Biological Data on the Major Fish Species from Fifty-Nine Inland Lakes in the Northwest Territories,1959 - 68 R.W. Moshenko January 1980 Canadian Data Report of Fisheries & Aquatic Sciences No.175 • Canadian Data Report of Fisheries and Aquatic Sciences These reports provide a medium for filing and archiving data compilations where little or no analysis is included . Such compilations commonly will have been prepared in support of other journal publications or reports. The subject matter of Data Reports reflects the broad interests and policies of the Department of Fisheries and Oceans, namely, fisheries management, technology and development, ocean sciences, and aquatic environments relevant to Canada. Numbers 1-25 in this series were issued as Fisheries and Marine Service Data Records. Numbers 26-160 were issued as Department of Fisheries and the Environ­ ment , Fisheries and Marine Service Data Reports. The current series name was changed with report number 161. Data Reports are not intended for general distribution and the contents must not be referred to in other publications without prior written clearance from the issuing establishment. The correct citation appears above the abstract of each report. Rapport statistique canadien des sciences halieutiques et aquatiques Ces rapports servent de base a la compilation des donnees de classement et d'archives pour lesquelles il y a peu ou point d'analyse. Cette compilation aura d'ordinaire ete preparee pour appuyerd'autres publications ou rapports. Les sujets des Rapports statistiques refletent la vaste gamme des interl~ts et politiques du Ministere des Peches et des Oceans, notamment gestion des peches, techniques et develop­ pement , sciences oceaniques et environnements aquatiques, au Canada. Les numeros 1 a 2S de cette serie ont ete publies a titre de Records statistiques, Service des peches et de la mer. Les numeros 26-160 ont ete publiesa titre de Rapports statistiques du Service des peches et de la mer, Ministere des Peches et de l'Environnement. Le nom de la serie a ete modifie a partir du numero 161. Les Rapports statistiques ne sont pas prepares pour une vaste distribution et leur contenu ne doit pas etre mentionne dans une publication sans autorisation ecrite prealable de I\~tablissement auteur. Le titre exact parait au haut du resume de chaque rapport. Canadian Data Report of Fisheries and Aquatic Sciences 175 January 1980 BIOLOGICAL DATA ON THE MAJOR FISH SPECIES FROM FIFTY-NINE INLAND LAKES IN THE NORTHWEST TERRITORIES, 1959-68 by R. W. Moshenko Western Region Department of Fisheries and Oceans .. Winnipeg, Manitoba R3T 2N6 This is the 23rd Data Report from the Western Region, Winnipeg i ; " ,. .. © Minister of Supply and Services Canada 1980 Cat. no. Fs 97-13/175 ISSN 0706-6465 iii TABLE OF CONTENTS LIST OF TABLES cont'd ., Page Tabl e Page ABSTRACT/RESUME . vi i i 10 Fork length and round weight data for lake t rout taken in gillnets (1 ~ to " INTRODUCTI ON . 5~ in) from Beaverlodge Lake, 1959 10 11 Fork length, round weight and age data MATERIALS AND METHODS 1 for northern pike taken in gillnets (1 ~ to 5 ~ in) from Beaverlodge, 1959 . 10 ACKNOWLEDGMENTS 12 Fork length, round weight and age data for lake wh i tefish in gillnets (1 ~ to REFERENCES 5 ~ in) from Beechey Lake, 1959 11 13 For k length and round weight data for la ke trout in gillnets (1 ~ to 5 ~ in) from Beechey Lake, 1959 . 11 14 Mean fork length, mean round weight, condition factor and sex ratio by length interval for lake whitefish in gillnets (4 ~ , 5~ in) from Beniah Lake, 1963 12 15 Mean fork length, mean round weight, LIST OF FIGURES condition factor and sex ratio by age for lake whitefi sh in gillnets (4 ~ , 5~ Figure Page in) from Beniah Lake, 1963 . 12 16 Mean fork length, mean round weight, Location of the inland lakes in the condition factor and sex ratio by leng­ Northwest Territories referred to in th interval for lake trout in gillnets the report . 3 (4 ~ , 5 ~ on) from Beniah Lake, 1963 13 17 Fork length, round weight and age data for lake whitefish in gillnets (1 ~ to 5~ in) from Beverly Lake, 1959 14 18 Fork length and round weight data for lake trout in gillnets (1 ~ to 5~ in) LIST OF TABLES from Beverly La ke, 1959 . 14 19 Fork length and round weight data for Table Page northern pike in gillnets (1 ~ to 5y, in) from Beverly Lake, 1959 . 