Aquatic animal telemetry: A panoramic window into the underwater world
A brave new world with a wider view Researchers have long attempted to follow animals as they move through their environment, but such efforts were limited to short distances and times in species large enough to carry large batteries and transmitters, while new technologies have opened up new frontiers in animal tracking remote data collection.
HORIZONTAL AND VERTICAL MOVEMENTS OF YELLOWFIN AND BIGEYE TUNA ASSOCIATED WITH FISH AGGREGATING DEVICES
vertical movements of yellowfin tuna Thunnue albaecrns and bigeye tuna T. o k w captured near fish-aggrc gating devices (FADs) were determined using pressuresensitive ultrasonic transmitters. The…
Is it good or bad to fish with FADs? What are the real impacts of the use of drifting FADs on pelagic marine ecosystems?
It is shown that catching juvenile tuna around FADs does not necessarily result in overfishing of stocks, although more selective fishing techniques would likely help obtain higher yield and encourage RFMOs to expand and improve their FAD management plans.
Movements of tiger sharks (Galeocerdo cuvier) in coastal Hawaiian waters
The data suggest that Hawaiian tiger sharks move within large home ranges and that they can efficiently navigate between distant parts of their range, even when this requires crossing open ocean waters.
Physiological and behavioural thermoregulation in bigeye tuna (Thunnus obesus)
- K. Holland, R. Brill, Randolph K. C. Chang, J. Sibert, D. Fournier
- Environmental ScienceNature
- 30 July 1992
This work shows using telemetered data that free-ranging bigeye tuna (Thunnus obesus) can rapidly alter whole-body thermal conductivity by two orders of magnitude, and combines physiological and behavioural thermoregulation to expand the foraging space of big eye tuna into otherwise prohibitively cold, deep water.
Accelerating estimates of activity-specific metabolic rate in fishes: Testing the applicability of acceleration data-loggers
Horizontal and Vertical Movements of Pacific Blue Marlin Captured and Released Using Sportfishing Gear*
Despite the commercia and recreational importance of Pacific blue marlin Makaira n i M a m , little is known about their biology or behavior. This is due mainly to their large size and pelagic…
Electroreception in juvenile scalloped hammerhead and sandbar sharks.
Although the sphyrnid head morphology does not appear to confer a greater sensitivity to prey-simulating dipole electric fields, it does provide a greater lateral search area, which may increase the probability of prey encounter, and enhanced maneuverability, which might aid in prey capture.
Telemetry and random-walk models reveal complex patterns of partial migration in a large marine predator.
- Y. Papastamatiou, C. Meyer, F. Carvalho, Jonathon J Dale, M. Hutchinson, K. Holland
- Environmental ScienceEcology
- 1 November 2013
Animals are often faced with complex movement decisions, particularly those that involve long-distance dispersal. Partial migrations, ubiquitous among all groups of vertebrates, are a form of…
Nursery habitat use and foraging ecology of the brown stingray Dasyatis lata determined from stomach contents, bulk and amino acid stable isotopes
The results clearly demonstrated that stingrays foraged within the bay for the majority of their juve- nile lives then shifted to offshore habitats with the onset of sexual maturity, and show that the study of foraging ecology and habitat use of marine animals can greatly benefit from integrating traditional stomach content and bulk stable isotopic analyses with nitrogen isotopic analysis of individual amino acids.