TY - JOUR
T1 - Electromagnetic telemetry of lobster (Homarus gammarus (L.)) movements and activity: preliminary results
AU - Smith, I.P.
AU - Collins, K.J.
AU - Jensen, A.C.
N1 - La Rochelle proceedings "Advances in invertebrates and fish telemetry. Eds Lagardère, J-P., Bégout Anras, M-L. & Claireaux, G. Results from 4 individuals as example of EM system with pulse position coding and tilt switch telemetry.
PY - 1998
Y1 - 1998
N2 - Individual European lobsters were tracked on an artificial reef using an
electromagnetic telemetry system, which detected movements between reef
units and also recorded body movements (pitching and rolling) indicated
by a tilt switch incorporated into the transmitting tag. Several
environmental variables were recorded simultaneously by the telemetry
system, which was self-contained on the seabed. To date, 26 lobsters (14
female, 12 male) have been tagged, up to seven have been monitored
simultaneously and four individuals have been tracked for over 6 months.
Movements between units of the artificial reef (over open seabed away
from shelter) were predominantly nocturnal, although daytime movements
occurred during periods of low light levels associated with increased
turbidity resulting from wave action. A marked decline in the number of
inter-reef movements from late summer to winter was most closely related
to decreasing water temperature. Activity indicated by the tilt switch
was greater at night for most lobsters, but there were moderate levels
of activity during the day. As with inter-reef movements, activity
declined as winter progressed and in addition the diel pattern
diminished.
AB - Individual European lobsters were tracked on an artificial reef using an
electromagnetic telemetry system, which detected movements between reef
units and also recorded body movements (pitching and rolling) indicated
by a tilt switch incorporated into the transmitting tag. Several
environmental variables were recorded simultaneously by the telemetry
system, which was self-contained on the seabed. To date, 26 lobsters (14
female, 12 male) have been tagged, up to seven have been monitored
simultaneously and four individuals have been tracked for over 6 months.
Movements between units of the artificial reef (over open seabed away
from shelter) were predominantly nocturnal, although daytime movements
occurred during periods of low light levels associated with increased
turbidity resulting from wave action. A marked decline in the number of
inter-reef movements from late summer to winter was most closely related
to decreasing water temperature. Activity indicated by the tilt switch
was greater at night for most lobsters, but there were moderate levels
of activity during the day. As with inter-reef movements, activity
declined as winter progressed and in addition the diel pattern
diminished.
U2 - 10.1023/A:1017003711548
DO - 10.1023/A:1017003711548
M3 - Article
SN - 0018-8158
VL - 371
SP - 133
EP - 141
JO - Hydrobiologia
JF - Hydrobiologia
ER -
