Downstream migration patterns of one-year-old hatchery-reared European sturgeon (Acipenser sturio)

Acolas, Marie‐Laure; Rochard, E.; Pichon, Céline Le; Rouleau, Étienne

doi:10.1016/j.jembe.2012.06.026

Cited by 21 publications

(14 citation statements)

References 47 publications

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“…The European sturgeon, Acipenser sturio (Linnaeus, 1758) is a critically endangered migratory species (Lepage and Rochard 1995;Lassalle et al 2010;Chassaing et al 2016) which is currently the subject of a European recovery plan (Rosenthal et al 2007), along with national action plans in France (MEDDTL 2011) and in Germany . The species has a complex life cycle involving migration periods associated with habitat shifts (Castelnaud et al 1991;Rochard et al 2001;Acolas et al 2011aAcolas et al , 2012. The reproduction occurs in rivers between May and June, following which juveniles migrate to estuaries in the first year of their life.…”

Section: Introductionmentioning

confidence: 99%

European sturgeon (Acipenser sturio L.) young of the year performance in different rearing environments –study within a stocking program

2016

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The European sturgeon is critically endangered and the French ex-situ conservation approach involves developing a captive stock to produce offspring for release to boost natural populations. The purpose of our study was to assess the effects of rearing environment before stocking on the survival, growth, and behavior of threemonth-old sturgeons from two different crossings. Enriched rearing was designed to mimic the variability of the natural environment using river water, natural photoperiod, substrate, variable water current and depths. Traditional rearing was carried out with bare tanks, underground water, dark conditions, without current and at constant depth. Fish survival was determined monthly and growth was estimated weekly. Behavior was assessed with exploration and novel prey tests in solitary using video tracking. Results demonstrated that enriched condition resulted in bigger fish from the first month. Growth curve analysis revealed that enriched environment made both fish crossings grow in a similar manner. In contrast, crossings growth differed in traditional rearing which may reflect a genotype-environment interaction. Behavioral data highlighted that enriched-reared fish were slower to explore a new environment but more individuals engaged on doing so than traditional-reared fish. Results also showed that survival was high (>80 %) during all the trial. However, survival was lower during the second month in enriched environment. Our findings advocate for the integration of enriched rearing practices within the juvenile production for release in order to boost the performance linked to fitness. Stocking practices and life history research must work together to favor adaptive aquaculture approaches, which support species conservation.

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Section: Introductionmentioning

confidence: 99%

European sturgeon (Acipenser sturio L.) young of the year performance in different rearing environments –study within a stocking program

2016

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“…This study tested a new acoustic transmitter that is considerably smaller than other acoustic transmitters previously used for sturgeon research (Acolas et al., ; Boone et al., ; Miller et al., ). The white sturgeon used in this study were some of the smallest (232 ± 24 mm FL; 70.2 ± 20.1 g) that have been evaluated for acoustic transmitter effects, yet transmitter burdens remained low (1.1 ± 0.3%) because of this new technology.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of four surgical implantation techniques for age‐0 white sturgeon ( Acipenser transmontanus Richardson, 1836) with a new acoustic transmitter

et al. 2017

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Summary The goal of this study was to evaluate four implantation techniques by assessing transmitter retention, survival, growth, and wound healing responses in white sturgeon (Acipenser transmontanus Richardson, 1836). A new acoustic transmitter (AT; cylindrical, 0.7 g in air, 24.2 × 5.0 mm, up to 365 days battery life) was developed to monitor age‐0 sturgeon; however, an implantation technique is critical to provide guidance for its use in field research. Sturgeon (n = 150, 182–289 mm fork length, 35–116 g) were separated into five treatments (n = 30 per treatment): (i) control, (ii) flank incision with one suture, (iii) flank incision without a suture, (iv) offline incision with one suture, and (v) offline incision without a suture. Fish were implanted with a non‐functioning AT and observed for 28 days. Transmitter retention was 100% and only fish in the offline incision without a suture treatment had reduced growth (0.15% mm growth per day) compared to controls (0.38%) over the 28 days study. Suturing caused an increase in incision inflammation, ulceration, and water mold infection. Offline incisions were more susceptible to varicosities than flank incisions. Non‐sutured incisions showed greater incision openness, but only during the first 14 days post‐implantation. A flank incision without a suture is recommended for implanting this new AT in age‐0 white sturgeon.

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“…Tagging will eventually reveal whether reintroduced animals survive to adulthood and return to their rivers of release to reproduce. This study as well as [54] and [55] not only provide knowledge for species restoration but also insight on the migratory and habitat use patterns of juvenile sturgeon, the least studied life history stage in terms of movement and migration. Rearing of European Sturgeon in captivity also provides information on life history parameters associated with light, temperature, and salinity that are useful for the purpose of inferring population preferences and requirements in the wild [56], [57].…”

Section: Introductionmentioning

confidence: 94%

Research Tools to Investigate Movements, Migrations, and Life History of Sturgeons (Acipenseridae), with an Emphasis on Marine-Oriented Populations

Nelson¹,

Doukakis

Lindley

et al. 2013

PLoS ONE

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Worldwide, sturgeons (Acipenseridae) are among the most endangered fishes due to habitat degradation, overfishing, and inherent life history characteristics (long life span, late maturation, and infrequent spawning). As most sturgeons are anadromous, a considerable portion of their life history occurs in estuarine and marine environments where they may encounter unique threats (e.g., interception in non-target fisheries). Of the 16 marine-oriented species, 12 are designated as Critically Endangered by the IUCN, and these include species commercially harvested. We review important research tools and techniques (tagging, electronic tagging, genetics, microchemistry, observatory) and discuss the comparative utility of these techniques to investigate movements, migrations, and life-history characteristics of sturgeons. Examples are provided regarding what the applications have revealed regarding movement and migration and how this information can be used for conservation and management. Through studies that include Gulf (Acipenser oxyrinchus desotoi) and Green Sturgeon (A. medirostris), we illustrate what is known about well-studied species and then explore lesser-studied species. A more complete picture of migration is available for North American sturgeon species, while European and Asian species, which are among the most endangered sturgeons, are less understood. We put forth recommendations that encourage the support of stewardship initiatives to build awareness and provide key information for population assessment and monitoring.

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Downstream migration patterns of one-year-old hatchery-reared European sturgeon (Acipenser sturio)

Cited by 21 publications

References 47 publications

European sturgeon (Acipenser sturio L.) young of the year performance in different rearing environments –study within a stocking program

European sturgeon (Acipenser sturio L.) young of the year performance in different rearing environments –study within a stocking program

Evaluation of four surgical implantation techniques for age‐0 white sturgeon ( Acipenser transmontanus Richardson, 1836) with a new acoustic transmitter

Research Tools to Investigate Movements, Migrations, and Life History of Sturgeons (Acipenseridae), with an Emphasis on Marine-Oriented Populations

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