Large vertical movements by a goosefish,Lophius americanus, suggests the potential of data storage tags for behavioral studies of benthic fishes

2008 ◽  
Vol 41 (1) ◽  
pp. 73-78 ◽  
Author(s):  
Rodney A. Rountree ◽  
Joachim P. Gröger ◽  
David Martins
Keyword(s):  
Data Storage ◽  
Vertical Movements ◽  
Behavioral Studies ◽  
Data Storage Tags ◽  
Benthic Fishes

scholarly journals Marine feeding areas and vertical movements of Atlantic salmon (Salmo salar) as inferred from recoveries of data storage tags

2015 ◽  
Vol 72 (7) ◽  
pp. 1087-1098 ◽  
Author(s):  
Sigurður Guðjónsson ◽  
Sigurður Már Einarsson ◽  
Ingi Rúnar Jónsson ◽  
Jóhannes Guðbrandsson
Keyword(s):  
Atlantic Salmon ◽  
Data Storage ◽  
Salmo Salar ◽  
Sea Surface ◽  
Vertical Movements ◽  
Atlantic Salmon Salmo Salar ◽  
Irminger Sea ◽  
Data Storage Tags ◽  
Solar Noon ◽  
Diurnal Behavior

We released 598 Atlantic salmon (Salmo salar) hatchery smolts in a river in Iceland in 2005 and 2006 tagged with data storage tags recording temperature and (depth) continuously. Five salmon returned in 2006 and two in 2007, all spending 1 year at sea. The complete temperature and depth profiles of the whole ocean migration were measured. The salmon stayed close to the surface most of the time and showed diurnal behavior, staying at slightly deeper waters during day. The salmon were in temperatures from 6 to 15 °C, with warmer temperatures in the summer. We compared the fish-recorded temperature with sea surface temperature from an available National Oceanic and Atmospheric Administration database to locate the fish at different times. Utilizing the diurnal behavior of the salmon, we estimated solar noon each day during winter. Sea surface temperatures and diurnal activity were used to estimate daily locations using established Hidden Markov Model for fish geolocation. The salmon in the study stayed southwest of Iceland in the Irminger Sea during the first summer months, but in the fall they moved towards the Faroes Islands and then back to the Irminger Sea where they stayed, until returning to the river. The salmon also took shorter and deeper dives (>100 m) during the latter part of their ocean migration.

scholarly journals Vertical migrations of saithe (Pollachius virens) in Icelandic waters as observed with data storage tags

2012 ◽  
Vol 69 (8) ◽  
pp. 1372-1381 ◽  
Author(s):  
Hlynur Armannsson ◽  
Sigurður Þór Jónsson
Keyword(s):  
Data Storage ◽  
Vertical Movement ◽  
Target Strength ◽  
Night Time ◽  
Neutral Buoyancy ◽  
Seasonal Differences ◽  
Vertical Movements ◽  
Vertical Range ◽  
Data Storage Tags ◽  
Icelandic Waters

Abstract Armannsson, H., and Jónsson, S. Þ. 2012. Vertical migrations of saithe (Pollachius virens) in Icelandic waters as observed with data storage tags. – ICES Journal of Marine Science, 69: . Knowledge of fish behaviour is important for general understanding of fish life history and responses to environmental and biological conditions. Vertical migrations can affect bottom trawl indices of the fish through their availability to the trawl and acoustic indices through changes in target strength. Here we present results based on data sets of hourly recordings of depth from 51 saithe. The data were analysed with respect to diel and seasonal differences in saithe vertical movement. Duration and extent of vertical movements were analysed with 1 min resolution, and the daily vertical range (DVR) was analysed with respect to potential use of the free vertical range (FVR). Our results show diel and seasonal differences in hourly depth changes of saithe, indicating reduced activity during night-time and in winter. Individual saithe are capable of rapid depth changes in <1 min, often of the same order as the maximum observed in movements of longer duration. The DVR often exceeded the FVR, and in some instances exceeded critical limits, indicating that saithe may at times only maintain neutral buoyancy near the upper limit of their daily vertical range.

scholarly journals Observations of vertical movements and depth distribution of migrating female lumpfish (Cyclopterus lumpus) in Iceland from data storage tags and trawl surveys

2015 ◽  
Vol 73 (4) ◽  
pp. 1160-1169 ◽  
Author(s):  
James Kennedy ◽  
Sigurður Þ. Jónsson ◽  
Halldór G. Ólafsson ◽  
Jacob M. Kasper
Keyword(s):  
Data Storage ◽  
Life Stage ◽  
Demersal Fish ◽  
Maximum Depth ◽  
Vertical Movements ◽  
Cyclopterus Lumpus ◽  
The North ◽  
Data Storage Tags ◽  
Time Of Year ◽  
Insight Into

