Let them go free: Spatial behaviour following the experimental release of hatchery-reared juveniles Sciaena umbra and Dentex dentex

Ducos, Salomé; Garcı́a, Jesús; Mourier, Johann; Aïello, Antoine; Durieux, Eric

doi:10.1016/j.marenvres.2022.105712

Cited by 3 publications

(1 citation statement)

References 52 publications

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“…Detections of fish at stations within the broad array indicates stocked fish dispersed from the release site and spread throughout a system, and similar patterns have been observed in both marine and freshwater environments (Ducos et al, 2022;Hoffman & Bettoli, 2005). This provides some additional evidence that the decline in detections within the VPS was at least partly due to fish dispersal, rather than post-release mortality.…”

Section: Broad-scale Dispersalsupporting

confidence: 63%

Implications of habitat use and movement of stocked juvenile dusky flathead (Platycephalus fuscus) on stock enhancement release strategies

Becker

Pederson²,

Lowry

et al. 2023

Fisheries Management Eco

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Stocking of marine fish into coastal systems to augment natural recruitment is a growing practice adopted by fisheries managers around the world. Releasing fish directly into well‐resourced nursery grounds greatly increases survival and retention of stocked individuals but requires an understanding of juvenile habitat requirements. In eastern Australia, the dusky flathead (Platycephalus fuscus) is a highly regarded recreationally targeted species and the focus of an emerging stock enhancement programme, although little is known of their specific nursery habitat. Using acoustic telemetry, hatchery‐reared juveniles were monitored in Lake Macquarie to quantify habitat use and dispersal. Sandy areas adjacent to edges of seagrass beds were favoured, likely as foraging habitat. Within 5 weeks after release, fish were detected 5 km from the release site, but only at locations containing seagrass beds, so stocked fish likely disperse around estuaries to regions with suitable habitat. Future releases of dusky flathead should target areas containing patchy seagrass‐sand to optimise stocking outcomes. Beyond fisheries enhancement programmes, our findings highlight the importance of structured habitat, such as seagrass beds, for juvenile fish.

show abstract

Section: Broad-scale Dispersalsupporting

confidence: 63%

Implications of habitat use and movement of stocked juvenile dusky flathead (Platycephalus fuscus) on stock enhancement release strategies

Becker

Pederson²,

Lowry

et al. 2023

Fisheries Management Eco

View full text Add to dashboard Cite

show abstract

Effect of light intensity on the survival of European spiny lobster (Palinurus elephas) larvae reared in aquaculture system

Filippi,

Millot,

Bracconi

et al. 2024

Aquaculture Reports

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Residency and movement patterns of juvenile yellowfin bream Acanthopagrus australis, stocked on estuarine artificial reefs

Becker,

Dworjanyn,

Mos

et al. 2024

Mar. Freshw. Res.

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Context Successful fish stocking relies upon releasing cohorts directly into habitat containing suitable supporting resources. To facilitate this, an emerging trend has seen fish released onto artificial reefs. Aims We compared the residency and movement patterns of juvenile sparids (yellowfin bream – Acanthopagrus australis), stocked on artificial reefs and natural habitat, to determine the suitability of incorporating artificial structures as release sites in future stocking programs. Methods Forty hatchery-reared yellowfin bream were evenly divided and stocked on either artificial reef or natural habitat within an east-Australian estuary, and tracked using acoustic telemetry. Key results Artificial reefs provided greater habitat complexity than the natural habitat and fish stocked onto these structures showed greater fidelity to their release site and were detected for longer periods of time than those stocked into less complex natural habitat. Conclusions The high residency levels of fish around artificial reef sites indicate they contain resources to support stocked juvenile sparids. Implications Stocked yellowfin bream can tolerate a range of salinity and temperatures, allowing flexibility in stocking programs. Future stocking of bream or other sparids should consider releasing fish onto artificial reefs where available. Additionally, the deployment of reefs could aid existing stocking programs.

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Let them go free: Spatial behaviour following the experimental release of hatchery-reared juveniles Sciaena umbra and Dentex dentex

Cited by 3 publications

References 52 publications

Implications of habitat use and movement of stocked juvenile dusky flathead (Platycephalus fuscus) on stock enhancement release strategies

Implications of habitat use and movement of stocked juvenile dusky flathead (Platycephalus fuscus) on stock enhancement release strategies

Effect of light intensity on the survival of European spiny lobster (Palinurus elephas) larvae reared in aquaculture system

Residency and movement patterns of juvenile yellowfin bream Acanthopagrus australis, stocked on estuarine artificial reefs

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