Near real time satellite tracking of striped marlin (Kajikia audax) movements in the Pacific Ocean

Holdsworth, John C.; Sippel, Tim; Block, Barbara A.

doi:10.1007/s00227-008-1104-y

Cited by 29 publications

(32 citation statements)

References 20 publications

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“…Individuals were separated into large (>2.5 m TL) and small (<2.5 m TL) sharks on map plots to establish horizontal movement patterns in relation to size. The magnitude and distribution of errors from Kalman filter location estimates have been assessed previously, with modelled PAT data providing comparable geolocation estimates to SPOT5 data (Holdsworth et al 2009;Sippel et al 2011). As such, kernel density is presented as a percentage of daily average positions for all sharks, with the 95 and 75 % contours highlighting core regions of occupancy.…”

Section: Data Analysesmentioning

confidence: 99%

Tiger shark (Galeocerdo cuvier) movement patterns and habitat use determined by satellite tagging in eastern Australian waters

et al. 2014

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Section: Data Analysesmentioning

confidence: 99%

Tiger shark (Galeocerdo cuvier) movement patterns and habitat use determined by satellite tagging in eastern Australian waters

et al. 2014

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“…The second approach employed a coherent state-space model using raw light levels recorded on the tag (Trackit, Nielsen and Sibert 2007). Each of the models employed have been widely used in the marine biotelemetry field (e.g., Musyl et al 2003;Holdsworth et al 2008). Secondary bathymetric correction was applied to both model outputs using an individual's maximum daily depth and the 'analyzepsat' library in R (Galuardi et al 2010).…”

Section: Satellite Telemetrymentioning

confidence: 99%

Movements of the reef manta ray (Manta alfredi) in the Red Sea using satellite and acoustic telemetry

Braun

Skomal²,

Thorrold

et al. 2015

Mar Biol

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within the array. Estimated and realized satellite tag data indicated regional movements <200 km from the tagging location, largely coastal residency, and high surface occupation. GPS-tagged individuals regularly moved within the coastal reef matrix up to ~70 km to the south but continued to return to the tagging area near the high-occupancy sites identified in the acoustic array. We also tested the accuracy of several geolocation models to determine the best approach to analyze our light-based satellite tag data. We documented significant errors in light-based movement estimates that should be considered when interpreting tracks derived from light-level geolocation, especially for animals with restricted movements through a homogenous temperature field. Despite some error in satellite tag positions, combining results from PSAT and acoustic tags in this study yielded a comprehensive representation of manta spatial ecology across several scales, and such approaches will, in the future, inform the design of appropriate management strategies for manta rays in the Red Sea and tropical regions worldwide.

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“…PSAT tags are capable of providing purely objective measurements of biophysical relationships, but several studies demonstrate that conventional light-based geolocation techniques are inadequate due to large spatial error [141,142]. Higher resolution methods are now becoming available [69,143] and should facilitate rapid improvements in this field.…”

Section: Complex Water Mixingmentioning

confidence: 99%

Satellite telemetry reveals physical processes driving billfish behavior

Braun

Kaplan

Horodysky

et al. 2015

Animal Biotelemetry

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Pop-up satellite archival transmitting (PSAT) tags are capable of storing high-resolution behavioral and environmental information for extended periods of time (approximately 1 year), rendering them especially valuable for studying highly mobile species. In this review, we synthesize published PSAT data to understand the biophysical drivers that influence movements of billfishes (families Xiphiidae and Istiophoridae). To date, over 1,080 PSATs have been deployed on billfishes, with individuals demonstrating both trans-equatorial and trans-basin movements. Using this dataset, we identify four main physical variables that drive billfish behavior: temperature, light, oxygen, and complex water mixing (e.g. fronts and eddies). Of the seven species that have been studied with PSAT technology, all exhibited a strong thermal preference for water >22°C, though vertically migrating swordfish additionally occupied waters <10°C while at depth. Ambient light levels influence vertical movements, especially those associated with foraging, as billfish possess large eyes and thermoregulatory abilities that facilitate feeding behaviors below warm surface layers. Mounting evidence suggests that some billfishes actively avoid regions with low dissolved oxygen (<3.5 mL L −1). Human-induced climate change is expected to increase the horizontal and vertical extent of hypoxic water and may further compress habitat and concentrate fishing pressure on pelagic fishes. Finally, complex submeso-and mesoscale processes provide critical habitat for spawning, larval feeding, and retention, but our understanding of these and other behavioral aspects of billfish biology remains limited. Future research efforts should leverage technical advancements while integrating existing and future tag data with chemical and physical oceanographic datasets to gain a better understanding of the relevant biophysical interactions for billfishes, thereby enhancing management capabilities for this ecologically and economically important group of fishes.

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Near real time satellite tracking of striped marlin (Kajikia audax) movements in the Pacific Ocean

Cited by 29 publications

References 20 publications

Tiger shark (Galeocerdo cuvier) movement patterns and habitat use determined by satellite tagging in eastern Australian waters

Tiger shark (Galeocerdo cuvier) movement patterns and habitat use determined by satellite tagging in eastern Australian waters

Movements of the reef manta ray (Manta alfredi) in the Red Sea using satellite and acoustic telemetry

Satellite telemetry reveals physical processes driving billfish behavior

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