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Brown Trout Stocking: an Annotated Bibliography and Literature Review

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Brown Trout Stocking: An Annotated Bibliography and Literature Review T. A. Lasenby and S. J. Kerr Fisheries Section Fish and Wildlife Branch Ontario Ministry of Natural Resources March 2001 This publication should be cited as follows: Lasenby, T. A. and S. J. Kerr. 2001. Brown trout stocking: An annotated bibliography and literature review. Fish and Wildlife Branch, Ontario Ministry of Natural Resources. Peterborough, Ontario. 187 p. + appendices. Printed in Ontario, Canada (0.3 k P. R. 01 15 03) MNR 51488 ISBN 0-7794-0784-9 Copies of this publication are available from: Fish and Wildlife Branch Ontario Ministry of Natural Resources P. O. Box 7000 300 Water Street Peterborough, Ontario K9J 8M5 Cette publication spécialisée n’est disponible qu’en anglais. Cover drawing by Ruth E. Grant, Brockville, Ontario. Table of Contents Preface............................................................................................................................................(i) Table of Contents ..........................................................................................................................(ii) History of Brown Trout Stocking in Ontario ...................................................................................1 Synthesis of Selected Literature .......................................................................................................5 Annotated Bibliography .................................................................................................................25 Acknowledgements ......................................................................................................................173 Subject Key ..................................................................................................................................175 Subject Index................................................................................................................................177 Appendix 1. Brown trout stocking in Ontario waters, 1900-2000. Appendix 2. A summary of post-stocking survival rates of brown trout reported from various waters. Appendix 3. Contribution of stocked brown trout to selected recreational fisheries in various waters. (ii) History of Brown Trout Stocking in Ontario History of Brown Trout Stocking in Ontario Brown trout (Salmo trutta) was originally believed to be two separate species. The Loch Leven trout (formerly Salmo leveninsis) originated in Scotland, while the German brown trout (formerly Salmo fario), was from Germany. It is now believed that these fish were simply local strains of the same species. Both varieties were introduced into the United States during the 1880s and shortly after became indistinguishable from one another due to mixing in hatcheries (Holcomb 1964). Records indicate that brown trout were introduced into Ontario in 1913, although it is suspected that private citizens may have planted the species into several waters at an earlier date (MacCrimmon and Marshall 1968). The first confirmed introduction consisted of fingerlings stocked into the Speed River near Hespeler and into several streams in the counties of Simcoe, Norfolk and Perth (MacKay 1957). Trout planted in Perth County were of the German variety (Anonymous 1914). At this time Ontario had no brown trout rearing facilities and the fish were obtained from Pennsylvania (MacCrimmon and Marshall 1968). Other early introductions of brown trout in Ontario were made using parental brood stock from Michigan hatcheries and were of unknown strain (Crossman 1984). Brown trout were experimental rearing at the Mount Pleasant hatchery resulted in 2,590 fish being planted into Big Clear Lake (Frontenac County), Eagle Lake (Peterborough County), Nepahwin Lake (Sudbury District) and Muskoka Lake (Muskoka District), in 1929 (Anonymous 1930). Several early introductions of the brown trout into Ontario waters are presented in Table 1. During the initial years, retention of a brown trout brood stock was restricted to the Mount Pleasant facility with the provincial fish hatchery at Kenora also providing facilities to handle the fish to the fry stage (Anonymous 1932). By 1949, six hatcheries (Chatsworth, Codrington, Glenora, Ingersoll, Mount Pleasant and Normandale) were involved in some form of brown trout culture (Anonymous 1950). Table 1. Some early stocking records of brown trout in Ontario waterbodies. Year Waterbody (County) Life stage Number Stocked Reference 1913 Speed River (Hespeler) Unknown 1,000 Anonymous (1914) 1913 Misc. Simcoe area streams (Norfolk) Unknown 1,000 Anonymous (1914) 1913 Misc. streams (Perth) Unknown 1,000 Anonymous (1914) 1914 Whiteman’s Creeks (Waterloo) Unknown 800 Anonymous (1915) 1918 