Evidence for ‘escape through spawning’ in large gilthead sea bream Sparus aurata reared in commercial sea-cages

Somarakis, Stylianos; Pavlidis, M.; Saapoglou, Christina; Tsigenopoulos, Costas S.; Dempster, Tim

doi:10.3354/aei00057

Cited by 42 publications

(42 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increasing aquaculture of fish species, such as cod or sea bream, until the reproductive age results in escapes of large numbers of eggs into the environment (Uglem et al 2012, Somarakis et al 2013. The ABFT, like the Pacific bluefin tuna, is an example of those species where so-called 'escape through spawning' (Uglem et al 2012) may be significant in commercial facilities, since > 60% of the ABFT eastern stock total allowable catch ends up in Mediterranean tuna farms (Ortiz 2015).…”

Section: Discussionmentioning

confidence: 99%

Assessment of spawning of Atlantic bluefin tuna farmed in the western Mediterranean Sea

Medina¹,

Aranda²,

Gherardi³

et al. 2016

Aquacult. Environ. Interact.

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Assessment of spawning of Atlantic bluefin tuna farmed in the western Mediterranean Sea

Medina¹,

Aranda²,

Gherardi³

et al. 2016

Aquacult. Environ. Interact.

View full text Add to dashboard Cite

“…Interbreeding with wild stocks is much more likely in fish of such an age and size, and this was confirmed by the presence of mature eggs in both of the larger fish captured. Even the younger escapees may be capable of interbreeding, as spawning of farmed fish in seacages has been noted in other species, including cod (Jørstad et al 2008) and seabream (Somarakis et al 2013). Female seabass are considered unlikely to mature in the normal timescale of seacage residency as they mature at 3 years of age (Carrillo et al 1995).…”

Section: Discussionmentioning

confidence: 99%

“…Seabass are likely to escape in numbers similar to seabream and are able to disperse further and more rapidly (Arechavala-Lopez et al 2013), potentially increasing their ability to survive in the wild. In addition, 'escape by spawning' has been highlighted as a potentially important source of farm-origin fish from Mediterranean aquaculture as a consequence of fish increasingly being held in seacages beyond sexual maturation (Dimitriou et al 2007, Somarakis et al 2013.…”

Section: Introductionmentioning

confidence: 99%

Prevalence and survival of escaped European seabass Dicentrarchus labrax in Cyprus identified using genetic markers

Brown¹,

Miltiadou²,

Tsigenopoulos³

2015

Aquacult. Environ. Interact.

Self Cite

View full text Add to dashboard Cite

The escape of European seabass Dicentrarchus labrax (L.) from fish farms is considered to be a widespread problem in the Mediterranean area, where this species is produced in large quantities in offshore cages. Whilst estimates of the number of escaped seabass in the wild have been made previously, the actual distribution, long-term survival and the potential effects on native populations remain largely unknown. This study characterises the genetic profiles of all contemporary and some historic aquaculture sources of European seabass in Cyprus and uses these profiles to identify escaped fish in seabass collected from the wild around the island. Significant differences in the microsatellite and mitochondrial DNA marker profiles were found between farmed and wild fish. The number of escapees identified was 15% of the total number of wild-caught fish sampled. However, escapees were not equally distributed; at one location ~70% of wild-caught fish were escapees while in other areas escapees only accounted for up to 4%. Escapees were present in all size classes of fish, but the majority were of commercial size (300−500 g) typical of seabass farmed in seacages. This indicates that they may have escaped recently and during normal aquaculture operations as no escape event was reported in the course of the study. Two large, egg-bearing females and some juvenile fish were also classified as escapees, which suggests that long-term survival and interbreeding with wild fish is possible in Cypriot waters.

show abstract

“…Based on the fact that gilthead seabream is one of the most important farmed fish species in the world, a major part of the continuous effort reported focused on improvement of its rearing conditions quality (Albrizio et al 2014;Basurco et al 2011;Cardinal et al 2011;De Boulton et al 2011;De Donno et al 2004;Loukovitis et al 2013;Papoutsoglou et al 1999;Somarakis et al 2013;Yilmaz and Arabaci 2010). As it should be expected, this attainment has been characterized by the investigation of the interactions of many rearing environmental parameters, bearing in mind that gilthead seabream is a euryhaline and eurythermal species.…”

Section: Introductionmentioning

confidence: 97%

Gilthead seabream (Sparus aurata) response to three music stimuli (Mozart—“Eine Kleine Nachtmusik,” Anonymous—“Romanza,” Bach—“Violin Concerto No. 1”) and white noise under recirculating water conditions

Papoutsoglou

Karakatsouli

Psarrou

et al. 2014

Fish Physiol Biochem

View full text Add to dashboard Cite

This study presents the results of the response of Sparus aurata to three different musical stimuli, derived from the transmission (4 h per day, 5 days per week) of particular music pieces by Mozart, Romanza and Bach (140 dB(rms) re 1 μPa), compared to the same transmission level of white noise, while the underwater ambient noise in all the experimental tanks was 121 dB(rms) re 1 μPa. Using recirculating sea water facilities, 10 groups, 2 for each treatment, of 20 specimens of 11.2 ± 0.02 g (S.E.), were reared for 94 days, under 150 ± 10 l× 12L-12D, and were fed an artificial diet three times per day. Fish body weight showed significant differences after 55 days, while its maximum level was observed after the 69th day until the end of the experiment, the highest value demonstrated in Mozart (M) groups, followed by those of Romanza (R), Bach (B), control (C) and white noise (WN). SGR (M = B), %WG (M = B) and FCR (all groups fed same % b.w.) were also improved for M group. Brain neurotransmitters results exhibited significant differences in DA-dopamine, (M > B), 5HIAA (C > B), 5HIAA:5HT (WN > R), DOPAC (M > B), DOPAC:DA and (DOPAC + HVA):DA, (C > M), while no significant differences were observed in 5HT, NA, HVA and HVA:DA. No differences were observed in biometric measurements, protease activity, % fatty acids of fillet, visceral fat and liver, while differences were observed regarding carbohydrase activity and the amount (mg/g w.w.) of some fatty acids in liver, fillet and visceral fat. In conclusion, present results confirm those reported for S. aurata, concerning the observed relaxing influence--due to its brain neurotransmitters action--of the transmission of Mozart music (compared to R and B), which resulted in the achievement of maximum growth rate, body weight and improved FCR. This conclusion definitely supports the musical "understanding" and sensitivity of S. aurata to music stimuli as well as suggesting a specific effect of white noise.

show abstract

Evidence for ‘escape through spawning’ in large gilthead sea bream Sparus aurata reared in commercial sea-cages

Cited by 42 publications

References 31 publications

Assessment of spawning of Atlantic bluefin tuna farmed in the western Mediterranean Sea

Assessment of spawning of Atlantic bluefin tuna farmed in the western Mediterranean Sea

Prevalence and survival of escaped European seabass Dicentrarchus labrax in Cyprus identified using genetic markers

Gilthead seabream (Sparus aurata) response to three music stimuli (Mozart—“Eine Kleine Nachtmusik,” Anonymous—“Romanza,” Bach—“Violin Concerto No. 1”) and white noise under recirculating water conditions

Contact Info

Product

Resources

About