspects such as the feeding and colour changes of this squid. It was for Leonard Williams (1909) to give zoologists an accurate and detailed study of the anatomy of a decapod cephalopod, the species being Loligo pealei Lesueur. This work has since become the standard source of squid anatomy, particularly in North America. Too often, however, squid structure and function is interpreted on basis of knowledge of octopods or sepioids, whether it applies or not. -- Wherever possible, this thesis departs in large measure from previous squid anatomical studies in that it incorporates functional aspects of the anatomy with gross and microscopic structural features of selected organs and organ systems of lllex illecebrosus. -- The musculature of the mantle complex, the hyponomal complex and the brachial cone complex are elucidated and described from a functional viewpoint. Greatest effort was made in the use of a variety of techniques to trace the blood vascular system and observe its several parts in vivo. The system, really a double system, is closed and blood always passes through endothelial lined vessels. Consideration was also given to the cartilaginous and structural skeletal features of the squid, as well as gross, microscopic and in vivo anatomical studies of the alimentary canal and its associated organs. These morphological investigations are enhanced by related behavioural investigations conducted primarily on locomotion and feeding. -- The results of these studies are the basis of discussion on the molluscan structural nature of the squid, its divergence from the basic ancestral molluscan body plan, and subsequent evolution into a pelagic oceanic niche. Thesis Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
institution |
Open Polar |
collection |
Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
op_collection_id |
ftmemorialunivdc |
language |
English |
topic |
Squids |
spellingShingle |
Squids Bradbury, Helen Elizabeth Observations on the functional anatomy of the Ommastrephid, Illex Illecebrosus (Leseur, 1821) (Coleoidea: Cephalopoda), with emphasis on musculature and the blood vascular system |
topic_facet |
Squids |
description |
Thesis (Ph.D)--Memorial University of Newfoundland, 1970. Biology Bibliography: leaves 383-410. The ommastrephid lllex illecebrosus, has escaped analysis by anatomists for the almost 150 years since its first description by Lesueur in 1821. During the mid-1880's, A. E. Verrill, in his studies on Northeastern Atlantic cephalopods, gave excellent descriptions, with detailed illustrations of this particular oegopsid. Also incorporated in Verrill’s descriptions are recorded observations on certain behavioural aspects such as the feeding and colour changes of this squid. It was for Leonard Williams (1909) to give zoologists an accurate and detailed study of the anatomy of a decapod cephalopod, the species being Loligo pealei Lesueur. This work has since become the standard source of squid anatomy, particularly in North America. Too often, however, squid structure and function is interpreted on basis of knowledge of octopods or sepioids, whether it applies or not. -- Wherever possible, this thesis departs in large measure from previous squid anatomical studies in that it incorporates functional aspects of the anatomy with gross and microscopic structural features of selected organs and organ systems of lllex illecebrosus. -- The musculature of the mantle complex, the hyponomal complex and the brachial cone complex are elucidated and described from a functional viewpoint. Greatest effort was made in the use of a variety of techniques to trace the blood vascular system and observe its several parts in vivo. The system, really a double system, is closed and blood always passes through endothelial lined vessels. Consideration was also given to the cartilaginous and structural skeletal features of the squid, as well as gross, microscopic and in vivo anatomical studies of the alimentary canal and its associated organs. These morphological investigations are enhanced by related behavioural investigations conducted primarily on locomotion and feeding. -- The results of these studies are the basis of discussion on the molluscan structural nature of the squid, its divergence from the basic ancestral molluscan body plan, and subsequent evolution into a pelagic oceanic niche. |
author2 |
Memorial University of Newfoundland. Dept. of Biology |
format |
Thesis |
author |
Bradbury, Helen Elizabeth |
author_facet |
Bradbury, Helen Elizabeth |
author_sort |
Bradbury, Helen Elizabeth |
title |
Observations on the functional anatomy of the Ommastrephid, Illex Illecebrosus (Leseur, 1821) (Coleoidea: Cephalopoda), with emphasis on musculature and the blood vascular system |
title_short |
Observations on the functional anatomy of the Ommastrephid, Illex Illecebrosus (Leseur, 1821) (Coleoidea: Cephalopoda), with emphasis on musculature and the blood vascular system |
title_full |
Observations on the functional anatomy of the Ommastrephid, Illex Illecebrosus (Leseur, 1821) (Coleoidea: Cephalopoda), with emphasis on musculature and the blood vascular system |
title_fullStr |
Observations on the functional anatomy of the Ommastrephid, Illex Illecebrosus (Leseur, 1821) (Coleoidea: Cephalopoda), with emphasis on musculature and the blood vascular system |
title_full_unstemmed |
Observations on the functional anatomy of the Ommastrephid, Illex Illecebrosus (Leseur, 1821) (Coleoidea: Cephalopoda), with emphasis on musculature and the blood vascular system |
title_sort |
observations on the functional anatomy of the ommastrephid, illex illecebrosus (leseur, 1821) (coleoidea: cephalopoda), with emphasis on musculature and the blood vascular system |
publishDate |
1970 |
url |
http://collections.mun.ca/cdm/ref/collection/theses2/id/224282 |
genre |
Newfoundland studies University of Newfoundland |
genre_facet |
Newfoundland studies University of Newfoundland |
op_source |
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries |
op_relation |
Electronic Theses and Dissertations (35.08 MB) -- http://collections.mun.ca/PDFs/theses/Bradbury_HelenElizabeth.pdf 76005610 http://collections.mun.ca/cdm/ref/collection/theses2/id/224282 |
op_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. |
_version_ |
1766112984713658368 |