Seasonal and diel effects on the activity of northern pike studied by high-resolution positional telemetry

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Abstract

Temperate lakes can be ice covered for several months each year, yet little is known about the behaviour and activity of the fish during the cold season. As northern pike represents the top of the food web in many northern temperate lakes and may structure the ecosystem both directly and indirectly, a detailed understanding of the behaviour of this species during winter is important. We continuously monitored the activity of adult northern pike (Esox lucius) in a small temperate lake from late summer to winter for two consecutive years using an automatic acoustic positional telemetry system. Four subsample periods representing different temperature regimes from each year were chosen for further investigation. The results revealed that pike activity was similar between seasons. In all periods, a distinct diel pattern, showing increased activity during day as compared to night, was evident. Our findings indicate that the fish component of temperate lentic ecosystems can be more active during the cold season than previously assumed. This may have implications for the structuring effect of pike on the lower trophic levels
Original languageEnglish
JournalEcology of Freshwater Fish
Volume21
Issue number3
Pages (from-to)386-394
ISSN0906-6691
DOIs
Publication statusPublished - 2012

Cite this

@article{26437a040d764511905d2a13a2a3e7ce,
title = "Seasonal and diel effects on the activity of northern pike studied by high-resolution positional telemetry",
abstract = "Temperate lakes can be ice covered for several months each year, yet little is known about the behaviour and activity of the fish during the cold season. As northern pike represents the top of the food web in many northern temperate lakes and may structure the ecosystem both directly and indirectly, a detailed understanding of the behaviour of this species during winter is important. We continuously monitored the activity of adult northern pike (Esox lucius) in a small temperate lake from late summer to winter for two consecutive years using an automatic acoustic positional telemetry system. Four subsample periods representing different temperature regimes from each year were chosen for further investigation. The results revealed that pike activity was similar between seasons. In all periods, a distinct diel pattern, showing increased activity during day as compared to night, was evident. Our findings indicate that the fish component of temperate lentic ecosystems can be more active during the cold season than previously assumed. This may have implications for the structuring effect of pike on the lower trophic levels",
author = "Henrik Baktoft and Kim Aarestrup and S{\o}ren Berg and Mikkel Boel and Lene Jacobsen and Niels Jepsen and Anders Koed and Svendsen, {Jon Christian} and Christian Skov",
year = "2012",
doi = "10.1111/j.1600-0633.2012.00558.x",
language = "English",
volume = "21",
pages = "386--394",
journal = "Ecology of Freshwater Fish",
issn = "0906-6691",
publisher = "Wiley-Blackwell",
number = "3",

}

TY - JOUR

T1 - Seasonal and diel effects on the activity of northern pike studied by high-resolution positional telemetry

AU - Baktoft, Henrik

AU - Aarestrup, Kim

AU - Berg, Søren

AU - Boel, Mikkel

AU - Jacobsen, Lene

AU - Jepsen, Niels

AU - Koed, Anders

AU - Svendsen, Jon Christian

AU - Skov, Christian

PY - 2012

Y1 - 2012

N2 - Temperate lakes can be ice covered for several months each year, yet little is known about the behaviour and activity of the fish during the cold season. As northern pike represents the top of the food web in many northern temperate lakes and may structure the ecosystem both directly and indirectly, a detailed understanding of the behaviour of this species during winter is important. We continuously monitored the activity of adult northern pike (Esox lucius) in a small temperate lake from late summer to winter for two consecutive years using an automatic acoustic positional telemetry system. Four subsample periods representing different temperature regimes from each year were chosen for further investigation. The results revealed that pike activity was similar between seasons. In all periods, a distinct diel pattern, showing increased activity during day as compared to night, was evident. Our findings indicate that the fish component of temperate lentic ecosystems can be more active during the cold season than previously assumed. This may have implications for the structuring effect of pike on the lower trophic levels

AB - Temperate lakes can be ice covered for several months each year, yet little is known about the behaviour and activity of the fish during the cold season. As northern pike represents the top of the food web in many northern temperate lakes and may structure the ecosystem both directly and indirectly, a detailed understanding of the behaviour of this species during winter is important. We continuously monitored the activity of adult northern pike (Esox lucius) in a small temperate lake from late summer to winter for two consecutive years using an automatic acoustic positional telemetry system. Four subsample periods representing different temperature regimes from each year were chosen for further investigation. The results revealed that pike activity was similar between seasons. In all periods, a distinct diel pattern, showing increased activity during day as compared to night, was evident. Our findings indicate that the fish component of temperate lentic ecosystems can be more active during the cold season than previously assumed. This may have implications for the structuring effect of pike on the lower trophic levels

U2 - 10.1111/j.1600-0633.2012.00558.x

DO - 10.1111/j.1600-0633.2012.00558.x

M3 - Journal article

VL - 21

SP - 386

EP - 394

JO - Ecology of Freshwater Fish

JF - Ecology of Freshwater Fish

SN - 0906-6691

IS - 3

ER -