Misc. St. Williams area streams (Norfolk) Unknown 15,000 Anonymous (1919) 1918 Glencoe area pond (Middlesex) Unknown 10,000 Anonymous (1919) 1929 Big Clear Lake (Frontenac) Adults 400 Anonymous (1930) 1929 Eagle Lake (Peterborough) Adults 1,000 Anonymous (1930) 1929 Muskoka Lake (Muskoka) Adults 800 Anonymous (1930) 1929 Nepahwin (Sudbury) Adults 390 Anonymous (1930) 1931 Mississippi River (Carleton) Fingerlings 15,000 Anonymous (1932) 1931 Saugeen River (Grey) Fingerlings 15,000 Anonymous (1932) 1931 Trout Lake (Kenora) Fingerlings 15,000 Anonymous (1932) 1931 Charleston Lake (Leeds) Fingerlings 15,000 Anonymous (1932) 1931 Muskoka River (Muskoka) Fingerlings 8,000 Anonymous (1932) 1931 Rosseau River (Muskoka) Fingerlings 8,000 Anonymous (1932) 1931 Maitland River (Perth) Fingerlings 10,000 Anonymous (1932) …cont’d Table 1 (cont’d) 1 History of Brown Trout Stocking in Ontario Year Waterbody (County) Life Stage Number Stocked Reference 1932 Lake Manitou (Manitoulin) Fingerlings 10,000 Anonymous (1933) 1932 Madawaska River (Renfrew) Fingerlings 30,000 Anonymous (1933) 1933 Haliburton Lake (Haliburton) Fingerlings 5,000 Anonymous (1934) 1933 Humber River (Peel) Fingerlings 10,000 Anonymous (1934) 1933 Catchacoma Lake (Peterborough) Fingerlings 25,000 Anonymous (1934) 1933 Grand River (Waterloo) Fingerlings 15,000 Anonymous (1934) 1933 Ganaraska River (Durham) Yearlings 674 Anonymous (1934) In 1932, a brown trout stocking policy was endorsed by the Ontario government which allowed planting only in streams where brook trout did not exist and in lake trout lakes without tributary streams (Anonymous 1933). Between 1913 and 1962, approximately ten million brown trout fry, fingerlings and yearlings were planted into Ontario waters by the provincial government (MacCrimmon and Marshall 1968). Over the course of the last century numerous fish culture stations have been involved in the rearing of brown trout (Table 2). The culture of brown trout ceased in the early 1960s due to disease concerns. It was feared that furunculosis was being passed on to native trout populations (Anonymous 1983). In 1982 the culture of brown trout was revived at Codrington Fish Culture Station and 290,000 eggs were collected from the Ganaraska and Sydenham rivers, reared to the fingerling and yearling stages and returned to those rivers. These hatchery-reared fish were superior to their predecessors in being pathogen-free. The renewal of the stocking program came at the request of southern Ontario anglers in contrast to the attitudes of anglers in the 1960s who felt that the return on hatchery trout was too low to make an impact on the brown trout fishery (MacCrimmon and Marshall 1968). Brown trout stocking in Ontario has continued on an annual basis since 1982 (Anonymous 1982). Table 2. The propagation of brown trout in Ontario government hatcheries, 1929-2000. Name Years of Operation Known Year(s) of Brown Trout Propagation Mount Pleasant 1909-1965 1929-49 Kenora 1915-? 1930-1931 Ingersoll 1931-1962 1947-1949* Glenora 1923-1955 1947-1949* Chatsworth 1936-present 1947-1949*, 1987-2000 Codrington 1930-1991 1947-1949*, 1982-1991 Harwood 1985-present 1986-1992, 1994-2000 Normandale 1917-present 1947-1949, 1986, 1991-2000 Westport 1950-1985 1961 Ringwood 1980-present 1992-1998 Tarentorus 1956-present 1999 White Lake 1934-present 1971, 1993-2000 Blue Jay Creek 1989-present 1997-2000 *Although it is highly likely that these fish culture stations were rearing brown trout for a longer period of time, no specific documentation could be found. Currently, the majority of the brown trout are stocked into the waters of the Great Lakes (Table 3). Table 3. Brown trout stocked in Ontario waters by the Ontario Ministry of Natural Resources in 2000. 2 History of Brown Trout Stocking in Ontario Region MNR/Great Lake District Number of fish stocked by year Northeastern Sault Ste. Marie 8,379 Southcentral Aurora 27,557 Aylmer 0 Bancroft 1,000 Cambridge 33,447 Kemptville 9,422 Midhurst 27,372 Parry Sound 0 Pembroke 9,831 Peterborough 500 Great Lakes Lake Ontario 167,033 Lake Superior 0 Total 284,541 Brown trout stocking can vary within administrative districts from one year to the next, depending on the purpose of the stocking; Aurora, Parry Sound and Lake Superior were stocked in 1999. No brown trout were stocked into northwestern Ontario in either 1999 or 2000. In 2000, 167,033 yearling brown trout were stocked into the Great Lakes and 117,508 into inland waters. The total number of brown trout planted in 2000 accounted for only 3.0% of the total number of fish stocked from provincial fish culture stations. Currently, the only brown trout strain in the Provincial hatchery system is of Ganaraska River origin. Brood stock are taken from Lake Ontario and the Ganaraska River. This strain reproduces naturally, although its migrational
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