Abstract Lumpfish (Cyclopterus lumpus) is a high latitude species most abundant in Arctic and sub-Arctic waters of the North Atlantic. Vertical behaviour of this fish is unclear as it is often caught by both pelagic and demersal trawls. To gain greater insight into its behaviour, 41 female lumpfish caught during the Icelandic Groundfish Survey (IGFS) in March were tagged with data storage tags (DSTs); the IGFS finishes ∼1 week before the beginning of the lumpfish fishing season (20 March). Data retrieved from returned tags were compared with information on depth and distribution of catches of lumpfish from the IGFS. Thirteen tags were returned with days at liberty ranging from 20 to 61 d. Maximum depth recorded was 308 m (maximum depth of the tag) but based upon interpolation of temperature recordings, one fish may have descended to ∼418 m. Lumpfish displayed a range of vertical behaviours termed demersal, surface, and pelagic. During March, most exhibited either demersal or pelagic behaviour but the time spent in surface behaviour increased from March to April. During demersal behaviour, depth was rarely constant indicating the fish were not stationary. Both DST and catch data from the IGFS indicate that lumpfish exhibit diel patterns in vertical behaviour. As lumpfish frequently exhibit demersal behaviour, the use of the IGFS to monitor changes in abundance is justified. As lumpfish spend a significant amount of time in both the pelagic and demersal zone, they should be considered as a semi-pelagic (or semi-demersal) fish during this life stage/time of year.

scholarly journals Open-ocean orientation and return migration routes of chum salmon based on temperature data from data storage tags

2001 ◽  
Vol 216 ◽  
pp. 235-252 ◽  
Author(s):  
KD Friedland ◽  
RV Walker ◽  
ND Davis ◽  
KW Myers ◽  
GW Boehlert ◽  
...  
Keyword(s):  
Data Storage ◽  
Return Migration ◽  
Chum Salmon ◽  
Temperature Data ◽  
Open Ocean ◽  
Migration Routes ◽  
Data Storage Tags

Introducing a method for extracting horizontal migration patterns from data storage tags

Hydrobiologia ◽  
2007 ◽  
Vol 582 (1) ◽  
pp. 187-197 ◽  
Author(s):  
Bjørn Ådlandsvik ◽  
Geir Huse ◽  
Kathrine Michalsen
Keyword(s):  
Data Storage ◽  
Migration Patterns ◽  
Horizontal Migration ◽  
Data Storage Tags

Spawning behavior in Atlantic cod: analysis by use of data storage tags

2014 ◽  
Vol 506 ◽  
pp. 279-290 ◽  
Author(s):  
TB Grabowski ◽  
V Thorsteinsson ◽  
G Marteinsdóttir
Keyword(s):  
Data Storage ◽  
Atlantic Cod ◽  
Spawning Behavior ◽  
Use Of Data ◽  
Data Storage Tags

scholarly journals Life under pressure: insights from electronic data-storage tags into cod swimbladder function

2007 ◽  
Vol 64 (7) ◽  
pp. 1293-1301 ◽  
Author(s):  
Jeroen van der Kooij ◽  
David Righton ◽  
Espen Strand ◽  
Kathrine Michalsen ◽  
Vilhjalmur Thorsteinsson ◽  
...  
Keyword(s):  
Data Storage ◽  
Gadus Morhua ◽  
Fish Length ◽  
Pressure Reduction ◽  
Electronic Data ◽  
Data Storage Tags ◽  
Rapid Ascent ◽  
Using Data ◽  
Electronic Tagging ◽  
Negatively Buoyant

Abstract van der Kooij, J., Righton, D., Strand, E., Michalsen, K., Thorsteinsson, V., Svedäng, H., Neat, F. C., and Neuenfeldt, S. 2007. Life under pressure: insights from electronic data-storage tags into cod swimbladder function. – ICES Journal of Marine Science. 64: 1293–1301. The behavioural response of cod (Gadus morhua) to sudden pressure reductions was investigated in a large electronic-tagging experiment using data collected from 141 cod tagged in five different areas of the Northeast Atlantic. More than 40% of cod exhibited a characteristic equilibration behaviour after a rapid pressure reduction caused either by capture before tagging, or by pressure reduction during a rapid ascent from the seabed, or when migrating to deeper water. The equilibration allowed the cod to regain demersal residence. The rate of descent averaged 10 m d−1 (ranging from 2 to 23 m d−1) over periods of less than a day to 1 month. Descent rates for cod on the Icelandic shelf were inversely related to fish length, i.e. smaller fish descended more rapidly, findings consistent with results achieved in the past under laboratory conditions. Modelling of swimbladder volume during equilibration suggested that cod were negatively buoyant for most of the time. The results imply that swimbladder functionality is retained after the probable barotrauma that would follow a large and rapid ascent, and that rates of gas exchange into the swimbladder may be naturally variable. These findings have implications for assumptions on discard mortality, the interpretation of cod behaviour, and its impact on biomass estimates obtained from acoustic surveys.

Evidence of spawning skippers in Atlantic cod from data storage tags

2014 ◽  
Vol 156 ◽  
pp. 23-25 ◽  
Author(s):  
Ingibjörg G. Jónsdóttir ◽  
Vilhjalmur Thorsteinsson ◽  
Ólafur K. Pálsson ◽  
Gunnar G. Tómasson ◽  
Christoph Pampoulie
Keyword(s):  
Data Storage ◽  
Atlantic Cod ◽  
Data Storage Tags
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