This study is ecological in objective; primarily it attempts to evaluate environmental factors limiting the distribution of a wide-ranging species of fish, Gasterosteus aculeatus, in one sector of its holarctic range. Two approaches to this investigation are made: comparative and deductive. The comparative method is possible because many studies have been made on temperate-zone populations of the species; modified behaviour observed in the present study are consequently viewed as probably adaptive to the different environmental conditions of the north. [...]
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.117777 |
| Date | January 1965 |
| Creators | Freeman, Milton M. R. |
| Contributors | Dunbar, M. (Supervisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy. (Department of Marine Sciences. ) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: NNNNNNNNN, Theses scanned by McGill Library. |
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