The migratory behaviour of North Sea plaice: Currents, clocks and clues

Metcalfe, Julian D.; Hunter, Ewan; Buckley, Ainsley A.

doi:10.1080/10236240600563404

Cited by 33 publications

(24 citation statements)

References 33 publications

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“…The resolution of such data, however, tends to be relatively coarse, with patterns inextricably linked to the distribution of the fishing fleets (Bolle et al , 2005; Righton et al , 2010). The use of pop‐up satellite archival tags (PSAT) and electronic data storage tags (DST) has increased dramatically over the past decade, with improved miniaturization and recording capacity allowing sometimes multi‐year recordings of the ambient experience of individual fishes (Metcalfe & Arnold, 1997; Hunter et al , 2003; Metcalfe et al , 2006; Block et al , 2011). These new technologies have provided exciting new insights into the migratory behaviours and mechanisms that underpin population structuring.…”

Section: Introductionmentioning

confidence: 99%

Can otolith elemental chemistry retrospectively track migrations in fully marine fishes?

Sturrock¹,

Trueman²,

Darnaude³

et al. 2012

Journal of Fish Biology

226

187

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Otolith microchemistry can provide valuable information about stock structure and mixing patterns when the magnitude of environmental differences among areas is greater than the cumulative influence of any vital effects. Here, the current understanding of the underlying mechanisms governing element incorporation into the otolith is reviewed. Hard and soft acid and base (HSAB) theory is employed to explore the differences in chemical behaviours, distributions and affinities between elements. Hard acid cations (e.g. Mg(2+) , Li(+) and Ba(2+) ) tend to be less physiologically influenced and accepted more readily into the otolith crystal lattice but are relatively homogeneous in seawater. Soft acid cations (e.g. Zn(2+) and Cu(2+) ) on the other hand, exhibit more varied distributions in seawater, but are more likely to be bound to blood proteins and less available for uptake into the otolith. The factors influencing the geographical distribution of elements in the sea, and their incorporation into the otoliths of marine fishes are reviewed. Particular emphasis is placed on examining physiological processes, including gonad development, on the uptake of elements commonly used in population studies, notably Sr. Finally, case studies are presented that either directly or indirectly compare population structuring or movements inferred by otolith elemental fingerprints with the patterns indicated by additional, alternative proxies. The main obstacle currently limiting the application of otolith elemental microchemistry to infer movements of marine fishes appears to lie in the largely homogeneous distribution of those elements most reliably measured in the otolith. Evolving technologies will improve the discriminatory power of otolith chemistry by allowing measurement of spatially explicit, low level elements; however, for the time being, the combination of otolith minor and trace element fingerprints with alternative proxies and stable isotopic ratios can greatly extend the scope of migration studies. Among the otolith elements that routinely occur above instrument detection limits, Ba, Mn and Li were deemed the most likely to prove reliable geographic markers in marine species.

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Section: Introductionmentioning

confidence: 99%

Can otolith elemental chemistry retrospectively track migrations in fully marine fishes?

Sturrock¹,

Trueman²,

Darnaude³

et al. 2012

Journal of Fish Biology

226

187

View full text Add to dashboard Cite

show abstract

“…2009), and the long‐distance trajectory of marine animals often reflects residual current drift (Gaspar et al. 2006; Metcalfe, Hunter & Buckley 2006).…”

Section: Introductionmentioning

confidence: 99%

Estuarine crocodiles ride surface currents to facilitate long‐distance travel

Campbell

Watts

Sullivan

et al. 2010

Journal of Animal Ecology

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Summary1. The estuarine crocodile (Crocodylus porosus) is the world's largest living reptile. It predominately inhabits freshwater and estuarine habitats, but widespread geographic distribution throughout oceanic islands of the South-east Pacific suggests that individuals undertake sizeable ocean voyages. 2. Here we show that adult C. porosus adopt behavioural strategies to utilise surface water currents during long-distance travel, enabling them to move quickly and efficiently over considerable distances. 3. We used acoustic telemetry to monitor crocodile movement throughout 63 km of river, and found that when individuals engaged in a long-distance, constant direction journey (>10 km day )1 ), they would only travel when current flow direction was favourable. Depth and temperature measurements from implanted transmitters showed that they remained at the water surface during travel but would dive to the river substratum or climb out on the river bank if current flow direction became unfavourable. 4. Satellite positional fixes from tagged crocodiles engaged in ocean travel were overlaid with residual surface current (RSC) estimates. The data showed a strong correlation existed between the bearing of the RSC and that of the travelling crocodile (r 2 = 0AE92, P < 0AE0001). 5.The study demonstrates that C. porosus dramatically increase their travel potential by riding surface currents, providing an effective dispersal strategy for this species.

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“…However, both studies suggested similar possible use of oceanic currents to gain speed and increase travel efficiency. Water currents are often a dominant feature of the open sea, and there is compelling evidence to indicate that the ocean currents play a major role in the life histories of a number of fish species (Metcalfe et al 2002(Metcalfe et al , 2006. Future research can attempt to determine whether Japanese eels use the Kuroshio Current for the early part of their spawning migration.…”

Section: Migration Route and Speedmentioning

confidence: 99%