14 Location, surface area and fishery 20 Fork length and round weight data for utilization on the inland lakes in cisco in gillnets (1 ~ to 5 ~ in) from the Northwest Territories referred Beverly Lake, 1959 15 to in the report 4 21 Mean fo r k length, mean round weight, 2 Mean fork length, mean round weight, condition factor and sex ratio by length condition factor and sex ratio by interval for lake trout in gillnets length interval for lake whitefish (4 ~ , 5 ~ , 5 ~ in) from Blatchford Lake, in gillnets (5~ in) from Angikuni 1963 15 Lake, 1968 6 22 Mean fork length, mean round weight, 3 Fork length, round weight and age data condition factor and sex ratio by length for lake whitefish taken in gillnets interval for lake whitefish in gillnets (1 y, to 5 ~ in) from Angikuni Lake, (4 ~ , 5 ~ , 5 ~ in) from Blatchford Lake, 1959 6 1963 16 4 Mean fork length, mean round weight, 23 Mean fork length , mean round weight, condition factor and sex ratio by condition factor and sex ratio by age length interval for lake trout in for lake whitefish in gillnets (4~, 5 ~ , gillnets (5 ~ in) from Angikuni Lake, 5 ~ in) from Blatchford Lake, 1963. 16 1968 7 24 Mean fork length, mean round weight , 5 Fork length and round weight data for condition factor and sex ratio by length lake trout taken in gillnets (1 ~ to interval for lake whitefish in gillnets 5 ~ in) from Angikuni La ke, 1959 7 (4 ~ , 5~ , 5 ~ in) from Buckham Lake, 6 Mean fork length, mean round weight, 1963 17 condition factor and sex ratio by 25 Mean fork length, mean round weight, length interval for lake whitefish condition factor and sex ratio by age in gillnets (5 ~ in) from Baker Lake, for lake whitefish in gill nets (4 ~ , 5 ~ , 1967 . 8 5 ~ in) from Buckham La ke, 1963 17 7 Fork length, round weight and age data 26 Mean fork length, mean round weight, for lake whitefish taken in gillnets conditi on factor and sex ratio by length (5 y, in) from Ba ker Lake, 1959 . 8 interval for lake trout in gillnets (4 ~ , 8 Mean fork length, mean round weight, 5 ~ , 5 ~ in) from Buckha ~ La ke, 1963 18 condition factor and sex ratio by 27 Mean fork length, mean round weight, A length interval for lake trout in condition factor and sex ratio by length gillnets (5~ in) from Baker La ke, interval for lake whitefish in gillnets 1967 . 9 (5 ~ in) from Casmir Lak e, 1968 19 9 Fork length and round weight data for 28 Mean fork length, mean round weight, la ke whitefish taken in gillnets (1 ~ condition factor and sex ratio by length to 5y, in) from Beaverlodge Lak e, for lake trout in gillnets (5 y, in) from 1959 10 Ca smir Lake, 1968 . 19 iv LI ST OF TABLE S cont'd LI ST OF TABLES cont'd Table Page Table Page 29 Fork length and round weight data for 48 Mean fork length and mean round weight lake trout taken in gillnets (1 ~ , to data for lake trout in gillnets (4 ~ , 5y, in) from Clinton-Colden Lake, 5 ~ in) from Great Bear Lake, 1964 29 1959 20 49 Mean fork length and mean round weight 30 Mean fork length, mean round weight, for lake trout in gillnets (1 ~ to 5~ condition factor and sex ratio by len- in) from Great Bear Lake, 1965 29 gth interval for lake whitefish in 50 Mean fork length, mean round weight, gillnets (4\ , 5 ~ in) from Desperation condition factor and sex ratio by Lake, 1963 20 1ength i nterva 1 for lake wh i tefish in 31 Mean fork length, mean round weight, gillnets (5 in) from Hearne Lake, condition factor and sex ratio by age 1963 30 for lake whitefish in gillnets (4\ , 51 Mean fork length, mean round weight, SY, in) from Desperation Lake, 1963 21 condition factor and sex ratio by 32 Mean fork length, mean round weight, age for lake whitefish in gillnets condition factor and sex ratio by (5 in) from Hearne Lake, 1963 . 30 length interval for lake trout in gill- 52 Mean fork length, mean round weight, nets (4 \ , 5y, in) from Desperation Lake, condition factor and sex ratio by 1963 21 length interval for lake trout in 33 Fork length, round weight and age data gillnetts (5 in) from Hearne Lake, for lake whitefish taken in gillnets 1963 31 (1 y, to 5 ~ in) from Dismal Lake, 1959. 22 53 Mean fork length, mean round weight, 34 Fork length and round weight data for condition factor and sex ratio by lake trout taken in gillnets (1~ to length interval for lake whitefish SY, in) from Dismal La ke, 1959 . 22 in gillnets (5 ~ in) from Hidden Lake, 35 Fork length, round weight and age data 1961 31 for cisco sp. taken in gillnets (1 ~ to 54 Mean fork length, mean round weight, 5 ~ in) from Dismal Lake, 1959 . 23 condition factor and sex ratio by a 36 Fork length, round weight and age data length interval for lake whitefish for lake whitefish taken in gillnets i n gillnets (4, 5, 5y, in) from Hill (1 ~ to 5y, in) from Dubawnt Lake, Island Lake, 1963 .