Diel activity patterns of sixgill sharks, Hexanchus griseus: the ups and downs of an apex predator

  title={Diel activity patterns of sixgill sharks, Hexanchus griseus: the ups and downs of an apex predator},
  author={Kelly S. Andrews and Greg D. Williams and Deborah A. Farrer and Nick Tolimieri and Chris J. Harvey and Gregory G. Bargmann and Phillip S. Levin},
  journal={Animal Behaviour},
Fine-Scale Movements of the Broadnose Sevengill Shark and Its Main Prey, the Gummy Shark
Overall, diel differences in water column use, along with the presence of oscillatory behaviour and burst speed events suggest that N. cepedianus are nocturnal foragers, but may opportunistically attack prey they happen to encounter during the day.
Vertical and horizontal movement patterns of scyphozoan jellyfish in a fjord-like estuary
Net and cumulative distances traveled suggest that Hood Canal may be a sink for jellyfish, potentially exacer- bating effects of population blooms on the ecosystem, and provide evidence that jellyfish are capable of more advanced swimming behaviors than often thought.
Environmental cycles and individual variation in the vertical movements of a benthic elasmobranch
Trends in depth and vertical activity reflect the behaviour, habitat use and habitat preferences of marine organisms. However, among elasmobranchs, research has focused heavily on pelagic sharks,
Oceanic Diel Vertical Movement Patterns of Blue Sharks Vary With Water Temperature and Productivity to Change Vulnerability to Fishing
In the pelagic environment diel vertical movements (DVM) are widespread across taxa, from zooplankton ascending from day-time depths into surface layers at night to avoid visual predators, to apex
Diel vertical migration and central place foraging in benthic predators
Diel vertical migration (DVM) is a widespread behaviour among many pelagic species, from zooplankton to sharks and has been widely studied in both marine and freshwater environments. Usually, DVM
Plasticity in the diel vertical movement of two pelagic predators (Prionace glauca and Alopias vulpinus) in the southeastern Indian Ocean
This study has improved the understanding of the vertical movement patterns of these pelagic predators and the relationship between their depth distribution, temperature, and activity.
Diel patterns in swimming behavior of a vertically migrating deepwater shark, the bluntnose sixgill (Hexanchus griseus)
Sixgill sharks exhibited relatively high rates of activity during both shallow (night) and deep (day) phases and did not reduce activity levels during their deeper daytime distribution while experiencing low temperature and dissolved oxygen levels, demonstrating an ability to tolerate the low oxygen conditions occurring within the local oxygen minimum zone.
Intraspecific differences in movement, dive behavior and vertical habitat preferences of a key marine apex predator
Understanding the patterns of large-scale movements of highly mobile marine predators is essential to understanding the impacts of anthropogenic pressures on the animals and the ecosystems they
Diel vertical migration of adult burbot: a dynamic trade-off among feeding opportunity, predation avoidance, and bioenergetic gain
The results, which showed elevated nightly activity and a seasonal size-structured depth distribution during DVMs, suggest these migrations likely provide a feeding opportunity “window” for this nocturnal predator, constrained by predation or cannibalism threat.


Diel and tidal rhythms in diving behaviour of pelagic sharks identified by signal processing of archival tagging data
The utility of signal processing techniques is demonstrated in objectively identifying both expected and unexpected periodicity in these continuous, high-resolution tracks of basking sharks.
Hunt warm, rest cool: bioenergetic strategy underlying diel vertical migration of a benthic shark.
These results provide the first clear evidence that are consistent with the hypothesis that a benthic marine-fish predator utilizes DVM as an energy conservation strategy that increases bioenergetic efficiency.
Movements, behavior and habitat preferences of juvenile white sharks Carcharodon carcharias in the eastern Pacific
It is demonstrated that the nursery region of white sharks includes waters of southern California, USA, and Baja Cali- fornia, Mexico, and juvenile white sharks captured as bycatch in both US and Mexican waters, suggesting that management of fishing mortality should be of increased concern.
Movements and Swimming Behavior of Three Species of Sharks in La Jolla Canyon, California
We tracked six individuals of three shark species, the shortfin mako, Isurus oxyrinchus, great white, Carcharodon carcharias, and blue, Prionace glauca, near the submarine canyon off La Jolla,
Horizontal and vertical movements of the shortfin mako shark, Isurus oxyrinchus, in the southern California bight.
Acoustic telemetry was used to identify short-term horizontal and vertical movements of three shortfin mako sharks in the southern California bight during the summer of 1989, and vertical and horizontal movements did not indicate any diel activity pattern associated with distance to the shore or nearby islands or with bottom topography.
Deep-diving and diel changes in vertical habitat use by Caribbean reef sharks Carcharhinus perezi
The wide vertical and temperature range documented for this top-predator reveals ecologi- cal coupling of deep and shallow reef habitats and has implications for Marine Protected Area (MPA) design.
Diel vertical migration of myctophid fishes (Family Myctophidae) in the transitional waters of the western North Pacific
The diel vertical migration patterns of adult myctophid fishes were determined in the transitional waters of the western North Pacific off Japan, using day–night sampling from 20 to 700 m depths with
Daily patterns in the activities of swordfish, Xiphias gladius, observed by acoustic telemetry
Horizontal and vertical movements of swordfish were studied using acoustic telemetry. Five swordfish in the Pacific and one in the Atlantic were tagged with transmitters which provided information on
Movements of blue sharks (Prionace glauca) in depth and course
Acoustic telemetry was used to follow 22 blue sharks,Prionace glauca (Linnaeus), over the continental shelf and slope in the region between George's Bank and Cape Hatteras between 1979 and 1986, finding that they may orient to the earth's magnetic field, or to the ocean's electric fields, allowing them to swim on a constant heading in the absence of celestial cues.
Movement patterns, depth preferences, and stomach temperatures of free-swimming juvenile mako sharks, Isurus oxyrinchus, in the Southern California Bight
Stomach content analyses of four makos captured at the end of tracking verified the occurrence of feeding events as indicated by changes in stomach temperature, and body size was positively correlated with both maximum and average stomach temperature.