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Effects of lure type, fish size and water temperature on hooking location and bleeding in northern pike (Esox lucius) angled in the Baltic Sea

Author:
  • Martin Stålhammar
  • T. Franstam
  • J. Lindstrom
  • J. Hojesjo
  • R. Arlinghaus
  • Anders Nilsson
Publishing year: 2014
Language: English
Pages: 164-169
Publication/Series: Fisheries Research
Volume: 157
Document type: Journal article
Publisher: Elsevier

Abstract english

In recreational fishing, catch and release (C&R), where fish are released alive after capture, is commonly adopted to minimize fishing mortality. Injuries from hooking and the mode of de-hooking can affect survival probability, and the choice of angling gear can affect injury severity. We show for C&R angling for northern pike (Esox lucius) in the Baltic Sea that hooking location and size of fish captured vary among lure types. Hooking in gills and aorta increased bleeding severity, which was generally expressed more strongly in larger pike. Our results supported the notion that anglers can minimize injury in northern pike angling by the choice of appropriate gear. In addition, our study is one of the first to show that hooking location is also affected by water temperature; low temperatures tended to result in deeper hooking. Despite this, water temperature did not affect level of bleeding in pike, and low water temperatures may be beneficial as they likely reduce the overall stress response in released pike. (C) 2014 Elsevier B.V. All rights reserved.

Keywords

  • Ecology

Other

Published
  • ISSN: 0165-7836
Anders Nilsson
E-mail: anders [dot] nilsson [at] biol [dot] lu [dot] se

Professor

Aquatic ecology

+46 46 222 83 65

+46 70 346 25 66

E-D130

50

Research group

Aquatic Ecology

Projects

Doctoral students and postdocs

Main supervisor

Varpu Pärssinen

Assistant supervisor

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