Life-history strategies of pike in a high-altitude loch in Scotland

Treasurer, Jim (1998) Life-history strategies of pike in a high-altitude loch in Scotland. Freshwater Forum, 11, pp. 59-68.

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Abstract

Pike, Esox lucius, are present in Loch Callater at their highest altitude and most extreme habitat in the British Isles, with subarctic winter conditions and extended winter ice-cover. The response of pike in this environment is slower growth, due to a shorter growing season and the low availability of forage fish, giving the poorest reported length-at-age for pike in the British Isles. All pike were mature or had spawned in the same year, with gravid ovaries in April and normal recovering ovaries in June-July. As in other lochs with few prey fishes, the larger pike ate small items such as invertebrates.

Item Type: Article
Title: Life-history strategies of pike in a high-altitude loch in Scotland
Personal Creator/Author:
CreatorsEmail
Treasurer, Jim
Refereed: No
Journal or Publication Title: Freshwater Forum
Volume: 11
Page Range: pp. 59-68
Date: 1998
ISSN: 0961-4664
Issuing Agency: Freshwater Biological Association
Uncontrolled Keywords: Diets; Feeding behaviour; Freshwater fish; Lakes; Life history; Sexual reproduction; Stomach content; Scotland; Loch Callater
Subjects: Ecology
Biology
Limnology
Item ID: 4596
Depositing User: Hardy B Schwamm
Date Deposited: 26 Nov 2010 12:40
Last Modified: 29 Sep 2011 16:12
URI: http://aquaticcommons.org/id/eprint/4596

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