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Title: Behavioural patterns of sea lamprey’s spawning migration during difficult passage areas studied by electromyogram telemetry
Authors: Quintella, B.R.
Andrade, A.
Koed, A.
Almeida, Pedro R.
Keywords: activity effort
burst swimming
EMG telemetry
obstacle negotiation
Petromyzon marinus
River Mondego
Issue Date: 2004
Publisher: Wiley On Line Library
Citation: Quintella, B.R.; N.O. Andrade; A. Koed & P.R. Almeida (2004). Behavioural patterns of sea lamprey’s spawning migration during difficult passage areas studied by electromyogram telemetry. Journal of Fish Biology, 65: 1-12.
Abstract: Electromyogram telemetry (EMG) was used to study the behaviour of sea lamprey Petromyzon marinus during migration through difficult passage areas. When swimming on stretches free from obstacles, the EMG values of sea lampreys showed a constant pattern of activity. Conversely, when negotiating difficult passage areas their behaviour were characterized by alternating between short bursts of intense activity (i.e. burst movements) and periods of motionless rest during which sea lampreys attached to convenient structures by means of the oral sucker. During blockstone weirs negotiation, tagged sea lampreys spent on average 23% of the time swimming rapidly by means of multiple bouts of burst movements of 31 s duration. To recover from each burst movement, the sea lampreys spent on average 2 min 25 s resting. Sea lampreys seemed affected by increasing fatigue, which probably resulted from initiating a new burst movement without fully recovering physiologically from the previous efforts.
Type: article
Appears in Collections:BIO - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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