Contributions to the biology, anatomy and physiology of Opisthophthalmus Latimanus & other scorpions
- Authors: Alexander, Anne Joy
- Date: 1958
- Subjects: Scorpions -- South Africa , Scorpions -- Anatomy , Scorpions -- Physiology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5891 , http://hdl.handle.net/10962/d1013375
- Description: [From Introduction] For many years the problem of interrelationships within the Arthropoda and, indeed, the origin of the Phylum itself have been of interest to many zoologists. It was felt, for reasons which will be given later, that one of the studies which might throw some light on this matter is that of the neuromuscular physiology of arachnid appendages. Consequently it was proposed that the work which is reported here should be primarily concerned with this problem. As in so many cases involving live animals, both the experimental subjects and the experimenter gradually managed to change the direction in which work was proceeding and the result is that only a preliminary attack has been made on the original problem, while most of the material submitted here deals either with functional anatomy or with biological-cum-behavioural characteristics of the experimental animal. Thus it was found that to develop experimental preparations for neuro-muscular studies, it was necessary to work out the anatomy of the muscles and nerves of the appendages used; but this it is not enough. For these nerves and muscles are part of a functional complex which operates as a unit and have therefore to be studied in relation to the structures that they move. Considerations at this level, in fact, carried the study to the plane of functional anatomy. Furthermore it was recognised that even the comprehension of a limb as a functional complex cannot be acquired in isolation. All structures have an evolutionary history and in any consideration of functional anatomy this history must be taken into account - even if the consideration requires extension to the problem of the origin of the group immediately under study.
- Full Text:
- Date Issued: 1958
Contributions to the biology, anatomy and physiology of Opisthophthalmus Latimanus & other scorpions
- Authors: Alexander, Anne Joy
- Date: 1958
- Subjects: Scorpions -- South Africa , Scorpions -- Anatomy , Scorpions -- Physiology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5891 , http://hdl.handle.net/10962/d1013375
- Description: [From Introduction] For many years the problem of interrelationships within the Arthropoda and, indeed, the origin of the Phylum itself have been of interest to many zoologists. It was felt, for reasons which will be given later, that one of the studies which might throw some light on this matter is that of the neuromuscular physiology of arachnid appendages. Consequently it was proposed that the work which is reported here should be primarily concerned with this problem. As in so many cases involving live animals, both the experimental subjects and the experimenter gradually managed to change the direction in which work was proceeding and the result is that only a preliminary attack has been made on the original problem, while most of the material submitted here deals either with functional anatomy or with biological-cum-behavioural characteristics of the experimental animal. Thus it was found that to develop experimental preparations for neuro-muscular studies, it was necessary to work out the anatomy of the muscles and nerves of the appendages used; but this it is not enough. For these nerves and muscles are part of a functional complex which operates as a unit and have therefore to be studied in relation to the structures that they move. Considerations at this level, in fact, carried the study to the plane of functional anatomy. Furthermore it was recognised that even the comprehension of a limb as a functional complex cannot be acquired in isolation. All structures have an evolutionary history and in any consideration of functional anatomy this history must be taken into account - even if the consideration requires extension to the problem of the origin of the group immediately under study.
- Full Text:
- Date Issued: 1958
Correlation of the feeding habits, jaw musculature and type of teeth of some South African golden moles
- Authors: Thelejane, Thomas Sohl
- Date: 1958
- Subjects: Moles (Animals) -- Food , Insectivores (Mammals)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5892 , http://hdl.handle.net/10962/d1013385
- Description: The jaw musculature and its innervation in the Chrysochloridae studied is typicaly mammalian except that the m. temporalis occupies the whole of the orbito-temporal fossa. The antemolar teeth are specialized, while the molars are simple and primitive. Normally the diet of Golden Moles consists of earthworms, insects in all stages of development and millipedes. The firm implantation of the antemolar teeth can be correlated with their function of catching the prey, while the molars are adapted for a worm-like diet. The available evidence indicates that the genera Bematiscus and Chrysospalax are more primitive than the other Golden Moles. Since Golden Moles feed on insects in all stares of development and millipedes, they can be considered as being of economic importance.
- Full Text:
- Date Issued: 1958
- Authors: Thelejane, Thomas Sohl
- Date: 1958
- Subjects: Moles (Animals) -- Food , Insectivores (Mammals)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5892 , http://hdl.handle.net/10962/d1013385
- Description: The jaw musculature and its innervation in the Chrysochloridae studied is typicaly mammalian except that the m. temporalis occupies the whole of the orbito-temporal fossa. The antemolar teeth are specialized, while the molars are simple and primitive. Normally the diet of Golden Moles consists of earthworms, insects in all stages of development and millipedes. The firm implantation of the antemolar teeth can be correlated with their function of catching the prey, while the molars are adapted for a worm-like diet. The available evidence indicates that the genera Bematiscus and Chrysospalax are more primitive than the other Golden Moles. Since Golden Moles feed on insects in all stares of development and millipedes, they can be considered as being of economic importance.
- Full Text:
- Date Issued: 1958
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